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Geforce 9800 GT molex adator for PSU

Last response: in Graphics & Displays
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December 17, 2008 5:21:14 PM

Currently my PSU only has 1 free 4 pin connector empty to connect to one of the 4 pins adapters that connect to the 9800 GT. As of now one of the 4 pin connectors on the 9800 isn't connected because there aren't any additional pins connectors avail. I was wondering what I could buy to add additional 4 pins connector slots so I can plug in both 4 pins connectors for the geforce 9800 GT. I heard a molex adapter is what I need, but I don't see how it would add additional pin slots
December 17, 2008 5:33:28 PM

Does you PSU have a pcie connector avialable? You can buy adaptors to convert from them to molex.

By the way, the card is working fine without the additional power connector hooked up? I would guess you're not overclocking it in anyway - have you gamed with it without problem?
December 17, 2008 5:36:22 PM

Does you PSU have a pcie connector avialable? You can buy adaptors to convert from them to molex.

By the way, the card is working fine without the additional power connector hooked up? I would guess you're not overclocking it in anyway - have you gamed with it without problem?
Related resources
December 17, 2008 6:09:45 PM

Its not giving the FPS expected, not much off a big increase from the 8600 GT thats why I'm looking into it. It came super clocked. and where can I find out if theres a PCIE connector?
December 17, 2008 7:32:19 PM

Is that card an AGP card or pci-e (main slot that you plug it into)?

Extra PCI-e connectors are 6 pin - they would be coming out of the PS on a line like the molex do.
Check your Power supply manual to see if you have them.
What is your Power supply (make and model)?
a c 176 U Graphics card
December 17, 2008 7:43:06 PM

Whoa, time out here. Lets review what we know. He had an 8600GT, moved to a 9800GT, and didn't notice much difference. I'm not sure if this is because his system is that bad/old, but the lack of plugging in the 6pin PCIe connector is a part of it. I also wonder how old the PSU is if it doesn't have a PCIe connector at all. More system specs are needed.

OP: What are the specs of your computer and PSU? Do you get a low power error message from the video card at all? If my guesses are right, you need a new PSU, not a molex adapter. If/when you report back, please tell us how many Amps are on the 12V rail. You'll need to take the side of your computer off for this.
December 17, 2008 8:04:11 PM

The card is PCI-E and I have the PCIe slot, the board is sli ready so it has two of those. I just dont know what the 6pin connector looks like, it may be in there or not. Im not sure. I'll post a DXdiag for now, and ill check the volt in a sec. But the PSU is a 500watt so it should be fine

------------------
System Information
------------------
Time of this report: 12/17/2008, 17:03:03
Machine name:
Operating System: Windows XP Home Edition (5.1, Build 2600) Service Pack 3 (2600.xpsp_sp3_gdr.080814-1236)
Language: English (Regional Setting: English)
System Manufacturer: MSI
System Model: MS-7350
BIOS: Default System BIOS
Processor: Intel(R) Pentium(R) D CPU 3.00GHz (2 CPUs)
Memory: 2048MB RAM
Page File: 827MB used, 3112MB available
Windows Dir: C:\WINDOWS
DirectX Version: DirectX 10.0 (4.10.0000.5512)
DX Setup Parameters: Not found
DxDiag Version: 5.03.2600.5512 32bit Unicode

------------
DxDiag Notes
------------
DirectX Files Tab: The file d3d9d.dll is a debug version, which will run slower than the retail version.
Display Tab 1: No problems found.
Sound Tab 1: No problems found.
Music Tab: No problems found.
Input Tab: No problems found.
Network Tab: No problems found.

--------------------
DirectX Debug Levels
--------------------
Direct3D: 0/4 (n/a)
DirectDraw: 0/4 (retail)
DirectInput: 0/5 (retail)
DirectMusic: 0/5 (n/a)
DirectPlay: 0/9 (retail)
DirectSound: 0/5 (retail)
DirectShow: 0/6 (retail)

---------------
Display Devices
---------------
Card name: NVIDIA GeForce 9800 GT
Manufacturer: NVIDIA
Chip type: GeForce 9800 GT
DAC type: Integrated RAMDAC
Device Key: Enum\PCI\VEN_10DE&DEV_0614&SUBSYS_C9763842&REV_A2
Display Memory: 512.0 MB
Current Mode: 1440 x 900 (32 bit) (60Hz)
Monitor: Plug and Play Monitor
Monitor Max Res: 1600,1200
Driver Name: nv4_disp.dll
Driver Version: 6.14.0011.8084 (English)
DDI Version: 9 (or higher)
Driver Attributes: Final Retail
Driver Date/Size: 12/2/2008 23:11:00, 6166272 bytes
WHQL Logo'd: n/a
WHQL Date Stamp: n/a
VDD: n/a
Mini VDD: nv4_mini.sys
Mini VDD Date: 12/2/2008 23:11:00, 6209536 bytes
Device Identifier: {D7B71E3E-4554-11CF-6644-7DE903C2CB35}
Vendor ID: 0x10DE
Device ID: 0x0614
SubSys ID: 0xC9763842
Revision ID: 0x00A2
Revision ID: 0x00A2
Video Accel: ModeMPEG2_C ModeMPEG2_D ModeWMV9_B ModeWMV9_A
Deinterlace Caps: {6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YUY2,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
{6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(UYVY,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(UYVY,YUY2) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
{6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(YV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(YV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
{6CB69578-7617-4637-91E5-1C02DB810285}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_PixelAdaptive
{335AA36E-7884-43A4-9C91-7F87FAF3E37E}: Format(In/Out)=(NV12,0x3231564e) Frames(Prev/Fwd/Back)=(0,0,0) Caps=VideoProcess_YUV2RGB VideoProcess_StretchX VideoProcess_StretchY DeinterlaceTech_BOBVerticalStretch
Registry: OK
DDraw Status: Enabled
D3D Status: Enabled
AGP Status: Enabled
DDraw Test Result: Not run
D3D7 Test Result: Not run
D3D8 Test Result: Not run
D3D9 Test Result: Not run

-------------
Sound Devices
-------------
Description: Realtek HD Audio output
Default Sound Playback: Yes
Default Voice Playback: Yes
Hardware ID: HDAUDIO\FUNC_01&VEN_10EC&DEV_0888&SUBSYS_14627350&REV_1000
Manufacturer ID: 1
Product ID: 100
Type: WDM
Driver Name: RtkHDAud.sys
Driver Version: 5.10.0000.5449 (English)
Driver Attributes: Final Retail
WHQL Logo'd: n/a
Date and Size: 7/18/2007 06:26:04, 4547584 bytes
Other Files:
Driver Provider: Realtek Semiconductor Corp.
HW Accel Level: Full
Cap Flags: 0x0
Min/Max Sample Rate: 0, 0
Static/Strm HW Mix Bufs: 0, 0
Static/Strm HW 3D Bufs: 0, 0
HW Memory: 0
Voice Management: No
EAX(tm) 2.0 Listen/Src: Yes, Yes
I3DL2(tm) Listen/Src: Yes, Yes
Sensaura(tm) ZoomFX(tm): No
Registry: OK
Sound Test Result: Not run

---------------------
Sound Capture Devices
---------------------
Description: Realtek HD Audio Input
Default Sound Capture: Yes
Default Voice Capture: Yes
Driver Name: RtkHDAud.sys
Driver Version: 5.10.0000.5449 (English)
Driver Attributes: Final Retail
Date and Size: 7/18/2007 06:26:04, 4547584 bytes
Cap Flags: 0x0
Format Flags: 0x0

-----------
DirectMusic
-----------
DLS Path: C:\WINDOWS\SYSTEM32\drivers\GM.DLS
DLS Version: 1.00.0016.0002
Acceleration: n/a
Ports: Microsoft Synthesizer, Software (Not Kernel Mode), Output, DLS, Internal, Default Port
Microsoft MIDI Mapper [Emulated], Hardware (Not Kernel Mode), Output, No DLS, Internal
Microsoft GS Wavetable SW Synth [Emulated], Hardware (Not Kernel Mode), Output, No DLS, Internal
Registry: OK
Test Result: Not run

-------------------
DirectInput Devices
-------------------
Device Name: Mouse
Attached: 1
Controller ID: n/a
Vendor/Product ID: n/a
FF Driver: n/a

Device Name: Keyboard
Attached: 1
Controller ID: n/a
Vendor/Product ID: n/a
FF Driver: n/a

Poll w/ Interrupt: No
Registry: OK

-----------
USB Devices
-----------
+ USB Root Hub
| Vendor/Product ID: 0x10DE, 0x026D
| Matching Device ID: usb\root_hub
| Upper Filters: libusb0
| Service: usbhub
| Driver: usbhub.sys, 4/13/2008 23:15:38, 59520 bytes
| Driver: usbd.sys, 8/12/2004 09:08:03, 4736 bytes
|
+-+ USB Human Interface Device
| | Vendor/Product ID: 0x413C, 0x3012
| | Location: Dell USB Optical Mouse
| | Matching Device ID: usb\class_03&subclass_01
| | Upper Filters: libusb0
| | Service: HidUsb
| | Driver: hidusb.sys, 4/13/2008 23:15:28, 10368 bytes
| | Driver: hidclass.sys, 4/13/2008 23:15:28, 36864 bytes
| | Driver: hidparse.sys, 4/13/2008 23:15:24, 24960 bytes
| | Driver: hid.dll, 4/14/2008 04:41:56, 20992 bytes
| |
| +-+ HID-compliant mouse
| | | Vendor/Product ID: 0x413C, 0x3012
| | | Matching Device ID: hid_device_system_mouse
| | | Service: mouhid
| | | Driver: mouclass.sys, 4/13/2008 23:09:48, 23040 bytes
| | | Driver: mouhid.sys, 8/12/2004 08:57:07, 12160 bytes

----------------
Gameport Devices
----------------

------------
PS/2 Devices
------------
+ Standard 101/102-Key or Microsoft Natural PS/2 Keyboard
| Matching Device ID: *pnp0303
| Service: i8042prt
| Driver: i8042prt.sys, 4/13/2008 23:48:02, 52480 bytes
| Driver: kbdclass.sys, 4/13/2008 23:09:48, 24576 bytes
|
+ Terminal Server Keyboard Driver
| Matching Device ID: root\rdp_kbd
| Upper Filters: kbdclass
| Service: TermDD
| Driver: termdd.sys, 4/14/2008 04:43:22, 40840 bytes
| Driver: kbdclass.sys, 4/13/2008 23:09:48, 24576 bytes
|
+ Terminal Server Mouse Driver
| Matching Device ID: root\rdp_mou
| Upper Filters: mouclass
| Service: TermDD
| Driver: termdd.sys, 4/14/2008 04:43:22, 40840 bytes
| Driver: mouclass.sys, 4/13/2008 23:09:48, 23040 bytes

----------------------------
DirectPlay Service Providers
----------------------------
DirectPlay8 Modem Service Provider - Registry: OK, File: dpnet.dll (5.03.2600.5512)
DirectPlay8 Serial Service Provider - Registry: OK, File: dpnet.dll (5.03.2600.5512)
DirectPlay8 IPX Service Provider - Registry: OK, File: dpnet.dll (5.03.2600.5512)
DirectPlay8 TCP/IP Service Provider - Registry: OK, File: dpnet.dll (5.03.2600.5512)
Internet TCP/IP Connection For DirectPlay - Registry: OK, File: dpwsockx.dll (5.03.2600.5512)
IPX Connection For DirectPlay - Registry: OK, File: dpwsockx.dll (5.03.2600.5512)
Modem Connection For DirectPlay - Registry: OK, File: dpmodemx.dll (5.03.2600.5512)
Serial Connection For DirectPlay - Registry: OK, File: dpmodemx.dll (5.03.2600.5512)

DirectPlay Voice Wizard Tests: Full Duplex: Not run, Half Duplex: Not run, Mic: Not run
DirectPlay Test Result: Not run
Registry: OK

-------------------
DirectPlay Adapters
-------------------
DirectPlay8 Serial Service Provider: COM1
DirectPlay8 TCP/IP Service Provider: Wireless Network Connection 10 - IPv4 -

-----------------------
DirectPlay Voice Codecs
-----------------------
Voxware VR12 1.4kbit/s
Voxware SC06 6.4kbit/s
Voxware SC03 3.2kbit/s
MS-PCM 64 kbit/s
MS-ADPCM 32.8 kbit/s
Microsoft GSM 6.10 13 kbit/s
TrueSpeech(TM) 8.6 kbit/s

-------------------------
DirectPlay Lobbyable Apps
-------------------------

------------------------
Disk & DVD/CD-ROM Drives
------------------------
Drive: C:
Free Space: 39.0 GB
Total Space: 305.2 GB
File System: NTFS
Model: WDC WD3200AAKS-00YGA0

Drive: D:
Model: HL-DT-ST DVD-RAM GSA-H54L
Driver: c:\windows\system32\drivers\cdrom.sys, 5.01.2600.5512 (English), 4/13/2008 23:10:48, 62976 bytes

Drive: E:
Model: IW3815S UCH534A SCSI CdRom Device
Driver: c:\windows\system32\drivers\cdrom.sys, 5.01.2600.5512 (English), 4/13/2008 23:10:48, 62976 bytes
December 17, 2008 8:09:34 PM

@47 -
Time out of what? Notice that I asked his PSU make/model for exactly that reason.
And note, his card has molex adaptors on it, not PCIe - I was suggesting using a free PCIe, if one is there, and converting it to molex. But again, PSU make/model will tell the story.

@op - Knowing its a 500W PSU isn't enough. We need to know the amps it puts out on the 12V rail. Ideally the full power breakdown (whats put out on the 5v, 3.3v and 12v(s) and how thats distributed across them). We can dig that up off the web (usually) if you supply a make/model.
December 17, 2008 8:37:07 PM

Hmmm, a couple of things here:

Your card, the 9800GT, can use about 116W or ~10A, all by itself (probably a bit more then that since its an overclocked version).

Now, your PSU has got only a single 20A 12V rail - thats basically powering the entire system. Some of that power is sucked away by the 3.3V and 5V rails - say 3A for those. So you're left with 7A for the rest of the system - not a lot of headroom. I'll have to look to see if I still have the URL for an Amperage calculator that can give a better idea of how close you might be given the other components in your PC.

Finally, as PSU's age their power output drops - and the quality of the PSU is a factor as well.
According to http://www.xtremesystems.org/forums/showthread.php?t=10... you make is not a very good one - so you might have lower output then expected.

Overall, yes, overall I'd say its probably an underpowered system with that 9800GT in it. A new PSU would be a good investment for the future, get you the extra connectors you need and allow you to take better advantage of that GPU.
December 17, 2008 8:56:30 PM

The PSU is only about 7 months old if that, and is there anything I could do to make sure its def the PSU? I don't want to have to buy a new PSU if its not the actual problem.
a c 176 U Graphics card
December 17, 2008 9:02:04 PM

A system with the 9800GT is supposed to have 22A on the 12v rail. Your 500W PSU comes up short. Not to mention the sub standard brand, I can only guess as to who made that and how dirty the power is. I would buy a new PSU, forget the molex idea.

If you don't want to mess with a rebate and want the cheapest PSU you can get, this would be my choice.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Antec Basic 350W. Has 23A on the 12v rail, which is just barely enough. It is however only $30, with shipping it should be around $38.

If your looking for a bit more power, this is a great deal on newegg right now.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Antec Trio 430W. Has 32A on the 12v rail, which should be plenty. Doesn't cost that much more either, its only $48 shipped. (still no rebate.)

Take a look around, just try to stick with better brands. Antec, Corsair, Enermax, PCP&C, and SeaSonic would be my first choices. Second would be OCZ, and FSP.
December 17, 2008 9:19:37 PM

I Was told by EVGA tech support that the problem wasn't really my PSU more so than it is my CPU. Processor: Intel(R) Pentium(R) D CPU 3.00GHz (2 CPUs) . He told me that it's probably bottlenecking the system and causing newer games to run slower than they should be. I'm going to try and overclock it a bit to see if it increase FPS.

If so what would be a good CPU to buy thats not over 200$
a b U Graphics card
December 17, 2008 9:50:45 PM

^ Yes. That's a problem BUT your PSU is still a ticking time bomb.

you DO NOT want this to happen:
Quote:
is equal to approximately 50% of the rated capacity of the Powertek 500w at 45c. This makes Test #2 equal to 264w by loading the 12v to 17a, the 5v rail to 9a, the 3.3v rail to 8a, the +5vsb to 2a, and the -12v to 0.5a. Test #2 showed the Powertek to be a miserable failure. At 120v the 12v rail dropped out of specification by dropping to 11.07v, a greater than 0.5v drop in one test! The +5vsb also dropped down to 4.01v and the efficiency plummeted to ~66%. As bad as 120v testing was 100v was worse. Both times the 100v test was attempted the Powertek 500 blew out on the primary side freezing the Kill-A-Watt rendering it useless and requiring replacement.


It's a different manufacture, true, but Rosewill build quality is about the same.
a c 176 U Graphics card
December 17, 2008 11:27:45 PM

Your slow P4 simply means things won't run as fast as they could. (the cpu is bottlenecking the GPU) A substandard PSU can kill devices in your computer. As I mentioned, a system with a 9800GT is supposed to have 22A on the 12V rail, you have 20. Do you have any idea how dirty the power will be if the PSU you have tries to output 22A? With any luck, the fuse in the PSU will blow before you lose a drive or card. eVGA might simply have heard you have a 7month old 500W PSU, and ASSumed it was ok.
December 17, 2008 11:39:00 PM

Seriously, just buy a psu from a local pc shop. If for some odd reason, it doesn't fix your problem (DOA, wasn't power problem) then you can probably return it. Check return policies first. Everything you told us points to PSU failure. That PSU is just crap, the power is probably dirty and hell and you could possibly injure yourself if you try overclocking on a failing power supply. It matters not the watts of a PSU but the quality of power, i.e. good design, enough amps on the right rails, etc.
a b U Graphics card
December 18, 2008 12:23:07 AM

Can some one explain to me why people are so hesitant on getting good PSUs??
a c 176 U Graphics card
December 18, 2008 12:44:26 AM

Because it costs without increasing the performance of the computer. Why spend $50-$75 on a quality PSU if you can run your computer on one that only costs $25? You think this way until you have one die on you, or you read enough about them dying on people.
December 18, 2008 5:06:47 AM

well of course its pci e! the last AGP card was like...ages ago :lol: 

just make sure the GPU either has a 6 pin power plugged in, or both molexes are plugged in. i wouldn't even power it on without two molexes :??: 

imo you should also oc that PD... get an aftermarket heatsink if you haven't got one yet - those things are HAWT
a c 176 U Graphics card
December 18, 2008 8:22:55 AM

Rosewill? Not the best brand of PSU there. The Q6600 is fine, but I wouldn't buy that PSU. That PSU was $70, there is better out there.

http://www.newegg.com/Product/Product.aspx?Item=N82E168...

Here is a SeaSonic built 500W PSU with 34A on the 12v rail. The Rosewill claims to have 40, but I doubt it can really do that. Its the same price, but you'll have to shell out another $8 or so for shipping. According to the bundle you save $20, so this will cost you $28 more. Considering the difference in quality, thats worth it.
a b U Graphics card
December 18, 2008 10:08:34 AM

4745454b said:
Because it costs without increasing the performance of the computer. Why spend $50-$75 on a quality PSU if you can run your computer on one that only costs $25? You think this way until you have one die on you, or you read enough about them dying on people.

True, but blowing a bad PSU can cost you in the long run.
a b U Graphics card
December 18, 2008 10:12:24 AM

publicenemy219 said:
Ok, im probably going to buy the PSU. But is it going to increase performance?


Quote my friend:
Quote:

Alright listen, It wont increase performance, but if ur psu goes down it might take other parts with it, IE: i lost a graphics and a processor cracked due to a psu going bad,(i threw it all out). Now when a psu overheats it turns down the output wattage so it doesnt burn out. <<- Thats a cheap psu. A good decent one like corsair and pc power & cooling, these dont do that. One part of the computer u should NEVER GO CHEAP ON IS THE PSU.
a c 176 U Graphics card
December 18, 2008 10:38:05 AM

About the only think I skimp on anymore is my case. I'm currently use the "bio hazard" case from geeks.com. For about $35 shipped, its an awesome case. Comes with an 80mm side fan, and supports 80, 92, and 120 front intake and upper rear exhaust. I even cut a blow hole 120mm fan in it. My idle temps are now in the low 30s. I can't imagine a case working any better. Sure the metal is flimsy, but that made it easier to cut the blow hole.

I guess we could claim that it increases performance. You'll still have performance for the week while your out looking for a replacement cheap psu.
December 18, 2008 4:09:41 PM

Thats an ok unit. Here's a old review of the 650W version:
http://www.jonnyguru.com/modules.php?name=NDReviews&op=...
Note that the when the unit was pressed past its limit in the 'hot' test it failed - it blew out.
You might never have the same conditions - but something to think about.
(also, like the 650W, the 430W is likely also really one rail - but thats a good thing (IMHO)).

If you're going to buy a new one, the one Shadow recommend would probably be a better choice:
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
Its only 34.99 with the rebate - and with the current promo you get another 20% off - thats a good price.


(I found this one review with a quick search. Its in german - but if you look at the graphs and the final summary you'll get the idea - it does pretty well. Might be other reviews out there if you look harder)
http://www.technic3d.com/article-777,1-corsair-cmpsu-40...
December 18, 2008 6:44:31 PM

That one looks like a smaller unit then the other - only 300W with 15A on the 12V.
Definetly don't use that one....
a b U Graphics card
December 19, 2008 11:17:26 AM

^+1.
December 19, 2008 6:32:05 PM

Hmmm, I think I'd still stick with the Corsair unit that Shadow found.

Silverstone is a good unit and all, but the Cosair has a single 30A 12V and the above is 2 18A 12V, plus
the combined on the two is 29A, so its actually a bit less then the Corsair. Also, being ATX 2.2 compliant means that one rail is dedicated to the cpu so you have a max 18A on the other rail for the rest of the system. And with OCP you're not sharing amps between the rails. Finally, they themselves only rate the unit for up to a 9600GT.

Good unit, but the Corsair is a bit better for the op's needs and its still at a decentprice at $49.99. (those discounts didn't last long).
a b U Graphics card
December 19, 2008 6:57:55 PM

^+1. The ST400 is good but I would only recommend it to a 8600GT or lower based GPU.
a c 236 U Graphics card
December 19, 2008 8:38:42 PM

OMG you guys are a bunch of morons!!!!

I know people who run the 9800GT off a Dell 305w PSU. That card is not a power hog. I ran a 8800GT with only one 4 pin connector, and it never effected FPS in games like Crysis, Bioshock, and AoC. The issue with your PC is your slow CPU, not the GPU.
a c 176 U Graphics card
December 19, 2008 9:54:18 PM

Thats because the 9800GT needs 22A on the 12v rail, which the Dell 305W provides. The Dell 305W supplies 22A on the 12v rail, the 375W supplies 30A. They can run it because it supplies the power the card needs. Now, what does the OPs "500W" PSU supply on the 12v? 20A. Is 20A > 22A? Who is the moron?

Relatively speaking, the 9800GT is not a power hog. As I and others are pointing out, the OPs PSU is not powerful enough, nor is the quality there. Spending ~$50 is a good idea, as he won't have to worry about power.
a b U Graphics card
December 20, 2008 4:13:40 AM

CT, think of it in these terms, like he said a 400 watt corsair unit may put out 32 amps on the 12v+ rail, however some 550 watt units only put out 24 amps. So which is really a better supply? Clearly the corsair unit is more powerful, because it would be able to produce more clean, reliable power. I used to make that same mistake. Don't look at the wattage alone, pay more attention to the amperages.
December 20, 2008 5:45:41 AM

^dude. my 9600GT reccomends like 26amps on the 12v rail. i have a crappy thermaltake OEM 430w which outputs 16 A on the 12v rail. perfectly fine overclocked cpu and gpu.
December 20, 2008 2:11:04 PM

The recommendations on the boxes of the cards are typically for the entire system, not just the card.
And they're perhaps padded a bit by the manufacturers - just to play it safe.

That being said, what 4745454b said is still essentially true - the Dell units do put out a lot of power on the 12V for their overall wattage and therefore there's less chance of an issue with them with a card like the OPs.

V3NOM, your 9600GT, if its a 500MB model, uses about 61W or slightly over 5A for just the card. Call it 6A since you overclock. Not knowing anything else about your supply, that leaves you with about 10A for the rest of your system according to what you say above. So depending on what else you have, that may be sufficient and thats why you haven't had any issues. Or you may be lucky and just haven't had any problems...yet.

So reviewing what we know so far:
- Upgraded his card from 8600GT to a 9800GT, didn't see a change in frame rates.
- Has a Intel(R) Pentium(R) D CPU 3.00GHz
- 9800GT has two molex connectors on it, only one of which is hooked up
- Current PSU doesn't have spare molex for the second connector; not clear is a PCIe is available off it but
seems unlikley from the photos of the unit.
- Current PSU is 500W with 20A on a single 12V rail. The PSU is Tier 5 PSU.
- 9800GT will consume ~10A of the avialable 20A (probably more like 11A since its an OC version) when Gaming. You're left with about 9A for the rest of the system.

So what are the options:
- overclock the cpu to see if its the bottleneck.
- get a Y-cable for one of the molex and use that to hook up the other connector on the GPU to see if thats the issue.
- get a new PSU with known sufficient power and enough connectors to go around.

Depending on budget and tolerance for risk, you pick one of these: (alot like investing in todays market
:-) ). If the OP has $50.00, he can get a new, solid PSU and, even if it isn't the cure, it will make doing either of the other two items alot safer in the long term (you won't need the Y cable anymore actually).
The current PSU is a Tier 5 unit - Shadows example of what can happen with poor PSU's would be enough to make me get a new one, especially if I was going to be overclocking with it.
December 22, 2008 6:13:15 AM

this is the current PSU, do you think i need to upgrade the current one( for gaming) or not?



Thanks for any replies.. :bounce: 
December 22, 2008 7:38:32 AM

The 10A TDP given is theoretical, the card takes up no where near that value. If the card needs more than the theoretical value, chances are the card power regulator cannot supply such power anyway.

The 22A is recommendation, which is different for different system

Last but not least, the lack of power means the system will hang and shut down. Lack of power doesn't equate to low frame rate, because low frame rate means the card is still actually working. Lack of power causes error, not run slower, but the PSU protection will shut it down. Or it simply blows up, lol.

Publicenemy219, the PCIE cable is simply a power cable plug into your graphic card. Open your casing, find for any power cable plug into the card. If theres no cable connected to the card, there's your problem

Pentium D is the old P4, just 2 of them. Its still slow.
December 22, 2008 8:33:23 AM

18A on TWO RAILS! that's MORE than sufficient! probably double what you need...
a c 176 U Graphics card
December 22, 2008 9:36:14 AM

Why not just upgrade? 680W for $40, its hard to beat that. Then again, maybe your current PSU is enough, it has 35A on the 12v rails. If you had bothered to read this thread at all however, you'd know what my answer would be. WATTAGE ISN'T EVERYTHING. What quality do you think that 680W would be, if its cheaper then most other units? I'd be surprised if that PSU weighs even half a pound.

I can't say whether your current PSU is good enough either. Either PSU will run the 9800GT, the question is for how long.
a b U Graphics card
December 22, 2008 10:10:34 AM

^+1
a b U Graphics card
December 22, 2008 11:15:20 PM

^ Good PSU. Not sure if the place ment of the fan matters. That depends on your case.
December 23, 2008 12:34:23 AM

I haven't read a review for that unit myself but its rated a Tier 2 unit, so it shoud be good.
The fan is on the underside of the unit - thats good. For most cases where the PSU sits up top, it will suck up hot air from the case below it and push the hot air from the case and the PSU right out the back grill. You shouldn't have any issues.
!