Tom's Hardware > Forum > Graphic & Displays > Graphics Cards > power supply and HD4850 Question

power supply and HD4850 Question

Forum Graphic & Displays : Graphics Cards - power supply and HD4850 Question

Tom's Hardware: Over 1.4 million members in 6 different countries available to answer all your high-tech questions. Sign up now! Its free!
Ask the community Add a reply
Word :    Username :           
 
Gridener   06-21-2008 at 02:11:03 PM

I was wondering if I could upgrade to a HD4850 without upgrading my power supply. I'm using an Ultra X-Connect 400 watt modular power supply but the requirements say you need at least 450 watts.

So can I keep my same power supply?






You should be able to see my computer in my profile if you need to.

Message quoted 1 times
Message edited by Gridener on 06-21-2008 at 02:12:00 PM
Add a reply
Sponsored Links
Register or log in to remove.
robertito   06-21-2008 at 02:51:16 PM
- 0 +

How many volts on the 12volt rails? This is more important than the wattage.

Reply to robertito
slashzapper   06-21-2008 at 02:57:15 PM
- 0 +

Hey i am sorry dude you are going to have to get a new power supply ,


this one only has 20 amps on the 12 rails, it wont do

get something like this
http://www.newegg.com/Product/Prod [...] 6817139005

i have this one it can run 2 cards very easily , plus its got a rebate on it ..you cant go wrong

Message quoted 1 times
Reply to slashzapper
dagger   06-21-2008 at 03:17:19 PM
- 0 +

slashzapper wrote :

Hey i am sorry dude you are going to have to get a new power supply ,

 


this one only has 20 amps on the 12 rails, it wont do

 

get something like this
http://www.newegg.com/Product/Prod [...] 6817139005

 

i have this one it can run 2 cards very easily , plus its got a rebate on it ..you cant go wrong


That depends. You said rails. If it's only one rail at 20 amps, it's not enough. If it's 2 rails at 20amps each, it is.

------------------------------ Q6600@3.6ghz, GA-EX38-DS4 motherboard, 8gb 800mhz ddr2 4-3-3-12, 8800GTS(g92)@780mhz, 1TB + 1.5TB hdds, 850watt psu
 Reply to dagger
alfrido   06-21-2008 at 03:18:05 PM
- 0 +

What are your specs. It probably will play but the psu life will shorten.

Reply to alfrido
slashzapper   06-21-2008 at 03:22:32 PM
- -1 +

His old one is 20amps on a single rail = not good ,

 

The corsair is 52amps on single rail=2 cards fire power for $99


Message edited by slashzapper on 06-21-2008 at 03:24:08 PM
Reply to slashzapper
WR2   06-21-2008 at 03:24:34 PM
- 0 +

Gridener wrote :

Ultra X-Connect 400 watt modular power supply


If the data plate on your PSU looks like this:
http://techabsorbed.com/images/xconnect400/IMG_1458.jpg
your PSU is only providing 16Amps of +12V power. Not enough for the CPU and 4850 video card.

Reply to WR2
slashzapper   06-21-2008 at 03:31:10 PM
- 0 +

Bottom line you need to buy a new PSu.

Reply to slashzapper
Gridener   06-21-2008 at 03:35:59 PM
- 0 +

Alright thanks guys for your imput. Looks like I have some shopping to do! :)

Reply to Gridener
johnnyq1233   06-21-2008 at 03:36:49 PM
- 0 +

look if you can afford the video card then you can afford the power supply!
Like why ask if a 400 watt power supply is good enough if it clearly states on the box 450 watt power supply minimum!

Message quoted 1 times
------------------------------ Intel C2D E8400 @3.0GHZ, Gigabyte GA-EP45-UD3L motherboard, 4GB OCZ vista platinum DDR2-1066 , Seagate320GBsataII 16MB HDD, BFG GTS250oc 512 GDDR3...3Dvision glasses and samsung 120HZ screen.
 Reply to johnnyq1233
WR2   06-21-2008 at 03:51:52 PM
- 1 +

johnnyq1233 wrote :

Like why ask if a 400 watt power supply is good enough if it clearly states on the box 450 watt power supply minimum!

It's not that cute and dried. There are many good 400W (and even some 350+W) PSUs that could handle a 4850 video card. It all depends on the actual power the PSU can provide and the total power draw with the 4850 in that system. An E2180 CPU will draw a lot less power than an OC'd Q6600 for example. Some people will have several HDDs and optical drives while others only have one each.
It was a fair question.

Here is the 4850 power draw with a Core2 Extreme X9650 3.0Ghz CPU
http://common.ziffdavisinternet.com/util_get_image/21/0,1425,i=213077,00.jpg
from: http://www.extremetech.com/article [...] 905,00.asp

Reply to WR2
dirtmountain   06-21-2008 at 04:01:53 PM
- 0 +

The single 4850 draws more then double the power at load than BOTH of your old cards in SLI did.
http://www.atomicmpc.com.au/forums [...] c=7&t=9354
If you get the 4850 you won't be able to use it for future SLI though, you'd need a Nvidia GPU for that.

Reply to dirtmountain
mihirkula   06-21-2008 at 05:11:55 PM
- 0 +

This Corsair 750tx is an even better deal than the one mentioned above.

http://www.buy.com/prod/corsair-tx [...] 78325.html

$100 for a 750w corsair is brilliant.

Message quoted 1 times
------------------------------ Intel E6750 * Gigabyte GA-P35-DS3L * Galaxy 8800GT 512mb 620MHz* Corsair VX450 * 2GB Transcend 667* 2x120GB Seagate SATA * Altec Lansing ATP3*
 Reply to mihirkula
cliffro   06-21-2008 at 05:59:44 PM
- 0 +

mihirkula wrote :

This Corsair 750tx is an even better deal than the one mentioned above.

http://www.buy.com/prod/corsair-tx [...] 78325.html

$100 for a 750w corsair is brilliant.



And It was tested by [H]ardOCP and passed every test

Quote :

The Bottom Line

With the Corsair TX750W, Corsair has set out to raid the high end market and with the TX750W they have fielded a good candidate. The TX750W makes a very good follow up to the HX line with amazing 12v voltage regulation, good efficiency values, great build quality, good DC output quality, and quiet operation. As always there is room for improvement as we saw less than stellar regulation on the 3.3v rail, a bit noisier than previous Corsair unit’s DC output, and some cooling that could use a bit of tweaking. However, coming in at a lean $179.99 at Newegg this unit is prize booty.

The Corsair TX750W represents a solid PSU value for those that need a lot of power. It is a good power supply, just not a great one.

------------------------------ Intel Xeon E3110@3.4ghz/GA-P35-DS3L/4gigs DDR2-800(@756)/EVGA GTX 260 Core 216 55nm
/2xSeagate 320 1x160/Corsair 850 TX/21" Dell P1130 & M781s/ Vista Ult. 64 SP1

 

Reply to cliffro

Ask the community Add a reply
Tom's Hardware > Forum > Graphic & Displays > Graphics Cards > power supply and HD4850 Question
Go to:

There are 494 identified and unidentified users. To see the list of identified users, Click here.

Forum map
Bestofmedia Forum ©
2000-2009 Bestofmedia Group
Page generated in 0.662 seconds
Please mind

You are about to answer a thread that has been inactive for more than 6 months.
If you still wish to proceed, please ensure that your posting is original and does not duplicate or overlap any prior responses to this thread.

Add a reply Cancel
Sponsored links
  • Ask the community now
  • Publish
Ad
Related Topics
See all relatives topics
They won a badge
Join us in greeting them