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9800GT with only one 6-pin PCIe Power Pin

Last response: in Graphics & Displays
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December 12, 2011 3:26:42 PM

Hi there, I am thinking about upgrading my graphic card from HD 4670 to 9800 GT or 9800GTX. The problem is that I only have one 6-pin PCIe connectors on my PSU whereas the 9800GT or 9800GTX needs two. Would it be okay if I use the one proper 6-pin power connector and one molex to 6-pin power adapter(the one that takes up two molex slots)?

My PSU is OCZ StealthXStream 500 Watts (UK Version). (It has two 12volt rails each giving 18amps equaling 36amps, I might be wrong about this but that is what I see on the spec chart: http://www.ocztechnology.com/resources/drivers/500wchar...)

Specifications of my computer just to let you know what my current power consumption is like:

Dual Core E5200 OC @3.12 ghz @1.072 volts(from CPU-Z), 1.13-- volts(set in Bios) [will be OCing to 3.5ghz],
1x SATA HDD, 1x SATA DVD R/W, HD 4670, 120mm and 80mm case fans, 4GB 800mhz Ram, USB Floppy Drive and other than that using USB pendrives when needed.

So given my situation do you guys think it will be okay to use one proper 6-pin connector and one molex to 6-pin adapter ? I read this: http://www.tomshardware.co.uk/forum/307467-15-palit-980... and his problem was solved by connecting two molex connectors but I was just wondering if it is actually safe to use this work around ?

PSU Webpage: http://www.ocztechnology.com/ocz-500w-stealthxstream-po...
Graphic Card: http://www.overclockers.co.uk/showproduct.php?prodid=GX...

Cheers.
December 12, 2011 3:35:34 PM

Or should I just get a HD4830 which requires only 1x 6-pin power connector.(just saw this one and seems to be equivalent to 9800gt) ?
a c 275 U Graphics card
December 12, 2011 3:38:38 PM

If your psu has adequate power, and I think it should, then using an adapter should be OK. Many cards will come with one.

I don't know that I would buy such an old technology graphics card, or put that much faith in the quality of an older OCZ psu.
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a c 273 U Graphics card
December 12, 2011 3:38:56 PM

The 9800GT should only require a single six pin PCIe connector.
a b U Graphics card
December 12, 2011 3:44:24 PM

yes you should be fine using the molex to 6-PIN adopter.

December 12, 2011 3:45:12 PM

Thanks for the reply guys.
Geofelt
In the other thread someone said it require 22Amps on 12v whereas mine has two 12volts giving out 18amps so wouldnt that be okay ? and I am only going for old technology because this is a two year old PC and I only have PCIe 1.1, I will upgrade sometime in june 2012 after ivy bridge comes out but for now I want to play games like BF3, NFS the run and driver.

mousemonkey
If it requires one PCIe 6-pin then why does the nVidia website say two ?
http://www.nvidia.com/object/product_geforce_9800gt_us....
December 12, 2011 3:46:59 PM

also do you guys think HD4830 would be a better option for me considering I only have PCIe 1.1 and one proper 6-pin connector because I am thinking that I might not be able to get the extra juice out of the better 9800gtx card
a c 273 U Graphics card
December 12, 2011 3:48:00 PM

I don't know but seeing as they are rebadged 8800GT's they probably don't need both. If you look at the pictures it only has one six pin plug.

a c 275 U Graphics card
December 12, 2011 3:53:20 PM

030910TA said:
Thanks for the reply guys.
Geofelt
In the other thread someone said it require 22Amps on 12v whereas mine has two 12volts giving out 18amps so wouldnt that be okay ? and I am only going for old technology because this is a two year old PC and I only have PCIe 1.1, I will upgrade sometime in june 2012 after ivy bridge comes out but for now I want to play games like BF3, NFS the run and driver.

mousemonkey
If it requires one PCIe 6-pin then why does the nVidia website say two ?
http://www.nvidia.com/object/product_geforce_9800gt_us....


The total +12v amps is rarely the sum of 12v1 and 12v2. Look on the data plate for your psu to find the combined max, or provide a link to your psu.
That said, the requirements are usually conservative to account for the possibility of old or poor quality psu's.

Do not worry about pci-e 1.1 vs. 2.0 or 3.0. Cards are compatible with any of them. The difference in speed is relevant ot only the most powerful cars made today, and minimal impact there either.

If you are planning a later upgrade to ivy bridge, why not start now by getting a great graphics card now in the first place and an appropriate psu to handle it?
You will not be wasting money now, since you could transfer the psu and card to the new build.
December 12, 2011 4:06:55 PM

geofelt said:
The total +12v amps is rarely the sum of 12v1 and 12v2. Look on the data plate for your psu to find the combined max, or provide a link to your psu.
That said, the requirements are usually conservative to account for the possibility of old or poor quality psu's.

Do not worry about pci-e 1.1 vs. 2.0 or 3.0. Cards are compatible with any of them. The difference in speed is relevant ot only the most powerful cars made today, and minimal impact there either.

If you are planning a later upgrade to ivy bridge, why not start now by getting a great graphics card now in the first place and an appropriate psu to handle it?
You will not be wasting money now, since you could transfer the psu and card to the new build.


cheers geofelt. the link for PSU:http://www.ocztechnology.com/ocz-500w-stealthxstream-po...

Which graphic card would you recommend ? my budget is about £50 - £70. I was looking at the HD5770 ot HD6770 do you think the speed of these cards will be affected by the PCIe1.1 ? Would it be better to get an nVidia Graphic card as some games e.g. NFS shift worked better on nVidia graphic cards.

I dont want a hardcore gaming setup as I have a PS3 but some less demanding games cost like £10 cheaper on PC than console versions so I will be saving money there.
a c 275 U Graphics card
December 12, 2011 4:34:12 PM

030910TA said:
cheers geofelt. the link for PSU:http://www.ocztechnology.com/ocz-500w-stealthxstream-po...

Which graphic card would you recommend ? my budget is about £50 - £70. I was looking at the HD5770 ot HD6770 do you think the speed of these cards will be affected by the PCIe1.1 ? Would it be better to get an nVidia Graphic card as some games e.g. NFS shift worked better on nVidia graphic cards.

I dont want a hardcore gaming setup as I have a PS3 but some less demanding games cost like £10 cheaper on PC than console versions so I will be saving money there.

1) It would appear that your psu can deliver up to a combined 40a, so you are very good there.

2) Here is what EVGA recommends for their graphics cards:

GTX550ti needs 400w with 24a on the 12v rails plus one 6-pin PCI-E power lead.

GTX560 needs 450w with 24a on the 12v rails plus two 6-pin PCI-E power leads.

GTX560Ti needs 500w with 30a on the 12v rails plus two 6-pin PCI-E power leads.

GTX570 needs 550w with 38a on the 12v rails plus two 6-pin PCI-E power leads.

GTX580 needs 600w with 42a on the 12v rails plus one 6-pin and one 8-pin PCI-E power lead.

GTX590 needs 700w with 50a on the 12v rails plus two 8-pin PCI-E power leads or 4 6-pin power leads.

3) No graphics card you can buy today will be noticeably slowed by pci-e 1.1.

4) 5770/6770 are quite good cards. They are comparable to the GTX550ti.
You could use either. If you currently have a Nvidia card, I would stick with that because you will not need to uninstall nvidia drivers and install amd drivers.

5) Sorry, I am not much help with shopping using pounds.

December 13, 2011 9:39:43 AM

geofelt said:
1) It would appear that your psu can deliver up to a combined 40a, so you are very good there.

2) Here is what EVGA recommends for their graphics cards:

GTX550ti needs 400w with 24a on the 12v rails plus one 6-pin PCI-E power lead.

GTX560 needs 450w with 24a on the 12v rails plus two 6-pin PCI-E power leads.

GTX560Ti needs 500w with 30a on the 12v rails plus two 6-pin PCI-E power leads.

GTX570 needs 550w with 38a on the 12v rails plus two 6-pin PCI-E power leads.

GTX580 needs 600w with 42a on the 12v rails plus one 6-pin and one 8-pin PCI-E power lead.

GTX590 needs 700w with 50a on the 12v rails plus two 8-pin PCI-E power leads or 4 6-pin power leads.

3) No graphics card you can buy today will be noticeably slowed by pci-e 1.1.

4) 5770/6770 are quite good cards. They are comparable to the GTX550ti.
You could use either. If you currently have a Nvidia card, I would stick with that because you will not need to uninstall nvidia drivers and install amd drivers.

5) Sorry, I am not much help with shopping using pounds.


no worries, thanks for the help, since the GTX550ti requires 400watts I think I should be ok with HD 6670,6750 or 6770 with my current PSU for now.
!