Converting a 6 pin PCI-e pr 4 pin Molex to 8 pin PCI-e 2.0 connector

amritsareen · 06-03-2008, 08:30 PM

Hi,

I recently bought a 9800 GX2 Graphics card. Full specs can be found at eVGA's website.

The graphics cards minimum requirements states 40A on the 12V rail. It also requires both the 6 pin PCI-e and 8 pin PCI-e connectors.

The PSU I have is Apevia's Iceberg 680W.

This PSU does not come with an 8 pin PCIe connector. Also, it delivers 22A on 12V1 and 24A on 12V2.

I was wondering if I can find a simple power converter that delivers the appropriate current from the 12V rails, either converting a 4 pin molex or my other 6 pin PCI-e connector. I know that the 6 pin provides 75W and the 8 pin provides 150W and also that the 8pin has 3 pins that use the current from the PSU. The rest of the pins are just ground. If this is the case, then theoretically, I should be able to convert a 6 pin into an 8pin.

According to eVGA Tech Support, this solution is not recommended and they said I should purchase a new PSU.

Any suggestions?

For a detailed description of the 8 pin connector that I'm talking about, please visit this page: http://www.playtool.com/pages/psucon...ml#pciexpress8

Thanks in advance for any help.

Houndog777 · 06-05-2008, 06:23 AM

Hi,
Here is a list of recommended PSU's....
http://www.evga.com/articles/397.asp

I'd strongly recommend investing in one of those, and selling your Apevia Iceberg.

amritsareen · 06-05-2008, 12:13 PM

Thanks for the link Hounddog. The link clearly suggests that I invest in another power supply.

I also spoke to eVGA Tech Support and they mentioned that the converter route will not suffice.

I was just trying to experiment to see if it worked or not, maybe save a couple hundred more bucks.

Expensive cards use expensive PSU's. No way around it :)

06-03-2008, 08:30 PM	#1 (permalink)
amritsareen Registered User Join Date: Jun 2008 Location: San Diego, CA Posts: 6 OS: Windows Vista Ultimate 64 bit	Converting a 6 pin PCI-e pr 4 pin Molex to 8 pin PCI-e 2.0 connector Hi, I recently bought a 9800 GX2 Graphics card. Full specs can be found at eVGA's website. The graphics cards minimum requirements states 40A on the 12V rail. It also requires both the 6 pin PCI-e and 8 pin PCI-e connectors. The PSU I have is Apevia's Iceberg 680W. This PSU does not come with an 8 pin PCIe connector. Also, it delivers 22A on 12V1 and 24A on 12V2. I was wondering if I can find a simple power converter that delivers the appropriate current from the 12V rails, either converting a 4 pin molex or my other 6 pin PCI-e connector. I know that the 6 pin provides 75W and the 8 pin provides 150W and also that the 8pin has 3 pins that use the current from the PSU. The rest of the pins are just ground. If this is the case, then theoretically, I should be able to convert a 6 pin into an 8pin. According to eVGA Tech Support, this solution is not recommended and they said I should purchase a new PSU. Any suggestions? For a detailed description of the 8 pin connector that I'm talking about, please visit this page: http://www.playtool.com/pages/psucon...ml#pciexpress8 Thanks in advance for any help.

06-05-2008, 06:23 AM	#2 (permalink)
Houndog777 Registered User Join Date: May 2007 Location: Scotland, UK Posts: 2,683 OS: XPpro sp3 My System	Re: Converting a 6 pin PCI-e pr 4 pin Molex to 8 pin PCI-e 2.0 connector Hi, Here is a list of recommended PSU's.... http://www.evga.com/articles/397.asp I'd strongly recommend investing in one of those, and selling your Apevia Iceberg.

06-05-2008, 12:13 PM	#3 (permalink)
amritsareen Registered User Join Date: Jun 2008 Location: San Diego, CA Posts: 6 OS: Windows Vista Ultimate 64 bit	Re: Converting a 6 pin PCI-e pr 4 pin Molex to 8 pin PCI-e 2.0 connector Thanks for the link Hounddog. The link clearly suggests that I invest in another power supply. I also spoke to eVGA Tech Support and they mentioned that the converter route will not suffice. I was just trying to experiment to see if it worked or not, maybe save a couple hundred more bucks. Expensive cards use expensive PSU's. No way around it :)