EVGA nVidia 770

Ricky Smith

macrumors regular
Original poster
Jan 28, 2006
219
0
Boston, MA
So I seem to be getting conflicting reports,

I have a EVGA nVidia 770 that has an 8pin and 6pin connector, my Mac Pro only has one 6pin cable currently. I've seen some results saying I can just stick it in and it'll work, others saying I need an adapter.

So my question is what is the correct method of getting this card to work? It was a PC version.
 

Robert Davies

macrumors 6502
Jul 28, 2011
316
3
People's Republic of Wrexham
So I seem to be getting conflicting reports,

I have a EVGA nVidia 770 that has an 8pin and 6pin connector, my Mac Pro only has one 6pin cable currently. I've seen some results saying I can just stick it in and it'll work, others saying I need an adapter.

So my question is what is the correct method of getting this card to work? It was a PC version.
One thing's for sure, just sticking in the card won't work.

You'll need another cable and a 6 -> 8 pin adapter.

If you haven't already, checkout this thread:

http://forums.macrumors.com/showthread.php?t=1440150

----------

Adapter 6pin -> 8pin:

http://www.ebay.com/itm/330785137873
 

Ricky Smith

macrumors regular
Original poster
Jan 28, 2006
219
0
Boston, MA
One thing's for sure, just sticking in the card won't work.

You'll need another cable and a 6 -> 8 pin adapter.

If you haven't already, checkout this thread:

http://forums.macrumors.com/showthread.php?t=1440150

----------

Adapter 6pin -> 8pin:

http://www.ebay.com/itm/330785137873
Also to add the model that it specifically is 04G-P4-3773-BR

So that adapter connects right to the Mac Pro Logic Board for the AUX PCIe Power correct? I will need to power this card with two 6 Pin (or 1x 6pin and 1x that adapter you posted)

I'm hoping that cable is pretty standard and I can pick it up locally
 

Ricky Smith

macrumors regular
Original poster
Jan 28, 2006
219
0
Boston, MA
EVGA nVidia 770

I don't get it that message seems to contradict itself what is the otherwise no what computers fall into the otherwise no

It's a 2010
 
Last edited:

Ricky Smith

macrumors regular
Original poster
Jan 28, 2006
219
0
Boston, MA
Well this is a Mac forum and the Mac Pro section ;) that's why I was confused. Alright so I picked up another cable and connected it but still getting just black

One thing I've noticed is it does chime, but after a minute or so my speakers which are just connected to USB just click repetitively as if the computers restarting or still starting up. I also cannot see the mac pro via remote desktop.

I've confirmed via ping that it's in a reboot loop, it comes online to ping for a few seconds then the speakers click and ping stops responding. I've bare boned it (removed all but my system drive) to make sure that it's not too much power on the PSU with my other drives.

If I remove the NVidia card the system starts up headless just fine (no video card or with the previous video card starts up). But with the new NVidia card installed it just goes into an infinite loop
 
Last edited:

Gav Mack

macrumors 68020
Jun 15, 2008
2,192
17
Sagittarius A*
You need both mini PCIe power cables plugged in, one connected to the 6/8 adaptor into the 770 for it to work.

If you are still getting nothing hopefully it's just a card problem, I know through experience that having no power cable in a card that needs one and only one when it requires two is not good for the health of the power supply. They smell rather a lot when a rail gets burnt out whether Mac Pro or normal PC.
 

MacVidCards

Suspended
Nov 17, 2008
7,506
1,029
Hollywood, CA
770 checks for ground on 8 pin, you need an 8 pin adapter. Most EVGA cards ship with a dual 6 into 8. The side with only black and yellow (no brown) wires will work to test. If wires are all black, use the side with fewer wires.

This will only be good for testing.

GTX680 cards with 8 pin will work with just 6, but 770 cards check for 8. Absolutely will not work if it doesn't see ground there
 

Ricky Smith

macrumors regular
Original poster
Jan 28, 2006
219
0
Boston, MA
770 checks for ground on 8 pin, you need an 8 pin adapter. Most EVGA cards ship with a dual 6 into 8. The side with only black and yellow (no brown) wires will work to test. If wires are all black, use the side with fewer wires.

This will only be good for testing.

GTX680 cards with 8 pin will work with just 6, but 770 cards check for 8. Absolutely will not work if it doesn't see ground there
Ok I'll have to pickup an adapter then