Gigabyte 7970 RMA

[EmSti]

All air cooled. Here is my current layout (I just reconfiged the boxes to get 4 gpu engines (3 cards) into Red Dragon).

Blackdragon

GPU Brand	Voltage	Power Limit	Core Clock	Memory Clock	Fan Speed	Temp C
Gigabyte GV-R797OC-3GD	1168	+20	1200	1500	auto	67
Gigabyte GV-R928XOC-3GD REV2	stock (1200)	+20	1200	1500	auto	63
MSI R7970 Lightning	1175	+20	1200	1500	auto	59 (right above bottom case fans)

Red Dragon

GPU Brand	Voltage	Power Limit	Core Clock	Memory Clock	Fan Speed	Temp C
Gigabyte GV-R928XOC-3GD REV2	stock (1200)	+20	1200	1500	auto	72
Gigabyte GV-R928XOC-3GD REV2	stock (1094??)	+20	1200	1500	auto	65
XFX FX-799A-6NF9 HD 7990 gpu1	stock (1165)	+20	1200	1500	auto	74
2nd 7990 gpu (one 7990 card total)	stock (1135)	+20	1200	1500	auto	62 This side of card above bottom fans

Each case has 3 graphics cards, the lower card are mounted in the lower power supply hole and tied in place. The bottom cards are attached by PCI-E extenders. This allows me to have extra space between the cards. Using Sabertooth slots 1, 4 and 6 a.k.a. PCIe 2.0x16_1, X16_3 and 16_4.

I rearranged a lot in the cases to keep air flowing. Modified the Cool Master HAF 932 side panels to include 200mm fans (cut through the plastic of one panel and added fan grill, replaced the panel on the other). Power supplies are mounted at the top back of the cases, exhausting out the back. Put 2 120 mm fans in the bottom of each case. Mounted the Corsair Hydro Series H100 to exhaust out the top front bays. Change the default case fans; adding high flow 140mm out the back and 200mm intake fan in the lower drive bay. Added 200 mm fan on top of each case, pulling air out; these are external mounted with fan grills on top (they don't quite fit in the case with the PSU at the top). So 4 intake fans in bottom half of the case and 4 exhaust on the top (not including the PSU, count 2 for the H100). I can upload picks if desired. These boxes ended up this way back when I was running Donate as hard as possible and Donate generated the most heat on the 7970s.

Red Dragon pulls too much power for the Antec 1000 mounted in the pc, the power to the bottom 2 cards is supplied by an extra Antec 1200 that has 3V issues, but good 12V rails. I used Add2PSU Multiple Power Supply Adapter to control the power supplies together (too lazy to hot wire it myself). Handy setup, because I can split the PSUs across 2 UPSes.

[STE\/E]

Okay & Thanks for the Info ...

I would like to know what the Stock voltage reads on those cards that say stock voltage ... Reason being is I have 6 errrrr 5 now 7970's & the stock voltage is all over the place with them, doesn't seem to be any set stock voltage for them ... :/

[EmSti]

I updated the table with the stock numbers as indicated by TechPowerup GPU-Z when all were under full crunching load. I read that the Gigabyte R9 280x rev2 cards were 1.2V, so I found it odd that the one card is 1.094V. However, it does have a different version of the BIOS. I guess so long as it is running happy I am not going to worry about it.

When it comes to 7970, I seem to recall that the default voltage could vary from card to card even within the same model base of its ASIC number (lower the number, the lower the default voltage and the higher the O.C. potential or something like that). I would not be surprised to see varying voltages on them. When I had a bunch of 7970s before the sell off to move to New York, if took too much time to fine tune to the right voltage level for heat and speed. Using MSI AfterBurner, I would hit the reset and see what the default was for the 7970 cards.

[zombie67]

Pictures!!

[EmSti]

I will as soon as I get a chance.

[Fire$torm]

Pictures!!

[Tank_Master]

be glad you at least can RMA yours, my sapphire 7970 dies 2 years 1 month after i bought it. Pisses me off...

[EmSti]

blackdragon.jpg
BlackDragon inside (2).jpg
RedDragon.jpg
RedDragon 7990 in lower PSU hole.jpg

I didn't include inside picture of Red because it is basically the same as Black but with an Antec 1000 PSU. Behind Red is the extra PSU, cables going to the GPU and the main cable going to the ADD2PSU module. The picture of BlackDragon is over a year old, but it still looks the same from the outside. I used a dermal type device with a circle cutter attachment to cut the hole in the plastic side panel.

[conf]

Finally my Gigabyte 7970 broke down this week, but its 23 months old and maybe the error is inside guarentee time,
dont know exactly but I send it back to my trader.
My RAC will go down a little but I already bought this ones:

MSI Big Bang-XPower II, X79, LGA2011, DDR3
Intel Xeon E5-2687W, 8x 3.10GHz, Sockel-2011

Hope I have the other parts to make it run. It has 7 PCIe slots and I want to use some Nvidias, but not the
expensive ones, for the projects who need a little bit of Gpu power. Seti Einstein WCG etc.
The 8/16 cores should make me slightly stronger on CPU Projects.
Lets see if I find some good days to assemble this one. Lot of work cause I need my biggest tower for this XL-ATX mainboard
so another system has to move to make place for the new one.

[EmSti]

Good luck on the return and new build.