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HD 6970 Quadfire questions

post #1 of 50
Thread Starter 
Hey guys, so this is my first AMD rig and currently im in the process of getting 4 HD 6970's. The plan was to put them in quadfire (i believe thats the right term?) and had a few questions.

-Would an Antec TPQ-1200 be enough for them along with a fx-8150/8170 (Waiting for second revision)?

-Could i watercool just the 4 of them with a 360 rad or what sort of rad set up would i need if i decided to WC them in the future?

-Is there anything i should be aware of while about the cards, drivers cross-firing, etc? since im new to amd products

Thanks for the help guys!

Sidenote: oh the cards themselfs will not be overclocked, just the CPU

Edit: This would be for my AMD 600t build
Edited by DNytAftr - 11/7/11 at 1:49pm
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post #2 of 50
From what everyone is saying regarding BD, it uses a heap of juice as well, and puts out a tonne of heat.

Ken on these forums will hopefully pop in here and answer you, he has 2x 6990 iirc. I would say your setup would use up even more power than that, and by memory he is using 2x 1200w psus or similar...

And unless you have BD already, i definitely wouldnt recommend it.

Heat with 4 cards side by side will be a problem. Let alone if you had a BD as well.
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post #3 of 50
Yes, the TPQ-1200 will do it, however the HCP-1200 is a better buy.

For just the cards you would probably get away with a 360 rad BUT the general recommendation is 120mm per high power part, so a 480mm would be the recommended.

With four of those you're only going to see high GPU utilization in very high resolution or in very demanding games. Also, four on air will be very cramped and get very hot, if I were you I would go with water ASAP!

EDIT: In fact, definitely go for the HCP-1200 as it is supposed to be capable of sustaining over 1500w when required.
Edited by DirektEffekt - 11/1/11 at 10:55pm
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post #4 of 50
Most go with 3 6970s for games. Only benchmarks will show gains for 4 GPUs. A RX360 rad will cool them better than air alone, but if you could add another rad, it will cool better for sure. Not sure about the Antec PSU, but the Corsair AX-1200 will run your PC wit 4 GPUs.
     
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post #5 of 50
Thread Starter 
+reps
Quote:
Originally Posted by whippy View Post
From what everyone is saying regarding BD, it uses a heap of juice as well, and puts out a tonne of heat.

Ken on these forums will hopefully pop in here and answer you, he has 2x 6990 iirc. I would say your setup would use up even more power than that, and by memory he is using 2x 1200w psus or similar...

And unless you have BD already, i definitely wouldnt recommend it.

Heat with 4 cards side by side will be a problem. Let alone if you had a BD as well.
yeahh, ive been reading some reviews, people dont seem to like it =\\ i was thinking of waiting on the bulldozer and see if ther 8170 model (think thats what it was) fixes anything or wait for a second revision. But until then gonna keep using the x4 840

ahh, so i might need more psu, hmm maybe i could use the 1200 watt for the gpu and a 4-600 watt for cpu + otherstuff?

Quote:
Originally Posted by DirektEffekt View Post
Yes, the TPQ-1200 will do it, however the HCP-1200 is a better buy.

For just the cards you would probably get away with a 360 rad BUT the general recommendation is 120mm per high power part, so a 480mm would be the recommended.

With four of those you're only going to see high GPU utilization in very high resolution or in very demanding games. Also, four on air will be very cramped and get very hot, if I were you I would go with water ASAP!

EDIT: In fact, definitely go for the HCP-1200 as it is supposed to be capable of sustaining over 1500w when required.
Currently i have the tpq-1200 and a HCP-1200 but the HCP is being used in my sig rig Picked up the tpq a few weeks ago for $130 so seemed like a good buy.

Hmmm.. i think i could figure out a way to put two 240 rads into the case. but i know for sure i have room for a 360 at the moment so i prob could use a 360 but temps will be higher?

Quote:
Originally Posted by ezveedub View Post
Most go with 3 6970s for games. Only benchmarks will show gains for 4 GPUs. A RX360 rad will cool them better than air alone, but if you could add another rad, it will cool better for sure. Not sure about the Antec PSU, but the Corsair AX-1200 will run your PC wit 4 GPUs.
I was thinking of maybe in the future going with a 3 monitor set up and using eyefinity. So using a 360 rad would prob be fine for just the gpus (since i know i can fit a 360 without moding) and prob not be a good idea to add the cpu to the loop (maybe use an corsair H cooler or air cooling for that)?
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post #6 of 50
Quote:
Originally Posted by DNytAftr View Post
+reps
yeahh, ive been reading some reviews, people dont seem to like it =\\ i was thinking of waiting on the bulldozer and see if ther 8170 model (think thats what it was) fixes anything or wait for a second revision. But until then gonna keep using the x4 840

ahh, so i might need more psu, hmm maybe i could use the 1200 watt for the gpu and a 4-600 watt for cpu + otherstuff?

Currently i have the tpq-1200 and a HCP-1200 but the HCP is being used in my sig rig Picked up the tpq a few weeks ago for $130 so seemed like a good buy.

Hmmm.. i think i could figure out a way to put two 240 rads into the case. but i know for sure i have room for a 360 at the moment so i prob could use a 360 but temps will be higher?

I was thinking of maybe in the future going with a 3 monitor set up and using eyefinity. So using a 360 rad would prob be fine for just the gpus (since i know i can fit a 360 without moding) and prob not be a good idea to add the cpu to the loop (maybe use an corsair H cooler or air cooling for that)?
What resolution are you thinking of running? 120hz monitors? Just 3x6970 should be more efficient than my 6950/70(unlocked) + 6990, and i am maxing bf3 out at 5760x1080. And my cpu is the limiting factor atm, the cards still have more in them, almost at stock clocks.
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post #7 of 50
The Antec tpq is plenty enough.

Consider SB, an i5 2500k is plenty enough and can oc high enough for a quad-fire. With SB, consider the Asus P8P67 WS revolution as it supports 4 way crossfire.

A thick 360mm or better yet, a 480mm rad would be ideal for your gpus. Add a 240mm rad for the cpu in the mix.

I previously ran 3 6950/70s and I had great temps using HeatKiller blocks and a loop with two RX480 rads.
post #8 of 50
Thread Starter 
+reps
Quote:
Originally Posted by whippy View Post
What resolution are you thinking of running? 120hz monitors? Just 3x6970 should be more efficient than my 6950/70(unlocked) + 6990, and i am maxing bf3 out at 5760x1080. And my cpu is the limiting factor atm, the cards still have more in them, almost at stock clocks.
currently im running 1920x1080 but going to be picking up 2 more monitors in the future. Currently i got 2 xfx 6970 being shipped by friday and have 2 more that i could have coming (for $200 each). For $200 would a 4th 6970 be worth the performance gain over three 6970's? or might i still be better off with 3 because of (im guessing) scaling
Quote:
Originally Posted by wermad View Post
The Antec tpq is plenty enough.

Consider SB, an i5 2500k is plenty enough and can oc high enough for a quad-fire. With SB, consider the Asus P8P67 WS revolution as it supports 4 way crossfire.

A thick 360mm or better yet, a 480mm rad would be ideal for your gpus. Add a 240mm rad for the cpu in the mix.

I previously ran 3 6950/70s and I had great temps using HeatKiller blocks and a loop with two RX480 rads.
was trying to go with an all amd build since i already have 2 sandy bridge builds already (HTPC and my GF's build), but i managed to pick up a Gigabyte GA-990FXA-UD7 for $50 at microcenter (pricing error).

Hmm what would be a good 360 rad if i went that route and a good 480 rad?
Edited by DNytAftr - 11/2/11 at 12:33am
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post #9 of 50
I would just get the third card if you are definitely going eyefinity, see how it performs, then get the 4th only if you still think you need it.

Nice pick up. Maybe just sell the board lol. I might look at BD down the track with a revision and/or stepping and if/when the 95w versions come out. But for the moment my 955 is pulling its weight.
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post #10 of 50
Quote:
Originally Posted by DNytAftr View Post
+reps

currently im running 1920x1080 but going to be picking up 2 more monitors in the future. Currently i got 2 xfx 6970 being shipped by friday and have 2 more that i could have coming (for $200 each). For $200 would a 4th 6970 be worth the performance gain over three 6970's? or might i still be better off with 3 because of (im guessing) scaling


was trying to go with an all amd build since i already have 2 sandy bridge builds already (HTPC and my GF's build), but i managed to pick up a Gigabyte GA-990FXA-UD7 for $50 at microcenter (pricing error).

Hmm what would be a good 360 rad if i went that route and a good 480 rad?
If the setup is just for gaming, a 1200w is capable for the whole system. Each 6970 will approx draw 200w x 4 = 800w at stock clocks (no OC).

But why not 2 x 6990s with 2 waterblocks instead of 4.

The board has 4 PCIe x8/x8/x8/x8 with Quadfire setup should have no bandwidth issue.

If I were to do over the water cooling, this is the one. Less fittings, joints, adapters, etc. Less cost, big cooling capacity, put it outside PC case with more fresh air.

http://www.frozencpu.com/products/12...67&id=wyt54bCo



Edit:

Crossfire/Quadfire driver/scaling issue is a myth now.


...
Edited by Ken1649 - 11/2/11 at 4:58am
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