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Corsair 900D build with a HD 7990 Watercooled and 3 radiators! - Page 4

post #31 of 94

Do either of those 7950's use 7970 blocks?

post #32 of 94
Thread Starter 
Quote:
Originally Posted by WebsterXC View Post

Do either of those 7950's use 7970 blocks?
The blocks I bought, the FC7950s are specific to the 7950s. I know there are blocks that work for both 50s and 70s. I do not believe these are it, but you could know more than me.
post #33 of 94
Thread Starter 
Ok. So I got the waterblock for the 7990 in and installed it last night along with the Alphacool 60mm UT60 140mm radiator. The 480mm radiator at the bottom is a low density radiator, with only 11fpi. Apparently, this is not enough to cool the monster 7990. Under stress testing, with both the CPU and the GPU maxxed out at 100% load, the temps slowly climbed to 90c. At that point, I killed the stress tests. I will try and add 3 more fans to the 480 to make a push/pull (cannot add 4 due to the front of the case getting in the way). I will also order another 140mm fan to make the 140 rad a push/pull as well. Due to size, i mounted the fan on the outside. Here is a picture of the build as it stands: will update tonight.

post #34 of 94
Thread Starter 
I will likely end up trying the fans tonight. if no success, then I will purchase another radiator. I am looking at either a triple on the top, or a double in the front. I would like the front more as I could draw in more cool air, as opposed to the top where I would just be exhausting warm air. The front I could get a thick monsta, but the top I would have to get a standard. Thoughts?
post #35 of 94
Quote:
Originally Posted by Close2Death View Post


The blocks I bought, the FC7950s are specific to the 7950s. I know there are blocks that work for both 50s and 70s. I do not believe these are it, but you could know more than me.

 

Incorrect.

 

Some 7950's use a 7970 PCB, therefore allowing 7970 blocks to be fit, but NOT 7950 blocks. Most 7950's use a 7950 PCB (7950 waterblock and NOT a 7970 waterblock). There is not a block that fits both.

 

It's confusing at the least, I used Cooling Configurator to work this out. Two of my three video cards are 7950's with 7970 PCB's.

 

As for your 7990 temps, you simply do not have enough radiator volume to cool that mega card. I used to own a 6990, and would hit 65C with both a GTX360 and GTX240 radiator in the loop.

post #36 of 94
Thread Starter 
Quote:
Originally Posted by WebsterXC View Post

Incorrect.

Some 7950's use a 7970 PCB, therefore allowing 7970 blocks to be fit, but NOT 7950 blocks. Most 7950's use a 7950 PCB (7950 waterblock and NOT a 7970 waterblock). There is not a block that fits both.

It's confusing at the least, I used Cooling Configurator to work this out. Two of my three video cards are 7950's with 7970 PCB's.

As for your 7990 temps, you simply do not have enough radiator volume to cool that mega card. I used to own a 6990, and would hit 65C with both a GTX360 and GTX240 radiator in the loop.

Bah. Well first, thanks for the clarification on the blocks for the 50s and 70s. It is, indeed, confusing.

Disappointing that 600mm of 60mm thick radiators aren't enough to cool a GPU and a CPU. Indeed, I understand the heat it puts out, but I assumed (I know, my bad), that it would be sufficient. I am now looking at either a triple 120 or 140mm for the top, and/or a double 120mm for the front. I will have to see what I have room for.

Any recommendations for double 120mm rads or triple 120/140mm rads? I am not overly concerned with price, or noise for that matter, but performance is the main goal. I don't think I can fit a Monsta up top, as the thickness with a set of fans is too much, but aside from that, a 60mm should be feasible.
post #37 of 94
Subbed. BTW you could even crossfire your 7950s with your 7990 for triple or quad crossfire...
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Red Rover
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CPUMotherboardGraphicsRAM
intel i5 2550K Asus Maximus V Gene XFX 6950 reference Avexir CORE series red LED 16 GB 
Hard DriveHard DriveOptical DriveOS
Mushkin Enhanced Chronos 120 GB SSD WD Blue 2.5" ASUS DVD-RW Win7 Ultimate 
MonitorMonitorKeyboardPower
Acer 23' LED LCD 5ms monitor Acer 23' LED LCD 5ms monitor Cooler Master Storm Trigger XFX 750w  
CaseMouseMouse PadAudio
NZXT Phantom Full Tower in White/Red Logitech G600 generic red/white/black mouse pad Sony 520w stereo 
OtherOtherOtherOther
Bitfenix single-sleeved cable extensions Red Swiftech MCR420-QP Swiftech MCR420-QP Swiftech Apogee Drive II 
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Swiftech Maelsrtom EK FC6970 waterblock NZXT FS200 (x5) NZXT FX120 (x1) 
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XSPC Xinrulian 120mm (x8) 
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post #38 of 94
Thread Starter 
Quote:
Originally Posted by Phelan View Post

Subbed. BTW you could even crossfire your 7950s with your 7990 for triple or quad crossfire...

But if I Crossfire the 7950 with the 7990, wouldn't the 2 GPUs on the 7950 run at the same speed as the 7950?
post #39 of 94
Quote:
Originally Posted by Close2Death View Post


But if I Crossfire the 7950 with the 7990, wouldn't the 2 GPUs on the 7950 run at the same speed as the 7950?


Yes, if you add the 7950 to them it will make the 7970's into 7950's.

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My chiller build
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CPUMotherboardGraphicsHard Drive
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post #40 of 94
Thread Starter 
Quote:
Originally Posted by BackwoodsNC View Post


Yes, if you add the 7950 to them it will make the 7970's into 7950's.
Thought so. Forget that.

"Negative Ghost Rider, the pattern is full."
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