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XFX R7950 Black Edition DD New Revision(K.0) - is there any full cover water block compatible with it?

post #1 of 27
Thread Starter 
Hi everybody,

I participated in some sort of competition and won this FX-795A-TDBC card. Looked around on the Internet and found no place ever mention this same model have a different revision and thus a different PCB design. It have two DVI ports, and it is black edition and double dissipation.

When I use this for BTC mining it gets quite hot(73 degC at 100% fan). I always turn the fan up to 100%, and it becomes really loud. So I contacted XFX and they say I can take the heatsink off. I looked up for my model on CoolingConfigurator.com and found that they have a wrong picture. I submitted mine. The pic got updated quickly. But still no full cover waterblock. I checked my board's picture against the reference board and think that the only two incompatibility are :
1. On the ref board, some VRM chips are between two R22 components(I think chokes). To cool them, EK had a small notch at the bottom of their FC7950 block to insert in between the chokes. However, the XFX board have a choke at that position so it blocks the notch.
2. There is a choke and a capacitor behind the dual DVI ports that are present at a different position OR not present on the ref board, so it might not fit with the water block.

Other than that, the PCB really look like a reference board.

So to use that advantage of similarity to ref board, is there any waterblocks that is compatible with this, or do I have to bear with the noise and heat coming out from it?

Thank you.

http://www.coolingconfigurator.com/step1_complist?gpu_gpus=945 photo of PCB from me.
post #2 of 27
Hi man, I feel for you. I think XFX have been messing up a lot with their PCB design and referencing. I just purchased a XFX 795A-TNFC with a single fan heatsink. I had checked compatibility with waterblocks and found plenty of options. However when both the card and waterblock arrived, they did not match. I then found your post and realized that your card's PCB and mine are the same even if they have different model names and I/O shields.

There is no compatible waterblock that I could find, and EK does not look like they are planning on launching one.
I hope I can return the card to XFX in exchange of a more common one, compatible with existing waterblocks.

At this point I just regret not going for a 7970, there designs are so much more straightforward to identify.

Cheers man.
post #3 of 27
Pics.
post #4 of 27
How are you getting temps of 73C with the fan at 100% and what clocks are you running at? My 7950 DD (not black edition and only has 1 DVI) only hits 70 if I OC the core to 1100 (which requires a voltage of 1.23V). If I put the core clock at 1000 Mhz, my temps rarely got above 68. Both of these temps are with UNDER 60% fan; I have never had to turn it up to 100%. If I do, the temps go way down. Does your case have poor cooling?
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Hexa Core
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post #5 of 27
Thread Starter 
Quote:
Originally Posted by akangatta View Post

Pics.
Pics are in the link
post #6 of 27
Thread Starter 
Quote:
Originally Posted by akangatta View Post

Hi man, I feel for you. I think XFX have been messing up a lot with their PCB design and referencing. I just purchased a XFX 795A-TNFC with a single fan heatsink. I had checked compatibility with waterblocks and found plenty of options. However when both the card and waterblock arrived, they did not match. I then found your post and realized that your card's PCB and mine are the same even if they have different model names and I/O shields.

There is no compatible waterblock that I could find, and EK does not look like they are planning on launching one.
I hope I can return the card to XFX in exchange of a more common one, compatible with existing waterblocks.

At this point I just regret not going for a 7970, there designs are so much more straightforward to identify.

Cheers man.
smile.gif thanks
post #7 of 27
Thread Starter 
Quote:
Originally Posted by Mjolnir125 View Post

How are you getting temps of 73C with the fan at 100% and what clocks are you running at? My 7950 DD (not black edition and only has 1 DVI) only hits 70 if I OC the core to 1100 (which requires a voltage of 1.23V). If I put the core clock at 1000 Mhz, my temps rarely got above 68. Both of these temps are with UNDER 60% fan; I have never had to turn it up to 100%. If I do, the temps go way down. Does your case have poor cooling?

okay I'm doing bitcoin mining, so it's like running at full load. If I ever overclock it to 1100MHz, the driver will crash and restore for 2 times instantaneously.For stable mining throughout the course, I only overclocked it to 960 MHz.

Opening the case helps quite a bit, Lowers the temperature by 4°C :/ So it is 69°C when the case is open. However, as a result of opening the case, the noise level becomes even higher, as there is no side panel to stop the noise from coming out.

Also the cooler is bent on the edge. I contacted XFX regarding this but they denied this as a factory fault. I'm requesting them to send me a replacement cooler now.

I bought the case at a local store. CMstorm Scout II. It looks nice, but I didn't read reviews at the first hand, so I bought this straight. And now I'm seeing more and more of it's cons. Overall experience is okay anyway.
Edited by dennis97519 - 5/11/13 at 1:32am
post #8 of 27
Thread Starter 
Quote:
Originally Posted by akangatta View Post

Hi man, I feel for you. I think XFX have been messing up a lot with their PCB design and referencing. I just purchased a XFX 795A-TNFC with a single fan heatsink. I had checked compatibility with waterblocks and found plenty of options. However when both the card and waterblock arrived, they did not match. I then found your post and realized that your card's PCB and mine are the same even if they have different model names and I/O shields.

There is no compatible waterblock that I could find, and EK does not look like they are planning on launching one.
I hope I can return the card to XFX in exchange of a more common one, compatible with existing waterblocks.

At this point I just regret not going for a 7970, there designs are so much more straightforward to identify.

Cheers man.

Can you post your pcb picture here so I can compare? That model is supposed to have ref board I think, since it only have one DVI port.

Maybe you can use dremel or black n decker to cut off the notch meant for cooling the VRM between the two chokes.
Edited by dennis97519 - 5/11/13 at 1:41am
post #9 of 27
http://www.swiftech.com/KOMODO-HD7900.aspx#tab3

Hey buddy,

Although a little pricier, the Komodo seems to he the only one that will accommodate the TDBC PCB layout.

I meant to post a pic of my PCB, but my android phone browser did not let me do it. However, as surprising as it may sound, I confirm that it is 100% the same layout. The only difference being the extra DVI on yours.

I will post pictures in a couple of hours so that you see by yourself.
post #10 of 27
Your case looks like it has space for two side fans to be installed, do you have any there? I have a 120 mm side fan blowing more or less right over my GPU.

If I set my fan to 100% and run a GPU stress test for 100% load, I don't get temps above 70, even with 1100 core and 1575 memory.
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Hexa Core
(23 items)
 
  
CPUMotherboardGraphicsRAM
5820K @ 4.5 ghz GA-X99P-SLI Msi GTX 1070 Gaming 8g Corsair quad channel 16 gb ddr4 2666 MHz 
Hard DriveHard DriveHard DriveHard Drive
OCZ Vertex 4 256 GB Samsung Spinpoint F3 1 TB OCZ trion 150 480 gb HGST 3 TB 7200 rpm 
Optical DriveCoolingOSMonitor
Some random ASUS lightscribe DVD burner Corsair H105 + 2 2150 RPM Gentle Typhoon fans Windows 7 professional 64 bit xb271hu 
MonitorMonitorKeyboardPower
Dell u2713HM Dell 2001FP Ducky Zero Shine DK2108s Seasonic X750 fully modular PSU 
CaseMouseMouse PadAudio
Fractal Design R5 Logitech G700s Steelseries qck+ Sennheiser HD600  
AudioAudioAudio
Beyerdynamic DT250 250 ohm Mayflower Electronics O2 Headphone Amp + ODAC Monoprice 5 inch studio monitors 
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