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Nickel Plated Heatkiller GPU-X³ 79X0 vs. XSPC Razor HD 7970 Full Coverage VGA Block - New Design

Poll Results: Which will cool the best?

 
  • 65% (29)
    Nickel Plated Heatkiller GPU-X³ 79X0
  • 11% (5)
    XSPC Razor HD 7970 Full Coverage VGA Block - New Design
  • 15% (7)
    Heatkiller is the sexy!
  • 6% (3)
    XSPC RAZER HD 7970 is LED PLEXI SEXY!
44 Total Votes  
post #1 of 64
Thread Starter 
I am going to test both of these blocks with the same video card in the same RIG with the same system settings.



Right off the bat I will tell you all that the Heatkiller GPU-X³ 79X0 is a work of art as far as build quality goes. Everything about its appearance is pleasant on the eyes and to the touch it feels solid and well made.

Photos of the Heatkiller GPU-X³ 79X0












The XSPC HD 7970 Full coverage Block on the other end of the spectrum wreaks of poor craftsmanship in its finish and construction yet has some bright ideas such as the versatile multi tube connection ports.

My particular XSPC HD7970 New Edition Full coverage block came from the factory with some obvious imperfections on the finish.


Photos of XSPC RAZER HD7970 New Edition Block

In these photos you can see circular mill imprints on the contact surface areas of the block and some minor copper burs that should have been removed at the factory. Look at the crappy thread job on the connectors. This block should have never left the factory like this.




Look at the little metal burs hanging off of the ram contact areas. These little pieces of metal can fall off and possibly create a ground fault on the PCB.





The connection threads were terribly done. Look at the threads coming apart. Should have been cleaned up. This crap can clog a pump or radiator and hurt flow.




Blue Circle Area show copper shavings left inside from mill work. XSPC did a terrible job on this particular block and when I tried to RMA they denied RMA service. Be warned... Also Pefromance PC also denied customer support for all problems found with block.





The TESTs

For my tests I will be running Furmark for 15 minutes with my Sapphire HD7950 950mhz Edition set to 1300/1700.
I will use the latest version of HWinfo64 to record GPU/VRM temps.



The XSPC RAZER HD7970 New Edition block uses aluminum passive blocks on the VRMS while the Heatkiller GPU-X³ 79X0 uses active water flow over VRM to cool them down. I anticipate the Heatkiller to win on the VRM cooling.

The XSPC Razer HD7970 New Edition has 0.5mm fins for high performance which should work out better than the original XSPC RAZER HD7970 which fin spacing was at 1mm. This is basicly double the fins in the same area.



TIM

To make this test as fair as possible I will also use Cool Laboratory Liquid Pro TIM on the DIE and Fujipoly Xtreme thermal pad on memory and VRMS on both blocks.



Imperfections on my RAZER block


I contacted XSPC and shared these photos of my block and they have assured me that my block will perform fine with the mill marks and the copper burs on the block so I am going to do this test and hopefully my awesome HD7950 doesn't over heat or short out.

To avoid a terrible short out problem I am going to trim off the copper burs despite XSPC telling me the finish is fine because I don't want a small copper bur to fall off on the HD7950 or mother board PCB and short something out.






Final Results of my Tests below!

Edited by SonDa5 - 6/2/13 at 11:41am
B.K.T.
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B.K.T.
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post #2 of 64
Heatkiller for sure
post #3 of 64
Thread Starter 
Final RESULT HERE!!!!

Sapphire HD7950 950mhz Editon 1300/1700 1.22 on gpu memory at 1.6v


Results for the Nickel Plated Heatkiller GPU-X³ 79X0.




Ambient temps 21C

Furmark 16 minutes

GPU Idle 26C MAX 41C
VRM 1 Idle 24C MAX 62C
VRM 2 Idle 25C MAX 46C





Results for the XSPC RAZER HD7970 New Edition Block.




Ambient temps 21C

Furmark 16 minutes

GPU Idle 26C MAX 40C
VRM 1 Idle 25C MAX 115C
VRM 2 Idle 26C MAX 68C








Analysis and conclusion.


The heat killer wins because it does a much better job at cooling the VRMS. GPU temp wise the XSPC beat the heat killer by 1C. The high average temps of the XSPC VRM temps was so much higher that I had to give the win to the Heat killer. I think the XSPC would cool off VRMs better if the plexi glass wasn't right on top of it. I think the plexi glass is acting like a blanket and keeping case air flow away from the vrm blocks. XSPC vrm blocks don't have any liquid cooling directly within the design while the heatkiller does. Also the XSPC vRM heat sinks are made of aluminum and the Heatkiller VRM block area is made of copper. XSPC aluminum VRM block parts would also benefit from some fins on top of it so that the air flow in a case could help with cooling as well.

If you look at my Furmark heat graph for the XSPC RAZER HD7970 New Edition block you will see that that it has a bunch of little M's. This happened because at 115C on the VRM the card would drop load to 64% real fast to let the VRM cool down and then it would shoot back to 100% load.

One thing that I noticed about the XSPC block is that I think it flows better since it doesn't have to go through any tight VRM channels like the heat killer does. I can visually see alot more water movement in my reservoir with the XSPC block and this indicates better flow IMO.


On a side note I think my Sapphire HD7950 950mhz Edition is voltage locked because I learned that I couldn't increase voltage higher than 1.156v under load regardless of how high of voltage I adjusted. This is good news to me because if I can figure out how to increase voltage I should be able to push the card alot faster. As it stands I have over clocked with card as fast as 1370/1800 with 1.156v under load. Really golden card.



In case you are wondering why I bought the XSPC and kept it. I bought the XSPC block to eventually modify it to work on a Sapphire VApor X HD7950 which has a custom PCB. Now I know the XSPC RAZER HD7970 New Edition block has good gpu cooling ability and I will work on modifying and improving the VRM cooling for the Vapor X HD7950 card.



I'd like to thank XSPC for helping me trouble shoot some problems I had with the block and for helping me get the card mounted properly by good customer service. I'd also like everyone to know that I asked for an RMA on the block bases on problems that I have shown in this thread and they would not do it.


I'd also like everyone to know that Performance PCS told me they would help me with the problems I had with the block and then abandoned me and a rep here at OCN told me he could not help me. Not happy at all with the customer service from Performance PCS with the problem I had.


The End of this test.

When I have some time I will update this thread with some photos of the internal design of the XSPC HD7970 RAZER new edition block.
Edited by SonDa5 - 7/9/13 at 6:27pm
B.K.T.
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B.K.T.
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post #4 of 64
Just bought the heatkiller last week and ill have to say its a masterpiece. This just proves it performs as good as it looks.
One question How good are the thermal pads that come with the heatkiller?
post #5 of 64
Thread Starter 
Quote:
Originally Posted by blkmax21 View Post

Just bought the heatkiller last week and ill have to say its a masterpiece. This just proves it performs as good as it looks.
One question How good are the thermal pads that come with the heatkiller?


They worked decent but I got the fujipoly extreme thermal pads and they work better.
B.K.T.
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B.K.T.
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post #6 of 64
waiting for the razor test, i got one for my 680 and i can't say im too pleased, xspc has been no help with me and my problem, hopefully i'll be able to get a replacement, looking into the heatkiller 680 atm as well.
    
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post #7 of 64
I got the Heatkiller a week or two ago and that thing is amazing.
Quote:
Originally Posted by SonDa5 View Post

They worked decent but I got the fujipoly extreme thermal pads and they work better.

What thickness pad did you use?
Ananke
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post #8 of 64
Thread Starter 
Quote:
Originally Posted by DarkrReign2049 View Post

I got the Heatkiller a week or two ago and that thing is amazing.
What thickness pad did you use?

.5 mm on the memory and 1mm on vrms.
B.K.T.
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B.K.T.
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post #9 of 64
Thanks, just ordered some.
Ananke
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post #10 of 64
Thanks for the update biggrin.gif
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