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Sapphire HD7950 Dual X OC 950mhz Edition

Discussion in 'AMD / ATI' started by SonDa5, May 29, 2012.

  1. SonDa5

    SonDa5

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    For me it made computer building much more funner and I already enjoyed it.
     
  2. SonDa5

    SonDa5

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    Another photo of the Watercool HEATKILLER® GPU-X³ 79X0 Ni-Bl on my Sapphire HD 7950 950mhz edition.

    [​IMG]
     
    grunt_408, Jetster and cadaveca say thanks.
  3. Frogger

    Frogger

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  4. SonDa5

    SonDa5

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    Thanks for pointing that out.

    I have been following experimental HD7950 to HD7970 flashing since June and so far nobody has been able to unlock shaders except for the A7950 Fire Radeon card from China which will flash to HD7970.


    I will keep an eye on Kets work and hopefully the Radeon Gods will see our desires in doing this flash and help us out with a proper BIOS or BIOS tool that can do the job right.
     
  5. SonDa5

    SonDa5

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    My gpu temps with the Heatkiller block...

    Ambient temps 27C.

    Furmark 15 minute 1920x1050 Burn in Benchmark.

    [​IMG]

    The VRM temps are still hotter than I was hoping for but the card is over clocked like a beast and over all the VRM temps are decent for this over clock with water.

    This water block looks great and performs great.


    Sidewinder computers has the best deal on it.
     
  6. james888

    james888

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    1300mhz... 46c max... two terms that I would initially think not go together
     
    Crunching for Team TPU
  7. SonDa5

    SonDa5

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    :toast::toast:

    This is the best video card I have ever had.
     
  8. james888

    james888

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    I don't seem to have the luck when it comes to hardware. My 2500k is the 50% that doesn't overclock great. I had one 6950 die on me. I think my 7970 just died. Just congrats on that card.
     
    Crunching for Team TPU
  9. SonDa5

    SonDa5

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    :( Sorry to hear about the dead card.


    I have had problems with computer stuff as well but I have had alot of luck lately with decent hardware. Good luck getting your video card problem fixed.
     
  10. SonDa5

    SonDa5

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    Doing some tweaks to my HEATKILLER® GPU-X³ 79X0 Ni-Bl water block.

    1. Replaced stock thermal pads with fujipoly extreme thermal pads on RAM and VRMs.
    2. Switching from IC Diamond 24 to Coollaboratory Liquid Pro.

    Will be a few more days till I get my loop to share temps.

    Here are photos of what I have done so far.

    Drop of Liquid Pro that covered both the DIE and surface of block. Fujipoly extreme on memory is .5mm thick.

    [​IMG]


    Coollaboratory Liquid Pro on Sapphire HD7950 950mhz edition DIE.

    [​IMG]


    Coollaboratory Liquid Pro on HEATKILLER® GPU-X³ 79X0 Nickel Plated die contact area.


    [​IMG]


    Fujipoly Extreme on VRM #1 1mm thickness on VRMS

    [​IMG]

    VRM#2 1mm thickness.

    [​IMG]
     
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  11. james888

    james888

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    OOH cool liquid pro. Don't you have to sand that stuff off if you wanted it off
     
    Crunching for Team TPU
  12. SonDa5

    SonDa5

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  13. james888

    james888

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    If I had a watercooling system like that, and was overclocking like you, I think I might try some of that stuff also. Can't wait to see the temps.
     
    Crunching for Team TPU
  14. Frogger

    Frogger

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    +1 on that
     
  15. SonDa5

    SonDa5

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    Finally got my loop together and Fujipoly Xtreme thermal tape .5mm on RAM and 1mm on VRMS.

    Before....

    IC Diamond on HD7950 die with stock Thermal Tape that comes with Heatkiller nickelplate block.



    After

    Liquid Pro on Die
    With the Fujipoly Extreme Thermal Tape

    16.5C Ambient Temps

    Furmark 15 minute 1920x1050 Burn in Benchmark


    [​IMG]


    Ambient temps were much cooler but the Delta looks better.
    Also important to note that I am now running my water line to the CPU first then to the GPU. Before I was running directly to the GPU first then the CPU.

    Looks like a success. :toast:
     
    Last edited: Nov 11, 2012
    Frogger says thanks.
  16. Frogger

    Frogger

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    :toast: -11c gpu :eek: & the vrm's almost -20 :wtf: GREAT RESULTS
     
  17. eidairaman1

    eidairaman1

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    sounds like that PSU if you ask me
     
  18. james888

    james888

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    It is not. I am pretty sure I know why the 6950 died. The 7970 died, coincidentally, right after I moved so I think it got a little shaken. You posted and helped in both threads for those two cards in some way too.

    Those are some EPIC temps with that EPIC overclock. Like a side of ice with that? What is in your loop?
     
    Crunching for Team TPU
  19. SonDa5

    SonDa5

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    Thanks. I managed to get in a few games of UT3 today and it was awesome. I'm gaming with 3570k at 5GHz, ram at 2400mhz and HD7950 at 1250/1700. :rockout:

    My loop consist of the following.

    1. Swiftech MCP655-B Pump with a Alphacool acrylic top

    2. OCCOOL NexXxos UT-60 420mm with3x Bgears 140mm 1800RPM fans in pull
    3. Heatkiller nick plated full cover block on HD7950
    4. CPU has DT Sniper Water Block
    5. 7/16" Tygon clear tubing r-3603
    6. 1/2" fat boy barbs
    7. EK-Multioption RES X2 - 150 Advanced reservoir
    8. Distilled water with a Monsoon silver bullet in reservoir and PT Nuke.
    9. All Thermal pads on mother board and video card have been replaced with Fujipoly xtreme thermal pads. Liquid Pro on GPU die and CPU die. Thermal right chipset heat sink on SB with IC Diamond TIM.
     
    Last edited: Nov 12, 2012
  20. eidairaman1

    eidairaman1

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    I don't recall the topics u mention. It does come with experience. n Ya this is the average oc of the chip I have. just like users of the 2nd n 3rd gen core i7 /i5 reaching 4.5 ghz
     
  21. SonDa5

    SonDa5

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  22. SonDa5

    SonDa5

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    Card is still cooling well.

    Ran the test at 1300/1600
    Feels about 60F. :D

    [​IMG]
     
  23. HammerON

    HammerON The Watchful Moderator Staff Member

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    Thanks for the measurements (thickness) of the pads you used:toast::toast::toast:
    Very nice temps:)
     
    Crunching for Team TPU
  24. rhuaidhri New Member

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    Looking for some advice. I can buy this card secondhand at a slight 15% discount. Not too bad since it's only 5 months old.

    However the newer Vaporx 7950 from Sapphire apparently has an identical pcb to the 7970 Vaporx version and it costs basically no more than this card new.

    Now I know this card is missing one vrm compared to the 7970 version does anyone know if the same number of vrm's are used on the VaporX 7970 and 7950 as this card? The reason I think they may is because the Vaporx cards are shipped with 8pin and 6pin connectors too not two 8pins.

    If any non chinese 7950 can be unlocked then it would ahve to have the same pcb as some version of the 7970 so maybe it would be a better idea to spend the extra 15% and buy a new Vaporx, apparently the cooling solution is slighly better than this version although it's vrm heatsink is applied with 2mm pads due to the HS being interfered with by the resistors near the vrms.
     
  25. antlerandadder New Member

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    I'm not sure I have a good grasp on the dimensions here... would something like this work?

    This on VRM#1:
    http://www.performance-pcs.com/catalog/index.php?main_page=product_info&products_id=36179

    This on VRM#2:
    http://www.performance-pcs.com/catalog/index.php?main_page=product_info&products_id=36178

    all connected to this:
    http://www.performance-pcs.com/catalog/index.php?main_page=product_info&products_id=36176

    Please let me know! Thanks.
     

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