hd 7950

Discussion in 'Videocards - AMD Radeon Drivers Section' started by rafaapm, Jun 24, 2015.

  1. rafaapm

    rafaapm Member

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    GPU:
    HD 7950
    Hello, I have a sapphire 7950 that I bought used from a friend of mine..

    The weird is that stock voltage is 1.025.. Is this normal?

    Another question.. Can I use a r9 280 bios? Will I have performance increase?

    Many thanks to you all :)
     
  2. PrMinisterGR

    PrMinisterGR Ancient Guru

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    GPU:
    Inno3D RTX 3090
    Use GPU-Z to export your bios and send it to me. Also check if your card has a bios switch.
     
  3. CalculuS

    CalculuS Ancient Guru

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    GPU:
    GTX 1660Ti
    I remember different cards have different voltages, some guy on overclockers.net found a correlation between stock voltage and ASIC quality.

    Some cards had 1.025, 1.100, 1.150 and lastly 1.2 and 1.25.
     
  4. PrMinisterGR

    PrMinisterGR Ancient Guru

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    GPU:
    Inno3D RTX 3090
    He can check the ASIC quality using GPU-Z. You just click on the top left icon on the GPU-Z window, and there is the "Read GPU ASIC Quality..." button.

    Observe my famous luck below :D

    [​IMG]
     

  5. CalculuS

    CalculuS Ancient Guru

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    GPU:
    GTX 1660Ti
    I had 61,5% and **** it was a terrible card. Got 1100/1250 only stable @ 1.25V.
     
  6. PrMinisterGR

    PrMinisterGR Ancient Guru

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    GPU:
    Inno3D RTX 3090
    Mine is 1150/1550 completely stable @ 1.268. The temps are ok too. Maybe it doesn't matter that much in the end.
     
  7. rafaapm

    rafaapm Member

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    GPU:
    HD 7950
    Mine is 77.2 % Asic and cant find a bios switch in the card :s

    zippyshare.com/v/yL4F9IQS/file.html my bios...
     
  8. lexer98

    lexer98 Master Guru

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    GPU:
    GTX 1070 - WC
    I don't recommend you messing around with the BIOS, use MSI AB to overclock your GPU.

    OFF: My shappire have a crappy ASIC too 59.1% ... i never tried 1150, but 1050 is stable with the stock voltage and power limit
     
  9. rafaapm

    rafaapm Member

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    GPU:
    HD 7950
    I wounder if I can flash it with a 280 bios and if that will boost the performance

    this card is 900/1250
     
  10. theoneofgod

    theoneofgod Ancient Guru

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    GPU:
    RX 580 8GB
    Stock here is 1188mv
     

  11. lexer98

    lexer98 Master Guru

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    GPU:
    GTX 1070 - WC
    Naa don't do that, overclock the card with MSI afterburner or edit your original bios with VBE7 if you want a permanent O.C
     
    Last edited: Jun 24, 2015
  12. Alessio1989

    Alessio1989 Ancient Guru

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    GPU:
    .
    never seen this tool before D:

    mine: 81.3% on a cheap sapphire R9 280 dual-x

    EDIT: how is this number computed?
     
    Last edited: Jun 24, 2015
  13. rafaapm

    rafaapm Member

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    GPU:
    HD 7950
    so what you think is the oc I can get?

    with vbe7 the bios rom shows tdp 130w-191w.. I guess this is pretty low right?
     
  14. lexer98

    lexer98 Master Guru

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    GPU:
    GTX 1070 - WC
    First you need to find a stable O.C settings with MSI AB and then edit your BIOS. 1050-1100mhz is the sweet spot in my opinion for the GPU, memory i don't know ... but arround 1300mhz
     
    Last edited: Jun 24, 2015
  15. rafaapm

    rafaapm Member

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    GPU:
    HD 7950
    is that without increase voltage and powerplay 20? thanks
     

  16. lexer98

    lexer98 Master Guru

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    GPU:
    GTX 1070 - WC
    I'm pretty sure that your GPU can overclock to +/- 1000mhz with stock voltage and the power play at 20%.
     
  17. rafaapm

    rafaapm Member

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    GPU:
    HD 7950
    ok thanks will try it on..

    what are the best drivers for me? modded or not.. I need opencl and play videos well, I see people complaying about that :/

    Many thanks
     
    Last edited: Jun 24, 2015
  18. Demrock

    Demrock Member

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    GPU:
    Sapphire Boost 7950x2
    Been using the 7950 for a long time now and its a great card.

    With the modified june 8 drivers of Asder i have the best results in gaming and benchmark scores.

    my highest o.c. was 1200/1550 on a 52% ASIC with trix set to 1.3 volt

    Heaven benchmark score was 1005 on 1080p highest settings on a single sapphire 7950 boost.

    In The Witcher 3 with advanced settings off except sun flare effect and normal settings on ultra except vieuw distance to high / medium / hairworks off shadows medium i have a solid 60 fps !!!!!!

    This is with an o.c. of 1100 / 1450 1.25 volt gaming profile, now i can get volt lower but temps are fine.

    I am using Windows 10 pro build 10130 btw !
    with an intel 2500k o.c. to 48oomhz on air with 8 gb corsair vengeance at 1600mhz.

    Hope this helped abit sir :)
     
    Last edited: Jun 27, 2015
  19. PieEyedPiper

    PieEyedPiper Master Guru

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    GPU:
    RX 580
    Asic 58.9%

    Ditto.

    Also, very jelly of all you guys with 60% asic and up!
    Stuck at 1050 core for stability, no amount of voltage helps. What is wild is how much even just 50MHz means on this arch. Love it! (not my asic score though)

    EDIT: whoa! Demrock 52%! Yet faar better oc results. Not too sure I've won the OC lottery in a long while now.
     
    Last edited: Jun 27, 2015
  20. theoneofgod

    theoneofgod Ancient Guru

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    GPU:
    RX 580 8GB
    My top GPU is 68% but the bottom one is somewhat higher so clocks don't match up great. I usually don't crossfire so it's not a problem.
    I run 1150/1600 right now. 1175 causes rainbow artifacts :)
     

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