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Sapphire HD 7950 showing 1GB instead of 3GB?

By Blkfx1
Feb 13, 2013
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  1. Hey guys,
    I just recently noticed my graphic cards seem to running or at least reporting 1GB vram instead of 3GB. Do you think they are defective? Take a look at these results. It's showing a total of 2GB vram for my cards after running Firestrike.
    http://www.3dmark.com/fs/148413

    Also, CPU-z is reporting 1GB as well as other benchmarking applications.
    I attached a SS of my cpu report. Sorry about how crappy it is.

    Anyone know what this could mean? Is it a glitch?
     

    Attached Files:

    • SS.png
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  2. klepto12

    klepto12 TechSpot Paladin Posts: 1,364   +9

    Have you tried flipping the bios switch on your cards?
     
  3. Blkfx1

    Blkfx1 TS Addict Topic Starter Posts: 894   +173


    Yup, it was one of the first things I tried. I went ahead and benched each card separately using a different PCIE slot each time. During the single card tests, Unigine 4.0 / 3DMark 11 showed the correct values. However, when I checked CPU-Z is still showed the wrong amount of V-RAM. I've came to the conclusion that it is a crossfire glitch in 3DMark and a overall GPU glitch in CPU-Z. Maybe future CPU-Z updates will fix this issue.

    Also, just to note, I should have simply checked GPU-Z / CCC system info. Both show correct values with W/ and W/O crossfire enabled.
     
  4. slh28

    slh28 TechSpot Paladin Posts: 1,925   +170

    CPU-Z also shows 1GB for me...
     
  5. Blkfx1

    Blkfx1 TS Addict Topic Starter Posts: 894   +173

    Yeah, I think it's just a issue with the program. It did have me worried a bit though :x.
     
  6. JC713

    JC713 TS Evangelist Posts: 7,082   +920

    Sorry for getting off topic but your desktop is awesome. On topic: I asked my friend who had that card and he also reported 1GB. It is a glitch. They issue fixes often so it will hopefully be fixed soon.
     
  7. Blkfx1

    Blkfx1 TS Addict Topic Starter Posts: 894   +173

    Update: Yesterday, while I was updating a couple other programs. I went ahead and updated to the latest version of CPU-Z. To my surprise, it now shows the correct VRAM values for my cards. So, I guess it was just a glitch in the software after all. However, that still doesn't explain why recently released 3DMark shows 2GB for crossfire cards instead of 3GB.
     
  8. JC713

    JC713 TS Evangelist Posts: 7,082   +920

    I was wondering since I noticed there was .63 out, I was running .62
     
  9. Blkfx1

    Blkfx1 TS Addict Topic Starter Posts: 894   +173

    YUP! Now, hopefully with Beta 6 released for latest AMD drivers maybe I'll get the correct readings in 3DMark and 3DMark 11
     


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