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No improvement going from 4830 to 4870

So, I was running a Powercolor HD 4830 512mb card, getting around 25fps on most games on high settings 1680x1050.

I replaced the card with a Sapphire HD 4870 1gb card, and I'm not seeing any improvement on games, and sometimes worse results.

I've completely uninstalled the drivers, reinstalled them, and run CCleaner on the registry. Still nothing.

Here are the rest of my specs:
AMD Phenom X3 8650 triple-core @ 2.3ghz
8gb DDR2-800 ram
Windows 7 Ultimate 64-bit
Sapphire HD 4870 1gb

I guess the CPU could be the bottleneck, but I wouldn't think the 4870 would actually perform worse than the 4830. Oh, one other thing. I was playing Assassin's Creed, and Fraps was showing ~30fps and then jumped to ~100fps for about 10 mins... is my 4870 a dud?
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  1. Best answer
    Most likely a CPU neck.

    What power supply are you using?

    If you can, overclock the CPU to 3Ghz there or there abouts, That should help out alot.

    Best of luck.
  2. Thanks for the reply. I have overclocked to 2.5ghz so far. Not seeing much improvement yet, but I will see.

    My PSU is a Rosewill 550w
  3. Rustyy117 said:
    Most likely a CPU neck.

    What power supply are you using?

    If you can, overclock the CPU to 3Ghz there or there abouts, That should help out alot.

    Best of luck.


    +1 i think is a cpu bottle neck as well.

    The Phenom I's were not very powerful cpu.


    I agree you should try to get to 3 GHz and see if thats helps. (watch the cpu temps though)

    If it doesn't help then whats your motherboard? We maybe able to recommend a better cpu for you.
  4. Motherboard is an ASUS M3A78-EM

    I'm overclocked to 2.63ghz now, but still no improvement.

    Thanks for all the help!
  5. hmmm....do you still have the 4830?
  6. Yes, I still have it.
  7. ok well its alot of work, but what i would do is to run some benchmarks like Crysis, 3dmark06, Farcry2 ETC... note the results, then switch back to your 4830 and run the same benchmarks and note the results

    That way you can compare results and see whats orruring.
  8. I will do that. I've heard that the 10.1 catalyst drivers are performing poor also, so I'm going to try the 9.12 ones.
  9. Yeah apperently, but I havent had any trouble, infact today I got a new personal best 3dmark06 score with the 10.1 drivers.
  10. Yah the catalyst 10.1 driver is good..
  11. firestream said:
    Motherboard is an ASUS M3A78-EM

    I'm overclocked to 2.63ghz now, but still no improvement.

    Thanks for all the help!



    Well good news is that as long as you update your bios to the latest, you can get any of the newest AM3 cpu (phenom II's and Athlon II's).

    http://asus.com/product.aspx?P_ID=KjpYqzmAd9vsTM2D (providing i have the correct MB)


    now i would do what omgitzfatal is saying first before throwing money at the problem.

    Question, can you give us your HDD brand, model number, and (if possible) how old is it? this may not be causing the problem, but a slow and old HDD could be causing the slow down.
  12. OK, Here's an update:

    9.12 drivers were worse.

    HD4870:
    Assassins Creed max settings 1680x1050 -> ~25fps
    3dMark Vantage - the space graphics test 1680x1050 -> ~10fps

    HD4830:
    Assassins Creed max settings 1680x1050 -> ~25fps
    3dMark Vantage - the space graphics test 1680x1050 -> ~10fps

    Nearly identical performance.

    I'll post HDD and another Vantage score in a while.
  13. 3dmark vantage results? (not just FPS in one test)

    Should give you a score at the end E.G P14329 Points

    Its hard to say its your CPU bottlenecking when you FPS are so low.... Confusing.
  14. I had a HD4890 before now that underperformed, i was getting 15K in 3dmark06....Put an old 8800GT and got 500points more...

    Couldnt figure out what the problem was for the life of me, XFX tryed to blame the problem on everything but the 4890 :/


    If you could, try the 4870 in someone else's computer...that way you can find out if its a problem with your card or not.
  15. Whilst the cpu is not the fastest there is nothing wrong with phenom's, don't know where that comes from.

    Whilst not always indicative of potential performance I still like testing cpu's by reducing the graphical load.

    OP: what fps do you get at something like 10 x 7 resolution or your native res and low settings?
  16. Here are the results of 3dMark Vantage for the 4870 and 4830. The 4870 certainly scored higher on the graphics part of it by 3000 points. I'm just not seeing that in games... Notice that I overclocked the processor a little more between the 2 tests (which I really didn't intend to do)

  17. Try a clean sweep of drivers & the latest for the mobo, CPU, GPU. Update mobo BIOS too.
    After that you can try a clean reinstall of the OS.
  18. If you've ever had an Nvidia card, download driver sweeper and clean old drivers from your registry.
  19. Best answer selected by firestream.
  20. Rustyy117 said:
    Most likely a CPU neck.

    What power supply are you using?

    If you can, overclock the CPU to 3Ghz there or there abouts, That should help out alot.

    Best of luck.


    I agree on the CPU bottleneck. Upgraded to a Phenom II X4 940 and am seeing frame-rates in the 50-60 range now in Assassin's Creed, whereas before it was 25-30fps range.
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