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Radeon 6870 severely underperforming

post #1 of 3
Thread Starter 
Hello,
A few months ago re-installed my OS to win7 pro 64-bit. Since then I have since noticed a severe decrease in video performance.
Recently I re-installed the latest AMD drivers to see if it would help but the situation remains much the same, only slightly better.
Playing multiple videos at once, or just having them opened causes great stress on my system, leading to lots of stuttering.
Gaming performance is horrid, I have only tried Diablo3 and the framerate with even only 1 player is almost unbearable.
The performance feels similair to that of my laptop which has a integrated graphics card.
Before switching to a 64bit OS I was able to play most recent games at high settings and high resolutions, no hardware changes have been made since.
I am running dual monitors.

Windows Experience Index:
http://imgur.com/huoO0yj

The rest of my pc:
Radeon HD 6870 1024 MB GDDR5 900MHz clock, 1050Mhz Memory Clock
i5-2500K
4GB RAM
corsair 620w

Thank-you for the help.
My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
e6400 evga 780i evga 8800gt x2 2gb crucial ballistix pc2 6400 
Hard DriveOSMonitorKeyboard
wd aaks 320gb vista ultimate 64bit samsung 226BW dell 
PowerCaseMouseMouse Pad
corsair 620HX antec p182 g5 Qck 
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My System
(13 items)
 
  
CPUMotherboardGraphicsRAM
e6400 evga 780i evga 8800gt x2 2gb crucial ballistix pc2 6400 
Hard DriveOSMonitorKeyboard
wd aaks 320gb vista ultimate 64bit samsung 226BW dell 
PowerCaseMouseMouse Pad
corsair 620HX antec p182 g5 Qck 
  hide details  
Reply
post #2 of 3
Make sure that you not only downloaded the most recent drivers, but that you also deleted all the previous drivers as well. Try disabling one monitor and playing a game on just one and see if that helps. It might just be some incompatibility between the drivers and your 2 monitors, but keep trying things and keeping us posted.
post #3 of 3
Resolution?which are gpu and vrm temperature?which is the gpu usage while gaming?
  
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