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Window Experience Index score drops after new GPU driver

post #1 of 3
Thread Starter 
Just curious as to why the Windows Experience Index changes when new drivers are installed? This isn't the first time after also updating my gpu driver, the graphics and graphics gaming score was lowered by .1 or .2 (can't remember) and this time my ram score dropped by .1.
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post #2 of 3
It's due to how technology is improving and how your hardware compares to the latest. See the quote below which is what you'll see when you click "What do these numbers mean?"

Quote:
What is the Windows Experience Index?

The Windows Experience Index measures the capability of your computer's hardware and software configuration and expresses this measurement as a number called a base score. A higher base score generally means that your computer will perform better and faster than a computer with a lower base score, especially when performing more advanced and resource-intensive tasks.

Each hardware component receives an individual subscore. Your computer's base score is determined by the lowest subscore. For example, if the lowest subscore of an individual hardware component is 2.6, then the base score is 2.6. The base score is not an average of the combined subscores. However, the subscores can give you a view of how the components that are most important to you will perform, and can help you decide which components to upgrade.

You can use the base score to buy programs and other software that are matched to your computer's base score. For example, if your computer has a base score of 3.3, then you can buy any software designed for this version of Windows that requires a computer with a base score of 3 or lower.

The scores currently range from 1.0 to 7.9. The Windows Experience Index is designed to accommodate advances in computer technology. As hardware speed and performance improve, higher score ranges will be enabled. The standards for each level of the index generally stay the same. However, in some cases, new tests might be developed that can result in lower scores.
I am particularly interested in the last paragraph.

So when you get the latest driver, the score can get updated to reflect how your hardware compares to the most current hardware supported by that driver (at least, this is the way it seems to be working). So I mean I think that if you were to use an older driver (particularly one that doesn't support the 300 or 400 series), then the score might go back up to where it was.
    
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CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.384 - 1.392V) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveOptical DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
CoolingOSMonitorKeyboard
Thermaltake Frio Win 7 Home Premium x64 SP1 Retail Samsung 2253BW (1680 x 1050) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
PowerCaseMouseMouse Pad
Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Microsoft Intellimouse Optical (not 1.1A) Basic, but premium round 
AudioOther
X-Fi Titanium HD Altec Lansing VS4121 (2.1 speaker system) 
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post #3 of 3
Thread Starter 
Interesting, thanks!
My First Build
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CPUMotherboardGraphicsRAM
i5 750 @ 3.6GHz (Stable) Biostar T5XE CFX-SLI 2x BFG GeForce GTS 250 1GB (SLI) 4GB DDR3 Corsair XMS3 
Hard DriveOptical DriveOSMonitor
WD 1TB Green / WD 500GB Black / Seagate 500 & 250 Pioneer DVR-S18MBK DVD/CD Windows 7 Ultimate x64 Gateway 22" HD2201 
KeyboardPowerCaseMouse
Logitech G15 v2 OCZ Tech 700W StealthxStream CM 690 II Advanced Logitech MX Revolution 
Mouse Pad
Steel Series 
  hide details  
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My First Build
(13 items)
 
  
CPUMotherboardGraphicsRAM
i5 750 @ 3.6GHz (Stable) Biostar T5XE CFX-SLI 2x BFG GeForce GTS 250 1GB (SLI) 4GB DDR3 Corsair XMS3 
Hard DriveOptical DriveOSMonitor
WD 1TB Green / WD 500GB Black / Seagate 500 & 250 Pioneer DVR-S18MBK DVD/CD Windows 7 Ultimate x64 Gateway 22" HD2201 
KeyboardPowerCaseMouse
Logitech G15 v2 OCZ Tech 700W StealthxStream CM 690 II Advanced Logitech MX Revolution 
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Steel Series 
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