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Windows Experience Index + RAM question

Last response: in Memory
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April 22, 2012 12:37:39 AM

Please bear with me, I'm sort of new at this and have never posted here before, although I have gotten lots of good information from browsing the forums (thanks for that!)

So, I recently upgraded from 8 gigs of DDR2 800 RAM, which I bought 3 years ago, to 16 gigs of DDR3 1866 RAM. I know that the Windows Experience Index is not the best metric to use as far as quality goes, but my old memory registered a 7.4, while my new memory only registers a 7.5. I'm wondering why? And if there's something I need to do to make it register higher (short of overclocking it)?

For the record, the new memory thus far is running at 1600, not the max of 1866 - my mobo automatically set it there and I haven't changed it yet.
April 22, 2012 12:42:42 AM
a c 151 } Memory
April 22, 2012 1:07:05 AM

I believe that WEI measures memory bandwidth. The older PII processors can only supply about 13Gb/s. My 2600K has an onboard memory controller and supplies closer to 18Gb/s. Therefore my 8GB of DDR3 1600 scores a 7.8 WEI.

http://techreport.com/articles.x/20188/5

Actually I'm on my laptop right now but if I remember correctly running Maxxmem my 2600K scores closer to 20Gb/s. I think the 18Gb/s score is with DDR3 1333.

http://www.maxxpi.net/pages/downloads/maxxmemsup2---pre...
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a b } Memory
April 22, 2012 1:41:34 AM

Yeah ^ 16gb @ 1600mhz with 2500k currently at 7.8. It's not your Ram, it's your memory controller module.
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April 22, 2012 1:48:33 AM

I'll go ahead and show my noobiness here - what does that mean? Is it a software issue, and I need to update drivers or somesuch? Or is a hardware feature and I need to upgrade something to improve it?
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a c 151 } Memory
April 22, 2012 1:59:50 AM

No it's a hardware thing. Sandy Bridge is a newer and superior design to the older Phenom II architecture. If you want a higher score then you would need to change your motherboard and CPU.
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April 22, 2012 2:11:16 AM

D'oh. Well, that's not going to happen anytime soon, as this WAS my upgrade, from an old Athlon64 model. Ah well, thanks for the info anyway! I'm sure I can make do for quite some time with a 7.5. :) 
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a c 151 } Memory
April 22, 2012 2:54:04 AM

Yeah WEI is not a very good benchmark. Certainly nothing to get hung up on. Your Phenom II 965 is a fine chip.
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