Memory upgrade performance decrease

[vitamina360]

Recently I upgraded the memory of my old fujitsu-siemens Xi amilo 1526, Geforce 7600, running Win7 Ultimate, from 1Gb (2x512 Mb Samsung PC4200) to 2Gb (2x1Gb Kingston RMN2-800). I knew that the chipset i945PM supports a max. of 4Gb, DDR2 667Mhz. I would be happy with a slight improve in performance but in fact what I see in Win7 performance test is a lost in graphic performance. Before the upgrade, I had an overall test of 4,5 (with 4,7 in graphic and 4,6 in games itens). Amazingly, after the upgrade I get an overall test of 4,5 (with 4,5 in every item). Drives are updated, as well as bios (1.27) and the memories are both recognised and working at 322 MHz, dual channel.
I would appreciate an explanation for that and if there is anything I can do to get at least the previous graphic performance. Thanks.

 

[Akashdeep]

Can you explain properly? What kind of graphics issue you are having? and what is the Mhz of your New RAM? Ensure that there is issue of voltage mismatch in your new RAM.

 

[vitamina360]

Can you explain properly? What kind of graphics issue you are having? and what is the Mhz of your New RAM? Ensure that there is issue of voltage mismatch in your new RAM.

Akashdeep thanks for your reply

The pc is running ok for an old system. It takes same time to boot (80 s) but is not hanging; it is possible to surf, see a movie or play counterstrike. My question had to do with the decrease in Windows Exp Index that I noticed after the upgrade in the cpu SubAgg score (from 4.6 to 4.1) and video encoding score (from 4.9 to 4.40).
Meanwhile I contacted kingston and they told me first the results gained from using the Windows Experience Index have proven themselves time and time again to be completely unreliable and therefore unrepresentative of any hardware upgrade, and second they don´t recommend this memory (RMN2-800) in this system and they do not support any 2GB modules in this system, only 1GB, although Fujitsu supports 2Gb. The memory is recognised as running at 667 MHz (322 x 2 for Double Data Rate) and the voltage seems to be ok, 1,8v. But I forgot that I have three other persons running the pc and two of them are administrators and they didn't tell me that are getting an error: raid lib error code: 101. Looked and it seems the controller does not support RAID (the pc has 2x80 gb harddisks raid 1).
My questions are ( hope you can answer) why am not getting this error in my session? I updated all drives and that should be valid for all administrators, yes or no? what can I do to eliminated the problem? It is possible that this may be the cause of the loss in performance?