Tecra M3 - strange observation on performance of RAM (lack of)
Hi people.
I recently moved up to 2 x 1 GB of DDR2 (533) on this laptop, 2 x 512 MB, and one day a week, there are, or so I'm curious and ran the SiSoftware Sandra benchmark of band memory bandwidth. The result struck me as less than it should be - band values memory bandwidth both Int and Float were ~ 900 MB/s, similar to a unique key of DDR1 on a platform VIA the database of Sandra and fall considerably short of still a single stick of DDR1 on a platform of Intel 855 chipset - and yet it is a laptop running dual channel DDR2 (on the 915 chipset). He got even more interesting, when I removed one of the DDR2 sticks, to channel unique and observed the same performance. Utility as memtest86 +, CPU - Z and Sandra are all the report I use actually dual channel when there are two sticks installed, then why is there no return thrust? Also latency memory test results are extremely poor.
Long story short, I have yet to understand the nature of this problem and, if is repairable, or is a material defect inherent in the design of this laptop. All tests without other stuff running, CPU - Z shows RAM running at 266 (533), 4-4-4-12 hours. BIOS is the latest available for the M3 w 1.20 / FBCF.
Here's what I've tried (may be forgetting something, it will add if I remember):
Tried two sticks and a stick, two my old RAM (which came with the laptop) and the new OCZ. Basically, all possible combinations are covered.
Memtest86 + shows no error after hours of testing on the RAM.
Charge Windows Installer, latest INF Intel chipset drivers etc, without change.
Any ideas?
I agree with Akuma.
I put t know what performance gain memory you expect, but I doubt that you feel in normal conditions of use
Tags: Toshiba
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