Ran following test on a VAIO PCG-FX605:
SiSoftware Sandra,
Memory Bandwith Benchmark -test
http://www.sisoftware.net/
Result:
Notice N5406 - System bandwidth appears to be memory limited. Generally this means that memory bandwidth is < 50% FSB bandwidth, thus CPU is starved. This generally indicates a mismatch between memory and system. Note that this does not indicate that memory timings are wrong, but the memory itself is slow.
Fix: Use higher performance memory (e.g. DDR or RDRAM) or use any additional memory channels (if present) to increase memory bandwidth performance.
That means - does it? - that depite 512MB RAM it is no surprise for the specialist, that this notebook runs slow.
(512MB SDRAM 2-2-2CL; RAM Bandwith Int Buff aEMMX/aSSE 640 MB/s; RAM Bandwith Float Buff aEMMX/aSSE 633 MB/s)
I always wondered why it is so slow, even when the CPU usage was only - let's say - 40%.
What is wrong?
