[MPlayer-users] pentium4 bench

[Vitaly Luban]

Arpi wrote:

> I doubt.
> - they have big cooling metal on the modules (a sthey are very hot)
> - they run at 400mhz (instead of sdram's 133mhz)

Well, just looked into their datasheet. It takes from 12 clocks to get the first byte
of data
from the start of operation. The trick there is in that it's pipelined, so next op
may start
before the previous is completed, which is a good advntage over sdram, but still it
takes
a smart CPU cache control and good cache to utilize all this at full speed.


>
> - memtest86 shows 1120 MB/sec while it shows about 126 MB/s for PC133 SDRAM
>

Have you turned off your cpu cache doing this test?

Vitaly.