Ah ok. That explains it. After doing a little research on those pdf docs I believe my cpu is revsion B3. I'll have to take the heatsink off to make sure. Does any happen to know if /proc/cpuinfo reveals anything about the cpu revision? It looks like there is either B3 or C0. Mark Frank Pieczynski wrote:
On Monday 23 February 2004 20:57, Mark Horton wrote:
Unfortunately I don't have a solution, but I was wondering about your DDR400 with a 242 CPU. My understanding is that this would run at DDR333. Do you have any idea if you are getting DDR400 speed? I'm not even sure how to determine this. I have used hdparm -T for some sort of rough estimate. I'd be curious what your results are.
Here's mine with a dual 240 DDR333 system:
hdparm -T /dev/md0
/dev/md0: Timing buffer-cache reads: 2680 MB in 2.00 seconds = 1339.33 MB/sec
My Thunder K8W with 2 x 240 and DDR400; Hitachi SATA Timing buffer-cache reads: 3056 MB in 2.00 seconds = 1527.47 MB/sec Timing buffered disk reads: 176 MB in 3.03 seconds = 58.08 MB/sec
In the first boot screen the BIOS display the RAM speed.
In AMD pdf about the Opteron CPU 23932.pdf you will find a table on page 14, Table 2. DRAM Interface Speed vs. CPU Core Clock Multiplier You will see a 240 runs it 166 memory only with 155 MHz, so I cannot imagine this was by design. But all CPU's, independend of core frequency, can clock the memory with 200MHz. So I assume, this was designed from beginning. And it runs perfectly. Also the HT bus is multiple by 200MHz
Regards Frank