First post, by Erik765
Hi there,
I recently picked up a CAF N418 motherboard, which had a SX-25 socketed on it. I just got a DX2-66 chip and threw it in there, set the jumpers correctly, as per the manual (and as per here: http://th99.classic-computing.de/src/m/C-D/31289.htm ) and all the benches I run on it are showing the CPU at 50Mhz and topbench shows a score of 87, matching an AMD386DX-40
Here's the weird part- if I change the CPU speed jumpers to 20Mhz I get a score of 105 in topbench, but the comparison match shows I'm running at a i386DX-40 speed?
Sysinfo shows a CPU score of 70.4 as compared to it's DX-33 rating of 71.2
chkcpu shows an "Internal CPU Speed" as 50.3 MHz no matter what I set the CPU speed jumpers to.
Am I doing something wrong here?
I will admit, when I first attempted to install the CPU, I had it rotated 90 degrees counter-clockwise, but the machine wouldn't even power on. I hope this didn't ruin anything. It booted up fine once I installed it correctly.
Is there some other setting or component on my setup that could be causing the slower-than-expected bench results?
There is no L2-cache on this board, so I know it won't scream, but I'm at least expecting chkcpu (and every other test) to show it as a 66MHz chip (not 50MHz).
It doesn't seem to make any difference if I set the CPU type jumpers to either PQFP or PGA (although I'm thinking it should be on PQFP?)
Please help! It took me 3.5 weeks to get this CPU shipped and I've been waiting anxiously 🙁
Thanks in advance,
E
PS- this chip runs very hot. I'll definitely need a fan or a big heat-sink on it.