PDA

View Full Version : +fsb= -rpm???


eobard
12-05-01, 05:05 PM
Get this: I reconfigured my K6-2 from 112mhzX5.0 to 124mhzX4.5, a net loss of 2mhz but a big boost on the FSB. I ran Sandra 2001 to compare past results with the current setup and got: no significant change on the cpu and mmx benches, +20% on the memory but -20% on the hard drive bench. Anyone care to take a guess why.

Placid
12-05-01, 05:25 PM
at 112 you were using a 1/3 pci divider or 37.3mhz to the hard drive controller at 124 you are probably at a 1/4 pci divider or 31.0mhz.

eobard
12-05-01, 05:50 PM
Originally posted by Placid
at 112 you were using a 1/3 pci divider or 37.3mhz to the hard drive controller at 124 you are probably at a 1/4 pci divider or 31.0mhz.

That's a good guess but my manual states clearly that there is no 1/4 divider. It's running at 41.3mhz. The 66 and 75 bus are divide by 2, the 83 bus is divide by 2.5 and above that its all divide by 3.

eobard
12-05-01, 06:55 PM
It now seems that first test result was just a quirk. I ran the benchmark again and got an 8% increase. I ran another test and got an increase there too.