FSB vs Mutiplier

Cogman

Lifer
Sep 19, 2000
10,286
147
106
I have a 2500+, and was wondering, which will give me better preformance, and up on the FSB, or an up on the multiplier. Keep in mind that by an up I mean Upping the Processor to the same Clock speed, but doing it with multipliers or the FSB. My guess is with the FSB for preformance, but im not sure.
 

MDE

Lifer
Jul 17, 2003
13,199
1
81
You have it right. Up the FSB and you'll see better performance. Try to just up the FSB to 200 (assuming you have PC3200, or really good PC2700 RAM tha can handle it) and see if it's stable. If it is you are the proud owner of an Athlon XP "3200+".
 

dunkster

Golden Member
Nov 13, 1999
1,473
0
0
Best combination of FSB speed and tight timings will give you best memory bandwidth, but as MonkeyDriveExpress points out, good memory is critical.

If your memory limits that option, then you'll have to accept best FSB and multiplier combination.

If you can't decide which combination of settings is best, use a benchmark program to determine best overall system bandwidth, such 3DMark2001 for 3D performance or other benchmark to measure overall system bandwidth for intended application.

Hope this helps!
 

Boonesmi

Lifer
Feb 19, 2001
14,448
1
81
it depends on your motherboard and your ram

what motherboard are you using? and if your ram will only run 133mhz (and stay stable) then you will want to run a 133mhz fsb
 

selfbuilt

Senior member
Feb 6, 2003
481
0
0
Agreed that a higher FSB (if possible) offers best overall system speed. But it does depend on how you use the system, and memory timings can be as critical (or more) on AMD XP+ systems.

For example, I've benchmarked games and have found they often benefit more from tighter memory timings at a "normal" FSB than they do with an increased FSB and reduced timings. However, if you do a lot of video editing, you would expect more of a benefit from a higher FSB than from memory timings. It's all relative.