FSB:DRAM divider

[grisnak]

I have a rather old 533 pentium 4, and I dont know what would give me the most performance, to run with a 1:1 divider, making the memories run at 133fsp (266mhz that is), or 155 as I usually run it, OR with a 2:3 divider, that makes the memories run at 200mhz despite the 133fsb.
Does it actually give any performance to runt mems at 200mhz though my fsb is lower?
If not I could change to 1:1 and run with nicer timings.

 

[gerrynicol]

if you wanna run tests, download 3dmark, run diff freq test with it. I take it you got a P3, I used to get my 500Mhz 2 550Mhz( a long time ago)

 

[Deleted member 3]

He has a P4 with a 533/133 MHZ fsb

I think it depends on the application, the FSB would increase overal system speed, the memory speed would just increase, well, the memory speed. I think you'd have to benchmark to see which is more effective. You could also try to increase latencys (set ram at cas 3 and such) and see what the highest FSB you can runs stable is with a 2:3 divider.

 

[grisnak]

The highest I can sqeeze from my cpu is 155fsb, wich means 230(460) mem fsb/ddr speed. At that speed I can run 3-3-3-6 timings. Or maybe the last one was a 7. Not too bad at least.
Well, I guess I'll just have to bench.

 

[Deleted member 3]

Why not run 155 with 2:3 divider then?

 

[Morlak]

get SiSoft's sandra and run memory benchmarks, it'l help ya get your most efficiect fsb speed.

 

[grisnak]

Great idea, but would more mem transfer speed mean more fps in games that also demands much memory? Caus thats what I want.

 

[Deleted member 3]

Most likely yes, don't expect miracles but it will matter in some games.

 

[SyK1]

is there any program i can use to change the divider