Same overclock, diff FSB

[mandelore]

Right, just a Q out of curiosity...

I can have 2 overclocks resulting in say approx 2.97ghz on my opty 185:

1) 11x multiplyer and 270fsb resulting in 2970Mhz overclock,

2) 8x multiplyer and 372fsb resulting in 2976Mhz overclock (ignore the extra 6mhz)

Which overclock, both resulting in the same cpu frequency would yield the highest performance?

Does the fsb really make such a difference or is it just the final outcome, aka the distination and not the journey to be philosophical

 

[d44ve]

I do not think it makes a differance which way you get there....

 

[mandelore]

doh, i was maybe thinking the extra fsb could squeeze out some extra performance, now im thinking i shud have went for an opty 165 and used that extra fsb to get to my current clock, never mind tho, i did have a great stepping 185, till it died and now my current one is a sucky stepping. suppose it was just to fill in till amd gets their quads out

 

[rhythmeister]

AFAIK the extra bandwidth will assist more than the cpu multi...but I could have dreamed that. It WAS the advice I picked up when oc'ing socket a cpus Btw, that is an IMMENSE oc at 372MHz bus, respect to yr board!

 

[Ripper3]

With the higher FSB, you might see better memory throughput if you can run the memory close to 1:1, but otherwise, probably little difference.
Also, depends on the HTT speeds, along with RAM divider and CPU speed.

 

[D_o_S]

The FSB and multi combo will not matter, it is the resulting speed (memory) that makes the difference...

So, if you can run 375 MHz 1:1 with your mem, then you will definitely see better performance from the second option.

I would recommend you see how tight you can get your timings/how high you can get your memory clocks at each setting, and decide according to what is better...

Not to mention, you do get an extra 6 MHz by going the 2 route...

 

[mandelore]

i cant run 1:1 but both methods i can get over stock ram speed, my default is 275 (550) i can run upto 315ish (630)

i think on the 372fsb the ram is running at around 280 i think, it was a few weeks ago i did it, maybe a lill more (after all this is ddr1 so these modules are performing pretty damn good @ 3338 T1 )