MFLOPS & MIPS vs. bandwith...

[Aenslead]

I have a question for you guys, that might actually end up in personal likes...

See, I have an ASUS A7N8X v. 1.06. Marvelous motherboard, incredibly overclockable... however, there is a slight question in all of this: see, I have an Athlon XP 2400+, wich I have been able to top at 2.37Ghz... but in wich I face two cenarios.

If:

I use a 169FSB and 14x multiplier, I get:
SANDRA:
CPU Bench: 8831 MIPS
MM Bench: 13125 MFLOPS
Mem Bench: 2570 Mb/s

PC Mark:
Mem bench: 5037
CPU Bench: 7103

or...

I use 183FSB and 12.5 multiplier, I get:
SANDRA:
CPU Bench: 8620 MIPS
MM Bench: 12570 MFLOPS
Mem Bench: 2801 Mb/s

PC Mark:
Mem bench: 5190
CPU Bench: 6850

So there: I have more bandwith, but less CPU power. Which matters the most? Which is most important to look out for, between these two, and why?

Think...

 

[pspada]

169FSB and 14x = 2366Mhz
vs.
183FSB and 12.5x = 2287.5Mhz

so it's not surprising that you get different results.

And a cenarios is a Roman coin, I believe.

 

[Aenslead]

Right.

So there's the question? More FSB or more Mhz?

And you are right, that would be scenario.

 

[KF]

More bandwidth never hurts for a given CPU speed. I'm assuming you haven't changed the memory timing significantly, and the FSB: memory speed ratio is 1:1, so the numbers represent a direct tradeoff of memory speed vs. multiplier. If you can't put the memory speed up any further with the 12.5 multiplier, what people would do is bump the multiplier up .5 and drop the memory speed just a little to get a close CPU speed.

2366/13 would give you 182.

Due to caching, not all benchmarks show much difference when the memory bandwidth goes up.

 

[pspada]

Bandwidth is good, but 2366Mhz than 2288Mhz. You'll get better performance from the faster actual clockspeed than from the faster fsb when there's that much difference. How about 200x11.5, or will your system not do that?

 

[Aenslead]

Nah... my cooling sucks.

In a week or so I will be getting a Cooler Master Aero 7+, wich should certainly help me deal with high voltages.

I am using right now 1.725V running the 183Fsb... and is 97% stable... with temps from 52°C idle, to 60°C load.

The highest setting I have been able to obtain is 10x200Mhz @ 1.750V.

And yeah, I beleive too more Mhz are better than more FSB.