CPU Question, 2.4Ghz

I have a Sony PVC-RX650 with a 1.6Ghz 400FSB, the manual says it can take upto a 2.4Ghz. I was wondering if I could use a 2.4Ghz with a 800FSB? Wouldn't it just run at the 400Mhz FSB Speed?

No, the clockspeed for the cpu is determined by this formula:

Multiplier x FSB = clockspeed

so for your cpu:

16 x 100FSB (it's 100 b/c Intel's are quad pumped) = 1600mhz

So theoretically if you could manage to put a 2.4C in there and it reduced it to 400FSB, this is what you'd have.

2.4C (normal) 12 x 200FSB = 2400mhz
2.4C ( at 100FSB) 12 x 100FSB = 1200mhz

This isn't really possible b/c if you're motherboard doesn't support 800FSB cpu's, then it won't work when you put the cpu in.

I'd guess that your computer will support up to a 2.4A (400FSB), but not anything with a FSB that's over 400. You'll need to get another motherboard if you want to get a 2.4C.

BTW, if you're looking at 2.4A's remember to get the Northwood core. The Prescott core 2.4A is actually a 533FSB, so it won't work in your motherboard.

Welcome to the forum

Just be sure you do not mistake a 2.4 Northwood with a 400FSB with a 2.4A Prescott, which is a 533mhz bus.

Edit: Forgot to sayWELCOME TO THE FORUMS