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What are CPU & RAM Ratios

post #1 of 9
Thread Starter 
I've heard about CPU & RAM ratios, and have no clue what they mean.

My CPU will be a Quad e6600
My RAM will be an OCZ Platinum 2GB 240-Pin DDR2 SDRAM DDR2 1066 (PC2 8500) Dual Channel
post #2 of 9
Its the ratio your FSB runs with the speed of your RAM.
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post #3 of 9
Its the CPU bus speed ratio vs. the RAM bus ratio.
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post #4 of 9
Thread Starter 
Quote:
Originally Posted by bl!nk View Post
Its the ratio your FSB runs with the speed of your RAM.
wats fsb
post #5 of 9
Thread Starter 
Quote:
Originally Posted by Amdkillsintel View Post
Its the CPU bus speed ratio vs. the RAM bus ratio.
how do u determine your ratio
post #6 of 9
Quote:
Originally Posted by blade007 View Post
how do u determine your ratio
Hit the edit button homie...LOL
It depends on what you have...the deciding factor is if they (RAM & CPU) will let each other be stressed separately...a good modded BIOS will do it
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post #7 of 9
Front side bus.

FSB is what you use to overclock, and it determines your clock speed.

For example, your front side bus multiplied by your multiplier (a bios setting, you'll see how it works in a sec) = Clock speed.

266fsb x 9 (multiplier aka multi) = 2400mhz

That is what you're quad core will be running at.

Your ram runs at the same speed of your front side bus (FSB). So, your ram will be running 266mhz. BUT, its DDR2. DDR stands for Dual Data Rate, so multiply that number by 2 for your ram speed (533mhz).

266fsb x 9 = 2400mhz
Your ram is 266x2 = 533mhz.

A CPU/RAM ratio is the speed that your ram and FSB run. You can run your ram faster than your fsb, so a ratio of 1:2 would mean your ram is twice as fast as your FSB. That would make your ram at a total speed of 1066mhz.

COnfusing, i know..
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post #8 of 9
Thread Starter 
wats a good ratio to have, 1:1 i assume
post #9 of 9
use a divider for extra bandwith...166 is a good place to start.
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