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OC an i3-540 Advice - Page 2

post #11 of 13
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Quote:
Originally Posted by Sisaroth View Post

The bus that connects the CPU to the RAM (the front side bus = FSB) has a certain frequency, usually called bclk (bus clock). The multiplier in the CPU multiplies that speed internally so that it can do stuff faster inside the CPU.
Memory also has a multiplier, CPU-Z calls it FSB:DRAM ratio. Usually it is 4:16 (1:4) because quad data rate bus is the standard nowadays. And then that's multiplied by two because it is DDR RAM (Double Data Rate). So if your bus is at 200 MHz then your memory speed is 200 * 4 *2 = 1600. So you'll have to change the FSB:DRAM ratio if you increase the bclk otherwise you are also overclocking your RAM which you might not want.

Thanks. Well explained.
post #12 of 13
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deleted
Edited by nipplepie - 6/11/13 at 3:48am
post #13 of 13
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I got everything workiong,but my bios settings for the multi and bus speed seem locked... How can I enable so I can change them>?
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