OCing

Well, the FSB/RAM ratio is the ratio of your FSB speed to your RAM speed, eg. if you're using DDR2-8500 (that's 1066 MHz) and your FSB is set to 333 MHz (standard for P4), then your RAM would normally be running at 666 MHz instead of 1060 MHz, which of course is wasted performance.

Therefore, if you set a FSB:RAM ratio to something like 5:8, the RAM would be running at 2* (333 / 5) * 8 = 1065.6 MHz.

You can also use this to your advantage if you're overclocking. For example, if you now want to raise your FSB to, say, 400 MHz, you can set a multiplier of 3:4, which would leave your RAM still running at 2* (400 / 3) * 4 = 1066.6 MHz, instead of the 1280 MHz we would have gotten had the ratio been left at 5:8. (Since the RAM is rated for 1060 MHz, this would most likely result in a crash and bios reset).

Generally if left on [Auto], the BIOS sets the ratio automatically to get the highest speed that's below the memory's rated speed. In the example above, while initially the BIOS might have set it to 5:8, when pushing the FSB up it would automatically drop it to compensate.

But it helps to have a knowledge of the possible ratios and resulting speeds when determining what FSB to set. For example, if you know your memory runs at 800 MHz, you could set the FSB up to 400 MHz and leave the ratio at 1:1, then drop the CPU speed modifier. That way you can ensure your memory runs at maximum performance even if you want to keep the CPU at the same speed.
 
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Hey. I kept coming back to add more, some of the previous stuff wasnt needed due to the newer text I wrote so ive cleaned it up for less spam.

Anyway Hi again :)
My CPU fan eventually came today, as I missed it on monday. Got it setup but I would have prefered the FANs position rotated 90degrees so that the air was blowing horizontally, instead of blowing vertically like it is at the moment. I did it wrong. And unfortunately I couldnt figure out how to pull it back out, it seemed like it was stuck in permanently lol.

The picture below should describe better how Ive got it positioned

This is how I did want it,
_________
Picture-1 >


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And this is how it is right now,
_________
Picture-2 >


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I have overclocked the CPU in bios from 333fsb to 389fsb, and I changed the CPU voltage to 1.31.
The CPU temp atm is 48oc, I ran prime just now and after a short while it seemed to stay around 65oc.

With the old cpu fan if you remember when running prime it went over 70oc and that was when it wasnt overclocked, so I would say this fan is better yeah.

The memory mhz has also increased by itself from 400mhz to 480mhz, Im not sure if that is good or bad. Is it ok?
Not sure if there is anything else I need to check on


Lastly about the position the fan is in. Have I gotten it wrong, and is Picture 2 the better option? Or is Picture 1 like I am guessing the better option?

That should be a lot less painful to read now hehe :P

Thanks
 
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Several of my friends mount their CPU cooler vertically, it should be fine if your temps are fine. I would suggest trying horizontally though just to see what temps you get - once you manage to remove it.

I would be wary of running your RAM at 480 MHz though, try seeing if you can get it slower (below or at 400) in the BIOS.

Otherwise, run prime95 with rounding checking activated (Advanced menu) for several hours and see if it errors out. If it's stable, don't bother with the RAM.
 
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