My Overclock

nheather

nheather

nheather

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Joined
19 May 2004
Posts
1,037
Location
Horsham, West Sussex
I have now almost finished my initial overclock - just one last piece of advice need.

My components are

Asus A8N-E
Athlon64 3700+ (SD)
Geil Value RAM (2 x 1GB)
Arctic Freezer 64 Pro

This is how it is currntly running

CPU - 270 x 10 = 2.7GHz (voltage = stock)
RAM - 225MHz (333 divider) - timings 2.5-3-3-7 1T (voltage = 2.65)
HyperThread - 3x = 810MHz

The CPU will go higher but I'm going to leave it for a while - not sure MoBo will do much above 270 anyway from what I've read.

My question is about HyperThreading. I've got the multi on x3 (810) at the moment. I could put it on x4 (1080) but I'm not sure how high above 1000 you can go.

(i) Do you think 1080 is okay for HT
(ii) Is it safe to just try it or is there a danger of permanent damage
(iii) What about running at 810 - does it matter - what impact is it likely to have.

Cheers,

Nigel
 
As long as you know how to clear the BIOS there is no danger in pushing it too far (within reason - don't go sticking 2V through the CPU!).

The only real way to know is to give it a try, but I suspect you'll be ok with 1080MHz, but to be honest it doesn't really make that much difference once you get over 800MHz.

Jokester
 
Leave it at 800 as thats fine - makes no difference.

270 is around max for that board - mine would fail straight away at 271. Why not use the 11 multi though and push it further. The new 3700's nearly all hit 3ghz at just over stock volts
 
I might try pushing it higher - I know the CPU runs at 2.75GHz (11 x 250), stable on stock volts because that's what I tried first.

The reason I'm running as I am at the moment is as a compromise between CPU and RAM performance.

The actual 333 divider is determined by the CPU muliplier ...

at CPU = x11, the 333 divider is 11:14
at CPU = x10, the 333 divider is 10:12

The MoBo's limit is about 270 which give's max mem speeds of

225Mhz on x10
212MHz on x11

My RAM isn't fast enough to run a 400 (1:1) divider.

So

at x11 best acheivable is
CPU = 2.970 (theoretical - not tried this high)
RAM = 212

at x10 best acheivable (which I'm running at the moment) is
CPU = 2.7
RAM = 225

I guess the debate is which of these is the better overclock.

Cheers,

Nigel
 
A tiny increse in the speed of your RAM is nothing compared to the extra speed from your CPU. You should aim for the highest CPU clock possible and try not to worry too much about your RAM.

If you have extremely good RAM and a very stable CPU you could get a very high overclock on your CPU and get a nice increase in RAM speed.

However, you need to test your RAM independantly to start with to determine how far it can be pushed. Once you know how far your CPU and RAM can go, you can play with the HT, LDT multi, CPU multi and RAM dividers to get the best compromise.

Whoever said overclocking wasn't fun :D

SiriusB
 
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