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My first overclock

post #1 of 10
Thread Starter 
Well, I attempted my first overclock on my 3700+ using the specs below. not too confident in all the different options.
I initially set it at 240 (and ram with a divider- 166mhz) and it booted into windows but restarted when I tried running 3DMark06, so I just lowered the Bus speed to 225. Now it's on 2475 mhz. I left the ram ratio on 1:1 thus my value ram is on 225mhz (450mhz effective right?)

I've ran 3dMark06 and got about 4742, which is nearly 200 points gain.
Then i ran 32m on SuperPi and it finished in 30.22

Not tested it thoroughly yet but I'm thinking the Ram will hold me back on 1:1.

What do you reckon will be my max OC without increasing the vcore or vdimm?
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post #2 of 10
Quote:
Originally Posted by mithrandir View Post
What do you reckon will be my max OC without increasing the vcore or vdimm?
Honestly, no way to know until you get stuck in and try, my friend.

But I would suggest doing things in stages. It appears that you're attempting to overclock both your CPU and your RAM together. I'd recommend the "divide and conquer" approach: Find your motherboard's max HT ("FSB"), then your CPU's max speed, then your RAM's maximum. That way, when you hit a wall, you'll have a much better idea which subsystem is holding you back. Once you find your maximums, use a tool like Gogar's Athlon OC Optimizer to consolidate your overclock. (Google "Gogar;" it should be the first hit you get.)

Hope this helps!
    
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post #3 of 10
Thread Starter 
Thanks txtmstrjoe, yup new to OC so Im not 100% on everything really.
I take it you mean I should use a divider on the ram and keep it @ DDR400 to OC the A64 first?
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post #4 of 10
Quote:
Originally Posted by mithrandir View Post
Thanks txtmstrjoe, yup new to OC so Im not 100% on everything really.
I take it you mean I should use a divider on the ram and keep it @ DDR400 to OC the A64 first?
Yes.

I have value RAM and its fine for a small OC but a dividor would be best.

ALSO: You could also increas all the timings
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post #5 of 10
Quote:
Originally Posted by mithrandir View Post
Thanks txtmstrjoe, yup new to OC so Im not 100% on everything really.
I take it you mean I should use a divider on the ram and keep it @ DDR400 to OC the A64 first?
Well, let's see here. Let's isolate the CPU first. (Ideally, I'd have isolated the motherboard's maximum potential first, but this addresses your question more directly.)

To find your CPU's max potential, you put your RAM on its lowest divider setting (on most boards it's 100MHz = DDR200), set your CPU multiplier to its maximum (which is x11), then methodically (i.e., in 5MHz steps) crank up your HT ("FSB") setting on your motherboard. What happens here is that the CPU frequency isn't held back by the RAM's maximum speed (which we'll determine later).

There are various philosophies about determining whether or not you've reached the limit of your CPU, but for most people the limit is a complete failure to boot into your OS. So, if you fail to get into Windows (or, if your PC won't boot at all), you know you've just touched the limit and need to dial your settings back down to get back into the safe zone.

Obviously, this is a time-consuming process. In my opinion, though, I'd rather have a fast and stable machine that won't crash on me instead of a super-fast rig that can't stay stable at all.

Believe it or not, this is an abridged version of how I do my own overclocks!

Hope this helps!
    
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post #6 of 10
Thread Starter 
Thanks guys,

I've taken the RAM down to the lowest point (133) and I actually started at 255 HTT

I've run one instance of 3DMark06 and 1M of Super Pi so far, but it's quite late here so I won't be able to test it too much.

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post #7 of 10
Quote:
Originally Posted by mithrandir View Post
Thanks guys,

I've taken the RAM down to the lowest point (133) and I actually started at 255 HTT

I've run one instance of 3DMark06 and 1M of Super Pi so far, but it's quite late here so I won't be able to test it too much.

Schweeeeet!

The Force is strong in you. A powerful Sith you will become...
    
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post #8 of 10
Thread Starter 
Had a bit more time today to test the OC and I ran SP2004 but it ran into some error.

FATAL ERROR: Rounding was 0.49, expected less than 0.4
Hardware failure detected

(7mins, 31 secs using blend test@ 2805mhz, 200mhz Ram)
Everything else ran fine; games, 3dMark, Super Pi, etc


Tried some other combinations but ended up with 2750mhz (2.75ghz) & ram at 2:3 (161mhz) as this ran SP2004 much longer although I haven't tested it for a long period - only 1hr)
Not played around further though as I have other stuff to sort out first.
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post #9 of 10
How about your ram timings...what are they at?

Nice OC btw
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post #10 of 10
Thread Starter 
Well, my ram doesn't seem to run on 5:6 divider stable (through SP2004) however, games, apps seem to run fine.

At the moment I'm running:

FSB 256 (x11) = 2816mhz
ram = 2:3 divider @ 166mhz (332mhz DDR) 2.5-3-3-8
idles 35 celsius
loads 45-46 celsius
room temp 26 celsius

3DMark = 4908 (was 4560 stock)
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