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barton 2500+ oc'n

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Your temps seem high and I would lower your voltage. The PCI on the board is locked and I have had no problems with any USB devices. You didn't mention your voltage but I run 1.7 and I'm a constant 43 load with a hot ambient temp.
 
You want the ratio to be synced. Like 3:3,4:4, 5:5, 6:6. You can also relax your memory timings to increase your FSB.
 
You will want to keep your temps in the mid 50s. 55 is a good limit to set on yourself. That's what I use with my slk800 and 2700+. I'm pretty sure that will be ok for your Barton. No you don't want to get between 60-70. That seems a little high to me. :)
 
If you go above 50C system will probably start to get unstable. What are you using to measure your temps and to test you system for stability? What memory do you have?
 
What vcore where you useing and you said you got that same error @ 2 ghz and 2.2?
 
I was getting SUM input and output differ error from prime.
Upped the voltage a bit and now it's very stable with no errors 24/7 crunching full load for 2 weeks.
Have played UT2003 for hours and no problems.

Running at 2300 13.5 x 170.37 vcore 1.825
see sig.

All chips are different so you should test up to what oc it stays stable. Also you can up the voltage a bit to reach more but at some point it doesn't help.

I wouldn't go above 1.85 - 1.9 V core for tbred B/barton
Also don't go so high that your temps go above 50C at full load.
 
Also when you oc do it step by step. Don't overclock cpu and memory at same time cause if it fails you don't know which one fails.
So set the fsb at value at which the system is very stable.
Then up the multiplier only and check if it is still stable.
This way you will find the avarage maximum of the cpu.

Then set the multi to something very low (7x) and start upping the fsb. Find the max stable fsb for your memory but don't go so high that your pci goes above 37MHz. (depends on chipset...)

After you know the max fsb and max cpu clock speeds, find a sweet spot with high fsb and multi so that the cpu speed is bellow its stable max and the fsb is bellow the memory stable max.

My memory was giving me problems above 180MHz at agresive timings. And I thought my barton couldn't go higher then 2.2GHz.
I just didn't expect the memory will crap out before 200MHz but it did.
Now the memory is at 170MHz and the cpu is at 2.3GHz...

So do it step by step
 
kfc, to overclock the memory you want to change the memory ratio......I am running PC2100 right now....my FSB is at 195 and my memory ratio is 80%, putting it at 156 mhz......

i'm running at 1.7 vcore and i'm stable. I'm gonna set my vcore limit at 1.75, because I don't like high temps, hehe. I thuroughly enjoyed my load temp of 36C when I had my barton 2500 and 8rda+ at stock, heh. I'm running at 42 load currently.....

As to how high is too high for vcore......test. Just keep your load temps below 60. Once you pass that, you might start to see system instabilities. I've run safely with my 1600 pally and 1000 tbird at 65C, but a degree or two higher would cause crashes.

Anyhow, put your vcore as high as your temps will allow. Keep your temps below 60 and you'll be fine.
 
PLA:
How did you go to 13.5 multi?

Is'nt the barton 2500+ locked at x12.5?

I can run my barton 2500+ at 12.5x166

I tryed 12.5x180 and did a burn in test for 10min that was ok.
But when i tryed to play a game the computer rebooted

any hints?

I'm using a asus A7N8X Deluxe card
and some twinmos ddr400 memory.

Vcore on 1.65v and ddr on 2.7v

//Casull
 
Welcome to the forums!

The barton and all tbreds are factory unlocked.
Your board have to be able to access all values.

See here for explanation.

You may not be able to go past 2200 MHz at stock voltage. You need to increase the vcore. But you need good cooling to do so safely.

Also try first to go at 10x180 and check if it is stable to ensure your mobo and memory can handle it. If it is stable (prime95 + heavy games) then try again with 12.5 x 170 and increase 1 by 1 up to the max stable point.

If your mem/mobo can't handle 180 then you better use higher multi and 166 FSB.

Ask in the amd board threads if your board can access above and bellow 12.5x/13x at the same time/same cpu. If it can then try with higher multi.
 
If your board cannot switch above 13 and you still want to do so you may do a wire trick. It was described somewhere on the site and in some threads...
 
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