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How well do x2 3800s overclock?

Caporegime
Joined
12 Mar 2004
Posts
29,952
Location
England
Seeing that these are only £85 new I thought that maybe it is time to upgrade.

I need single core apps to run as fast as my current cpu though so I will need at least another 200mhz. Iam using a Arctic Cooling Alpine 64 cooler.
 
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If you can control the raging heat and poor IHS contact then with a decent stepping your onto a winner.

See my sig for mine, 939 though
 
mines at 2850 prime stable, was stable at 2900 but crashed in C&C3. Windows would load at 3ghz but failed 1/2 way through mark 05 and crashed in supreme commander aswell
 
Energize said:
Seeing that these are only £85 new I thought that maybe it is time to upgrade.

I need single core apps to run as fast as my current cpu though so I will need at least another 200mhz. Iam using a Arctic Cooling Alpine 64 cooler.

Got my recent x2 3800 939 from here 3weeks ago, Clocks to 2600 on both cores stable with 64 pro Can't run my mem on at full speed though think I might have a weak mem controller on my Chip ! Used to run my ram at 295 on my old 146opty and its Geil one so its good for it.
 
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gt_junkie said:
Agreed, mine went straight to 2.5ghz. Was a bit hot (going by temp monitor) but ran perfectly fine for 6 months!!! :)

gt

Yea one of the cores is pulling less volts than the other according to Cpuz, and its the one that fails on Orthos all the time at more than 2610mhz.

Need to ty with more volts, going to volt mod the board and if I knacker it i'll have to get a DFI Lanparty to make it scream.
 
Mine is working fine at 2600 at 1.35v which is highest i can set on this asrock board. im sure theres more to get from it once i upgrade to a better board with more controls. 2400 was fine at stock 1.30v.
 
MadMatty said:
Mine is working fine at 2600 at 1.35v which is highest i can set on this asrock board. im sure theres more to get from it once i upgrade to a better board with more controls. 2400 was fine at stock 1.30v.

Now there's an idea, I've never tried to see if it is stable at 2610mhz on less voltage. Will give it a bash tonight me thinks.

Should help temps too,
 
Im having real trouble overclocking my X2 3800 (manchester core) on my Gigabyte GA-K8N Pro Sli, computer wont post past 215 Mhz. Ive done everything, lowered DDR speed, upped the voltage, change the multipliers, change the RAM timings. EVERYTHING!
 
Gonzo0 said:
Im having real trouble overclocking my X2 3800 (manchester core) on my Gigabyte GA-K8N Pro Sli, computer wont post past 215 Mhz. Ive done everything, lowered DDR speed, upped the voltage, change the multipliers, change the RAM timings. EVERYTHING!


take it you are running your ram on a divider ? and have lowered hyperthreading ?
 
4 stick will more than likely limit your overclock, as I recently found out with my A8N-SLI SE / X2 4200 / 4x512 PC3200 after being told that my ram could be holding me back. The X2 would not clock past 2.5ghz no matter what I tried. Removed 2 sticks, and it'll hit 2.75ghz @ 1.4v
 
MoodyB said:
4 stick will more than likely limit your overclock, as I recently found out with my A8N-SLI SE / X2 4200 / 4x512 PC3200 after being told that my ram could be holding me back. The X2 would not clock past 2.5ghz no matter what I tried. Removed 2 sticks, and it'll hit 2.75ghz @ 1.4v

Nice clock MoodyB ;).

As you can see in my sig Energize, there are a few out there that will go the distance.

I could hit 3Ghz but I can barely get a 3dmark06 finished @ 2.9Ghz due to the heat. I'll invest in watercooling when AMD bring out their new chips and I get either Intel or Conroe. Whatever is best performing at that time.

From going to a 3700+ San Diego @ 2.7Ghz to the X2 3800 @ 2.8Ghz I noticed the difference. Even more so when I got a second hand 3700+ San Diego that hits 2.95Ghz @ 1.5ish volts. I put it in this machine and even running 150Mhz faster than my X2 chip it was still just one core. Any lock ups happen no matter what speed I'm hitting will always effect single core systems.
 
My lcbie 0618 I think, does 2.8GHz on stock vcore and 3.06GHz on 1.55v, stable for folding@home. I run it at 2.75 as my ram doesnt like anything over 233MHz...bought off an auction site a few months back.
 
El Jimben said:
Check this baby out - http://forums.overclockers.co.uk/showthread.php?t=17578954

I'm pretty sure the average overclock was more than 2,641MHz too, don't think A.N.Other updated that bit recently though.
Judging by that chart there doesn't seem to be any difference between the Manchester and Toledo cores. They mostly manage 2.5, which is about as far as I'd want to push one.
 
Gonzo0 said:
Im having real trouble overclocking my X2 3800 (manchester core) on my Gigabyte GA-K8N Pro Sli, computer wont post past 215 Mhz. Ive done everything, lowered DDR speed, upped the voltage, change the multipliers, change the RAM timings. EVERYTHING!

Dont suppose thats got an unlocked PCI?, i have a gigabyte sli mobo in my second machine - and that isnt locked-meaning the inevitable rubbish clocks.
 
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