If you are going to overclock your processor i really suggest you to change your stock cooling before trying anything cuz ok the cpu runs pretty quiet @32-36C but stock cooling doesnt do a very well job when you overclock and it can freeze your cpu and even damage.
Asus have some nice software overclock if you dont know anything about clocking, its a good user friendly tool.
I'm currently trying to overclock my
X2-3800 (89W version)
M2N-SLI (0307 bios)
Corsair Twin2X 2048 5400C4. (corsair website says 4-4-4-12@333, but spd says 5-5-5-15)
Win2000, ethernet/graphics drivers, nothing else.
So far i'm concentrating on CPU Core overclocking, so i've:
downed RAM multiplier to /8
RAM timings to 4-4-4-12-15-2T
downed HT multi to x4
upped HT clock to 235MHz
CnQ, Q-Fan control disabled
This seems to be as far as i can go without mucking the voltages, and where it gets confusing.
CPU-Z reports my voltage as 1.216V.
Asus PC Probe 2 reports my Vcore as 1.4V.
SpeedFan says 1.22V
Which to believe? When i change my VCore to anything but Auto (i've tried everything between 1.2-1.3V, and 1.4V), it doesn't boot, even with HT lower than 235MHz.
OK, i've just noticed something weird.
I put the HT back to 200, and voltage to auto.
CPUZ & Speedfan both say Vcore ~1.22V, as before, and PC Probe says 1.4V
Then i put the Voltage to 1.25V in bios.
CPUZ & speedfan now say Vcore is 1.14V
and now i've set it to 1.3V in bios, speedfan says 1.22V and PC Probe 1.36V (and Bios Hardware monitor says 1.38V).
Set the Vcore to 1.4V in bios. Bios Hardware monitor says 1.47V. CPU-Z says 1.312, Speedfan 1.31V, PC Probe 1.49V.
So it seems that there's 2 voltage detectors here. weird.
anyway, i'll leave it at (alleged) 1.4V, back to the overclock...
And it appears the wall has been hit. Can't get past 235MHz HT with a x10 multiplier. Put it down to 240 x9, with auto voltage, boots fine.
One more try with 1.425V, and i'm giving up for fear of smoking it.
OK, 239 x10 (2389.5 MHz) appears to work so far on 1.425V (cpu-z says 1.328V)
Super pi 1M @ 37seconds, PC Probe says idling @ 38-40C, time to let this baby cool down, and work on RAM...
Can I just follow the athlon 64 process of overclocking or is this a totally different beast? Also, if you have a similiar setup please let me know your process and results.
Athlon 64 x2 3800+ with stock cooling
Asus m2n-sli motherboard
Corsair ddr2 twinx1048-6400 5 5 5 12 1.9v
I really dont think its a good idea overclocking on stock hs/fan.
Get a thermalright xp90 or the big 130mm zalman (pure copper) i have the zalman for the past two systems i built for myself its very nice.
Well I can say that I got to 2.25 GHz on stock on my x2 3800+, but it runs really hot (55C on load, which is pretty much all the time 'cause of F@H), so I have it at either stock or 2.15. I've got a Zalman coming in this week so after I install that I'll overclock a bunch more, hopefully I'll get to 2.4 or 2.5, then I'll be happy.
I've found the best thing to make the best of the overclock is to reach 2.6 on the core, keep the DDR divider at 333mhz, and keep the HTT at 4x.
What you end up with is DDR at 400mhz, HTT at a little over 1040, and a core at 2.6ghz. So, you get 600mhz on two cores. 1.2ghz clock increase. Not bad. I know what your thinking, 600 is alot when you hear about people talking hitting a limit at 2.5 or something. 2.5 is nothing for a 3800 x2. If your having problems at 2.5 then your memory timings are too tight or your not hitting enough voltage on the cpu and ddr OR your cooling solution is not up to the task. Here's mine -
2.66ghz core clock, 1.5v
10x CPU Multiplier, 4x HTT
440mhz on DDR, 3.0v
Everything that would even think about taking control is disable. Cool n Quiet... gone. Even thing on the motherboard that I'm not using is disable.
If I forgot something or any of you have a question about my setup, let me know.