Help with OverClocking.

Heku

Heku

Member
Hello, i read from a thread that overclocking is pretty simple, first Mhz's up and then voltages.. and keep an eye on the temperature!
atm i have my AMD Phenom II X4 955 Black Edition overclocked to 3.6GHz, and the temps are only 36°C, so i think i could get a little more out of it easilly, but i just really don't know how to work it out!
i've been overclocking with AsRock Extreme Tuning Utility (AXTU).
OwZ8vfD.jpg


Could you guys help me out how to overclock this closer to 4ghz if possible or so? atm i'm using stock cooler, but after my upgrade-build i'll install CM Hyper 212 Evo, so then i hope i'll get even more out of the CPU.
 
I was able to overclock that same chip to 4.0GHz on a 212+ (not Evo, and Evo is supposedly better). Some chips overclock better than others. It the 36 at load or idle? You need to pay attention to load temps.

Slowly bump up the multiplier by one or two each time and then run Prime95 for about 5 minutes after each bump. If your temperatures start getting north of 55-60 during Prime you should stop. If Prime95 crashes, bump up your voltage a little bit then repeat at the same multiplier. Run Prime95 again. Voltage will affect temperatures more than multiplier. Just get a balance of temperature, voltage, and multiplier and your'e good to go. Once you've found a speed you want to keep run Prime95 for a few hours to ensure stability. Normally if an OC is unstable it will crash within the first few mins of Prime but you should run it longer if you've found the speed you want.

Also run Prime95 on blend settings.
 
fixed PCIe frequency to 100MHz.
computer crashed when i got to 231MHz and ran Prime95.. so i'll try with 230MHz for a longer time and see if it'll crash..
 
As stated above, load temperatures are the one you want to watch. Run something like CoreTemp while stressing the system with Prime95 or similar and you will get a decent representation of the load temperature. I believe on those CPUs you want to stay under 62C at load.

I wouldn't increase voltage more than a click or so on a stock cooler. The increase in frequency shouldn't affect your thermal load to a large degree, but adding voltage creates a ton of extra heat. I'd get the new HSF installed and give it a shot once you have that going.

4 GHz usually requires 1.4v+ on those. My X6 1090T needed like 1.5v to be 24/7 stable and was pretty hot even with a H100 cooler.

Also, it may be easier to find your limits by using multiplier overclocking. This would leave your other components in spec and just increase the CPU frequency.
 
Heku said:
fixed PCIe frequency to 100MHz.
computer crashed when i got to 231MHz and ran Prime95.. so i'll try with 230MHz for a longer time and see if it'll crash..
Click to expand...

That sounds like you're changing the FSB frequency, not the multiplier. You can do it that way but multiplier is easier and I believe more effective.
 
The heat is a little high (raised to 62C for short times), but atleast the computer didn't shutdown/restart.. run it for a good time!
J2bInlU.jpg
 
This is on the stock cooler? That's surprising. I ran in the low 60's on the stock cooler at the stock clocks.
 
If you're temps are under control then go for it. Just make sure it's stable by running Prime95 for several hours, preferably overnight and make sure the temps aren't getting anywhere north of 60.
 
Hey again, i disabled the core unlocking thing (UCC) to get my Core Temp working to get right temperature output.... well i was pretty amazed:
YTYGBiX.jpg

here i run it as stock, Prime 95 test. Seems like AXTU has it's own opinions about the temperature, since HWMonitor and Core Temp goes the same but AXTU is way lower... so i'm not really sure if i get this overclocked at all with stock cooler...
 
You need to run it for more than 12 minutes :)
I would recommend running it for at least an hour, it becomes more and more stressful.
You should keep your FSB at 200MHz in my opinion. I was able to squeeze 4.2GHz out of a Phenom II X2 555 with 1.45v using 21x200.
Was able to keep it just about cool enough with the stock cooler, but using a CM Hyper 212 Evo it was ice cold.
I would really recommend that you run the OC you think is the best for 24 hours continuously.
 
Yeah. Don't adjust the FSB, just the multiplier. Adjusting the multiplier shouldn't increase temperatures all that much, it's when you start adding voltages that you've got temperature problems. If you want to overclock for real, just get a decent air cooler for about 30 bucks or so. Hyper 212+ would do great, coupled with some Arctic Silver 5 to knock off a few degrees, then you should be set.
 
in that pic it was in stock (no oc).. gonna try adding multiplier by 1 and check the temperature (which i'm most concerned about!)
 
Heku said:
in that pic it was in stock (no oc).. gonna try adding multiplier by 1 and check the temperature (which i'm most concerned about!)
Click to expand...

Make sure to set the stock voltage manually, after that just try to increase the multiplier until you get blue screens.
When you increase the multiplier with 1 and stay with the stock voltage, the temps wont get any higher then at stock (or almost).
 
i use 1.350 V and bumped up the multiplier by 1 (16.0->17.0) and after 5mins with Prime95, CoreTemp show that cpu temperature is 70C, but it doesn't go over 70C, it balances between 69C and 70C. and it should be under 60C? i don't think i'll get this oc'd before i get a new cpu cooler.. with stock multiplier (16) it also gets to 70C after like 10mins (With Prime95 ON).
 
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Just stop and leave it at stock. Also if you're hitting 70 at stock clocks too, blast out the dust in your computer, cuz that's pretty high.
 
Heku said:
yea, gonna do it next time i clear (dust off) my computer inside.
Click to expand...

I don't think dust can cause these kind of temps. Or it has to be really bad and the dust clicks around the fins with heaps. I'd rather re-apply the cooling paste right.
 
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