Want to overclock Core2Duo E7500

The_Prince2017 · Mar 23, 2016

I want to overclock my Core2Duo E7500. My motherboard is MSI G31TM-P21. I just don't know how to overclock it. Please help me. Also, what is the maximum possible clock speed with the stock cooler? I have the stock cooler and don't wan't to get a new cooler.

rgrigio · Mar 23, 2016

A simple way is to increase the base clock. Base clock * multiplier = CPU clockspeed. RAM will also overclock, so you must set it to on slower frequency beforehand. (eg 800->667mhz). I was able to push a pentium dual core e5400 (2700mhz) up to 3200mhz (13,5*237mhz) with the stock cooler. Above that it got too noisy.

Another way is to increase the multiplier.

Both can be used at the same time.
A shot of your BIOS options would be helpfull.

Also, since it is a dual core part, the performance may still be limited depending on the workload. I'd go 4C if you really want to keep this platform.

The_Prince2017 · Mar 23, 2016

What about the temperatures? I do not want to fry my chip. I am not going for a processor upgrade. I will stay with this.

navalweaponsofficer · Mar 23, 2016

Their are many good tutorials on OCing. I had my E7500 up to 3.4Ghz on a CM 212 EVO. Stock cooler I could not get much out of it like 3.2 before I became uncomfortable with the temps.

To OC you will need to go into the BIOS. Their should be a Overclocking or manual section somewhere within the CPU settings. E7500 has a max multiplier setting of 11 and a FSB of 266Mhz X4 (1066Mhz). Ensure you keep your RAM at its current setting likely 800Mhz but could be 1066Mhz. increase FSB to 333 (1333) and change multiplier to 8.5 you will get 2.83Ghz, ensure you RAM is still at its current speed then save the settings and boot back into your OS. if that works shut down and go back into the BIOS and change the multiplier in .5 increments until the computer will not boot without crashing. Then go back into the BIOS again and increase CPU core voltage .25 volt increments until you get system stability. You can go to 1600FSB but it increases the amount of core speed change per multiplier increase and you shouldn't run out of headroom at 1333 as 3.66 GHZ is going to be about the max you will be able to get out of a E7500 regardless of cooling solution.

navalweaponsofficer · Mar 23, 2016

The_Prince2017 :

I know you do not want to upgrade the CPU although we do not know why. If their was a good cheep upgrade option available would you consider it? You can get significantly more computing power for about $30 with a 4 cores at 3Ghz then OC from there.

The_Prince2017 · Mar 23, 2016

What should be the average temperature under load and while idle at normal clock speed?

rgrigio · Mar 23, 2016

Yep, got my father a modded Xeon L5420 2,5GHZ (7,5*333) using the pentium cooler. Got it to 7,5*400 = 3000mhz using an el cheapo hsf 2 years ago. MB needed a microcode update, true, but the system became way more responsive compared to the pentium.

rgrigio · Mar 23, 2016

The_Prince2017 :

Varies a lot. Depends on where do you live (ambient temperature), motherboard quality, chassis arrengement... etc...

navalweaponsofficer · Mar 23, 2016

rgrigio :

Agree and would be my recommendation as well I have done many E5450 771 to 775 MODs all have been great, not all needed the microcode update either. The board in question is compatible too so it is a great cheep upgrade path.

The_Prince2017 · Mar 24, 2016

What are the risks of overclocking? Warranty is well gone so no need to worry about voiding warranty.

navalweaponsofficer · Mar 24, 2016

Frying your CPU. But it is low risk. Unlikley you will fry it.

The_Prince2017 · Mar 24, 2016

I have overclocked to 3496 MHz. System is stable. Currently, it is 333*10.5. Gonna stress test using Prime95.

navalweaponsofficer · Mar 24, 2016

You need to watch your temps while running prime 95 at that speed on the stock cooler. Temps will rise fast on stock cooler. You can use real temp or cpuz hardware monitor.

navalweaponsofficer · Mar 24, 2016

Shoot for no higher than 75deg C under full load for 30-45 min. 85 -100 you will start hitting thermal limits self throttling or system shutdowns.

The_Prince2017 · Mar 24, 2016

First I will stress test under normal clock speed to get the high temperature limit. Then I will try with overclocked one.

The_Prince2017 · Mar 24, 2016

I do not know why but my CPU temperature reaches 99 degrees Celsius while stress testing on normal clock speed. So, I should probably not overclock without getting a better heatsink and cooler. But, why does it reach that high?

rgrigio · Mar 24, 2016

The_Prince2017 :

A mild overclock hás little risks. You May have to jumper reset your MB if the overclock fails... Your system May become unstable...etc.. Older processos showed more risks (they could just fry without any warning). If anything Góes wrong, just reverr to standart settings and try again... If the CPU geys too hot it will reduce its clockspeed and you will LOOSE performance.. MY fathers Pentium was overclock for almost 2 years, and só is the xeon now. 24/7...

Want to overclock Core2Duo E7500

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