I am thinking about overclocking my humble E6400, since I decided not to upgrade yet, in order to see what happens with the i7s and with the Deneb competition. I am not a fanboy of any brand, so I don't might waiting until January or February to make a better choice. I've made a couple of threads here asking what I should do, but it's so hard to decide in this transitional time in the market
Anyway, I want to overclock my Core2Duo E6400 @ 2.13 GHz; for now.
My other specs:
Asus P5B mobo (1066 FSB)
2 GB DDR2 PC2-5400
400W PSU (came with the case, which is an unknown brand)
Windows XP Home
WD 250 GB Sata II
1) Can I overclock even slightly with the existing PSU (which has caused no problems for 2 years now)?
2) I want to do it on stock air and without changing voltages. What values should I put in the FSB or the multiplier (which I think can't be changed)?
3) First time overclocker, I'd like to keep it really simple: Get into BIOS, change FSB, save, start Windows. Anything more and I probably won't do it. Is it possible?
I just want a slight upgrade until I get my new PC or I upgrade the existing one (and by upgrade, I mean changing CPU, PSU, mobo and RAM). Can it be done?
Anyway...first, I'd ditch the PSU - most PSU that comes with the case aren't actually solid PSUs. If you draw too much load, you can damage some of the components. Its not the load as well.. its the continuous power the psu can provide.
When you OC, the first thing I would do is change the CPU voltage from "AUtomatic" to the fixed default value.
It should be somewhere between 1.25 and 1.30 for that processor.
Then ensure the memory is set to a 1:1 ratio.
Then slowly increase the FSB.
If you have the stock CPU cooler, I would not go to far too fast.
Perhaps up to 300FSB from 266.
Check your temps under load.
Then slowly increase.
If you had a decent after market CPU cooler, then you could hit a FSB of 333 which would take you to about 3.2Ghz w/o an issue. (I did not do the math but I know that would take the e6300 to 3.0Ghz....)
I too have an e6400 and i've gone beyond the 3.0ghz barrier on my gigabyte DS3.
It is a solid chip that performs well for being 2 years old. It should easily take 3.2ghz with an afterstock cooler above 1.25v. I usually keep mine at stock because I do not see any noticable performance difference, which surprises me.
Thank you all for your responses. But I have a big problem right now. I went into the BIOS, changed the Vcore to default and not auto (about 1,3), then went and changed the FSB from 266 to 290, taking things slowly. I even made the fan work faster, just in case (the CPU temp was about 56 celcius, which I consider OK, especially since I was playing a game right before.
I restart XP and run cpu-z. THE HORROR. The FSB was indeed at 290 but the multiplier was set at 6.0x meaning I had actually reduced the frequency.
Panicking, I went back to the BIOS and set everything the way it was, except for the fan speed. The FSB went back to 266, but the multiplier stayed at 6. Now I have a 1.6 GHz E6400. What can I do??