Hi, this is my first time overclocking, and it has been a very frustrating experience . My goal is 3.6, which seems to be a very common speed for overclockers using E6750. Here's my specs:
Intel Core 2 Duo E6750@2.66Ghz(333*8) 1333fsb
Gigabyte P35-DS3R BIOS F4
Crucial Ballistix 2x1Gb PC6400 firstname.lastname@example.orgV
Cooler Master extreme power 500W PSU
Cooler Master GeminII CPU heat sink
EVGA superclocked 8800GTS 320MB @578mhz
Maxtor 500GB SATAII HDD
Lite-on 20x DVD+/-RW SATAII
Antec solo case
At stock speed, the processor runs at around 1.3V, idle 19C, load 35C
I first I tried to overclock it to 3.6Ghz (450*8), increased voltage to 1.55V, and set ram timing to 5-5-5-15. Prime95 failed after 2 seconds .
Then I decreased my CPU clock to around 3.4Ghz (425*8), keep the same 1.55 voltage, idle 28C, load 48C, failed after around 2 minutes .
I decreased my CPU clock down to 3.2Ghz (400*8), voltage down to 1.4V. Failed after 8 minutes.
Do you know what's happened there? I looked at other people's specs and they seemed to be able to get to 3.6Ghz at 1.35V or even less. And if you are familiar with Gigabyte P35-DS3R and Ballistix memory, is there any special settings required for them to work at high clock speeds? For example, I have no idea what setting I should set for FSB overvoltage, etc. Thanks a lot!
I wouldn't play with the voltages imediately, see how far you can stick the fsb up to on stock voltage. Then increase the fsb still it destabalises then added like 0.05v to stabilise, rinse and repeat. You don't need an extra 0.2 volts which is quite a lot and is the reason for your crashes. There is a reason why some mobos have 0.0125v increments in their bios. Good luck.
First off for 3.6 you will need to set Vcore to 1.47 Your MCH and FSB overvolts to +.1 Leave all other overvolts in manual. Ram divider I have set at 2 (1:1) and had to add .3 because gigabyte defaults at 1.8v. Run orthos Not all C2D's are the same you might get stable at 1.41 Vcore I know others that have but most are at 1.47.
But have you heard of anybody needing 1.5+ vcore to hit 3.6 on the 6750's? It seems nearly 100% of posts i Read are below even 1.47. Just trying to figure out if it could be something else crashing my system like FSB voltage or something. My memory is 1066 so I would assume it is not the culprit since I am only running it at 900.