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Problems OCing a E6750

post #1 of 11
Thread Starter 
I just started trying to OC my e6750 and have hit a dead end. I got to 3.12ghz stable and at very low temps. (20 idle and 33 full load) This is at 1.2v and its running very well. Unfortunately if i raise the fsb even by 10 and raise the voltage all the way to 1.26 it still wont boot. I was told by some friends that it might be dangerous to go any higher. I think they may be right because there's such a gap in between my voltage now and the highest ive tried for only 10 more fsb. I'm new to OCing and know I shoulbe be getting much more out of my cpu and need some help on what might be wrong. Do i just need to up the voltage or have I hit the ceiling? This is with a 600w PSU if that helps any.
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post #2 of 11
THe e6750 can handle higher vcore. The default vcore is 1.36 for those chips. It not like the 45nm that you have to be very carefully so bump up the vcore. Then we will take it from there.
Yin
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Yin
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post #3 of 11
Thread Starter 
Quote:
Originally Posted by Danbeme32 View Post
THe e6750 can handle higher vcore. The default vcore is 1.36 for those chips. It not like the 45nm that you have to be very carefully so bump up the vcore. Then we will take it from there.
Thank you very much, another problem was I didnt know the default setting for the vcore. I was just guessing. So it seems I have alot of room to OC. Thanks!
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(13 items)
 
  
CPUMotherboardGraphicsRAM
E6750 @ 3.1ghz Gigabyte GA-EP45-UD3R EVGA GTX 260 core 216 55nm 2gig x 2 G.Skill DDR2 800 
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WD 250gb 7200RPM & 1TB samsung 5400 Windows 7 64bit Acer AL2216Wbd 22'' corsair 850tx 
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E6750 @ 3.1ghz Gigabyte GA-EP45-UD3R EVGA GTX 260 core 216 55nm 2gig x 2 G.Skill DDR2 800 
Hard DriveOSMonitorPower
WD 250gb 7200RPM & 1TB samsung 5400 Windows 7 64bit Acer AL2216Wbd 22'' corsair 850tx 
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CM 690 stock 
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post #4 of 11
Quote:
Originally Posted by Opeth07 View Post
I just started trying to OC my e6750 and have hit a dead end. I got to 3.12ghz stable and at very low temps. (20 idle and 33 full load) This is at 1.2v and its running very well. Unfortunately if i raise the fsb even by 10 and raise the voltage all the way to 1.26 it still wont boot. I was told by some friends that it might be dangerous to go any higher. I think they may be right because there's such a gap in between my voltage now and the highest ive tried for only 10 more fsb. I'm new to OCing and know I shoulbe be getting much more out of my cpu and need some help on what might be wrong. Do i just need to up the voltage or have I hit the ceiling? This is with a 600w PSU if that helps any.
Check your ram. When you increase the FSB, you also increase the ram's overclock. run CPU-Z and click on the memory tab. The ram, if it is rated at DDR2 800, should be running at 400MHz. If you are running the ram faster then 400MHz, it can be casuing the instability. To fix this, you will have to lower your ram's divider. Nobody can give you any detailed help without knowing your system specs (see note at bottom).

You can also try increasing your vcore to 1.35v and see how high you can go. You can safely go up to 1.5v to the CPU, but at that voltage, temps are an issue, so you wouldnt want to go that high unless you are water cooling.

*Note - Go here and fill out your system specs: Edit System
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post #5 of 11
Here is the specs for your chip.You can go up to 1.5 vcore . You can get at less 3.6 with that chip. But start off slowly. Baby steps. One thing at a time. It will take a while till you find what is stable for you. Go to the download section and download some software to help you stabilize your chip.

http://processorfinder.intel.com/det...px?sSpec=SLA9V

Hey And Welcome to OCN.
Edited by Danbeme32 - 5/13/08 at 12:35pm
Yin
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Yin
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post #6 of 11
Thread Starter 
Quote:
Originally Posted by Danbeme32 View Post
Here is the specs for your chip.You can go up to 1.5 vcore . You can get at less 3.6 with that chip. But start off slowly. Baby steps. One thing at a time. It will take a while till you find what is stable for you. Go to the download section and download some software to help you stabilize your chip.

http://processorfinder.intel.com/det...px?sSpec=SLA9V

Hey And Welcome to OCN.
Thanks for the warm welcome! I updated my system specs. I'll try OCing it some more now .
My PC
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6750 @ 3.1ghz Gigabyte GA-EP45-UD3R EVGA GTX 260 core 216 55nm 2gig x 2 G.Skill DDR2 800 
Hard DriveOSMonitorPower
WD 250gb 7200RPM & 1TB samsung 5400 Windows 7 64bit Acer AL2216Wbd 22'' corsair 850tx 
Case
CM 690 stock 
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My PC
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6750 @ 3.1ghz Gigabyte GA-EP45-UD3R EVGA GTX 260 core 216 55nm 2gig x 2 G.Skill DDR2 800 
Hard DriveOSMonitorPower
WD 250gb 7200RPM & 1TB samsung 5400 Windows 7 64bit Acer AL2216Wbd 22'' corsair 850tx 
Case
CM 690 stock 
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post #7 of 11
Thread Starter 
I'm now at 1.35v with 1620 fsb. sitting stable at around 55 under a full load. Cant push it even 10 more fsb higher again. Tried with ram at 400 also. Are there any other voltages that might need tweaking?
My PC
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6750 @ 3.1ghz Gigabyte GA-EP45-UD3R EVGA GTX 260 core 216 55nm 2gig x 2 G.Skill DDR2 800 
Hard DriveOSMonitorPower
WD 250gb 7200RPM & 1TB samsung 5400 Windows 7 64bit Acer AL2216Wbd 22'' corsair 850tx 
Case
CM 690 stock 
  hide details  
Reply
My PC
(13 items)
 
  
CPUMotherboardGraphicsRAM
E6750 @ 3.1ghz Gigabyte GA-EP45-UD3R EVGA GTX 260 core 216 55nm 2gig x 2 G.Skill DDR2 800 
Hard DriveOSMonitorPower
WD 250gb 7200RPM & 1TB samsung 5400 Windows 7 64bit Acer AL2216Wbd 22'' corsair 850tx 
Case
CM 690 stock 
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post #8 of 11
You could up the fsb and the north bus to 1.4v. I think it's called different in the Nvidia chip. You could go a little higher on the vcore to 1.375 to 1.4. The vdroop sometimes effects the oc. Like i have my vcore at 3.8@1.425vcore
Yin
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Samsung 850 500gigs Samsung 840  2 PNY SSD 240gig Switech H220x 
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Yin
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Hard DriveHard DriveHard DriveCooling
Samsung 850 500gigs Samsung 840  2 PNY SSD 240gig Switech H220x 
OSMonitorKeyboardPower
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post #9 of 11
lol mine is reading at 1.52 at 3.6ghz, I just cant get it stable at lower vcore though.
Hathor
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Hathor
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post #10 of 11
well when i had my e6750 i could hit 3.2 ghz at stock voltage (1.35 volts)and used 8X multiplier with 400FSB and set the RAM voltage to 2.1v for my Crucial Ballistix. NB was set to 1.41v and SB was left at 1.5v (stock voltage).

edit: i hit 3.56ghz with 1.45vcore and 445FSB.
MIVE
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