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Overclocking Intel Core 2 Duo E7400

post #1 of 11
Thread Starter 
I have successfully overclocked my Intel Core 2 Duo E7400 from 2.8GHz to 3.15GHz (dxdiag says 3.2GHz) with no problems at all. Its on a Gigabyte GA-945GCM-S2L. I am using EasyTune5 (made by Gigabyte) and the program says I can go higher but if I put it higher the program still says the clock speed is 3.15Ghz anyway I can go higher?

I am downloading EasyTune6 now.
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post #2 of 11
You would probably have a much easier time OC'ing your 7400 if you did it through your bios instead of using an OC'ing program. I have a E7400 running at 3.6 GHZ right now, very stable as well, all I did was up my FSB to 400 and set my multi to 9, had to raise the v-core voltage to 1.26. But if you cant do it through your bios, im guessing the program you are using might be misreading your actual clock speed? try CPU-Z it usually fairly accurate.
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XaphanII
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post #3 of 11
Edit - Just realised your MoBo is completly different from mine =p your Mobo may or may not limit your OC depending on it's max FSB <.<
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post #4 of 11
Thread Starter 
I just got it up to 3.41GHz via BIOS (FSB @ 325). It seems that I can't go near having the FSB at 400 (CPU @ 3.9GHz) as it will disable the custom FSB speed and go back to default.
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post #5 of 11
hmm that might be the limit to how high you can set your FSB, the only other thing you could do is raise your multi unless you still have it at 10.5 =\\ 3.4 GHZ isnt bad though =)
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post #6 of 11
4.09ghz on 1.3625v in BIOS. Pretty sure it can go higher but I have crap ram
    
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post #7 of 11
Quote:
Originally Posted by crashnburn_819 View Post
4.09ghz on 1.3625v in BIOS. Pretty sure it can go higher but I have crap ram
That's actually pretty amazing. But it's no surprise since you have an amazing motherboard that was practically designed for overclocking. But the motherboard we're working with here is this one:

GA-945GCM-S2L

Based on Gigabyte's product page for this, it doesn't look like it's an overclocker's motherboard. So, I honestly don't think we should expect more than approximately 3.5 GHz from the CPU in this rig. Not only that, but based on the lack of the information regarding a CPU cooler, I'm guessing it's Intel's stock CPU cooler. And if that's true, then we definitely shouldn't expect more than a 750 Mhz to 800 MHz overclock at the most. A 750 MHz overclock would get this CPU to 3.55 GHz. It may be possible to get more, but it shouldn't be expected. That can only lead to disappointment and discontentment.

But, it is true that overclocking should still be done through the BIOS when it's possible. And I am pretty sure that it's possible with this motherboard. So, what needs to be done is that EasyTune thing needs to be uninstalled so that true overclocking can be achieved through the BIOS. But again, try to avoid expecting more than a 750-800 MHz increase.
    
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post #8 of 11
Thread Starter 
I have set it to 3.6GHz (FSB @ 355) and thats what I am sticking to. BTW the box for the motherboard says "FSB 1333 Supported By OC".

Next thing to overclock is my video card.
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post #9 of 11
Quote:
Originally Posted by MLVD View Post
I have set it to 3.6GHz (FSB @ 355) and thats what I am sticking to. BTW the box for the motherboard says "FSB 1333 Supported By OC".

Next thing to overclock is my video card.
But it doesn't necessarily mean that this is an overclocker's motherboard. But hey, as long as the load temps don't exceed 70-75°C (according to Real Temp) while running the Small FFTs stress test using Orthos, then it should stay nice and stable. That is, provided the overclock is stable. And at the minimum, it's important to get the overclock stable enough to pass a 12-hour Small FFTs stress test. Be aware that the default test when you open Orthos is the Blend test, so be sure to change the selection before beginning the test.

Anyway, I can see that you already got an 800 MHz overclock out of this. Now run at least a 10-15 minute Small FFTs stress test to determine maximum temps. If they don't exceed like 70-75°C, then you know it's cool enough to set the goal of making the overclock stable enough to pass a 12-hour Small FFTs stress test.

If this isn't done, then you can and likely will be frustrated by problems due to instability.

By the way, I am curious: what did you set the CPUs core voltage to?
    
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Thermaltake Frio Win 7 Home Premium x64 SP1 Retail Samsung 2253BW (1680 x 1050) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
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250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) Samsung SH-S243N 24x DVD Burner Samsung SH-S203N 20X DVD Burner 
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Thermaltake Frio Win 7 Home Premium x64 SP1 Retail Samsung 2253BW (1680 x 1050) Filco Majestouch 104-key Cherry MX Blues w/NKRO 
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Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Microsoft Intellimouse Optical (not 1.1A) Basic, but premium round 
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post #10 of 11
giga say it will do 1333 so it should do 333 fsb but anything above is a bonus, the thing is you may need to go into the bos and increase voltages to the chip set too, i would also look to reduce the vcore as much as pos in the bios whilst your in there.
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