Overclocking troubles - C2D 4300

[CPSCCPSC]

Hi Guys,

I have just got my new power supply and with my new rig I am ready to overclock my 4300. Before I started the OC guide, I tried to see how high it would go without raising the core voltage, so i got to about 2.75ghz on stock voltage. I then followed the overclocking guide, upping my core voltage, raising the fsb, turning off a whole lot of unnecessary functions and rebooted. From there, it would boot to windows but it would not run stably. I could run orthos for about 15 minutes while doing other stuff on my PC, but programs would crash and then the system would eventually restart. I tried raising the voltage a little and dropping the fsb a little and it became a small bit more stable but not much more. System specs as follows -

Asus p5b-e plus
c2d 4300
gskill 2GB PC2-6400 CL 4-4-3-5
xfx 7950
corsair HX 520 power

The only thing I could think of would be the mobo as this was highlighted on the overclocking guide as not being recommended comparatively to the p5b0e deluxe.

Anyone got any suggestions of where to go from here? :? 8O :?

 

[TonyStark]

Is the memory running at stock? What is your current FSB, and vCore?

 

[CPSCCPSC]

Memory is running at stock. When overclocking, I dropped it down to 533 mhz so it would stay at 1:1. Timings are set manually to factory specs (4-4-3-5). When overclocking as per the overclocking guide, vcore set to 1.4.

 

[AdamBomb42]

Give us some screen shots of your CPUZ please.

 

[CPSCCPSC]

Screen shots as follows







I did notice one thing though, that the core voltage was not at what I had set it to in the BIOS. This did increase though when there was more effort put on the CPU (such as a run in prime95 or orthos).

Since the overclocking guide does not include the overclocking of 4300s, do you guys reckon I should just try upping the voltage til stable? At this stage Im just not sure how high I should go.

 

[Viceras]

Don't up your voltage thats not the problem, you need to make sure you have disabled everything that can be disabled because the E4300 will drop core clock and voltage when the processor isnt loaded. So look in your `Advanced Bios Settings`and disable TM2, EIST, C1E anything like that basically these commands set your processor to 6 x 333 when idle and 9 x 333 when loaded.

You can push this processor hard on stock settings. one other thing I noticed was that your memory timings arent right you said your settings at 533 (270) are 4 4 3 5 But! You're running the memory at 667 (333) this could be a factor in an unstable system.

Without being there i'd say you're pushing your ram, set the default values for your ram at 667 (333). Make sure you run memtest86+ for a good 7 cycles (overnight) once you start tightening the timings. Once you've done the above, start the guide again.

Hope this helps

Vic.

 

[AdamBomb42]

What is your memory voltage at?

 

[CPSCCPSC]

Thanks heaps for the feedback guys. Ill check the extra settings in the bios tonight to try and disable anything I havent already to do with allowing it to drop the multiplier.

To Viceras - Sorry, I didnt refer to the memory timings correctly. When I dropped the fsb, I dropped the memory timings so it was 1:1. From there, when I lifted the fsb, my bios automatically adjusted and kept it at 1:1. So it is running at the correct memory speed at the moment (667mhz).

To AdamBomb42 - My memory information states to keep the voltage between 2.0~2.1V. I have tried it with 2.0v, 2.05 and 2.1V. No real difference has been seen.

 

[Viceras]

No worries, however when I say timings I don't mean MHz I mean your CAS# Latency, RAS# to CAS# Delay, RAS# Precharge and cycle time. If these are all what they should be then you've most likely missed something in advanced bios settings EIST Halt or something like it.