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First time overclock E8500

post #1 of 12
Thread Starter 
Hi, I have a intel E8500 3.16 core 2 duo with a gigabyte GA-EP45T-UD3P mobo. I have 8 gig of crucial ballistix DDR3 10600 ram.

I'd trying to overclock to 3.50GHz, so I set the FSB to 369 to get the right multiplier but it increases my ram speed from the default 1333 to 14 something. The computer posts but windows won't start with these settings.

The memory latency from new egg says 7-7-7-24 but its defaulted to 9-9-9-24 in the bios.

Can anyone point me in the right direction where to go from here??

Thank you so much!
post #2 of 12
Under the same menu where you adjust your fsb you need to go to the DRAM performance control and manually adjust your mems according to the stock settings you mentioned.
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post #3 of 12
Windows does not start, BSOD?

What are you voltages for DRAM, vCore etc.?
post #4 of 12
You need to manually change the following:

1) Performance enhance = standard
2) Extreme memory profile = disabled (but I personally set mine to profile 1 (800Mhz)
3) MCH freq. latch = 400 Mhz (if it has options to pick 666 do so) - since your rams are 1333
4) Choose an approriate system memory multiplier that does not exceed your ram ratings - try setting it initially to 1:1 ratio to ensure your rams are not getting in the way of your OC

These boards are very finicky with RAM and majority of the time the reason it won't boot is because of the RAMS settings.
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post #5 of 12
Thread Starter 
Thanks Mark. Ok I changed the MCH freq latch to 400, it didnt have an option for 666. By changing it to 400 it gave me 3 choice of multipliers. I picked 4D and that set the memory frequency to 1230. so i cant quite get it to 1333. Does this mean I'm losing a little memory speed in order to overclock?

The computer did boot though as i'm running it now under those current settings.

I downloaded CPU-Z and the core clock keeps changing between 3504.4 x 9.5 to 2214.0 x 6 every few seconds. is this normal or is something wrong?
Edited by grasshopper22 - 2/8/11 at 7:03am
post #6 of 12
Thread Starter 
Can anyone tell me safe cpu temps for the E8500. I have it overclocked about 10% to 3.5 GHz.

Playing Just Cause 2 with max settings the core temps are going between 50-55C, idle im at 41C. The Vcore1: is 1.06V and Vcore2 is 1.74V

and i have a evga GTX 570 that's getting up to about 70-75C. With the fan speed at 77% in EVGA precision.
post #7 of 12
you should disable speedstep in your bios to keep your multiplier at 9.5. You may also be able to get a higher oc with that disabled as well. Max temps should be below 90c.
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post #8 of 12
Vcore1 and VCore2? What do you mean? There should not be any voltage in there that's 1.74!

Set your ram to the multiple that gives the LOWEST speed. As you raise FSB, the RAM speed will increase. AFTER you get your fastest stable CPU overclock, you'll play with the multiple to get the fastest stable RAM speed.
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post #9 of 12
Thread Starter 
I don't see anything called speedstep in my bios. Can you please clarify?
post #10 of 12
Speedstep will idle the processor when it's not being fully utilized. It's usually under CPU options in the BIOS. You can also change the RAM to unlinked and your OC won't touch your RAM frequencies.

EDIT: Here is a guide that will explain how to overcliock a Core 2. It's not for your exact mobo but it should be similar.

http://www.overclock.net/intel-mothe...ing-guide.html
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