E8400 to 3.6GHz

Forum CPU & Components : CPUs E8400 to 3.6GHz

ASUS P5Q Pro, E8400, 2x2GB G. Skill Pi Black DDR2-800 4-4-4-12, Arctic Cooling Freezer Pro 7

Ok, so I changed the following in my BIOS.
FSB-400x9=3.6
CPU Voltage-1.225
PCIE Spread Spectrum-Disabled
CPU Spread Spectrum-Disabled
C1E-Disabled
Speedstep-Disabled

I also have manually set my RAM timings to 4-4-4-12, and voltage to 1.9.
The thing I'm wondering though is that if the CPU voltage looks ok. I've been running Prime95 for 3:30 now and will run it until tomorrow morning. The CPU temp is at ~50-52 now which is decent. If you have anything advice to throw on voltage or anything else please do.

Reply to bigballer044

I just change my multiplier to 400x9 and the RAM voltage to 2.0 and leave everything else at auto with C1E and Speedstep enabled.

Reply to Mousemonkey

Why change the timing back? It's 4-4-4-12 memory. And should I stop prime95 to change it or wait till tomorrow?

Message quoted 1 times
Message edited by bigballer044 on 06-06-2009 at 02:32:31 AM

Reply to bigballer044

Well, I'm new to OC'ing and I'm just going for 3.6 atm. How will I know if it is stable after I stop Prim95 tomorrow? If it doesn't crash or what? Also does that voltage look too high/low to anyone? I kinda just threw 1 out there to see if it worked.

Message edited by bigballer044 on 06-06-2009 at 02:38:32 AM

Reply to bigballer044

Set timings to 4-4-4-12 and dram voltage to 2.0v and cpu voltage to 1.300, set dram:fsb 1:1 then raise fsb to 400.
Everything should run stable. Did it this way on the Gigabyte EP45-UD3P and its running stably ever since in a friends rig after running prime.

Reply to cybot_x1024

Isn't 1.3 a bit high for a 3.6 OC? I thought my 1.225 was high. Also I'm pretty sure RAM is supposed to be 1.9 for my RAM.

Reply to bigballer044

it depends on the vdroop. I the vdroop is not big you could adjust till you get the lowest stable voltage the proc runs at. Besides you are using a different mobo, the P5Q Pro.

Reply to cybot_x1024

my e8400 needs 1.33 for 4ghz to be stable

Reply to christop

Well, if my E8400 w/ 1.225V runs prime95 for 18 hrs+ (I plan to stop it in the morning after I wake up) and doesn't BSOD, does that mean that it's stable at that voltage?

Reply to bigballer044

there are two processors in question here the E0 stepping and the C0 stepping.
Which one do you have?

Reply to cybot_x1024

E0 is what it says for revision on CPU-Z.

Message edited by bigballer044 on 06-06-2009 at 04:24:39 AM

Reply to bigballer044

The E0 is a much newer stepping which does not require as much voltage bump as the C0. I used the C0 therefore the 1.3v. Your 1.225v should be fine if it breaks the 24hrs barrier.

Reply to cybot_x1024

Thanks for the reply cybot. I'll post back tomorrow around 4 central (24 hour mark) to post the results ^^

Reply to bigballer044

Any time bigballer044
You are welcome.

Reply to cybot_x1024

Keep the ram setting at 1.90V in bios at 4-4-4-12 timings. Make sure your NB Voltages are at 1.33v-1.35v. Also what is your VID? Use Core Temp to check it. I have the E8400 E0 stepping also and I need to have my voltage at 1.275V in order to run it at 3.6Ghz. Don't forget that every cpu is different. Also I would use LinX for 25 passes and then prime 95 for about 6 hours.

Reply to ragsters

Ok, it says my VID is 1.25. I left the NB as Auto, is that ok?

Is it a bad thing that I set my CPU Voltage to less than my VID? D:

Message edited by bigballer044 on 06-06-2009 at 08:47:31 AM

Reply to bigballer044

I wish I had yur CPU. My e8400 needs 1.32 v for 3.6 Ghz and 1. 37 v for 4.0 Ghz.
It has the AC Freezer Pro 7 but runs hotter than yours reaching in the low 60s C under full load.

Reply to hundredislandsboy

Ok, Prime95 Small FFTs- Test ran 24 Hours, 1 Minutes - 0 Errors, 0 Warnings. The average temperature I saw was probably ~50C and highest 53C.

I rebooted and ran 3DMark06 without problems, and got (GTS 250 Vid Card)

Total: 14,928
SM 2.0: 7024
SM 3.0: 6828
CPU: 3352

About 1.4k higher than before OC.

Guess it's stable for gaming/everyday use now huh?

Reply to bigballer044

I use a GTS 250. Make sure you set the fan to at least 80% before a session of Crysis or CoD4 or it will go past 80 C.

Reply to hundredislandsboy

Should I try and lower my voltage? Or does 1.225 look ok if it runs stable?

Reply to bigballer044

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