Get my E6400 to 3.6 ghz!

[grant_77]

I have run into a brick wall.

Current Settings

CPU Host 430 x 8 = 3440 mhz Attempted 440 x 8 = 3520 mhz
Memory Mulptiplier = 2x = 860 mhz ram Attempted 880 mhz ram
DIMM Overclock = +0.2v Upped to +0.3v
MCH = +0.1v Upped to +0.2v
CPU Volts = 1.45 volts Upped to +1.475volts
Running at 50 Celcius 100% load

Posted once and got the blue screen of death, had to reset cmos.

I upped all the voltages individually to test, then upped all at once. Would not post. It will run 3480 mhz, but not stable for long periods.

I have noticed there is a pcie voltage and a fsb voltage.

I am thinking since it will not post maybe i should up the pcie voltage +0.1?

Or is it because the FSB is running to high, the voltage needs upped?

Or is it none of those. Any suggestions. I don't want to keep trying all night because I dont think im close because its not even posting. Usually if its close it will post and crash later.

Does anyone have my same setup with any suggestions on how to get me to 3.6 ghz?

Thank you.

 

[NotAPimecone]

What are you doing with your memory timings when you go that high? It's the one thing you haven't mentioned yet.

Also, what are you using to measure temps? 50C seems pretty chilly at that voltage.

 

[grant_77]

Im Using: OCZ Platinum XTC PC2-6400 2GB 2X1GB DDR2-800 CL4-5-4-15 240PIN DIMM Dual Channel Memory Kit

Its overclocked to 860 mhz at the moment.

I dont think my motherboard has controls for the memory timings, could that be my problem, should I have to loosen them?

Do you know if theres anyway to adjust the memory timgings for the gigabyte 965p ds3?

To gauge temperature im using Core Temp.exe, I found it from someone elses thread for measuring accurate core temps.

Yeah it is pretty chilly, with the antec sonata it was hanging around 60-62 C, and since I put it in this btx case with the 4 fans running on medium each its been running around 49-51 C so theres actually been about a 10C temperature drop, alot more airflow I guess. This case is awesome.

I was considering getting a tuniq tower and try to get it from 3.6-3.8 but if ive hit a wall at 3.4 and i cant break it im just going to stick with the blue orb, its working great.

 

[NotAPimecone]

You hit CTRL+F1 on the main BIOS screen to show hidden options in the subscreens (most importantly the M.I.T. area for the DS3 and other Gigabyte boards). You usually have to loosen timings if you want to run RAM much faster than spec.

As for the temps, I wish mine were that low (they're around 50 at only 1.325V). I've tried similar voltages with my CNPS9700, and get readings approaching 70C in CoreTemp. However, I did notice a kind of nasty looking imperfection on the contact surface of my 9700, so that could be hurting performance.

 

[grant_77]

I upped my memory timings to 5 - 5 - 5 - 15, i upped the voltage to +.4 and i upped the mch to +.2v, i upped the fsb to +.1 and i upped the cpu to 1.5 volts.

It seems like theres no overclocking room left on this particular processor.

I guess im goingto back it down to 3.4 ghz, it seems to be very stable, i guess a 60% overclock is still acceptable at about 51 Celcius.

Thanks for your help.

 

[derek2006]

On the DS3 and E6400 thats about where my limit is. 3.6Ghz is not stable for extended periods no matter what voltage applied. I don't think you can get there. 3.4ghz is pretty good though.

 

[bydesign]

Those temps at load seem off for OC cpu with up voltage. I have a ducted system and those are about the same as my E6600 at stock setting.

 

[grant_77]

Yeah, I was really surprised too.

I found the arctic silver 5 helped for 2-4 degrees, but the big difference was this case, having the exhaust above and behind it really pushes the air through the cooling fins.

The Heatsink is 869g of alumium so thats about 2 lbs, and i disabled the fan controls so its running at max, 1700 rpm which is still only 17dba, it works fantastically.

It runs about 48 C at 22C ambient, and 50 C at 23 ambient, at 52-54 at 24 ambient.

Im actually really impressed how well that heat sink works. Im planning on using it when i build a home theatre pc. The fan blades are curved so the air comes out the entire height of the heatsink and pushes air onto the ram and Northbridge. Its low heigh and large mass i think would be perfect for overclocking a hometheatre pc if anyone wants, although in a confined space you may have to consider keeping your c2d from 3.0-3.2 ghz.