New Core2Duo Overclocking Rig (Pics to come)

[kent1146]

Lol, wow. AlmostFamous... is that you???

Yes, screenshots from Windows System Properties, CPU-Z, PCWizard07, and successful Prime95 runs can be provided to prove a stable 3.5Ghz overclock. I'll do these tomorrow once I get back home after being on the road for business. Many other people have reported overclocks in the 3.5Ghz-3.6Ghz range, and beyond... not everyone, but a large enough portion of the community to show that yes, it *IS* possible.
http://www.hardforum.com/showthread.php?t=1183692

edit: I mean 3.5Ghz overclock. I posted earlier in this thread that I went with a 3.5Ghz overclock, for stability.

[sellout]

I settled on an overclock of 3.5Ghz at 1.5V to be stable, and I have temps of around 41C idle, 53C under stress.

This is the other thing i question. most of the windows screenshots i've seen are bursting through 65C or 70C under stress at the same voltage (which is the primary heat generator) - the fact that you say you ran your benchmark, then rebooted then took the screenshot from the bios means the computer had more than enough time to cool down - i know mine drops 5c to 10c in just a few seconds after i stop a benchmark or game.

[rabidmoose171]

Holy crap, thats the worst application of AS5 I have ever seen.


And damnit, I knew I should've put a patent on the rubber band drive suspension Been doing it with vacuum cleaner bands for years.

[kent1146]

Yeah, it was a pretty shoddy job of AS5.

It didn't occur to me until I got to the lapping attempt that I should do things like... look up the instructions for how to apply AS5.

The new application of AS5 uses the "thin nline down the middle" method.

[Colossus]

Holy crap, thats the worst application of AS5 I have ever seen.


And damnit, I knew I should've put a patent on the rubber band drive suspension Been doing it with vacuum cleaner bands for years.

You beat me to it!!!!

I was going to say that the AS5 application was terrible and quite thick.

But I agree with Sellout with regrads to the heat. Run a program that stresses both cores at the same time and that 54c will be 70c :P

Use ORTHOS or something similiar for hours, even SUPERPI is not a good way to test stability.

[rimmerchant]

I want to use a program to do a stress test my ram and cpu.

what is a good program for that?

[sellout]

I want to use a program to do a stress test my ram and cpu.

what is a good program for that?

Fire up prime95 for about 8 hours. if your system can handle that, it's stable. you can also try an overnight cpu burn-in from Sandra....but prime95 is much more punnishing.

[terramir]

Ok, i totally have to call you on this - i find it very difficult to believe that you managed to achieve a 1.4 ghz overclock on a relatively base model core2 with air cooling - especially when i consider that the highest overclocks i've seen in a REPUTABLE publication are at 3.4ghz with WATER COOLING and are STILL unstable under certain benchmarks. So please, backup your claims with actual WINDOWS screenshots of some form of utility like ntune or speedfan or something that shows you're not completely full of crap. digital pictures of your bios prove NOTHING.

Huh I know I've seen 3.6 to 4 ghz with base models with windows pictures of orthos for like 4 to 6 hours. and my e4300 can do 5 hours of orthos @ 2.7 @ 1.12 V core so @ stock I assume with decent cooling my chip should at least do 3.3 if I up the voltage a bit maybe 3.5 But I need a decent MB and well a pci express vidcard (cause I'm stuck with this crappy 4coredual-vsta till I can afford both of that). So I think your misinformed the c2d's rock
my .02
terramir

[3Designer]

You beat me to it!!!!

I was going to say that the AS5 application was terrible and quite thick.

But I agree with Sellout with regrads to the heat. Run a program that stresses both cores at the same time and that 54c will be 70c :P

Use ORTHOS or something similiar for hours, even SUPERPI is not a good way to test stability.

I agree.

kent1146, nice build and nice overclock. I just finished mine as well and did moderate OC with stock cooling to get just slightly above X6800 territory, which was easily done. Not trying to rag on you but that's no way to measure temperature. By shutting the system down and rebooting you allow the system to cool a lot (as in 10-12 degrees easy). That happens within seconds of stopping a demanding process. Fire up a monitor software and watch it climb while running ORTHOS, or two instances of Prime95. I believe at that voltage and clock speed it will go higher than 53C even with the excellent cooler you have.

For the record my modest but stable overclock specs:

• C2D E6600 @ 3.04GHz (1.375V core voltage) 338MHz FSB x9 CPU multiplier
• Stock cooling
• 2x1GB G.SKILL DDR2 800 (PC2 6400) @ 900MHz, timing 4-4-3-6 (2T) 2.0V - Memory clock was unlinked from CPU
• EVGA GeForce 8800GTS @ 660MHz core & 1000MHz Mem
• Around 24,300 MIPS and 19,500 MFLOPS in Sandra XI Lite (Beats stock X6800 reference figures)
• 3DMark2006 score of 11060

I did not go higher because of the stock cooling. My system with these settings stays around 41-43C idle and 61-63C under 100% load, depending on ambient. Frankly, I think that's kinda high (for a Core 2 Duo anyway) and I did not want to risk doing damage.

[kent1146]

Ok, i totally have to call you on this - i find it very difficult to believe that you managed to achieve a 1.4 ghz overclock on a relatively base model core2 with air cooling - especially when i consider that the highest overclocks i've seen in a REPUTABLE publication are at 3.4ghz with WATER COOLING and are STILL unstable under certain benchmarks. So please, backup your claims with actual WINDOWS screenshots of some form of utility like ntune or speedfan or something that shows you're not completely full of crap. digital pictures of your bios prove NOTHING.

Pic of a burn-in that ran overnight for 11:45. 3.5Ghz @ 1.5V.

This is after all of the mods and tweaks I performed after the initial build of the system... new 600W PSU, lapped the CPU, new application of AS5 (thin line down middle of CPU, not the peanut-butter-jelly-sandwich approach of applying it).

[terramir]

kent very nice OC but next time use orthos so ppl can tell how long you were testing under 2 1/2 hours can't really be considered stable yet. just to let you know for the future. BTW what's the diff btw. the 6420 and the 6400 ? I just got a lowly E4300 @2700 MHZ (MB FSB Limit ) But @ 1.136 Vcore stable when I get a better MB maybe 3.3 on stock maybe more
terramir

[amd_freak]

I didn't do too bad with my Conroe.

So far, it's 5hrs+ Orthos stable--3.2Ghz (8x400) @ 1.368V.

I want to get it to 3.4Ghz (8*425) some day.