E8400/E8500 overclocking thread!

[Mac Daddy]

Originally Posted by Chai

I think I will settle down at 4.1GHz, with 1.25V, RAM running at just 1.9V! This is a very fast and cool running PC! I love this processor, but I wish the RAM could do better than 455MHz...

My ram will do close to 600Mhz easy @ the rated 2.1V and my mobo is fine wish my CPU had a x9 multiplier or even x8

[Chai]

Originally Posted by Mac Daddy

My ram will do close to 600Mhz easy @ the rated 2.1V and my mobo is fine wish my CPU had a x9 multiplier or even x8

I bought cheap RAM, but it's a good excuse to keep the clockspeed down. My room is so much cooler now! I'm enjoying it!

[ZuePhok]

Originally Posted by Chai

I think I will settle down at 4.1GHz, with 1.25V, RAM running at just 1.9V! This is a very fast and cool running PC! I love this processor, but I wish the RAM could do better than 455MHz...

yee, greedy 4.1Ghz is fast enough la!

[Chai]

Originally Posted by ZuePhok

yee, greedy 4.1Ghz is fast enough la!

Damn, not stable at 455MHz, now settling at 450MHz.

[Max_87]

Originally Posted by ZuePhok

IMO, 2.275 is certainly very high. best is to keep it below 2.1v. Im not comfortable with anything above 2.2v but that's personal preference.

I've tested several hyperX modules that are rated at 2.3-2.35v.
they just got too hot to be reliable for 24/7 usage, even with a small stock P4 fan on them. superPI failed after 10-15mins.
I also have a pair of Adata extreme edition that failed to work after 6 months. 2.2v, 1000Mhz rating. they must have cooked by the voltage.
but then again, RAM is cheap nowadays. you can probably grab a pair for "backup"

most asus and gigabyte P35, X38/X48 boards should have no trouble running a dual core at >500fsb. in fact for a dual core you don't really need to increase the chipset voltage unless you are running like >= 4gb configuration. for quad core it's a different story though.

I'm back to 2.2v, even better stability compared to 2.275v 2.2v is the voltage that I always used to run at 434MHz when I was using my E6850. Currently it runs fine at 467MHz with the same voltage.

I was pretty close to getting the modules to run at 478MHz, but prime95 blend test failed after 5 hours. Maybe I will try play around with the timings and see if it helps any. Currently still running at stock timings (5-5-5-15).

Looks like 4.3GHz is almost the highest this processor can go without needing more than 1.4v.

[Mac Daddy]

Originally Posted by Chai

I bought cheap RAM, but it's a good excuse to keep the clockspeed down. My room is so much cooler now! I'm enjoying it!

Hee hee

Well I am quite sure my issue is the E6550 I have been doing some research and it seems to be the luck of the draw with that one. Anything over 7x435 here starts to stress my cache on the CPU. Its not temps the CPU and cores usually run around 45C under load. Running the Everest stability test everything stays green right up to 7x442 until I include cache in the test it almost immediately goes red. XP runs stable up to 7x440 Vista X64 starts to get flaky around 7x438.

Look at this article and you will see one of these E6550's is acting almost exactly the same as mine

intel core 2 duo e6550 review and overclocking

[The_YongGrand]

Awesome!

How about the E7200? It's cheap too... wish I had one but I don't have a good gfx card to pair up with it, and what else, I need a motherboard that supports that too!

[Max_87]

Not as good according to ZuePhok, needs high voltage for 4GHz.

[Chai]

Seems like I needed more voltage to run at 4ghz. 1.27V is not too bad, it's only slightly more power consuming than E6850 at stock volt running at 3.4GHz only!

[Max_87]

Mine need 1.25v ever since I turned on C1E and flashed new mainboard bios. For 4.2GHz, it requires 1.34v now instead of 1.32~1.33v. Not sure which one is the reason why it needs an extra 0.01v now.