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Old August 9, 2009, 05:08 PM
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Default CPU and cpu block questions

I have 2 questions please..

First one, if I lap my E8400 and use it with an unlapped cpu block, will it cause an issue..

Secondly, would you personally cool an E8400, I have the C0 stepping, so doesn't clock all that well either..

Thanks.
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Old August 9, 2009, 06:26 PM
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Don't lap that Apogee GT. Unless you've got a really early model, it should come pre-bowed from the factory. Even when the CPU lapped, the bowing still works to focus pressure on the center of the CPU, where the hottest parts are, so it's still good.

As for the CPU - how's your overclocking going? Any idea what your limiting factor is? If you're running out of temperature headroom, than maybe some cooling improvements could help. But if you've hit the limits of what voltage you're willing to use, it's doubtful that a couple more degrees are going to make a huge difference.
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Old August 9, 2009, 06:42 PM
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Well MpG.. Thanks, I forgot to mention that I have a D-Tek Fuzion v1 that I bought couple months back, so gonna be switching to that. Yea I have or never will lap a cpu block, I was going to lap my e8400, as long as it still gives good contact to the cou block, i'll be fine..

For the clocking, I think last time I had my cpu volt somewhere between 1.35-1.4v and I hit 4.0 ghz.. as for temps. I wish I could remember, but it was somewhere in the high 40s C on load I believe...

I've seen lots of forums with users commenting that the C0 stepping didn't go much more than 4.1 or 4.2ghz.. That's what I've been thinking, nowadays with lots of good air cooler than can match performance to small limitive water cooling setup.. Though I have a MCR220 w/d-tek block, mcp655, mcres micro sitting around which could be put to good use, or on the other hand, could sell and get myself some useful cash..
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Old August 9, 2009, 07:07 PM
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Well, only you can decide if it's worth it to fire a block back onto that bad boy. My E8400 is @ 4GHz (1.26v), I think I top out around 48-49 load; the i45 is a fantastic board, just takes a bit of tinkering to be able to drop the VCore down substantially. Of course with the economy the way it is...useful cash is something that can't be ignored.
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Old August 9, 2009, 07:56 PM
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Quote:
Originally Posted by Neolithium_Wpg View Post
Well, only you can decide if it's worth it to fire a block back onto that bad boy. My E8400 is @ 4GHz (1.26v), I think I top out around 48-49 load; the i45 is a fantastic board, just takes a bit of tinkering to be able to drop the VCore down substantially. Of course with the economy the way it is...useful cash is something that can't be ignored.
Wow you got 4GHZ with only 1.26v? with my asus board i need 1.4v to get a stable 4GHZ .
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Last edited by Dar_ell; August 9, 2009 at 08:02 PM.
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Old August 9, 2009, 10:28 PM
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Yep, took a decent chunk of work to get everything nice and low. Prime95 runs around 7 degrees cooler of course, but I just felt like firing up IBT for the purposes of the screenshot since I didn't have any desire to hunt through my flash drive for my overnight prime stability check.

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Old August 9, 2009, 10:33 PM
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Oh off course the E0 stepping.. explains it all.. But nice Neo.
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Old August 10, 2009, 01:14 AM
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Quote:
Originally Posted by Neolithium_Wpg View Post
Yep, took a decent chunk of work to get everything nice and low. Prime95 runs around 7 degrees cooler of course, but I just felt like firing up IBT for the purposes of the screenshot since I didn't have any desire to hunt through my flash drive for my overnight prime stability check.

Very nice, just finished a build for a friend. E8400 @ 4.0 on 1.28ghz, I didn't really bother to check about lowering the voltage as it was happy there. It hit about 57 load on air. Yet my E8500 takes 1.3v to get 3.8ghz and under water runs hotter. :(
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