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i5-750 @ 5Ghz on Dice - my first extreme cooling

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post #21 of 41 (permalink) Old 05-30-2013, 02:00 AM
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I enjoyed the pics thoroughly, good job. biggrin.gif
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post #22 of 41 (permalink) Old 05-30-2013, 02:29 AM - Thread Starter
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I enjoyed the pics thoroughly, good job. biggrin.gif

thanks, I had a lot of fun thumb.gif
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post #23 of 41 (permalink) Old 05-30-2013, 03:12 AM - Thread Starter
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Nice and clean. Insulation removed. The big blue ball - it will be re-used one day wink.gif

Please note - I matched perfectly color scheme of the mobo wink.gif

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post #24 of 41 (permalink) Old 05-30-2013, 04:25 AM - Thread Starter
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post #25 of 41 (permalink) Old 05-30-2013, 05:49 AM
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Nice, one think I found when overclocking my bclk (i5 760) was that I could use 200, go to 233 stable (no values inbetween) or 266 stable (again, no values inbetween)

But, nice job on the overclock! looks like fun!
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post #26 of 41 (permalink) Old 05-30-2013, 06:17 AM
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Originally Posted by Gleniu View Post

I spent many hours on air and water playing just with BCLK thumb.gif The highest one I ever achieved was 239. I don't have much experience, but my impression was that the stuff behaves differently in sub-zero - I had to use different levels and combination of voltages for high OC (mainly Vcore and QPI). Close to 5GHz they had precise values - anything slightly higher or lower didn't work.

My ideas - please tell me what you think:

1. I could not figure out 24x + turbo + 1 or 2 cores combo - I can set it, but I can not get any high OC (most of results better than mine were on 1 or 2 cores only).
2. Windows - I just used fresh Windows 7 installation - I had no issues with starting in BIOS @5GHz, so I imagine that super light version of windows 7 or even better XP could help.
3. I had strange feeling that lowering temps may help biggrin.gif LN LOL?


PCI-E - I will double check - but I'm pretty sure it's not like that on P55 platform.

Generally, you should be able to set two cores, make sure turbo is turned on, and then set the 24x multi. Were you just having difficulty getting high clocks or were you unable to get the multiplier to take effect at all?

Generally what I do when pushing for CPU-Z is to set the multiplier that I want but a lower BCLK. I then raise it in Windows using the overclocking application that came with the motherboard.

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post #27 of 41 (permalink) Old 05-30-2013, 09:22 AM - Thread Starter
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Quote:
Originally Posted by xxbassplayerxx View Post

Generally, you should be able to set two cores, make sure turbo is turned on, and then set the 24x multi. Were you just having difficulty getting high clocks or were you unable to get the multiplier to take effect at all?

The former. I can use 24 multi with 2 or 1 cores.
Quote:
Originally Posted by xxbassplayerxx View Post


Generally what I do when pushing for CPU-Z is to set the multiplier that I want but a lower BCLK. I then raise it in Windows using the overclocking application that came with the motherboard.

Sounds good to me thumb.gif I saw this idea in action in some older configs with SetFSB tool. I will check it for sure thumb.gif
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post #28 of 41 (permalink) Old 05-30-2013, 09:37 AM
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Can you set the 23x multi? With bloomfield, the odd numbered multipliers gave the best results.

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post #29 of 41 (permalink) Old 05-30-2013, 11:49 AM
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Doing it wrong....you have to crush the dice.Ofc i did several sessions b4 someone told me this sozo.gif
I use the bottom of a Clorox bottle and a 6 lb sledge.The idea is to have as litlle air as possible in between the cold stuff.I like that pot! thumb.gifthumb.gif
As for the back..I LET the back..about 1/2 the board.
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post #30 of 41 (permalink) Old 05-31-2013, 11:43 AM - Thread Starter
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Quote:
Originally Posted by Schmuckley View Post

Doing it wrong....you have to crush the dice.Ofc i did several sessions b4 someone told me this sozo.gif
I use the bottom of a Clorox bottle and a 6 lb sledge.The idea is to have as litlle air as possible in between the cold stuff.I like that pot! thumb.gifthumb.gif
As for the back..I LET the back..about 1/2 the board.


Thanks for letting me now - I will crush for my next session thumb.gif There was not much air, as acetone was 'boiling' quite heavily, I wonder what is temperature delta between crushed and non-crushed dice. Unfortunately I don't have thermometer yet redface.gif
For back I used a few layers of paper towel + thick K-flex on all board area - I saw this approach recommended in various places and decided to follow. smile.gif
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