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post #81 of 157
Contact Pressure testing with DT Sniper Water Block with IB 3570k.

DT SNIPER Block


DTSCT1s.jpg


DTSCT1Papers.jpg


Used Fuji Film paper to do the test.

http://www.sensorprod.com/static/heat_sink.php

Looks like pressure is not even. Cause could be the IHS, heat sink, or bad mount.
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post #82 of 157
Bought one of these a couple of weeks ago for my gf's pc. managed to get a few nice photos of it biggrin.gif great looking waterblock.

post #83 of 157
Quote:
Originally Posted by SonDa5 View Post

Contact Pressure testing with DT Sniper Water Block with IB 3570k.

Looks like pressure is not even. Cause could be the IHS, heat sink, or bad mount.

That is nearly the perfect contact pattern/mount, I wish every block I temp tested made a contact pattern that good. You want a large bow covering the middle 3/4 or so of the IHS, the best testing blocks will have that pattern. That gives better temps than to have both IHS/block perfectly flat after tightening. Not to mention, If both are perfectly flat prior to mounting, when you tighten the block, you get lift off in the center and most pressure on edges.
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post #84 of 157
Quote:
Originally Posted by opt33 View Post

That is nearly the perfect contact pattern/mount, I wish every block I temp tested made a contact pattern that good. You want a large bow covering the middle 3/4 or so of the IHS, the best testing blocks will have that pattern. That gives better temps than to have both IHS/block perfectly flat after tightening. Not to mention, If both are perfectly flat prior to mounting, when you tighten the block, you get lift off in the center and most pressure on edges.


wow good to know.
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post #85 of 157
Quote:
Originally Posted by opt33 View Post

That is nearly the perfect contact pattern/mount, I wish every block I temp tested made a contact pattern that good. You want a large bow covering the middle 3/4 or so of the IHS, the best testing blocks will have that pattern. That gives better temps than to have both IHS/block perfectly flat after tightening. Not to mention, If both are perfectly flat prior to mounting, when you tighten the block, you get lift off in the center and most pressure on edges.

Didn't know that. Will look more into it.

The orientation of the block is not parallel with the die underneath the IHS. Should the high pressure lines be parallel with the die? I'm looking into getting a different back plate because I want the back plate to sit flush with the MB PCB.

Here is some more heat testing that I did with some Prolimatech PK-1 heat paste.

Click for higher resolution.


With about 1 hour of cure time it performed about 2C hotter than the IC Diamond but the ambient temps were a little higher. IC Diamond ambient temps were at 21C while the ambient temps for the PK-1 were at 24C.
Edited by SonDa5 - 8/26/12 at 12:52pm
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post #86 of 157
Quote:
Originally Posted by SonDa5 View Post

The orientation of the block is not parallel with the die underneath the IHS. Should the high pressure lines be parallel with the die? I'm looking into getting a different back plate because I want the back plate to sit flush with the MB PCB.

Ideally, yes. On my sup hf only makes about .5C difference to rotate block 90 deg. But having a bow vs not having a bow can make 2-3C difference, regardless of whether parallel or perpendicular to die. In fact vapors testing at skineelabs, for example on the kryos block, it was in second place on one test with a mild bowed block using default O ring, but using a fatter O ring to cause more of a bow improved the temps to first place. One of waterblock testers on xtreme had lapped the bow out of one of the blocks to more flat, and worsened temps 1-2C.

I think some of the variability in testing (one tester has particular cpu block performing better than another tester) is variability in machining block to block, ie internal channel depth and contact/bow differences, not to mention testers with mount pressure differences, IHS/cpu differences etc.
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post #87 of 157
Quote:
Originally Posted by opt33 View Post

Ideally, yes. On my sup hf only makes about .5C difference to rotate block 90 deg. But having a bow vs not having a bow can make 2-3C difference, regardless of whether parallel or perpendicular to die. In fact vapors testing at skineelabs, for example on the kryos block, it was in second place on one test with a mild bowed block using default O ring, but using a fatter O ring to cause more of a bow improved the temps to first place. One of waterblock testers on xtreme had lapped the bow out of one of the blocks to more flat, and worsened temps 1-2C.
I think some of the variability in testing (one tester has particular cpu block performing better than another tester) is variability in machining block to block, ie internal channel depth and contact/bow differences, not to mention testers with mount pressure differences, IHS/cpu differences etc.

Thanks. Waiting on some more Tygon tubing that I ordered from Sidewinder Computers and as soon as I get it I am going to reconfigure the position of the block so that the high contact pressure areas on my DT Sniper block are parallel with the 3570k die. Once I do that I will do another mount test with the contact pressure paper to see if the bow contact pressure has adjusted with the 90 degree rotation of the block.

Also the DT Sniper ships with an extra O ring but I am not sure if it is a spare or a bigger diameter to increase bow.
Edited by SonDa5 - 8/26/12 at 4:13pm
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post #88 of 157
SonDa5, the extra Oring is just a spare
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post #89 of 157
Quote:
Originally Posted by beanscene View Post

Bought one of these a couple of weeks ago for my gf's pc. managed to get a few nice photos of it biggrin.gif great looking waterblock.

Looks angelic in white but killer in black. Very nice.
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post #90 of 157
I just ordered a EK-LGA115x TRUE Backplate: http://www.ekwb.com/shop/review/product/list/id/825/category/27/?limit=20

Should work out well. smile.gif
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