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CPU BLOCK FLOW DIRECTION?

 
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post #1 of 7 (permalink) Old 08-05-2019, 04:08 PM - Thread Starter
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CPU BLOCK FLOW DIRECTION?

i have a 3770k and a cheapy chinease water block.

the block is omnidirectional and can be mounted for vertical/sideways flow or horizontal/up-down flow.

in its horizontal flow position (left to right) i had all cores at a very similar temp but it caught a small bubble on the exit side at the top corner.

so i changed it to a vertical (top to bottom flow) to stop the bubble catching but ive just noticed that the bottom core is about 3-5 degrees C lower that the other three now.

ive read that as i have a rectangular cpu die that i should have the flow going from side to side, which honestly makes sense. is this the case?

if so should i worry about the bubble?

also looking at the chip die layout.....the cores are on the left and the memory controller io is on the right. would left to right vs right to left make a difference?

thanks in advance for the help

Jim
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post #2 of 7 (permalink) Old 08-05-2019, 04:14 PM
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no matter the orientation of the waterblock, flow rate should be linear as the path doesn't change.


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post #3 of 7 (permalink) Old 08-05-2019, 07:03 PM
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Most likely it's the "cheapy chinease water block" causing problems with your flow.

Good block manufacturers will make sure the flow moves all the around the block, regardless of orientation.

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post #4 of 7 (permalink) Old 08-05-2019, 07:06 PM
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I would attempt a re-seat, but no the little bubble doesn't really matter.

remember, water temp doesn't really change before/after a block. cores on the left, and moon over miami, doesn't matter.

all that matters is that the block was properly designed to cool the right amount of space. if not? then go with the orientation that works best... try a re-seat first though if you prefer it how it is now.

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post #5 of 7 (permalink) Old 08-06-2019, 04:46 PM - Thread Starter
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yeah i gave up on the cpu block last night.

it wasnt flow rate i was asking about......it was water path over the cpu die. A horizontal flow gave me about 1-2 degrees c lower max temps and a more even temp between each core.

ive drawn a crude pic to illustate what was going on.









i ended up pulling the pump part out of my h100 water block, and ran that instead. which yeilded another 3 -4 degrees c lower. the flow direction of this block is from centre to outside with much finer fins.
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post #6 of 7 (permalink) Old 08-06-2019, 05:14 PM
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that tells me the original pump wasn't anywhere near 1GPM

and as stated, block design may inhibit total cooling ability, so whichever orientation works best, use.

seems you've got it all sorted.

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post #7 of 7 (permalink) Old 08-06-2019, 07:05 PM
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Good to hear you are getting better temps. Good luck.

Build: msi C8r (Carbon8r)
Core i7-9700K, MSI Z390 GAMING PRO CARBON Mobo, AMD Radeon VII GPU, Corsair Vengeance RGB 32GB DDR4-3200 RAM, Phanteks Enthoo Pro M SE ATX Case.
XSPC RayStorm Pro CPU w/b, Bykski Radeon VII GPU w/b, EKWB 140 Revo D5 Pump & Rez.
Aquacomputer Aquaero 6 LT USB Fan-Controller, Vision Touch and 'High Flow' Sensor.
(2x) Hardware Labs Black Ice Nemesis 280GTS XFLOW radiators in full push/pull with 6x Deepcool RF 140mm & 2x Prolimatech 140mm Slim Fans.
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