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post #21 of 78
Quote:
Originally Posted by gqneon View Post

I have been slowly over time evolving an old Antec 1200 air cooling case to be an ugly but effective water cooling monster.

I can speak first hand to my experiences with big radiators. Skipping the prior configurations, etc, of how I got to this build configuration I'm at today, I have a 240 internal radiator in my loop I don't feel like disconnecting, and 2 1080 Phobya panels. One is mounted to my case side with 4x180mm silent low rpm fans and the other (which I just plumbed in today) is on a pair of feet outside the case. I'm testing it to see where its going to ultimately end up, and using a ghetto but very effective house box fan to see what my maximum cooling potential will look like.

I can say I hit diminishing returns a long time ago. I'll post a couple pics I just took. My ambient temp in the room is about 25.0 +/- 1C and my my delta's of my coolant are about 3C +/- 1C.

I ran an hour loop of Valley Benchmark. Even with a 4700k @ 4.5 @ 1.265v and 2x SLI 780 ti @ 1.212v 1260/8000 my water only got up to 28.1C under max fan load. It actually was hovering around 27.9 for a while but I keep messing with airflow angles.

I took my water chiller out of the loop, and took one of my 240 rads off the back before this test, and I have 1 MCP35x in a bay res combo. I finally started to see significant flowrate drop today with a second 1080 panel installed. I ran the tests at 25 and 30% pump speed, because I really prefer low noise. ONE MCP35x is sufficient to push what is basically the equivalent of 6 360's and a 240 in serial in my system, after passing through a cpu block and 2 gpu blocks. If I crank the pump up to 40% it's moving a great deal of water still. Above that it really still flows a great deal of water. But I did notice a good drop in flow at lower pump rpms.

So for what its worth, I have done what you're asking, and with more restriction in my loop than what you're likely considering based on the post. One MCP35x is a great option. If you want more, I can't fault you. But it really won't be necessary. BTW I used 1/2" ID / 3/4" OD tubing and only hav ea couple 90 degree elbows. Everything else I try to make a sweeping turn to keep kinks out.

I might actually sell one or both panels as I move on to my next build. I don't know.

I've got a picture of Frankenstein in testing glory I'll post - be kind - this project was never intended to be glamorous, just functional, and the box fan just happened to be a stop gap before final mounting and real fan placement. I think focused fans will probanbly lower the delta a bit more actually.

I'm happy with 3 C delta though with what I'm cooling lol... I guess I'm going to call this an extreme loop hahaha...

Great news, gqneon!
And thanks for the rep, Lucas!
I'll try measuring my delta this weekend, with a k-type probe from my multimeter... not the best way, but it's what I have in hand, and will report back!
Cheers
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post #22 of 78
Quote:
Originally Posted by gqneon View Post

Warning: Spoiler! (Click to show)
I have been slowly over time evolving an old Antec 1200 air cooling case to be an ugly but effective water cooling monster.

I can speak first hand to my experiences with big radiators. Skipping the prior configurations, etc, of how I got to this build configuration I'm at today, I have a 240 internal radiator in my loop I don't feel like disconnecting, and 2 1080 Phobya panels. One is mounted to my case side with 4x180mm silent low rpm fans and the other (which I just plumbed in today) is on a pair of feet outside the case. I'm testing it to see where its going to ultimately end up, and using a ghetto but very effective house box fan to see what my maximum cooling potential will look like.

I can say I hit diminishing returns a long time ago. I'll post a couple pics I just took. My ambient temp in the room is about 25.0 +/- 1C and my my delta's of my coolant are about 3C +/- 1C.

I ran an hour loop of Valley Benchmark. Even with a 4700k @ 4.5 @ 1.265v and 2x SLI 780 ti @ 1.212v 1260/8000 my water only got up to 28.1C under max fan load. It actually was hovering around 27.9 for a while but I keep messing with airflow angles.

I took my water chiller out of the loop, and took one of my 240 rads off the back before this test, and I have 1 MCP35x in a bay res combo. I finally started to see significant flowrate drop today with a second 1080 panel installed. I ran the tests at 25 and 30% pump speed, because I really prefer low noise. ONE MCP35x is sufficient to push what is basically the equivalent of 6 360's and a 240 in serial in my system, after passing through a cpu block and 2 gpu blocks. If I crank the pump up to 40% it's moving a great deal of water still. Above that it really still flows a great deal of water. But I did notice a good drop in flow at lower pump rpms.

So for what its worth, I have done what you're asking, and with more restriction in my loop than what you're likely considering based on the post. One MCP35x is a great option. If you want more, I can't fault you. But it really won't be necessary. BTW I used 1/2" ID / 3/4" OD tubing and only hav ea couple 90 degree elbows. Everything else I try to make a sweeping turn to keep kinks out.

I might actually sell one or both panels as I move on to my next build. I don't know.

I've got a picture of Frankenstein in testing glory I'll post - be kind - this project was never intended to be glamorous, just functional, and the box fan just happened to be a stop gap before final mounting and real fan placement. I think focused fans will probanbly lower the delta a bit more actually.

I'm happy with 3 C delta though with what I'm cooling lol... I guess I'm going to call this an extreme loop hahaha...

Good luck!






thumb.gifsmile.gifsmile.gifsmile.gifsmile.gifsmile.gif

Thanks for the detailed feedback man, +rep! Very happy with your performance and looking at what you have there, I'll probably try the single pump layout. Thank you again!
post #23 of 78
I'm running the XSPC Twin D5 Bay res with my MO RA3 420 Pro and RX360 rads in the loop. As I type this my ambient air temp is 70F or 21.11C and the water temp reading from the sensor in my MO RA3 is 22.6C!thumb.gif
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post #24 of 78
Quote:
Originally Posted by skline00 View Post

I'm running the XSPC Twin D5 Bay res with my MO RA3 420 Pro and RX360 rads in the loop. As I type this my ambient air temp is 70F or 21.11C and the water temp reading from the sensor in my MO RA3 is 22.6C!thumb.gif

Nice temperatures man, only 1.5ºC delta LOL. Overkill cooling? Unnecessary. But we want it? ALWAYS cheers.gif Just for curiosity, have you ever tested it with only one D5 on?

@Thread

Just some ideas tongue.gif

https://www.youtube.com/watch?v=FhqdDkd5ZlI
Edited by Lucas Bezerra - 5/15/14 at 7:05pm
post #25 of 78
Run an hour of valley and post results on delta, I'm curious!
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post #26 of 78
running just the gpu's under load isnt an accurate test of delta. you need the cpu under load also. it would be more along the lines of testing in a game where both the cpu and gpu(s) are loaded, such as bf4.
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post #27 of 78
I was seeing upwards of 28-29 in bf4 before I went to work tonight. Wish I was home to play and tell ya. Love extreme stuff tho
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post #28 of 78
my loop and my rig i was seeing an 8* delta after bf4 and also after running furmark for about an hour while running p95. cool ambients, a good pump, and well planned loop can work wonders.
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post #29 of 78


GiGant 1680 + Aquarium chiller
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post #30 of 78
Actually I ran Aida64 stress tests for 30 minutes. This stresses the cpu ,fpu, cache,system memory local disks and gpu all together. This TRULY produces the greatest amount of heat in the loop.
Ambient air temp was 22.78C and water temp after the 30 minute run was 29.2C.

The MAX temps for the respective parts is as follows:
MB 35C
cpu core 1-63
2-59
3-60
4-60
5-61
6-63

gpu vrm 54
diode 36

cpu vcore 1.4
cpu clock 4504 (3930k)

You can tell that this big rad can handle all the heat. BTW thew EVGA GTX780 classified is OC'd to a core of 1305 from stock of 993 and memory of 1697 and stock of 1500 with gpu vcore set at 1.271

I hope this info helps.
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