help with loop

[vexvegaz]

hey guys..

ive decided to put my 2 xfx7900GT on water using the danger den maze4 sli blocks, but im not sure how to add it into the loop with having the maximum performance. and since i have a hard time explainin, i figure id jus draw it and show what i had in mind.

http://i81.photobucket.com/albums/j213/vexvegaz/loop.jpg

cooling specs :
cpu: storm
gpu: maze4 sli
rad: blackice extreme 2
pump: DD d5
res: bay res

tnks for ur inputs

[Turok]

Replace your reservoir with a T-line. Put the T-Line as close to the pump as possible
Dont use Y-fittings. Put everything in a series.
Make sure the tube that links the two GPU blocks isnt too short or it will kink or cause high resistance.

Here are my drawing:
http://img301.imageshack.us/img301/7017/wcrecommendation0ee.gif

[found404]

The arguments of series vs parallel are well documented and I have to agree it's always easier to put everythng in series. I'm indifferent to the res, if you keep it in the loop just leave everything as in your diagram, but put the maze4s in series.

[Turok]

well your pic shows that the T line is on the output of pump when it should be on the inlet of pump. if hooked that way..... got a rain suit handy an mop to clean up

oops :slap:
Edited the pic

[vexvegaz]

thanks for the reply guys..

the reason i was thinking of doing a parrallel instead of a serial loops is cause of the heat thats generated out of the cpu then the first gpu then second gpu.
wouldnt the heat of the water build up while it goes tru the blocks within the loop?

[Drunner611]

No, the water temps will be roughly the same. Think of a 5 gallon bucket full of hot water. The water temp might fluctuate at certain points in the bucket, but its roughly the same. Same as water in a closed loop. The water will all even out to a certain temp. ex. the water from the cpu going to the gpu won't be any hotter(noticably) than it coming out of the radiator.

[mad mikee]

IMHO :D

I think that the pump should be feed the rad, then CPU-> GPU1-> GPU2, THEN the T-LINE to the pump inlet. This way the CPU gets the COOLEST water.

If you can, get or make an EXPANDED t-line.

(Need 6" min. to do this right). Get a bigger Tee or get some parts from teh HW store (schedule 40,etc) get a 3/4" or 1" ID T and fittings to make one. The Idea it that the water will slow down in the larger area, releasing trapped air more easily.
Hope this helps

[vexvegaz]

thanks guys..will post pics as soon as im done witht he leak testing
BTW i ended up doing a serial loop.

again thanks everyone

[septim]

did anybody try flipping the Tee?
maybe it may trap the air when it reaches the tee?

[ReD.SkY]

90 degree bend on the Tee is a nono

[Turok]

90 degree bend on the Tee is a nono

On top of that its better to have the T-line or reservoir verry close to the pump's inlet so the pump is overwhelmed with water, and the outlet should rush directly into a block with all the pressure.

[vexvegaz]

hello again guys..
finaly got the maze4 SLi installed n leak tested and you guys were right..the temp between the 2 gpu's are minimal at best with a 1-2 degrees difrence.

here are sum pics
http://i81.photobucket.com/albums/j213/vexvegaz/DSCF0570.jpg
http://i81.photobucket.com/albums/j213/vexvegaz/DSCF0572.jpg
http://i81.photobucket.com/albums/j213/vexvegaz/DSCF0573.jpg

[Waxman]

Single fan rad for all that heatload? :eek:

Isn't that a little bit on the short side?

I have only one card and I have two rads inside my case.

I have a X1800GTO and an optie 146 CABNE @ 3ghz 1.44v.

Loop is a follows:

res-mcp655-mcw60-BIPro 120-Storm- swiftech mcq220 rad

and it's like 45ºc on the gpu and 34ºc on the cpu. But my house is very hot.

EDIT: I see it's actually a BIX2. That's a little bit better but maybe you could gain a few degrees on your cards by having a rad between the cpu block and the cards. The pump sure handles it.

[vexvegaz]

i'd switch tubes on the storm around, have the hot liquid on the top going to rad cos the center barb is the input

wouldnt that defeat the purpose of the storm design? the middle of the block is where the the turbulance is produced that cools the block?

http://i81.photobucket.com/albums/j213/vexvegaz/storm-exploded.gif

[vexvegaz]

Single fan rad for all that heatload? :eek:

Isn't that a little bit on the short side?

I have only one card and I have two rads inside my case.

I have a X1800GTO and an optie 146 CABNE @ 3ghz 1.44v.

Loop is a follows:

res-mcp655-mcw60-BIPro 120-Storm- swiftech mcq220 rad

and it's like 45ºc on the gpu and 34ºc on the cpu. But my house is very hot.

EDIT: I see it's actually a BIX2. That's a little bit better but maybe you could gain a few degrees on your cards by having a rad between the cpu block and the cards. The pump sure handles it.

yea i kinda figured i was crippling my loop by having only one fan on the rad, i plan on fixing that as soon as i get a more adequit case , prolly the lian li v2000 or the v1000(still deciding). this lanboy case is just too small but i love its portability.

[Okda]

just buy a MCR-220 or MCR-320 and hang it @ the back like ur single rad and u won't need to buy another case or something

[septim]

can't he just buy the 120.2 rad and put it outside with 2 fans on pull.