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General Liquid/Water Cooling Discussion For discussion about Full Cooling System kits, or general cooling topics. Keep specific cooling items like pumps, radiators, etc... in their specific forums. |
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12-21-2003, 09:51 PM | #1 |
Cooling Savant
Join Date: Jan 2003
Location: Los Angeles
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Adding a GPU and NB block
My CPU block is a white water and I was thinking that maybe I could run pump>rad>cpu block>gpu & nb>pump, etc. The cpu block has 2 exhausts so I was thinking one to the gpu the other to the nb and both to a Y and to the pump and start the cycle all over. Would that be okay? Anyone tried it? What works best in your experience?
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12-21-2003, 11:20 PM | #2 |
Thermophile
Join Date: Sep 2002
Location: Charlotte, NC
Posts: 1,014
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If they the 1/2" Dtek GPU and NB blocks, this would work very well because they are essentially the same block and therefore would cause almost equal restriction. Water would be split fairly evenly between the two. It would be even better if you could keep their lines seperate until you got to a resevior or something, but it doesnt look like you have one in your system. Having them inline will create more restriction than keeping them seperate after the whitewater, thereby improving temps for the CPU. Also, the NB and GPU dont produce nearly as much heat as the CPU, so you should be alright in that category. I'd say go for it.
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12-22-2003, 01:55 AM | #3 |
Cooling Savant
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Location: Los Angeles
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I was actually thinking of going with the swiftech gpu and nb blocks as they seem to have no/little restiction. Are these a bad choice to go with for this setup?
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12-22-2003, 02:48 PM | #4 |
Cooling Savant
Join Date: Oct 2003
Location: Almere, The Netherlands (Europe)
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LOL
All blocks are OK, just as long as they have "equal" restiction. You are planning to use them after the WW anyway, so the type of blocks does not matter that much in this case. Joining the outlets prior to the NB would gain a bit on the NB and GPU (1 degree e.g.) and you loose some on the WW. Leaving the WW split, would gain a bit on the WW, but you lose a bit on the NB/GPU.. (as the flow is devided in half) I'm not sure with keeping the 2 tubes till the res. 2 hoses have 2 times the wall surface, giving a but more restriction. But as it is spilt, the friction will be less. It just might be equal.
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12-22-2003, 11:57 PM | #5 |
Cooling Savant
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Ahhh! I got it. The similar restriction refers to the gpu and nb only not incl the ww. The point being to not cause some sort of back flow or uneven flow out of the ww. Right?
Any other ins and outs that a noob like me might subject to myself because of my ignorance??? |
12-23-2003, 03:05 AM | #6 |
Cooling Savant
Join Date: Oct 2003
Location: Almere, The Netherlands (Europe)
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LOL (again), when it comes to watercooling we are "all noobs".
(Except a few specialists) But yeah, the key is to prevent to much "back pressure" and to divide the flow as equal as possible. But it still isn’t rocket science. Having a bit more flow at one side, doesn’t mean you’ll get real bad results. The biggest issue is still to prevent leaks and the use of elbows
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12-23-2003, 08:52 AM | #7 |
Thermophile
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Location: Charlotte, NC
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What kind of pump do you have. If you have a weak/low flow pump, it is likely you will have uneven flow.
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12-23-2003, 11:39 AM | #8 |
Cooling Savant
Join Date: Oct 2003
Location: Almere, The Netherlands (Europe)
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?????????? :shrug: ??????????
Even with a 1 gph pump you won't get this... If the pump is real weak, and it won't give pressure inside the WW, you might get an uneven dividing of flow, but that is in that case a design/manufacturing mistake. If I'm correct (has been 20 years ago since I had this stuff) we are dealing with the law of Pascal. <<Pressure is the same in all directions.>> This also goes for the two outlets of the WW. Any difference in the pressure is a design mistake, letting the Jet pushing more water to one side. You will only see it more clearly with less waterflow
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12-23-2003, 04:15 PM | #9 | |
Cooling Neophyte
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Quote:
I'm not sure whether unbalanced flow would signifigantly effect performance (due to the jet design). Cather should be able to say, though.
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12-23-2003, 06:41 PM | #10 |
Cooling Savant
Join Date: Oct 2003
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Jep, we need Cathar!
Not only will he be able to tell us if the "delayed" split ater the WW is a good setup (better then combining the spilt, and then let it flow through the NB and then GPU block), he could also tell is if the jet was designed for equal flow. (My best guess is that it is)
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12-23-2003, 07:02 PM | #11 |
Thermophile
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Location: Melbourne, Australia
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Equal flow works best. Blocking off one outlet totally will reduce performance by around 1.5C or so, with the actual performance hit for splitting the flow unevenly being some middle point between 0-1.5C worse depending on how uneven it gets split.
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12-23-2003, 07:44 PM | #12 |
Cooling Savant
Join Date: Oct 2003
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Thank you for the reply!
Just one question in mind. Having the split going through the other blocks first prior to joining them together, will give a bit less "backpressure" then placing them after each other. Will this improve the performence?
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12-23-2003, 09:30 PM | #13 | |
Thermophile
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Quote:
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12-24-2003, 12:35 AM | #14 |
Cooling Savant
Join Date: Oct 2003
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OK thanks Cathar!
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12-24-2003, 04:27 AM | #15 | |
Cooling Savant
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Quote:
Last edited by psychofunk; 12-24-2003 at 04:36 AM. |
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