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Diminishing Return?

888 views 8 replies 5 participants last post by  AllGamer 
#1 ·
So playing around with a 6950x and trying to figure if another rad would help lower temperatures. I have the following in a Corsair 900D:

Rampage V Extreme Monoblock
EK XE 360mm Radiator (located on top with fans pushing against radiator)
EK XE 120mm Radiator (located in front with fans pushing against radiator)
Swiftech MCP655 @ Max speed

I have a total of 10 fans, all are Gentle Typhoon AP-15.

I was thinking about adding another EK XE 360mm radiator, you guys think it'll be diminishing returns by doing that? What else can I add to lower temps?
 
#4 ·
So, you're talking of lowering temperatures. The best way is to approach this with numbers:

1. Ambient air.
2. Water.
3. Whatever you cool - CPU, GPU core, etc.

More radiators will decrease delta between 1 and 2. It will not change delta between 2 and 3.

I personally would add another rad just for the hell of it. Realistically though you already have 4 rad sections per one CPU only, so I don't think there will be much improvement. Then again it is 6950 we're talking about here. Why not just go all the way?
 
#5 ·
Quote:
Originally Posted by aznsniper911 View Post

Quote:
Originally Posted by billbartuska View Post

Are the rad fans intake, exhaust, or what?
How about the rest of the fans?
Top 360mm fan are exhaust, rear 120mm fan is exhaust. side left panel has 3 x 120mm fan as intake, front 120mm radiator is intake along with 2 more 120mm intake fans.
Something like this?



If so, it looks pretty good.
 
#6 ·
Quote:
Originally Posted by billbartuska View Post

Something like this?



If so, it looks pretty good.
Quote:
Originally Posted by cmpxchg8b View Post

So, you're talking of lowering temperatures. The best way is to approach this with numbers:

1. Ambient air.
2. Water.
3. Whatever you cool - CPU, GPU core, etc.

More radiators will decrease delta between 1 and 2. It will not change delta between 2 and 3.

I personally would add another rad just for the hell of it. Realistically though you already have 4 rad sections per one CPU only, so I don't think there will be much improvement. Then again it is 6950 we're talking about here. Why not just go all the way?
I'm just afraid that I might need a second pump or would one be suffice? Haha I'll be surprised if it'll help but guess why not then.
Quote:
Originally Posted by billbartuska View Post

Something like this?



If so, it looks pretty good.
Yup exactly as is. Might get higher cfm/static pressure fan also.
 
#7 ·
What're your full load water temps right now? Also what speed do you run your fans at full load?

I'd be surprised if you've got a 10°c water-ambient Delta (difference), so another rad might drop a couple degrees. It would enable you to run slower fan speeds and maintain the same temps as before though.

One pump (d5/ddc) would be fine, even with a few more rads. I've been rebuilding mine and just refilled it last night. I started with only one d5 powered on and set to "5" it was able to push the loop just fine and it's a monster of a loop! (5 rads, 3 blocks, about 20-90° fittings and 4 QDC'S)
 
#8 ·
Quote:
Originally Posted by 0ldChicken View Post

What're your full load water temps right now? Also what speed do you run your fans at full load?

I'd be surprised if you've got a 10°c water-ambient Delta (difference), so another rad might drop a couple degrees. It would enable you to run slower fan speeds and maintain the same temps as before though.

One pump (d5/ddc) would be fine, even with a few more rads. I've been rebuilding mine and just refilled it last night. I started with only one d5 powered on and set to "5" it was able to push the loop just fine and it's a monster of a loop! (5 rads, 3 blocks, about 20-90° fittings and 4 QDC'S)
about 32c or so and yeah it's actually about 10c difference between ambient and my water temps. my fans are at full max.
 
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