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[Sponsored]Project Thief - COMPLETED 11/13/2014 - 2 CPUs, 8 GPUs, 4 Loops, 6 Pumps, 50+ Fans, 2TB SSD - Page 130

post #1291 of 3824
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Quote:
Originally Posted by itskerby View Post

Sounds like a good plan, I'm holding back some purchases until you finish (no rush though, cough tongue.gif)
How's the MCP35X2 treating you?

Haha well just bear in mind I'm testing with IX and normal TIM will introduce bowing and other mount effects that may change the distribution. So if you're basing it on my data you may want to use IX lol. I love the MCP35X2, quiet despite it's power and the PWM just makes sweeping the flow variable so easy. I added the heatsink and have a dedicated fan on it so that the heat stays out of the loop as much as possible.
Quote:
Originally Posted by Lutro0 View Post

299

Lol lutro0 - btw I received my sleeving tools from you last week! I still mean to call you on skype about it - but my wife is at home all the time right now studying for the cpa so I don't get to use a windows machine because I haven't got my own one running yet.
Quote:
Originally Posted by Blizlake View Post

Lutro0 just made my day lachen.gif
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Originally Posted by shadowhero18 View Post

*tries to make facebook like button appear on screen*
I'm with ya!
Quote:
Originally Posted by Citra View Post

lachen.gif

Lol seriously!
     
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post #1292 of 3824
Just out of curiosity, how are you compensating your data for different flow rates if you only test at certain power levels? Having a less restrictive block means that the flow would also be higher through the radiator; and the cooling portion of the test should be a constant, no?
post #1293 of 3824
Thread Starter 
Quote:
Originally Posted by Electrocutor View Post

Just out of curiosity, how are you compensating your data for different flow rates if you only test at certain power levels? Having a less restrictive block means that the flow would also be higher through the radiator; and the cooling portion of the test should be a constant, no?

So I'll present the data many ways but will include these two somewhere:

- at a fixed power level that represents "what you'll expect in a loop" due to differences in block restriction, this should be a delta to water so as to avoid secondary radiator/pump effects
- at varying power levels that represents how the block varies with flow, this I'll plot vs air and vs water so you can see the secondary effects of radiator/pump

Did that answer the question?
     
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post #1294 of 3824
Maybe he wants a comparison with all the loops running at a fixed gpm instead of fixed pump speed. Like every block @ 1.5gpm.
post #1295 of 3824
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Quote:
Originally Posted by Blizlake View Post

Maybe he wants a comparison with all the loops running at a fixed gpm instead of fixed pump speed. Like every block @ 1.5gpm.

Gotcha - well hopefully the flow rate curves will show that and you can choose at what point to read it smile.gif Sadly I don't have an exact flow rate that will be constant across all blocks. Maybe that's something to do on the regular TIM retest lol
     
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post #1296 of 3824
You are going to do a retest on regular TIM? Oh god, you're not going to be updating the build for a while, are you? lachen.gif
post #1297 of 3824
If you do not fix the flow rate to specific constants, then you introduce the flow vs heat transfer of your selected radiator into the data. Different radiators respond differently to changes in flow rate, so giving data at fixed pump levels is really only valid for the PQ curve test.

Alternatively, you can use pump power as the constant, but then you will need to calculate and adjust your numbers for the radiator's flow vs heat transfer and flow vs pressure drop so that the numbers for each CPU block can be compared as apples to apples.
post #1298 of 3824
Quote:
Originally Posted by stren View Post

Gotcha - well hopefully the flow rate curves will show that and you can choose at what point to read it smile.gif Sadly I don't have an exact flow rate that will be constant across all blocks. Maybe that's something to do on the regular TIM retest lol

?? Pump -> Valve -> Flow Meter -> Pressure meter -> CPU -> pressure meter
post #1299 of 3824
Thread Starter 
Quote:
Originally Posted by Blizlake View Post

You are going to do a retest on regular TIM? Oh god, you're not going to be updating the build for a while, are you? lachen.gif

Lol - well if I get a 3rd PSU I'll have enough spare gear to finish the build with the 990x while I keep testing on the 2nd 3930K corsair please send me an ax650 or something
Quote:
Originally Posted by Electrocutor View Post

If you do not fix the flow rate to specific constants, then you introduce the flow vs heat transfer of your selected radiator into the data. Different radiators respond differently to changes in flow rate, so giving data at fixed pump levels is really only valid for the PQ curve test.
Alternatively, you can use pump power as the constant, but then you will need to calculate and adjust your numbers for the radiator's flow vs heat transfer and flow vs pressure drop so that the numbers for each CPU block can be compared as apples to apples.

What I was trying to say is that I'll be presenting data in many forms, of which one would be like this:

Yo47N.jpg

With this plot you can then pick a fixed flow rate of interest to you, draw a vertical line up and look at the difference between the curves.

This plot can be misleading though - it makes the rasa and supreme HF look close, but really the rasa has terrible core to core variation and is way more restrictive such that the "useful" performance is much better on the supreme HF.
Quote:
Originally Posted by Electrocutor View Post

?? Pump -> Valve -> Flow Meter -> Pressure meter -> CPU -> pressure meter

I need to get a pressure meter that's the next step frown.gif If this goes well I may get one
     
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post #1300 of 3824
Thread Starter 
So now I'm just confused - the Bitspower Summit HF performed terribly - so badly in fact that there has to be something wrong, yet the TIM reflow looked fine. I'll have to take the block apart tomorrow to see if there's something wrong internally with this sample frown.gif The only thing I did notice was that the fins inside the block run at 90 degrees to the normal orientation for every other block. I'll have to retry the block another time, but for now I'm moving on to the supremacy.
     
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