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[Build Log] Pandamonium (TH10 w/Ped, RIVE w/3930K, Tri-SLI EVGA 670 4GB SC, Water Cooled) - Page 32

post #311 of 431
Thread Starter 
Quote:
Originally Posted by Killhouse View Post

Possible NSFW: "50DKP MINUS!"
http://www.youtube.com/watch?v=aMJuXgzY1N8
Awesome build and build log, loving the pink sleeving!

Thanks!

Quote:
Originally Posted by Methos07 View Post

I miss the days of DKP...well sorta. I think the standard is EPGP now?

We're using a combination of loot council and rolling.
post #312 of 431
Quote:
Originally Posted by Reglar View Post

Thanks!
We're using a combination of loot council and rolling.

we do the same, mostly just rolling though. the days of DKP and EPGP are mostly gone by the wayside since most guilds arent doing 25 man raids. EPGP gained populairty because there was an addon for it.

come say hi some time

Adath - Malygos (US)

~end off topic~
post #313 of 431
Thread Starter 
So I wired up all the temp probes, pumps and flow meters and did some measurements.

I have more to do, but I have enough data to post the first set.

Test conditions:
  • vcore- 1.4 in bios, screenshots show actual on each test
  • CPU multiplier at 44
  • CPU loaded using Prime95 with the blend option
  • GPU2 loaded with windowed Heaven with max settings

Each screenshot shows fan level, fan RPMs, water average, ambient, flow from each pump, pump level and pump RPMs.


Here we're at the bottom of the scale, fans at 20%, pumps at 10% (although I think 0-25% is the same for the pumps). Delta T was 8.7. Noise was non-existent. CPU temps were at the upper range of desirable; I don't see using this as a long term level.




The next test I did was to see if pump speed made any difference; from what I saw the answer is no.




Here I did 30% on fans and pumps, Delta T was 5.9, noise level very very low. Also, CPU temps were much more inline with what I wanted. This may be my day to day level, although I need to redo the OC to see; for max benching of course I'll max pumps and fans.




Here I upped the fans to 40%, fan noise still very bearable, Delta T was 4.3. CPU temps dropped a few degrees from 30%.




Heading to bed so did one final test with fans and pumps at 100%, noise was ok but very undesirable for any length of time. Delta T was 2.7, confirming last night's findings. CPU temps were fantastic, Po is very pleased.




I will post more results Thu. Good news in that my sleeving arrived so this weekend should be cable cleanup!
post #314 of 431
Nice work! I look forward to seeing the next update wink.gif

+rep
PAROXYSM
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom x4 II 965 GA-990FXA-UD3 XFX HD 4870 1GB Corsair (12gb) 
Hard DriveHard DriveCoolingOS
2x1TB Caviar Black OCZ Vertex 60gb H50 W7 64-bit / Fedora 17 64-bit 
MonitorKeyboardPowerMouse
V7 22" Logitech Deluxe 250 Antec TruePower 750W Modular Razer Lachesis 
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None 
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PAROXYSM
(13 items)
 
  
CPUMotherboardGraphicsRAM
Phenom x4 II 965 GA-990FXA-UD3 XFX HD 4870 1GB Corsair (12gb) 
Hard DriveHard DriveCoolingOS
2x1TB Caviar Black OCZ Vertex 60gb H50 W7 64-bit / Fedora 17 64-bit 
MonitorKeyboardPowerMouse
V7 22" Logitech Deluxe 250 Antec TruePower 750W Modular Razer Lachesis 
Mouse Pad
None 
  hide details  
Reply
post #315 of 431
cool..so what exactly is the sweet spot for pumps vs fan speed for minimum deltaT ??...can u make a graph of sorts...
post #316 of 431
Measurements looking good! I'm ready to see some final build pics! biggrin.gif
post #317 of 431
Thread Starter 
Quote:
Originally Posted by Killhouse View Post

Nice work! I look forward to seeing the next update wink.gif
+rep

Thanks!

Quote:
Originally Posted by prathik7 View Post

cool..so what exactly is the sweet spot for pumps vs fan speed for minimum deltaT ??...can u make a graph of sorts...

Yes, I will. Thanks.

Quote:
Originally Posted by PCModderMike View Post

Measurements looking good! I'm ready to see some final build pics! biggrin.gif

This weekend!
post #318 of 431
Quote:
The next test I did was to see if pump speed made any difference; from what I saw the answer is no.
You'll not see much difference with pump speed (unless it's less than 1gpm) until your air out is less than water average. With fans at 20% or what not, I imagine that the air you're pushing through is already saturated with heat since its heat capacity is so low. Once the air flow through the radiator exceeds the radiator's ability to transfer the maximum amount of heat to the air, then increasing heat transfer by increasing water flow speed should start making an impact.
post #319 of 431
I can see that in your second test posted above, your delta didn't get any better when you increased the pump speed....but your CPU temps DID get about 2.5c better. That's worth doing. Especially if the pumps are still are not making much noise. The additional flow was removing more heat from the the blocks....but with very little fan speed it wasn't getting removed from the radiators as quickly. So the delta actually went up a little. I'll bet if you played with some pump speeds in the 50/60% range (hopefully still silent) and fans at a bearable range...you'll get the best results.

I love the aquaero information pages. Not sure if you've seen this done...but in one thread someone put a picture of their actual motherboard and rads as the background for an information page...and then dropped sensor readouts on top of the picture right where the probes were. You could do the same for fans/pumps, etc. It was very cool. And also don't forget that if you load Aida64...you can measure the CPU temps from within the aquaero. That way you wouldn't have to have the separate application window up to se these temps. You could even include them in the graphs!

Do you have the fan channels setup so you can do comparisons of push vs pull fans? Only turning one of them on...and seeing impact on temperatures and delta?
post #320 of 431
Thread Starter 
Quote:
Originally Posted by Electrocutor View Post

You'll not see much difference with pump speed (unless it's less than 1gpm) until your air out is less than water average. With fans at 20% or what not, I imagine that the air you're pushing through is already saturated with heat since its heat capacity is so low. Once the air flow through the radiator exceeds the radiator's ability to transfer the maximum amount of heat to the air, then increasing heat transfer by increasing water flow speed should start making an impact.

Thanks Electrocutor, I'll play with this tonight.

Quote:
Originally Posted by cpachris View Post

I can see that in your second test posted above, your delta didn't get any better when you increased the pump speed....but your CPU temps DID get about 2.5c better. That's worth doing. Especially if the pumps are still are not making much noise. The additional flow was removing more heat from the the blocks....but with very little fan speed it wasn't getting removed from the radiators as quickly. So the delta actually went up a little. I'll bet if you played with some pump speeds in the 50/60% range (hopefully still silent) and fans at a bearable range...you'll get the best results.
I love the aquaero information pages. Not sure if you've seen this done...but in one thread someone put a picture of their actual motherboard and rads as the background for an information page...and then dropped sensor readouts on top of the picture right where the probes were. You could do the same for fans/pumps, etc. It was very cool. And also don't forget that if you load Aida64...you can measure the CPU temps from within the aquaero. That way you wouldn't have to have the separate application window up to se these temps. You could even include them in the graphs!
Do you have the fan channels setup so you can do comparisons of push vs pull fans? Only turning one of them on...and seeing impact on temperatures and delta?

Thanks for the idea on the picture, I'll play with it tonight. I'll also load up Aida64 to get the CPU temps into the Aquaero 5. As for the fans, I have all the fans on the same channel, so outside of manually disconnecting one side or the other during testing I don't really have the ability to test push vs pull. I also have no desire to manual unplug the fans now that I have them all setup, so I'll defer to someone else for that push vs pull comparison.
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