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ΔT Grades and Ranks

post #1 of 7
Thread Starter 
ΔT = Coolant Temperature - Ambient Temp

Doing burn-in test for 20min at least,
If ΔT<3℃, then you made perfect watercooling, marked A+
If 3℃≤ΔT<5℃,then A
If 5℃≤ΔT<8℃,then B
If 8℃≤ΔT<12℃,then C
If 12℃≤ΔT<15℃,then D
If ΔT≥15℃,then congratulations,your system is OUT OF CONTROL

This is only for high-end computer configuration. When doing 100% full load burn-in test, power consumption peaks to at least 700W.

This is all my personal experience. Welcome any different thoughts.
post #2 of 7
I just ran it on my system for the heck of it.

Water temp at idle was 29, at load was 31. Room temp was 26 the whole time.

At idle, ΔT of 3c, at full load for 20 minutes Prime 95 ΔT of 5c.


This is with an HWlabs GTX360 with 2200RPM Yate-loon fans on a PWM controlled controller with the fans running at 80% at 60c (highest load temp). unfortunately the only load right now is my CPU, a 2600k at 4.3ghz. I'll be adding my 6950 tomorrow or Wednesday, and can re-test then (should be about 400w or so then).
post #3 of 7
My system only gets a B, but that is with full CPU and GPU load, and water cooled RAM.
Also, my fans don't make it sound like I have a leaf blower running in my den like some systems I've been around.
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Grog
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RAMHard DriveOptical DriveCooling
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AquagraFX470 EK FC-88 Koolance RP402x2 MCP35x pumps 
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Phobya Extreme 200 and Quad 480 radiators. 9x Akasa Viper fans Windows 7 Ultimate Old LG Flatron 1680x1050 
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post #4 of 7
At tdp with my fans at ~1500 rpm I get <3 delta and when they're down to ~750 I get a 7c delta. So I guess A+and B. Power consumption at 1480watts (converted for 80% efficiency). If just the cpu being stressed then both A+ scores.
Edited by fat_italian_stallion - 4/25/11 at 9:43pm
 
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post #5 of 7
Mine is negative. Load temps are lower than idle temps.

No fans for me at idle. They ramp up on load.
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post #6 of 7
Thread Starter 
Quote:
Originally Posted by fat_italian_stallion View Post
At tdp with my fans at ~1500 rpm I get <3 delta and when they're down to ~750 I get a 7c delta. So I guess A+and B. Power consumption at 1480watts (converted for 80% efficiency). If just the cpu being stressed then both A+ scores.
Wow, 1480watts....
post #7 of 7
Quote:
Originally Posted by c14c13 View Post
Wow, 1480watts....
what overclocked i7 and tri sli 480s gets you. They really suck the power, especially folding 24/7, but i lower the oc for that. The rig only consumes around ~1250 watts then and 1560 at the socket. Thankfully electricity is only 6.7cents per kwh here.
 
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1TB Samsung EVO 850 2x 2TB Western Digital Caviar Black 1x Hardware Labs Black Ice GTX 560  Bitspower Pump Upgrade Kit 
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2x Hardware Labs Black Ice GTX 280 Hardware Labs Black Ice GTX 480 Dual Uber MCP655 Noiseblocker PK-3  
CoolingCoolingCoolingOS
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Project Atlantis
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CPUMotherboardGraphicsRAM
i7 3960X w/ EK Supreme HF  Asus Rampage IV Extreme w/ EK full cover Tri SLi EVGA GTX TITAN SC w/ EK full cover & Ba... 64 GB Dominator w/ MIPS Ram Cooler 
Hard DriveHard DriveCoolingCooling
1TB Samsung EVO 850 2x 2TB Western Digital Caviar Black 1x Hardware Labs Black Ice GTX 560  Bitspower Pump Upgrade Kit 
CoolingCoolingCoolingCooling
2x Hardware Labs Black Ice GTX 280 Hardware Labs Black Ice GTX 480 Dual Uber MCP655 Noiseblocker PK-3  
CoolingCoolingCoolingOS
Bitspower Compression Fittings Lamptron FC-8 Noiseblocker PL-2 Windows 7 Ultimate 64bit 
MonitorKeyboardPowerCase
Asus PB287Q 4K Steelseries 7G Custum wired EVGA NEX 1500 Caselabs SMA8 
MouseMouse Pad
Rat 7 Razer Goliathus XL 
CPUMotherboardGraphicsRAM
i7 920 c0 @ 4.2 Ghz w/ 1.4v max 4.6ghz @1.55v w... Asus P6T6 WS Revolution w/ koolance nb/sb+mosfe... EVGA GTX 480 x3 w/ Koolance Vid-NX480 12gb Corsair Dominator 1600mhz w/ MIPS Ramcooler 6 
Hard DriveOptical DriveCoolingOS
1.5 Tb Seagate barracuda x3 LG Bluray Burner 2x SR1 360, RX 360, SR1 240, SR1 120, 2x MCP355... Win 7 Ultimate 64bit 
MonitorKeyboardPowerCase
Samsung t260 x3 Razer Black Widow Ultimate Silverstone st1200 Mountain Mods U2UFO w/ MM Pedestal Addition 
MouseMouse PadAudioAudio
Razer Mamba Razer Destructor X-Fi Fata1ity Logitech Z-5500 
CPUGraphicsRAMHard Drive
i7 3840QM 650ti 8GB 1333mhz DDR3 256gb ssd 
OSMonitorPowerCase
OSX Mountain Lion Retina Display 85w Magsafe Power Adapter Aluminum Unibody 
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