Overclock.net › Forums › Cooling › Water Cooling › Is there a difference between a coldplate designed for GPUs vs CPUs?
New Posts  All Forums:Forum Nav:

Is there a difference between a coldplate designed for GPUs vs CPUs?

post #1 of 9
Thread Starter 
I'm curious. I'm sure you all have heard of "The Mod", where us cheap people slap an AIO CLC onto a GPU. We used traditional CPU AIOs (like a Corsair H55), but Asetek says, somehow, the coldplate on a CPU AIO is not ideal for GPUs. This has been "tested": MSI's Sea Hawk used the regular Corsair H55 (designed for CPUs), while the EVGA Hybrid uses the "Asetek 740LC" (designed for GPUs).

Both rads are single 120mm x 27mm.
Quote:
Whereas MSI has used Corsair’s CPU-centric H55 AIO (basically Asetek’s 550LC), EVGA has decided to utilize a version of the GPU-specific Asetek 740LC. The visual differences between the two are minor at best but internally the 740LC has a contact plate specifically designed for GPU cores, something the H55 lacks due to its CPU cooling roots.

.....

The first set of temperature results is nothing short of astounding. It looks like the Hybrid is able to remain nearly 10°C cooler than the Sea Hawk throughout the test. Whether or not this is due to the GPU-centric nature of EVGA’s cooling unit, the higher RPM fan or a combination of factors is anyone’s guess.

As an airhead, I have no idea, but...really? Can just a coldplate give you a 10C difference? Gamers Nexus tested this as well, where the GPU version was 16C cooler under load. I'm going crazy. Are coldplates really that different?




EDIT:
Specification sheets,
The Asetek 550LC (the MSI Sea Hawk / Corsair H55), used for CPUs only
The Asetek 740GN (the EVGA Hybrid), used for GPUs only

Possible causes: 550LC has weaker pump (2.1W). 740GN has a stronger pump (3.1W). Could that cause a 10-15C decrease?
Edited by ikjadoon - 7/23/16 at 7:32pm
The 2013 Build
(14 items)
 
  
CPUMotherboardGraphicsRAM
--- SOLD --- --- SOLD ---  --- SOLD --- --- SOLD --- 
Hard DriveOptical DriveCoolingOS
Samsung 850 EVO 500GB ASUS DRW-24B3ST (24X DVD burner) Noctua NH-U14S w/ NH-T1 TIM Windows 10 Pro (x64) 
MonitorKeyboardPowerCase
ASUS VG248QE w/ Lightboost @ 120Hz Ducky Shine III (MX Brown w/ Red backlights) Kingwin LZP-1000 (1000W) PSU Corsair Carbide Air 540 
Mouse Pad
Razer Goliathus (Precision Control model) - Sta... 
  hide details  
Reply
The 2013 Build
(14 items)
 
  
CPUMotherboardGraphicsRAM
--- SOLD --- --- SOLD ---  --- SOLD --- --- SOLD --- 
Hard DriveOptical DriveCoolingOS
Samsung 850 EVO 500GB ASUS DRW-24B3ST (24X DVD burner) Noctua NH-U14S w/ NH-T1 TIM Windows 10 Pro (x64) 
MonitorKeyboardPowerCase
ASUS VG248QE w/ Lightboost @ 120Hz Ducky Shine III (MX Brown w/ Red backlights) Kingwin LZP-1000 (1000W) PSU Corsair Carbide Air 540 
Mouse Pad
Razer Goliathus (Precision Control model) - Sta... 
  hide details  
Reply
post #2 of 9
Maybe the GPU only version has a thicker base(it does stick out) that transfers/holds more heat OR the 90 degree bends suck down the performance.
Gaming
(15 items)
 
Media Center
(17 items)
 
 
CPUMotherboardGraphicsRAM
2600K @ 4.4 Maximus IV Gene-z Asus Dual 1070 OC with Artic Mono Plus G.SKILL F3-1866C9D-16GXM Ripjaws X 16GB 
Hard DriveHard DriveOptical DriveCooling
M4 256 MX 300 Liteon Slot load H80i 
OSMonitorKeyboardPower
Windows 7 HP 64 bit BenQ XL2420Z Logitech Wave Corsair 850HX 
CaseMouseAudio
Silverstone FT03 Logitech G9 X-fi Titanium Fatality 
CPUMotherboardGraphicsRAM
i5 750 h55n usb3 msi gtx 650 ti Corsair XMS3 CMX8GX3M2A1600C9 
Hard DriveHard DriveHard DriveOptical Drive
WDC Red 3tb M4 128 WDC scorpio Blue 2.5 Sony AD-7690H-01 
CoolingOSMonitorKeyboard
Geminii S Windows 7 HP 64 bit SyncMaster 245t Logitech Wave 
PowerCaseMouseAudio
FSP SFX 300 watt SG05 Logitech G9 Sound Blaster Omni 
Other
HD PVR 
  hide details  
Reply
Gaming
(15 items)
 
Media Center
(17 items)
 
 
CPUMotherboardGraphicsRAM
2600K @ 4.4 Maximus IV Gene-z Asus Dual 1070 OC with Artic Mono Plus G.SKILL F3-1866C9D-16GXM Ripjaws X 16GB 
Hard DriveHard DriveOptical DriveCooling
M4 256 MX 300 Liteon Slot load H80i 
OSMonitorKeyboardPower
Windows 7 HP 64 bit BenQ XL2420Z Logitech Wave Corsair 850HX 
CaseMouseAudio
Silverstone FT03 Logitech G9 X-fi Titanium Fatality 
CPUMotherboardGraphicsRAM
i5 750 h55n usb3 msi gtx 650 ti Corsair XMS3 CMX8GX3M2A1600C9 
Hard DriveHard DriveHard DriveOptical Drive
WDC Red 3tb M4 128 WDC scorpio Blue 2.5 Sony AD-7690H-01 
CoolingOSMonitorKeyboard
Geminii S Windows 7 HP 64 bit SyncMaster 245t Logitech Wave 
PowerCaseMouseAudio
FSP SFX 300 watt SG05 Logitech G9 Sound Blaster Omni 
Other
HD PVR 
  hide details  
Reply
post #3 of 9
Thread Starter 
Quote:
Originally Posted by Nukemaster View Post

Maybe the GPU only version has a thicker base(it does stick out) that transfers/holds more heat OR the 90 degree bends suck down the performance.

You know, that would make a lot of sense. 120mm x 27mm isn't a lot, but these 980 Ti's are putting out 250W+, so the coldplate thickness could be important.

I actually think both of them use similar tubing: off the side of the block/pump combo.
The 2013 Build
(14 items)
 
  
CPUMotherboardGraphicsRAM
--- SOLD --- --- SOLD ---  --- SOLD --- --- SOLD --- 
Hard DriveOptical DriveCoolingOS
Samsung 850 EVO 500GB ASUS DRW-24B3ST (24X DVD burner) Noctua NH-U14S w/ NH-T1 TIM Windows 10 Pro (x64) 
MonitorKeyboardPowerCase
ASUS VG248QE w/ Lightboost @ 120Hz Ducky Shine III (MX Brown w/ Red backlights) Kingwin LZP-1000 (1000W) PSU Corsair Carbide Air 540 
Mouse Pad
Razer Goliathus (Precision Control model) - Sta... 
  hide details  
Reply
The 2013 Build
(14 items)
 
  
CPUMotherboardGraphicsRAM
--- SOLD --- --- SOLD ---  --- SOLD --- --- SOLD --- 
Hard DriveOptical DriveCoolingOS
Samsung 850 EVO 500GB ASUS DRW-24B3ST (24X DVD burner) Noctua NH-U14S w/ NH-T1 TIM Windows 10 Pro (x64) 
MonitorKeyboardPowerCase
ASUS VG248QE w/ Lightboost @ 120Hz Ducky Shine III (MX Brown w/ Red backlights) Kingwin LZP-1000 (1000W) PSU Corsair Carbide Air 540 
Mouse Pad
Razer Goliathus (Precision Control model) - Sta... 
  hide details  
Reply
post #4 of 9
Flat base, a couple of degree centigrades better. Definitely not 10 C better by itself.
post #5 of 9
If, in fact, there is increased flow rather than a more inefficient pump, that would make a bit of difference. The Asetek units sold to marketing companies have almost no flow. When flow dips below .5gpm performance falls off a cliff, and the pump used in the H55 (and the like....and yes, that includes the 240/280mm variations) is less than half of that in independent measurements.

And since when is using a manufactured adapter to mount something a "mod"? I guess everyone here who changes their CPU cooler is a "modder"......rolleyes.gif
post #6 of 9
Thread Starter 
Quote:
Originally Posted by geggeg View Post

Flat base, a couple of degree centigrades better. Definitely not 10 C better by itself.

You meant flat vs rough?

Or extruded vs non-extruded ("flat")?

Quote:
Originally Posted by ciarlatano View Post

If, in fact, there is increased flow rather than a more inefficient pump, that would make a bit of difference. The Asetek units sold to marketing companies have almost no flow. When flow dips below .5gpm performance falls off a cliff, and the pump used in the H55 (and the like....and yes, that includes the 240/280mm variations) is less than half of that in independent measurements.

And since when is using a manufactured adapter to mount something a "mod"? I guess everyone here who changes their CPU cooler is a "modder"......rolleyes.gif

Hmm...so, it is the pumps, then? Do you have those "independent measurements"? I'd like to learn a bit more.

Well, a "cliff" maybe in theoretical performance, but pretty much any GPU cooled by an H55 performs far better on GPU die temperatures than anything that comes onto a GPU pre-installed (sans the waterblock ones, hehe).


And, what?...oh, LOL, wrong thread, duuuude. tongue.gif

http://www.overclock.net/t/1203528/official-nvidia-gpu-mod-club-aka-the-mod

Still plenty of zip-tiers out there. And, yeah, you're right: mods slowly turn into products. Any company worth their salt should be taking a look at the good mods, biggrin.gif
The 2013 Build
(14 items)
 
  
CPUMotherboardGraphicsRAM
--- SOLD --- --- SOLD ---  --- SOLD --- --- SOLD --- 
Hard DriveOptical DriveCoolingOS
Samsung 850 EVO 500GB ASUS DRW-24B3ST (24X DVD burner) Noctua NH-U14S w/ NH-T1 TIM Windows 10 Pro (x64) 
MonitorKeyboardPowerCase
ASUS VG248QE w/ Lightboost @ 120Hz Ducky Shine III (MX Brown w/ Red backlights) Kingwin LZP-1000 (1000W) PSU Corsair Carbide Air 540 
Mouse Pad
Razer Goliathus (Precision Control model) - Sta... 
  hide details  
Reply
The 2013 Build
(14 items)
 
  
CPUMotherboardGraphicsRAM
--- SOLD --- --- SOLD ---  --- SOLD --- --- SOLD --- 
Hard DriveOptical DriveCoolingOS
Samsung 850 EVO 500GB ASUS DRW-24B3ST (24X DVD burner) Noctua NH-U14S w/ NH-T1 TIM Windows 10 Pro (x64) 
MonitorKeyboardPowerCase
ASUS VG248QE w/ Lightboost @ 120Hz Ducky Shine III (MX Brown w/ Red backlights) Kingwin LZP-1000 (1000W) PSU Corsair Carbide Air 540 
Mouse Pad
Razer Goliathus (Precision Control model) - Sta... 
  hide details  
Reply
post #7 of 9
Flat vs convex bow, both are extruded copper and then skivved.
post #8 of 9
Thread Starter 
Quote:
Originally Posted by geggeg View Post

Flat vs convex bow, both are extruded copper and then skivved.

Er, OK. I am talking about this extrusion making a difference, on the outside/die side:





Nukemaster mentioned that the latter, second coldplate looks thicker, so maybe that helps with heat transfer?
The 2013 Build
(14 items)
 
  
CPUMotherboardGraphicsRAM
--- SOLD --- --- SOLD ---  --- SOLD --- --- SOLD --- 
Hard DriveOptical DriveCoolingOS
Samsung 850 EVO 500GB ASUS DRW-24B3ST (24X DVD burner) Noctua NH-U14S w/ NH-T1 TIM Windows 10 Pro (x64) 
MonitorKeyboardPowerCase
ASUS VG248QE w/ Lightboost @ 120Hz Ducky Shine III (MX Brown w/ Red backlights) Kingwin LZP-1000 (1000W) PSU Corsair Carbide Air 540 
Mouse Pad
Razer Goliathus (Precision Control model) - Sta... 
  hide details  
Reply
The 2013 Build
(14 items)
 
  
CPUMotherboardGraphicsRAM
--- SOLD --- --- SOLD ---  --- SOLD --- --- SOLD --- 
Hard DriveOptical DriveCoolingOS
Samsung 850 EVO 500GB ASUS DRW-24B3ST (24X DVD burner) Noctua NH-U14S w/ NH-T1 TIM Windows 10 Pro (x64) 
MonitorKeyboardPowerCase
ASUS VG248QE w/ Lightboost @ 120Hz Ducky Shine III (MX Brown w/ Red backlights) Kingwin LZP-1000 (1000W) PSU Corsair Carbide Air 540 
Mouse Pad
Razer Goliathus (Precision Control model) - Sta... 
  hide details  
Reply
post #9 of 9
Thread Starter 
https://www.youtube.com/watch?v=kPIhvfal12g

They took it apart! Turns out it's more about the coldplate being perfectly flat or being slightly bowed to mate with the curvature on AMD/Intel IHSes.
The 2013 Build
(14 items)
 
  
CPUMotherboardGraphicsRAM
--- SOLD --- --- SOLD ---  --- SOLD --- --- SOLD --- 
Hard DriveOptical DriveCoolingOS
Samsung 850 EVO 500GB ASUS DRW-24B3ST (24X DVD burner) Noctua NH-U14S w/ NH-T1 TIM Windows 10 Pro (x64) 
MonitorKeyboardPowerCase
ASUS VG248QE w/ Lightboost @ 120Hz Ducky Shine III (MX Brown w/ Red backlights) Kingwin LZP-1000 (1000W) PSU Corsair Carbide Air 540 
Mouse Pad
Razer Goliathus (Precision Control model) - Sta... 
  hide details  
Reply
The 2013 Build
(14 items)
 
  
CPUMotherboardGraphicsRAM
--- SOLD --- --- SOLD ---  --- SOLD --- --- SOLD --- 
Hard DriveOptical DriveCoolingOS
Samsung 850 EVO 500GB ASUS DRW-24B3ST (24X DVD burner) Noctua NH-U14S w/ NH-T1 TIM Windows 10 Pro (x64) 
MonitorKeyboardPowerCase
ASUS VG248QE w/ Lightboost @ 120Hz Ducky Shine III (MX Brown w/ Red backlights) Kingwin LZP-1000 (1000W) PSU Corsair Carbide Air 540 
Mouse Pad
Razer Goliathus (Precision Control model) - Sta... 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Water Cooling
Overclock.net › Forums › Cooling › Water Cooling › Is there a difference between a coldplate designed for GPUs vs CPUs?