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Alphacool HF 14 ATI/NVidia Smart Motion Universal. Does any one have more info? - Page 4

post #31 of 34
I got around redoing my loop yesterday. Got a leak from this block twice in a row - although it seemed to be the case of a bad O-ring on two separate fittings I used and third one did not leak at last. Downside is that it spilled some coolant on my two bottom cards so I let it dry overnight and leak test. Booted up this morning without explosion so .. well .. hopefully I'm in clear by now.

Anyway, it does indeed fir on Sapphire 7950 with that heatspreader on

Have not tried load testing, still monitoring my stuff at idle atm. For idle the temps are sort of normal.
Created with GIMP

The Alphacool block is firmly 3 slot business, no way in hell can you get away with it with just 2 slots without shorting something out under it as the mounting screws are slightly longer than the block itself. I used an additional copper plate as needed for fitting core only block on 7950/7970 cards bcos of the rised rim around the core. The 6770 is with an old northbridge block, the 7870 is heatkiller core x3 and well - 7950 is with this block.

Edit: Did a short load test with OCCT on 7950, it got as high as 49C during 1 min test (water temp approx 18C) which is approx 30C above ambient. Thats quite decent, especially considering that the paste has not cured yet and I have that additional 0.5 mm copper plate between the block and the die. So - in my opinion its as good block as any, if you can live with it taking 3 to 4 slots in your PC. Approx 30 C above ambient is in my impression the ballpark where most GPU's settle under water at stock or light overclocks. Regardless of block used - the old northbridge block I used on 6770 performs the same. Have not tested yet the heatkiller one as atm the 7870 does not have any display hooked up to it. It is 5C lower tho than 7970 at stock, but keep in mind that it also clocks lower when idle (500 MHz on 7950 vs 150 MHz on 7870 when idle).
Edited by Carniflex - 9/18/13 at 4:14am
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post #32 of 34
Nice work! As I see you were smarter than me and installed the block with the acool logo horizontally (I did it vertical and regreted it rolleyes.gifrolleyes.gif ). Sorry to hear about the leak I know how frustrating this can be. I thought I had a leak because the coolant on my res kept decreasing (slightly but still) but I think there must have been some air trapped that eventually gave way for coolant.
post #33 of 34
thank you guys for sharing
post #34 of 34
Now that I have tested it for a bit more I'll say that as expected, the block does not knock your socks off but its gets the job done. Having dialed my 7950 to 1200 / 1475 (core/memory) it will settle at around 62 C eventually. Not stellar, but decent enough. That is with EK copper shim and with average quality paste which name I don't remember - was supposed to be very tolerant towards questionable contact pressures giving consistent performance across wide range of these.

Highly restrictive loop (Nova 1080 rad, EK Supermacy CPU blocks, 2 more GPU core blocks in addition to this one, a lot of fittings and some quick disconnect which basically press the whole loop flow through a 3 mm diameter hole) and 3x DC-LT Alphacool pumps at approx 2400 rpm (max they go is 3600 I think).
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Crucial M4 64 GB Barracuda 4 TB Sythe big shuriken rev B Windows 7 Pro 64 bit 
MonitorMonitorMonitorMonitor
DELL U2311H (x3) DELL U2312HM (x2) 9.7'' 2048x1536 (x3) IPAD3 retina Asus PB287Q 4K 
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CM Quickfire TK (red) Corsair AX-1200i Modded Sharkoon VS-3 Logitech G700s 
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Intel Core i7 3820 X79-UP4 Gigabyte 390X G1 Club3D 7870 Eyefinity 6 
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64 GB Barracuda 3 TB WD Green 3 TB Crucial M4 256 GB 
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Crucial M4 64 GB Barracuda 4 TB Corsair LE 480HB Sythe big shuriken rev B 
CoolingCoolingCoolingOS
Nexxos 280mm radiator DC-LT Alphacool GPX 390M04 Windows 7 Pro 64 bit 
MonitorMonitorMonitorMonitor
DELL U2311H (x3) DELL U2312HM (x2) 9.7'' 2048x1536 (x3) IPAD3 retina Asus PB287Q 4K 
KeyboardPowerCaseMouse
CM Quickfire TK (red) Corsair AX-1200i Significantly modded Jupiter .. something alumi... Logitech G700s 
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3M Ergonomic 
CPUMotherboardGraphicsGraphics
Intel Core i7 3820 X79-UP4 Gigabyte 390X G1 Club3D 7870 Eyefinity 6 
RAMHard DriveHard DriveHard Drive
64 GB Barracuda 3 TB WD Green 3 TB Crucial M4 256 GB 
Hard DriveHard DriveCoolingOS
Crucial M4 64 GB Barracuda 4 TB Sythe big shuriken rev B Windows 7 Pro 64 bit 
MonitorMonitorMonitorMonitor
DELL U2311H (x3) DELL U2312HM (x2) 9.7'' 2048x1536 (x3) IPAD3 retina Asus PB287Q 4K 
KeyboardPowerCaseMouse
CM Quickfire TK (red) Corsair AX-1200i Modded Sharkoon VS-3 Logitech G700s 
Mouse Pad
3M Ergonomic 
CPUMotherboardGraphicsGraphics
Intel Core i7 3820 X79-UP4 Sapphire 7950 FleX OC XFX 6770 Eyefinity 5 
GraphicsRAMHard DriveHard Drive
Club3D 7870 Eyefinity 6 64 GB Samsung 750 GB F3 Barracuda 3 TB 
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WD Green 3 TB Crucial M4 256 GB Crucial M4 64 GB Barracuda 4 TB 
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Custom loop Windows 7 Pro 64 bit DELL U2311H (x3) DELL U2312HM (x2) 
MonitorMonitorKeyboardPower
9.7'' 2048x1536 (x3) IPAD3 retina Asus PB287Q 4K CM Quickfire TK (red) Corsair AX-1200i 
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Modded Chieftec Smart WH-02B-B-OB Logitech G700s 3M Ergonomic 
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Overclock.net › Forums › Cooling › Water Cooling › Alphacool HF 14 ATI/NVidia Smart Motion Universal. Does any one have more info?