Originally Posted by maarten12100
The difference here is that it blows trough the fins instead of over them whereas the air can go trough it when it comes in it wouldn't be blown trough it over the full area of the fins. (only test results can tell though)
That's the same fan type as the HD7850 ; if it's a blower the fins looks to be pretty dense = the fan needs to spin up faster to overcome restriction
Originally Posted by Mopar63
Until we actually see this blower design in action how can anyone claim it is bad? I mean I would think the people here would have enough knowledge to understand that cooling is not always about the size or numbers of fans but can also be about a good directed air flow.
The size of the fan matters a LOT as does the heatsink fin area. If you look at CPU cooling, the diameter & number of heatpipes is usually indication of how much heat it can dissipate in addition to the fins' wetted area. (i.e. Megahalems, Archon, NH-U14S)
The ASUS Direct CU II solution on their GTX 760 is louder than one that they put on the GTX 670 because it uses smaller fans. Even for the GTX 680, see this thread http://www.overclock.net/t/1286218/twin-frozr-4-vs-directcu-ii
And for the similar TDP GTX 760:
and another for HD7870/HD7850 http://us.hardware.info/reviews/2853/13/amd-radeon-hd-7850--7870-round-up-cooling-and-noise-production
^ Interestingly, the XFX dual fan cooling solution on their Pitcairn GPUs does well (4 heatpipes and a big heatsink), unlike their Tahiti ones which try to be creative with a vapor chamber thing ; Vapor chamber is a flat heatpipe and is best used to distribute the heat to heatpipes (see Sapphire Vapor-X still has 4 thick heatpipes , heatpipe= phase change). The caveat here is the XFX cooler heats up more even on Pitcairn.
It's not just for AMD, it also applies to Nvidia. Their GTX TITAN blower is louder than all the aftermarket heatpiped heatsinks , some including vapor chambers.
This is an EVGA GTX 660 SC blower (140W TDP):
This is a GTX 660 TI blower (150W TDP)
This is a 7870 reference heatsink , keep in mind 7870 has 175W TDP
ASUS GTX 670 Mini cooling heatsink:
Never mind how huge
the fan on the MSI cyclone is. (GTX460 = 150W TDP)
Basically there's 2 ways to reduce temps because you can't break the rules of thermo: increase efficiency better power delivery components (reference design for AMD is rather good so this won't help as much as on Nvidia cards) , better dissipation due to better heatsink/cooler designEdited by AlphaC - 9/22/13 at 8:41am