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New fan for 6850

post #1 of 6
Thread Starter 
Hey guys

I've got a MSI R6850 Cyclone Power Edition in my pc
I've gotten some upgrades for my pc recently to make it run a bit better
and quieter, only problem is once the fan speed on the card goes above
about 60%, it starts to get kinds loud, and i was wondering if i could
possibly replace the default fan with maybe a........noctua

not too sure what the dimensions of the fan are, also not sure if this
is even possible or would make any difference


Thanks in advance
post #2 of 6
If you want a silent GFX card.
http://www.overclock.net/t/1203636/amd-ati-gpu-mod-club-aka-the-red-mod
post #3 of 6
you could possibly zip-tie a fan onto the heat sink, preferably a 80mm fan or it will be too big.

like this 480
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post #4 of 6
Phenomanator53 suggested a good idea (+rep) but I like to further refine it.

1) The stock design relies on the fan to push air downward to the heatsink directly underneath as well as to push air sidewards (ie radially) so that the fins will be cooled. The latter is important as the main heat carrying elements (ie the 2 heatpipes) actually transport the heat to the fins.

2) When a stock Noctua fan is used as shown above, its frame will basically block any radial air movement, thus severely reducing the cooling efficiency. In other words, the green-to-red air movement is severely reduced. This is critical due to point (1) above.
480

3) Therefore, I propose to remove the frame of a Noctua by cutting the four spokes (shown blue in the pic). Note the cables must not be cut.
588

4) The frameless fan can then be mounted to the heatsink by aligning the four spokes with the current 3 screw holes (red circles in pic) or un-used holes (red arrows).
480

5) Lastly, as the original fan is a 90mm fan, I suppose using a 92mm Noctua fan is possible and would be better than a 80mm fan.
Edited by windfire - 4/21/12 at 7:12am
post #5 of 6
Quote:
Originally Posted by windfire View Post

Phenomanator53 suggested a good idea (+rep) but I like to further refine it.
1) The stock design relies on the fan to push air downward to the heatsink directly underneath as well as to push air sidewards (ie radially) so that the fins will be cooled. The latter is important as the main heat carrying elements (ie the 2 heatpipes) actually transport the heat to the fins.
2) When a stock Noctua fan is used as shown above, its frame will basically block any radial air movement, thus severely reducing the cooling efficiency. In other words, the green-to-red air movement is severely reduced. This is critical due to point (1) above.
480
3) Therefore, I propose to remove the frame of a Noctua by cutting the four spokes (shown blue in the pic). Note the cables must not be cut.
588
4) The frameless fan can then be mounted to the heatsink by aligning the four spokes with the current 3 screw holes (red circles in pic) or un-used holes (red arrows).
480
5) Lastly, as the original fan is a 90mm fan, I suppose using a 92mm Noctua fan is possible and would be better than a 80mm fan.

495
this would be better because
1. mounting the fan after cutting the frame would be tricky, so just cut off the areas marked.
2. it helps direct air to those 2 heatsinks other than to everywhere around it.
Vaporizer
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8GB 1600Mhz CL11 Samsung ST1000LM035 Intel 530 Series 120GB Windows 10 Pro 
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Dell U2515H Fractal Design Edison M 550W In Win 303 White NZXT Hue+ 
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Vaporizer
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CPUMotherboardGraphicsRAM
4670K  Gryphon Z87 GTX 980 8GB 1600MHz CL11 Kingston  
RAMHard DriveHard DriveOS
8GB 1600Mhz CL11 Samsung ST1000LM035 Intel 530 Series 120GB Windows 10 Pro 
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Dell U2515H Fractal Design Edison M 550W In Win 303 White NZXT Hue+ 
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post #6 of 6
Thread Starter 
Hey guys thanks for the great ideas,

i think the problem however is the air movement, its that sort of sound,

the stock fan on the cooler doesn't make any mechanical sounds and

what i'm hearing is a rushing air sound,

think i might go with bmgjet's idea of the red mod

thumb.gifthumb.gif
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