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Old 08-19-09   #1 (permalink)
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Default Cooling Pad for laptop

Alright, so I have a dv9500t that I recently resurrected from the dead via a heat gun reflow on the gpu (8600m gs) [RANT: These have been failing like crazy, but HP is not standing behind their product. Support Forum (over 1000 replies)]

Anyways, I've got a couple 140mm fans that I'd like to use as a cooling pad for it. I have a few old PSU's, but they are big and bulky.

I'd like a more elegant way to power these fans. Are there small power supplies I could use for this? Or is there a way to power these fans off the USB ports on the laptop?
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System: Lemurs, man. Lemurs.
CPU
E8500 C0 @ 4.28 GHz
Motherboard
Asus Rampage Formula (x48)
Memory
2x 2gb, DDR2 1066, G.Skill
Graphics Card
VisionTek 4870
Hard Drive
1Tb Black | 1Tb F1 | 500gb ST
Sound Card
Supreme FX II
Power Supply
Antec Truepower 850w
Case
NZXT Tempest
CPU cooling
ApogeeGTZ, GTX360, MCP655
GPU cooling
DD Block
OS
Vista Ult. x64
Monitor
Asus 24" MK241H

Last edited by mtbhrd : 08-19-09 at 01:49 PM
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Old 08-19-09   #2 (permalink)
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The USB ports supply 5VDC. Most PC fans are designed to run on 12VDC and will not run correctly off 5V; though you can buy fans that are speced for 5V, which would be ideal for powering off of the USB.

Other options would be to get a 12VDC power brick (wall transformer), but this would mean that you'd always be tethered and couldn't run solely off of the battery power.
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System: RAD GT
CPU
Q6600 G0
Motherboard
DFI Lanparty UT 680i SLI LT T2R/G
Memory
2x1Gb DDR2-1150 OCZ Reaper
Graphics Card
2x BFG 8800 GTX OC
Hard Drive
250Gb SATA | 3x 500Gb SATA | 750Gb SATA
Sound Card
Creative X-Fi XtremeGamer
Power Supply
SilverStone Strider ST1000
Case
DIY -- Acrylic
CPU cooling
DangerDen TDX
GPU cooling
DangerDen 8800GTX waterblocks
OS
Windows XP X64/Windows XP Pro
Monitor
Samsung 226BW
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