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Slow USB3 write speeds w/ Windows 8

post #1 of 2
Thread Starter 
In Windows 8 my max write speed to a USB 3.0 Hard drive is about 20 MB/s which is far too slow. Read speeds and transfers to my internal SSD are great, going about 115 MB/s.

Under Windows 7, I would see far faster write speeds.

Some of the facts are I am using an Ivy Bridge Laptop with Intel USB3. Under windows 8 I am using the default MS USB 3 drivers. So far, Intel does not make USB 3 drivers for Windows 8. When I was running Windows 7, I was using the latest USB 3 drivers from Intel's site. (v 1.5).

Anyone else having this issue and maybe found a fix? I am almost positive it has to do with the drivers but just curious.

Thanks
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6950X
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Intel 6950X @ 4.3 (100x43) ASUS Rampage V Extreme Geforce 1080Ti Founders Edition Geforce 1080Ti Founders Edition 
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Windows 10 Anniversary Edition Acer Predator 27" 1440p 144Hz x2 Razer Blackwidow Ultimate Corsair AX1500i 
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post #2 of 2
It's drivers. I'm running 8 on my Vizio 15.6 inch ultrabook and the USB 3.0 on Win 8 isn't very good.
Heisenberg
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Heisenberg
(10 items)
 
Redemption
(18 items)
 
 
CPUGraphicsRAMHard Drive
Intel Core 2 Extreme @ 2.8GHz (upgrade) Intel GMA 950 2 x 2 DDR2 667MHz (upgrade) 120GB Mushkin ECO2 
Optical DriveOSMonitorPower
Replaced with 42 W/hr aux battery Mint 17.3 1280x800 Dell 65w Dell Adapter 
CaseOther
Latitude D630 Chassis Intel 7260-802.11ac 2x2 
CPUMotherboardGraphicsRAM
Not telling AsRock something Pixel Pusher 2 x 8 GB AMD Radeon RAM @ 1600mhz (All the VM's) 
Hard DriveHard DriveHard DriveOptical Drive
Crucial M4 128GB (8 second boot) Western Digital RE4 1TB Western Digital RE4 2TB Pioneer Blu-Ray Reader/Writer 
CoolingOSMonitorKeyboard
Cooler Master Hyper 212 Evo Windows 8.1 Pro x64 Dell U2713HM IBM Model M (CLICKY!!) 
PowerCaseMouseAudio
Antec HCG-900 NZXT Source 210 (it was cheap) Logitech G502 Schiit Modi 
AudioAudio
Sennheiser HD 598 M-Audio AV40's 
CPUMotherboardGraphicsRAM
Intel Core i5-4200U Microsoft BGA1168 Intel HD 4400 8 GB LPDDR3 Dual Channel @ 1600mhz 
Hard DriveOSMonitorKeyboard
SK Hynix 256GB SSD Windows 8.1 Professional 1920 x 1080p IPS Display Microsoft Touch Cover 2 
Power
48w PSU 
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