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Windows 7: Will the Pc1x1 connection limit the speed of this Device

03 Dec 2011   #1
kodi

Windows 10 Pro x64
 
 
Will the Pc1x1 connection limit the speed of this Device

Astrotek PCI Express SATA III 2 Port Low Profile Card [AT-CPES6A] - $26.00 : PC Case Gear
Also will this card be limited to PCIex1 speed if plugged into a PCIex1 motherboard slot
ASRock SATA III PCIe Card [AR-SATA3-CARD] - $29.00 : PC Case Gear


My System SpecsSystem Spec
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03 Dec 2011   #2
Sub Styler

Windows 7 Ultimate x64
 
 

It really depends on the drive(s) you are connecting to it. The PCIE-1x slot if (1.0) will have a single direction max rate of aprox 266MB/s and if (2.0) 532MB/s.

This will be fine for 7200rpm Hard Disks but if you were planning on one or more 500MB/s SSD's then the bus-width would limit you.

The devices only claim to be compatible with a PCI-E x1 (2.0) interface.
My System SpecsSystem Spec
03 Dec 2011   #3
kodi

Windows 10 Pro x64
 
 

It's confusing because the Manufacturer claims that if you use a PCIex1slot you can obtain PCIex2 speeds (sata3),is it possible the card boosts the speed
My System SpecsSystem Spec
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03 Dec 2011   #4
Sub Styler

Windows 7 Ultimate x64
 
 

Please link to where it claims this?

It has 2x Sata III ports on it. But cannot transfer data across the board faster than the max speed of a single PCIE lane.

Depending on the controller on the card, two drives using it may well be able to transfer at full speed between each other.

EDIT: It wouldn't be the first device to be sold with a bottle neck.
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 Will the Pc1x1 connection limit the speed of this Device




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