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Windows 7: Replacing C drive in Dell Optiplex 980, bus speed question

28 May 2015   #1

Windows 7 Pro 64bit
Replacing C drive in Dell Optiplex 980, bus speed question

Question is about a Dell 980 Optiplex computer running Windows 7 Pro.
The C drive has failed. All I want to know is :
- The bus speed for the SATA drive in the Dell service manual says 1.5gb and 3.0 gb/s
- I purchased a Western Digital Blue WD10EZEX 1TB 7200 rpt 64mb cache SATA 6.0Gb/s internal drive.

What problems would I experience if I install this WD drive into the Dell?
What needs to be done to enable a 6.0Gb/s drive to work with a computer having a bus speed of 3.0Gb/s?

My System SpecsSystem Spec
28 May 2015   #2

Windows 7 Ultimate x64 SP1

You won't notice any speed issues using a 7200 rpm HDD on a SATA II (3 Gbps) port. Now, if you would get an SSD, you would see lower than advertised speeds - as an SSD nowadays is faster than SATA II.
My System SpecsSystem Spec
28 May 2015   #3

Windows 7 Pro x64 Windows 10 Pro x64

You won`t have any problems

You wanna run at 6 Gbps, you have to buy a 6gps sata card.

Not worth the time or money.

SYBA SD-PEX40049 Flex-2-port SATA III 6Gbps PCIe Card, Hard Drive Connectors can be set as External or Internal Ports by Jumpers -
My System SpecsSystem Spec

28 May 2015   #4
Mellon Head

Win 7 Pro x64/Win 10 Pro x64 dual boot

Just plug it in and go. The drive interface will run the drive data rate at half speed, which is fine. 6 GB/s is the max transfer speed for your new drive, but it can easily run at 3 GB/s with no harm to the drive at all.
My System SpecsSystem Spec
28 May 2015   #5

Windows 10 Pro/ Windows 10 Pro Insider

They are all interchangeable. It's a misnomer of a Mechanical Hard Drive running 6 Gb/s. There is no commercially available Mechanical hard drive that can break the sata 3 Gb/s barrier, much less 6 Gb/s. You will have no problems.
My System SpecsSystem Spec
30 May 2015   #6

Windows 7 Pro 64bit

Thank you all for prompt answers!
My System SpecsSystem Spec

 Replacing C drive in Dell Optiplex 980, bus speed question

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