System Profiler (Serial-ATA) will give you the drive model number. From that you can Google all the specs for that drive.
The drive is empty and defective, but can mount alright.
In Target mode the SP shows this:
Target Disk Mode:
Manufacturer: AAPL
Model: 0x54444D
GUID: 0xC82A14FFFE9811F6
Maximum Speed: Up to 800 Mb/sec
Connection Speed: Up to 800 Mb/sec
Sub-units:
Target Disk Mode Unit:
Unit Software Version: 0x10483
Unit Spec ID: 0x609E
Firmware Revision: 0x0
Product Revision Level: 0
Sub-units:
Target Disk Mode LUN:
Capacity: 1 TB (1,000,204,886,016 bytes)
Removable Media: Yes
BSD Name: disk7
Partition Map Type: GPT (GUID Partition Table)
S.M.A.R.T. status: Not Supported
Volumes:
disk7s1:
Capacity: 209.7 MB (209,715,200 bytes)
BSD Name: disk7s1
Content: EFI
MacBook Pro:
Capacity: 999.86 GB (999,860,912,128 bytes)
Available: 999.2 GB (999,197,212,672 bytes)
Writable: Yes
File System: Journaled HFS+
BSD Name: disk7s2
Mount Point: /Volumes/MacBook Pro
Content: Apple_HFS
Target Disk Mode Unit:
Unit Software Version: 0x10483
Unit Spec ID: 0x609E
Firmware Revision: 0x0
Product Revision Level: 0
Sub-units:
Target Disk Mode LUN:
..as you can see, I can't tell the RPM. I just don't want to buy a 5400RPM if this drive is 7200RPM - it needs to be a comparable swap.
thanks