Per un MacBookPro8,2 (15 inch, Late 2011) vorrei sostituire l'HD originale con altro più capiente. Il sistema operativo è Sierra 10.12, ecco le caratteristiche dei 2 HD:
Primo HD 2,5" (originale): Hitachi 500 GB (modello HTS545050B9A302, revisione PB4AC60Y)
Interface: SATA-3 / 6Gb/s
Capacity (GB) 500
Sector size (variable, Bytes/sector) 512e
Recording zones 30
Max Areal Density (Gbits/sq. in.) 636
Performance:
Data Buffer (MB) 8
Rotational Speed (RPM) 5400
Latency Average (ms) 5.5
Media transfer rate (Mbits/sec, max) 1087
Interface transfer rate (MB/sec, max) 600
Seek Time (read, ms, typical) 13
Seek time: Track to track (typical) ms (read) 1
Seek time: Full Stroke (typical) ms (read) 25
Reliability
Power on hours (POH) per month N/A
Load/Unload Cycles 600,000
Acoustics:
Idle (Bels) 1.9
Operational (Bels, typical) 2.1
Power
Requirement +5VDC (+-5%) +5VDC
Startup (W, peak, max) 4.5
Read/Write (W, avg) 1.6
Low power idle (W, avg) 0.55
Standby (W, avg) 0.2
Seek (W, avg) 1.8
Active Idle (W, avg) 0.8
Performance Idle (W, avg) 1.5
Sleep (W) 0.1
Physical size
Z-Height (mm) 7
Dimensions (width x depth, mm) 700 x 100
Weight (g, max) 95
Environmental (operating)
Ambient temperature 0º - 60ºC
Shock (half-sine wave) 400G/2ms, 225G/1ms
Environmental (non-operating)
Ambient temperature -40° - 65° C
Shock (half-sine wave) 1000G/1 ms
Secondo HD 2,5": WD 640 GB Scorpio Blue (modello WD6400BEVT-00A0RT0, revisione 01.01A01)
Product Description: Western Digital Scorpio Blue WD6400BEVT 640 GB Internal Hard Drive - SATA/300 - 5400 rpm - 8 MB Buffer - 2.5inch - Hot Swappable. Scorpio Blue WD6400BEVT Hard Drive offer high-performance, low power consumption and cool operation, making them ideal for notebooks and other portable devices. Pick the drive that suits your needs with the confidence in knowing that this Scorpio Blue drive built to the highest standards of quality and reliability.
Product Identifiers
Brand Western Digital
Model WD6400BEVT
MPN 1245032000
Key Features
Internal/External: Internal
Drive Capacity: 640 GB
Interface: Serial ATA II
Rotation Speed: 5400 RPM
Type: Laptop Computer
Buffer Size: 8 MB
Technical Features
Internal Data Transfer Rate: 97 Mbit/s
External Data Transfer Rate: 2400 Mbps
Form Factor: 2.5"
Seek Time: 5.5 ms
Sound Emission: 24 dB
Other Features
Additional Features S.M.A.R.T Technology, Shock Resistant