90Y8878 Technical Specifications
Manufacturer IBM
Product Type Internal Hard Drive
Form Factor 2.5-inch
Capacity 300 GB
Hot Swap
Data Transfer Rate : 6Gbps
Spindle Speed 10000 RPM
Drive Interface Type SAS 6.0 Gbps
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90Y8878 Lenovo/ associative 90Y8877 300GB 10K SAS 2.5 inch hard disk
$215
Manufacturer IBM
Product Type Internal Hard Drive
Form Factor 2.5-inch
Capacity 300 GB
Hot Swap
Data Transfer Rate : 6Gbps
Spindle Speed 10000 RPM
Drive Interface Type SAS 6.0 Gbps

With 7mm ultra-thin hard drives all the rage, Hitachi aims to blast one out of the park with its new 500GB single-platter Z5K500 – that’s right, 500GB on a single platter. Getting to this higher capacity in such a slim package has been a big deal for drive manufactures, since in the 7mm drive space you are limited to a single drive platter, instead of two in a 9.5mm drive or three in a 12.5mm drive. While capacity might be the biggest selling point of this drive, it is also important to see how well it does in the performance category.

The Western Digital WD2500BHTZ is a high‑performance 250 GB internal hard disk drive from Western Digital’s legendary VelociRaptor family, engineered for users who need faster access and responsiveness than traditional 7200 RPM drives can provide. Unlike standard desktop HDDs, the VelociRaptor spins at a blistering 10 000 RPM and features a SATA III 6 Gb/s interface, allowing it to deliver sustained data throughput and quicker read/write access that benefits workstations, creative applications and performance‑oriented systems.
Whether installed in a desktop chassis or integrated into a high‑performance storage array, the delivers a notable combination of rotational speed, cache efficiency and sustained throughput that makes it a strong choice for applications where traditional HDDs fall short.
Room to Spare
Securely load and store up to 2TB of important files on Micron NAND in a tiny M.2 form factor.
Vital Performance
NVMe PCIe technology delivers sequential read/write speeds up to 2,000/1,750 MB/s so work gets done faster.
Lasting Value
The Crucial P1 SSD is designed to be the only storage upgrade you’ll need with an affordable blend of performance and capacity.
One of the Largest Storage Manufacturers Worldwide
Crucial is backed by Micron’s expert quality and engineering innovation. Micron has produced some of the world’s most advanced memory and storage technologies for 40 years.

The range of scores (95th – 5th percentile) for the WD Blue 2.5″ 320GB (2009) is 27.9%. This is a relatively narrow range which indicates that the WD Blue 2.5″ 320GB (2009) performs reasonably consistently under varying real world conditions.
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