Intel® Solid-State Drive 520 Series
Intel® Solid-State Drive 520 Series
Product Specification February 2012
6Order Number: 325968-001US
Intel® Solid-State Drive 520 Series
2.0 Product Specifications2.1 Capacity
Notes: 1 GB = 1,000,000,000 bytes; 1 sector = 512 bytes.
LBA count shown represents total user storage capacity and will remain the same throughout the life of the drive.
The total usable capacity of the SSD may be less than the total physical capacity because a small portion of the capacity is
used for NAND flash management and maintenance purposes.
2.2 Performance
The data compression engine in the Intel SSD 520 Series controller optimizes
performance based on the data pattern of the workload.
This section provides both compressible and incompressible Input/Output Operations
Per Second (IOPS) and sustained sequential read and write bandwidth specifications.
Notes: 1. Random 4 KB write performance measured using out-of-box SSD.
2. Performance measured using Iometer* with Queue Depth 32. Measurements are performed on
8 GB of Logical Block Address (LBA) range on a full SSD.
3. Performance measured using Iometer with Queue Depth 32.
Table 1. User Addressable Sectors
Intel SSD 520 Series Unformatted Capacity
(Total User Addressable Sectors in LBA Mode)
60 GB 117,231,408
120 GB 234,441,648
180 GB 351,651,888
240 GB 468,862,128
480 GB 937,703,088
Table 2. Compressible Performance
Specification Unit Intel SSD 520 Series
60 GB 120 GB 180 GB 240 GB 480 GB
Random 4 KB Read (up to) IOPS 15,000 25,000 50,000 50,000 50,000
Random 4 KB Write (up to)1IOPS 80,000 80,000 80,000 80,000 50,000
Random 4 KB Write (TYP)2IOPS 23,000 40,000 60,000 60,000 42,000
Sequential Read (up to)3
SATA 6Gb/s
SATA 3Gb/s
MB/s 550
280
550
280
550
280
550
280
550
280
Sequential Write (up to)3
SATA 6Gb/s
SATA 3Gb/s
MB/s 475
245
500
260
520
260
520
260
520
260