No IOPS info anywhere to be found from my quick search. Anw.. Edit: LOL! Found the info on on Ebay from a Seller in Israel? I don't know how credible it is but it looks legit. SanDisk X210 256GB features: Leading edge 19nm NAND flash technology SATA Revision 3.0 (6Gb/s) connectivity Up to 505/445MB/s sequential read/write performance Ideal for storage or dual-drive caching applications Form Factors: Cased 2.5 inches (7mm) Interface: SATA Revision 3.0 (6 Gb/s) backward compatible to SATA Revision 2.0 (3 Gb/s) and SATA Revision 1.0 (1.5 Gb/s) 4K random Read/Write: Up to 81,000 / 44,000 IOPS MTBF Up to 2,000,000 hours Size (Cased 2.5"): 7.0mm x 69.85mm x 100.5mm Weight Cased 2.5": Up to 39.5 g Certifications: FCC, CE, UL, ULc, TUV, KC, BSMI, ACA, VCCI