The 120GB Sandisk Extreme II proved to be a disappointment. I was expecting the same blistering performance as I saw on its larger 240GB sibling but that proved not to be the case. Comparing the 120GB and 240GB Extreme II's reveals that the larger 240GB version has peak speed ratings that are approximately 35% faster that the 120GB Extreme II. The main weakness of the 120GB Extreme II is its sequential write speed which is just 305 MB/s vs 492 MB/s on the 240GB version. Reduced write ability at lower capacities is explained by fewer NAND modules which reduce a controllers ability to parallelize slow write operations across different memory banks. Overall the Sandisk Extreme II sits amongst the bottom 20% of performers in the 120-128GB capacity category. Several of the drives in the group test have comparable performance at both the 120 and 240 GB capacities, those drives are the ones to go for. [Feb '14SSDrivePro]
The Adata Premier SP610 sports a Silicon Motion SM2246EN controller coupled with 20nm Micron flash memory, a similar combination to Crucial's recent BX100 which uses slightly slower 16nm NAND. Comparing the 256GB versions of the BX100 and SP610 shows that although the two drives are fairly evenly matched, the SP610 edges ahead in most categories (so far I have only seen only 10 samples of the SP610 so this may change with time). Although comparing the SP610 and Samsung 850 Evo highlights relatively low write speeds on the SP610 it also shows that the Adata Premier SP610 isn't far behind the market leading Evo. The SP610 has a respectable performance profile and, at current prices it's one of the best value for money SSDs available. [Mar '15SSDrivePro]
Welcome to our 2.5" and M.2 SSD comparison. We calculate effective speed for both SATA and NVMe drives based on real world performance then adjust by current prices per GB to yield a value for money rating. Our calculated values are checked against thousands of individual user ratings. The customizable table below combines these factors to bring you the definitive list of top SSDs. [SSDrivePro]
Welcome to our PC speed test tool. UserBenchmark will test your PC and compare the results to other users with the same components. You can quickly size up your PC, identify hardware problems and explore the best value for money upgrades.