SAMSUNG 850 EVO 250GB 2.5-Inch SATA III Internal SSD (MZ-75E250B/AM)

Love this drive - My computer loads in mere seconds and programs open almost instantly. Great addition to my computer.

Out of obsession, Ive run 2 tests on the new 250 GB 850 EVO and the old 120 GB 840 EVO. 2 benchmarks used: Crystal disk mark and HD tune. Below are the results: +++ Crystal disk mark - 840 EVO 120 GB * seq q 32 red/write: 547/518 * 4k d32 read/write: 213/116 * seq read/write: 521/502 * 4K read/write: 31/60 +++ Crystal disk mark - 850 EVO 250 GB * seq q 32 red/write: 543/534 * 4k d32 read/write: 200/180 * seq read/write: 520/478 * 4K read/write: 35/66 Not a big difference, right? Except for the relatively irrelevant in home applications 4K depth 32 queue write, all the values are within the error margin. Which is pretty big, by the way. Running the test multiple times on the same SSD produces numbers up to +-10% different. Now for HD Tune benchmark. Here I could only use 2 tests: sequential read, and random read. For write tests the SSD has to be wiped out. Results: +++ HD Tune results - 840 EVO 120 GB * Sequential read * 154 avg, fluctuates between 32-380. * long sequences of ~60mb, then long sequences of ~330mb. * access time: 0.17 ms * Random read * 4 KB 5800 IOPS, 0.18ms lat avg, 21 MB/s * 64 KB 730 IOPS, 1.37ms lat avg, 45 MB/s * 1 MB 80 IOPS, 12.5ms lat avg, 80 MB/s * 53 ms max access time! * Thats terrible and much sower than what crystal mark shows!!! * 4K read is just 21 MB/s, not 60 as in crystal mark! +++ HD Tune results - 850 EVO 250 GB * Sequential read * 380 MB/s avg, fluctuates between 368-410. * access time: 0.08 ms * Random read * 4 KB 12800 IOPS, 0.078ms lat avg, 50 MB/s * 64 KB 4800 IOPS, 0.208ms lat avg, 300 MB/s * 1 MB 492 IOPS, 2.030ms lat avg, 492 MB/s, 3.38 ms max access time * 3.38 ms max access time! *850 EVO is vs 840 EVO* * 2.5x faster in sequential read * 2.4x faster in 4K random read * 6x faster in 64K random read * 6x faster in 1MB random read * way more constant across all speeds and latencies: * 11x better worst case sequential speed * 15x better worst case latency in 1MB read sequences Pretty shocking, isnt it? No numbers available on the net show so big differences. Repeated the tests multiple times on both SSDs, got pretty small variations. Conclusions: - 850 EVO beats the crap out of 840 EVO. Newer 3D NAND in 850 memory not only improves endurance, but far outperforms the old planar 19 nm TLC NAND in 840 EVO. - Most SSD benchmarks are crap. Just check the results available on the net. I tend to believe HD tune results are trustworthy. At least because tests take longer on HD Tune, so theres less chance of them being limited by interface transfer speed rather than actual SSD speed. Maybe someone has an explanation?

So far so good, lets see how long it lasts.

I love it!!!! My laptop is way faster. I boots in 3 seconds. MS office open faster. Games load faster. Upgrade your hard drives to SSD and turn you old drive into attached storage.

I built two computers using 250 GB Samsung EVO SSDs, and I am pleased with the results.

This is an unbelievable upgrade for an old netbook. I thought there was no way this could possible make that big of a difference in a netbook from 2011. I was dead wrong. It is now actually a pleasant experience to use this device. It came with an old 5400rpm mechanical drive, which makes sense for the segment to which this product was catering. Low cost and low frills. I am not saying this device is a power-house by any means, but it is actually usable now compared to before when I wanted to throw it against the wall while waiting for a website to draw. I did a fresh install of Windows 10 Home 32-bit and it is running great along with the 2GB ram upgrade as well. I am a picky user when it comes to a computer feeling snappy and not laggy. I recommend this to anyone with an old netbook and the want to use it and not hate it. A merge of the OS from the old drive to the new SSD will not be anywhere near as fast as a fresh install, but it should still be an improvement in the day to day usage.

good

Good SSD, Im testing it yet, but until now have been amazing.

My Macbook pro now boot up faster than before, and Final Cut runs very well with this SSD

The pro edition is my favorite but this is second best.