Desktop Test System
Lenovo W530 - Mobile Workstation
We use two systems for SSD testing. The desktop runs a majority of the tests and the Lenovo W530 runs the notebook power test as well as the real-world file transfer benchmark.
ATTO Baseline Performance
Version and / or Patch Used: 2.34
Many manufactures use ATTO to determine the read and write speeds that are used in marketing document and for comparison.
On its own, the 840 EVO 750GB delivers just under 555MB/s sequential read performance and just under 540MB/s sequential write performance.
If you've already read our other review today, then you know we're already fans of NVELO's RAPID Mode software built into Samsung Magician. At first glance, you may think the ATTO run above is an awful showing of performance. At the bottom of the chart you'll notice that the scale changed, now up to 4294 MB/s.
ATTO is a very old (and very wise) program, but it was built long before SSDs or even PCI Express. Once a measurement has gone past 4294MB/s, the program wraps back around and starts at 0. The write performance first wraps around at transfer size 256KB and read performance first 'wraps ATTO' at transfer size 2048KB.
This is the first time we've wrapped ATTO with a single drive. To be fair, RAPID Mode doesn't exactly make it just a single drive, but your computer thinks it's just reading and writing to an SSD.