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Samsung 850 EVO 2TB Review

Posted August 24, 2015 by Jake in Storage, HDs & SSDs




Sleek and slimline; Innovative features; Fast stock performance; Insane performance with RAPID Mode; Well priced for what you get


It ain't free
Samsung has an excellent overall package here, with great features, innovative technologies, and superb performance.
by Jake
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Results: RAPID Mode

There’s something very special with the 850 EVO that turns on the afterburners and gives a massive performance boost. And indeed there is: RAPID (Real Time Acceleration Processing of I/O Data) Mode. RAPID is a device driver-level feature, and it’s essentially a DRAM caching feature unique to Samsung upper-tier drives. RAPID boosts performance by storing frequently accessed data in your computer’s RAM and then monitoring storage usage patterns. It’s like an extension of the OS cache, but it’s persistent across multiple sessions, even after a system reboot.

Only using a maximum of 25% available RAM (only up to a maximum of 1GB) and about 2-3% CPU overhead, there is no concern about risk due to power loss because it follows Windows flush commands / protocols, just like the OS cache. Unfortunately it doesn’t work in a RAID environment, but RAPID represents a fascinating innovation of system management, whereby the SSD utilitizes idle system resources to improve performance. And interestingly, this happens in the background.

To enable RAPID Mode, simply check the box in Samsung Magician, and then you’ll be prompted for a reboot afterwards. That’s all there is to it.

[Ed Note: RAPID Mode currently only works with Windows 7 and 8, not Win 10 as of yet]

RAPID Mode Results

Let’s now take a look the performance results with RAPID Mode enabled.

First up, ATTO:

Astonishing. Previous speeds were 559MB/s Read and 537MB/s Write, and with RAPID Mode enabled we’re seeing a nearly unbelievable difference at 3555MB/s Read and 3723MB/s Write!

Next up, Crystal Disk Mark:

More of the same here, as results here jump to an absurdly fast 6321MB/s Read and 4239MB/s Write (up from 541 / 522 stock) in the Sequential test.

And with Anvil:

Another insane increase, up from 4,828 stock score to 34,731 with RAPID Mode enabled.

Lastly, let’s see what happens on AS SSD testing:

Another massive jump, with Sequential Read and at 3602 MB/s and 2380 MB/s, respectively (up from 520MB/s Read and 500MB/s Write in stock mode. And look at the overall score increase, from 1091 jumping up to 36568. Wow.

No matter how you slice it, RAPID Mode is a game-changing feature that is nothing short of astounding.

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