How is this possible?

luciano-lopes

Prominent
Nov 23, 2017
2
0
510
How are these speeds possible?
I have an Samsung 850 EVO so maximum speed is 540mb/s
With RAPID on it should be 1.5 times faster so that would be around 1250mb/s
But it is reading/writing at 7146mb/s since I replaced my power supply, howww???
This thing is writing faster than 2 NVMe's in Raid 0.

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CrystalDiskMark 6.0.0 x64 (C) 2007-2017 hiyohiyo
Crystal Dew World : https://crystalmark.info/
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* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

Sequential Read (Q= 32,T= 1) : 7056.126 MB/s
Sequential Write (Q= 32,T= 1) : 7146.004 MB/s
Random Read 4KiB (Q= 8,T= 8) : 2813.639 MB/s [ 686923.6 IOPS]
Random Write 4KiB (Q= 8,T= 8) : 2133.010 MB/s [ 520754.4 IOPS]
Random Read 4KiB (Q= 32,T= 1) : 752.559 MB/s [ 183730.2 IOPS]
Random Write 4KiB (Q= 32,T= 1) : 321.074 MB/s [ 78387.2 IOPS]
Random Read 4KiB (Q= 1,T= 1) : 757.742 MB/s [ 184995.6 IOPS]
Random Write 4KiB (Q= 1,T= 1) : 325.582 MB/s [ 79487.8 IOPS]

Test : 1024 MiB [C: 36.3% (151.9/418.2 GiB)] (x5) [Interval=5 sec]
Date : 2017/11/23 23:27:55
OS : Windows 10 Professional [10.0 Build 16299] (x64)
 
Solution
RAPID mode is just timing using RAM as a buffer. Benchmark tests are not valid with RAPID mode because the timing is for the RAM and not the disk.