Samsung 850 EVO M.2 Performing Badly

[cbowlan]

Built a new PC... Put some pretty good stuff into it (from what I thought). Ran a benchmark from UserBenchmark.com. I don't think it's an entirely reliable source of statistics, but it does have one constant: SSD falling below performance expectations.

My computer is fast. I don't know how fast it should be, but User Benchmark does. Here is what I've got goin' on:


Intel Core i7-7700K
23,753 User benchmarks - Average bench 100%
LGA1151, 1 CPU, 4 cores, 8 threads
Base clock 4.2 GHz, turbo 4.5 GHz (avg)
Performing above expectations (62nd percentile)
101%
Outstanding


G.SKILL F4 DDR4 3200 C15 2x8GB
47 User benchmarks - Average bench 88%
2 of 4 slots used
16GB DIMM DDR4 clocked @ 3200 MHz
Performing above expectations (64th percentile)
100%

Looking pretty good so far... Right?


Samsung 850 EVO M.2 250GB
3,641 User benchmarks - Average bench 94%
126GB free
Firmware: EMT21B6Q Max speed: SATA 3.0 600 MB/s
SYSTEM NCQ 4KALIGNED SSD TRIM S.M.A.R.T
Performing way below expectations (19th percentile)

79.9%
Very good
Read 498
Write 403
Mixed 415
98% 439 MB/s
4K Read 28.2
4K Write 38.2
4K Mixed 18.1
86% 28.2 MB/s
DQ Read 171
DQ Write 269
DQ Mixed 15.9
69% 152 MB/s

So, is it just bad hardware... What are your thoughts?

 

[marko55]

I've heard of others showing poor numbers for their SSDs using that tool.

Install Samsung Magician and do the performance test in there. That should show you what you're really getting in both sequential read/write and IOPS.

 

[cbowlan]

I've heard of others showing poor numbers for their SSDs using that tool.

Install Samsung Magician and do the performance test in there. That should show you what you're really getting in both sequential read/write and IOPS.

I ran it and enabled RAPID. It did not change the User Benchmark. It seems to be performing just fine to me. Oh, well!