Something right about my SSD

SamiHAlTer

Reputable
Jan 21, 2015
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4,510
Hello!

I have a Samsung 840 Evo 500 GB SSD. Usually I get Scores of around 200-500 MBps for both read and write tests. I used Samsung Magician to run the tests. I was checking some SSDs on userbenchmark.com, and thought I might as well download their benchmarking software mainly to compare my SSD to the scores they have on their website.

This is the SSD result for the first benchmark test:
Screenshot_2015_01_21_20_43_572.png


And for further evidence, here's the link to the test:
http://www.userbenchmark.com/UserRun/142583


I thought the software glitched somehow, so I figured I should run the test again:
Screenshot_2015_01_21_20_50_542.png


I closed every other running software to improve my CPU and graphic cards score, but apparently it even improved the SSD's score. Here is the link for the test:
http://www.userbenchmark.com/UserRun/142586

Then, I thought the software itself is bogus, and to confirm that I ran the test on Samsung Magician which used to give me less than 500 MBps on both read and write speeds. To my surprise, even Samsung Magician showed similar results:
Screenshot_2015_01_21_20_54_57.png


To make sure I'm not going crazy, I looked at the history of Samsung Magician, and I was right. something did change with the SSD's benchmark results:
Screenshot_2015_01_21_20_56_17.png


I even restarted my PC, and re-ran Samsung's test. Again, similar results:
Screenshot_2015_01_21_21_09_29.png


___________________________________________________________________________

Now, my question is, can anyone explain why I am getting these results? Is there a better way/ software (free, please) that I can use to get accurate results?
 
Still similar results for sequential write/read. Though the 4K results looks reasonable. Only ran the benchmark on AS SSD. Too lazy to run on the other one you suggested.

Screenshot_2015_01_21_22_21_44.png


[UPDATE]
I tried Atto Bench32. I got even more ludicrous results.
Screenshot_2015_01_21_22_29_07.png
 
Are you using AHCI or IDE in your bios? If you are running IDE mode you may see a little lower performance. Ideally when you first went to install Windows you would select the option in the bios "if" the board did not select it automatically. Newer boards should, but older boards may default to IDE.

You can edit the registry to change it though. Check this out: http://www.sevenforums.com/tutorials/61869-ahci-enable-windows-7-vista.html

If you want to make sure that you are running AHCI, load up AS-SSD and look at the top left corner. It should have what mode is running there.
 


I had it on for a long, if I'm not mistaken. Best results I had before, with Rapid Mode was sub 500 MBps. Even that were the case, can Rapid Mode really increase the write speed to 4000+ MBps? I mean, is anybody else with the same SSD experiencing the same situation?
 


RAPID mode creates a cache. When data is read and written within that cache, then it will read/write at that speed, but not many ppl use high enough queue depths to see that speed in real world situations. to get a proper reading of your drive speed, test with RAPID mode disabled.
 


You are absolutely right. Now the tests are showing proper results. Didn't expect RAPID Mode to cause that. The more you know.
Also Benchmarking software should really check for RAPID Mode.

Here's the proper results (Just skip to the SSD section):
http://www.userbenchmark.com/UserRun/143178

And here's AS-SSD's Results:
as_ssd_bench_Samsung_SSD_840_1_22_2015_2_03_28.png
 


It did. If you look at the User benchmark you posted, it says "RAM cached drive detected" next to component status.
 


Oh. THAT what is was about. They only mentioned it was a security risk, rather than benchmark spoofing warning. Even better, a form of test to null it's false effect on benchmarking. Anyway, I'm satisfied with the answer :). Thanks a bunch.