Help! Samsung SSD 840 Evo 1TB slow performance!

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directrespect

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May 21, 2014
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I just purchased this SSD about a week ago and I discovered that its performing very poorly due to running the performance benchmark test using the samsung magician tool. I have looked around and haven't found an answer I am looking for or anything that would suggest why its running slow.
Yes TRIM IS enabled.
Yes I am hooked to the correct SATA 3 port on the mobo and AHCI is enabled in BIOS from the get.
Yes I have Rapid Mode enabled and the OS optimization is set for maximum performance.
I am only using 158GB of 931GB. Any suggestions would be very helpful! I will post a screenshot below of my benchmarks.
GuTcn0V.jpg
 
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TheChick3n

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Apr 22, 2014
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If you think about it, you can have a lot of background procecs using the SSD. When the SSD is being used alot, it can only go so fast, and your MB only has 3-6 GB/s and it can be used up. Give it over night left on, then in the morning try again.
 
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Dblkk

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Oct 30, 2013
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Samsung ready cache enabled? That's the major part of its speed boost. Plus how much ram do you have, since ready cache uses ram to accelerate its speed. I have a 1tb Samsung evo for data drive on laptop and one for boot on laptop. Boot drive gets 600-800 mbps read/write with 10gb ram dedicated to it. Data drive gets 200-300mbps max on read write, due to no software control on nonboot/os drives. Plus I get no trim with data drive either, although there are a few other programs that 'optimize' which is basically trim. But ready cache and your amount of ram (speed of ram as well) are the determining factors on a Samsung evo drive speeds.
 
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directrespect

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May 21, 2014
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I have 16gb of ram and I am not familiar with Samsung ready cache
 
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Dblkk

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It should be included in their magician software. Not sure what part of it its actually under, but it uses system memory for cache boost. Its only good for small files/benchmarks though. If your benchmarks crap, is there anyway you can transfer files from somewhere on ssd to another device with over 300mbps transfer speed? If the file transfer is 300 or higher you know the drive is fine and the benchmark is just crap. Plus my benchmarks say 600-800, yet I never never get that for file transfer or any video rendering which gets outputted to a raid nas server that should have transfer speed above 800mbps. Benchmarks and the evo are crappy drives. Not crappy as in shit, but they're software enhanced speedy drives. Take away the software and they're not to impressive. The 840 pro is a beast of sad with no special tricks. But limited to 500gb and double the price. The evo is the way to go, don't get me wrong. But its speed is really just for o's boot/program loads/small file transfers. ANy benchmark that actually stresses and uses large files for an actual realistic benchmark will show slower read/write speeds. Yet yes yours look horrible.

But my main question for you, "is your overall boot/program load/file transfer speed that sluggish?" if its not, then its just the benchmark score that's bad not your drive speeds. Benchmarks are all synthetic/fake unrealistic.

If your comp boots windows 7 in 30 seconds or 8 in 20 seconds, then your drive is fine.
 
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directrespect

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May 21, 2014
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Yes I understand what your saying about the difference between actual performance and what the benchmark is showing. There have been times though where I felt the drive is a lot more sluggish than what I replaced it with (128GB Sandisk SSD). I did clone the drive using samsung's cloning software and I have often thought maybe this caused the problem and maybe a fresh reinstall is needed. Yes my comp does boot windows 7 pretty fast and well within 30 seconds so maybe I am just being a little hesitant. I have just gotten a tad worried connecting the dots comparing this performance benchmark to the sluggishness i experienced after cloning the drive even though all is well at the moment.
 
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Dblkk

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Well, as far as cloning your original drive. When installing a new ssd, it is always best to do clean install of windows. Alot of times there are so many not need crap files and it all builds up. Now ssd's shouldnt have a speed hit doing this, but it couldnt hurt. But i also realize if this is a store bought and not purchased computer, you dont have windows disk. But if you do it really wouldnt hurt to do a clean install. Otherwise, i run a free program 'wise care 365' and it does a marvolous job at clearing up and out crap. Might give that a try, it also shows your pc boot time at first boot which is nice. Best part is, their paid for version, isnt really any better than their free one, which their free one is just that packed.

Another thing, not sure where i read it, but there are windows settings by default that really hurt ssd performance and longevity. I know windows 8 has file history which is kind of a data backup, i know that makes a difference after disabling.
 
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directrespect

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May 21, 2014
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Well I built this pc so I do have the windows 7 disk and honestly I am leaning towards that option of the fresh reinstall. As far as system settings the samsung magician already optimizes the OS for drive performance by turning off/on certain OS settings, beyond that I'm not sure what else more I can do at this point.
 
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