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SSD Poor Read Performance

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Howdy lads,

I'm using my laptop which has the Samsung 840 250gb and the sequential Read and Random Read times are below expected numbers.

I get 353 compared to 540 sequential read times and 80384 compared to 96000 Random Read Timings.

Why is this happening?? I have no clue as to how to improve these numbers!

Edit:
http://mysn.co.uk/xmg-a504
Windows 8.1
Intel Core i7 4700mq 2.4\3.4Ghz
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4Gb DDR3 1600Mhz RAM
Samsung 840 250Gb SSD
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Aquinus

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How full is the drive? If the driving is starting to get full, it can't actually write blocks sequentually so it has to start doing some level of random writes. The more you fill the SSD and the more you use it, the worse it will get. The best way to avoid this is by keeping a max of 70-75% of your SSD's used space to allow wear-leveling to do it's magic. It's worth noting that SSD performance doesn't remain consistent and can change the more you use your drive which completely depends on how you use it.
 
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Have you tryed running the performance optimization in the samsung magician software?

Make sure AHCI drivers are installed to and also make sure bios is set to AHCI mode.

It might also be worth checking SSD alignment.
http://www.overclock.net/t/1226963/how-to-properly-re-align-your-ssd-hdd-partitions

This is what i get with my 840 but i have custom settings and i did a fresh install of windows 8.1


Numbers go up and down they will never be the same on each test but that is my average speeds.
 
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Thanks lads for the info.

My drive has barely anything installed onto it yet so it's certainly not a space issue and I have AHCI enabled in the BIOS and magician says it's on.

I done the performance optimization also and it didn't change anything sadly :/

I downloaded the AS SSD benchmark tool and everything is green and okay, I also done a test and the sequential read timing is 503 which is much higher than samsung magician is saying?!?!

Read Write
Seq--------- 503.90-----246.73
4K---------- 18.74------ 60.06
4K-64Thrd-- 358.65-----172.67
Acc.time---- 0.130------ 0.083

Does that look right???
 
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Looks fine to me, I just ran that test and my results are very simler :D

SeqTest Read =511.78 MBs / Write =241.75 MBs
4K Test Read =23.61 MBs / Write =57.98 MBs
4K64T Test Read =350.45 MBs / Write =158.52 MBs
AccTime Read =0.114 ms / Write =0.058 ms
 
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Looking good so! Phew!

How long do these 840 SSD drives last for before they degrade??
 

eidairaman1

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iirc this is the same guy that asked the question about if its easy to move a SSD from one system to another without having to completely reformat the SSD.
 
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Yeah I'm that guy who asked?
 

eidairaman1

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Id say format it then lol
 
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That's great news I must say, that's a lot of data that these can endure so I'm happy with that ^^
Cheers lads.
 
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Maybe the laptop still has sata II?
 
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With the spec of the laptop i would doubt it only has sata-2 ports and if it did then that would just be plane stupid lol.

I think the samsung software was just not showing the proper results as the AS SSD benchmark ended up being almost the same as mine.
 
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