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Topic # 146647 24-May-2014 20:35
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I've had this drive for a while now, and I've been very happy with it considering it was a humungous improvement on metal disk booting, copying...etc...etc.  But I've built a few rigs for others with the cheap $60.00 SSD's with pretty standard hardware and I soon learned my SSD just isn't performing how it should do.

I picked up a Kingston 60GB SSD for my father.  The damn thing boots in 4 seconds flat due to the ASUS quick BIOS setting being on 1 second.

I recently reinstalled Windows on my machine and I'll be lucky to get a 20 second boot now.   I decided to do some synthetic benchmarking.  It seemed to score pretty damn poorly compared to what people are getting on YouTube with a similar or same drive.

Rig:

Mushkin Chronos 480GB SSD (MKNSSDCR480GB-7)
AMD Phenom II Thunban X2 Hexa-Core 1090T Processor (3.0Ghz @ 3.9GHz overclocked)
16GB of Kingston DDR3 Memory in Duel Channel configuration
GIGABYTE 990FXA UD5 Motherboard

https://imgur.com/a/wDP7Z

I'm getting pretty terrible results in the low hundreds where some are hitting 540 - 550MB/s plus.  Which is what is advertised on the internet.  The SSD is running stock firmware.  Have not touched firmware on the motherboard either.  It is in an AHCI configuration with 3 other 1TB Western Digital Black Edition drives.
Where do I start?  Formatting and installing as an AHCI drive from square one did not seem to do much.  AHCI drivers are installed.  It's on a SATA3 6.0GB/s port with a 6GB/s cable.  Something which I changed recently as I didn't realise the cable made a difference!  Learn something every day.

It has a 3 year warranty.  Should I be returning it?  I'm going to have to dig up the damn receipt!





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  Reply # 1052500 24-May-2014 20:55
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Might want to look at updating the bios on your motherboard

AS SSD is reporting that your SSD is running in pciide mode which will cause slow speeds. You want it to say msachi or something along those lines


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  Reply # 1052549 24-May-2014 22:02
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Running Samsung SSD. 250GB.




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  Reply # 1052573 24-May-2014 23:00
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TimA: Running Samsung SSD. 250GB.

Those are the kind of speeds my SSD can achieve.  250MB/s Write / 550MB/s read.

I will update my motherboard BIOS tonight and see if I can sort this out once and for all.
Anything else I need to look in to?





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  Reply # 1052689 25-May-2014 10:28
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freitasm: Are you running Windows in SATA or AHCI mode?


It is all in AHCI mode.  I thought it was, but it seemed to have switched back.  The windows registry trick does not seem to work for me.  I flashed my BIOS with the latest firmware last night too.  Didn't seem to help much.  Now I have a reason to upgrade to that new FX processor though, haha!

I think I'm going to do a full reinstall and report back.





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  Reply # 1052744 25-May-2014 12:22
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freitasm: Windows 7 or 8? Different ways to activate AHCI after install.


Windows 7.

I've edited the registry and now re-enabled AHCI after reverting back to default.  AS SSD is now reporting my drive as a mvs91xx - OK and write speeds are up to 250MB/s but nothing much more in terms of improvement.  Maybe I'll reinstall the motherboard's chipset drivers again after getting the whole AHCI situation sorted.

EDIT: No improvement after latest chipset drivers installed.





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  Reply # 1052793 25-May-2014 14:19
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Reading this i decided to check my setup as it seemed to be the same as the OP. Did the registry trick then changed the BIOS setting and installed the Intel drivers. same sort of bump in speed up to 250MB/s

im not to worried but im sure the intel 520 is a little faster than that

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  Reply # 1052847 25-May-2014 15:21
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  Reply # 1052889 25-May-2014 15:55
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This is the Crucial SSD on my HP Microserver, compared to a Crucial C300... This shows how two different models, from same manufacturer and on same computer can have different performance (this server is running in AHCI mode):







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  Reply # 1053008 25-May-2014 18:21
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Just changed the Mushkin to a different port on the motherboard.  I get a 10MB/s average increase (from 245 - 250MB/s to 260 - 265MB/s)
I'm beginning to think my motherboard just isn't going to handle the jandle.

All ports on my motherboard are SATA 3.0 6Gb/s compatible.  So I don't see why, but it seems to be the case.





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  Reply # 1053224 26-May-2014 00:13
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Updated the firmware of the SSD tonight.  No difference again.  Funny that ATTO stats report normal operation, even though I've uninstalled the AMD Marvel drivers for the storage controller.  547MB/s reads are consistent in ATTO.  But still can't get anywhere near that on CrystalDisk or AS SSD benches.

I don't know what's going on.  Am I getting a synthetic result from ATTO and a result closer to reality from CrystalDisk?  To anyone else giving this a go, try ATTO and see what happens.





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  Reply # 1053615 26-May-2014 14:30
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Might sound silly but try changing the SATA cable too.



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  Reply # 1053654 26-May-2014 15:47
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Ragnor: Might sound silly but try changing the SATA cable too.

Will swap them around tonight.  Good idea.  Did go from a red SATA2 cable to a black SATA3.0 6Gbps cable.  I have another spare 6Gbp/s cable.

EDIT:  Just thought that maybe the metal drives attached to the same chipset/bus may be slowing it down?  Worth disconnecting them to see I guess.





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  Reply # 1053767 26-May-2014 17:10
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The biggest win with an SSD is low latency. My old SSD isn't a lot faster - well, it kinda is but not huge. Because latency is low things happen pretty quickly.

OWC SSD 120GB (probably 3 years old now)



Samsung 840 pro 120GB for comparison




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