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[Official] Samsung SSD750/830/840/850 Owners Club - Page 188

post #1871 of 5733
Quote:
Originally Posted by Liranan View Post

That's natural, that also happens with mechanical storage.
What exactly does performance optimization do?
post #1872 of 5733
XP and Vista do not support TRIM. Thus Samsung have given users an 'optimisation' option which sends a TRIM command to the SSD to clear unused data. Win 7 and 8 do this automatically, though I run performance optimisation for the fun of it from time to time, even though it actually serves no purpose.
Edited by Liranan - 2/14/13 at 8:34am
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post #1873 of 5733
Quote:
Originally Posted by CravinR1 View Post

Sean,

What are the advantages of iastor over msahci? My drive is slower with iastor ?

I just got a new Lenovo w530 that wouldn't recognize my PM830 32GB mSata (used for cache) with the Intel drivers loaded so I reverted back to the msahci drivers. My main drive is a (dell) PM830 512. I didn't really see much difference either. Just out of curiosity what version of the Intel drivers were you using? When I had my Seagate Momentus XT 750 hybrid drive, I definitely saw the difference with the Intel drivers loaded. I'm still learning about this new hardware.
post #1874 of 5733
post #1875 of 5733
Quote:
Originally Posted by CravinR1 View Post

Sean,

What are the advantages of iastor over msahci? My drive is slower with iastor ?
Typically the Intel driver will be slightly more optimized, however it is mainly for RAID arrays.
post #1876 of 5733
Here are my 512GB Samsung 840 Pro SSD benchmarks before and after the Intel download. It is faster overall with the Intel download except in the Seq write which is 9.5% or 41.22 MB/s slower. Before uses the msahci and after uses the iaStor.

msahci


iaStorA




msahci


iaStorA
post #1877 of 5733
I hate using the MSAHCI drivers as they really slow the SSD down. I don't care much for benchmarks but the SSD is simply slow compared with the AMD drivers and it's noticeable.
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A8-6410 Lenovo Lancer 4B2 K16.3 R5 128 Shaders/M230 Hynix 8GB DDR3 1600 
Hard DriveHard DriveOSMonitor
Samsung 840 120 GB SSD Seagate Momentus 1TB 5400rmp Win 8.1 CMN1487 TN LED 14" 1366*768 
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Hard DriveHard DriveOSMonitor
Samsung 840 120 GB SSD Seagate Momentus 1TB 5400rmp Win 8.1 CMN1487 TN LED 14" 1366*768 
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post #1878 of 5733
Quote:
Originally Posted by Liranan View Post

I hate using the MSAHCI drivers as they really slow the SSD down. I don't care much for benchmarks but the SSD is simply slow compared with the AMD drivers and it's noticeable.
What are the AMD drivers that you are referring to?
post #1879 of 5733
Amd boards have amd data controllers not Intel
post #1880 of 5733
Ellow!

I just bought a Samsung 840 250GB as an upgrade from my ForceGT 120GB. I didn't opt for the Pro because I'm really not worried about using TLC NAND, and I was convinced that I wouldn't notice any real world difference between the pro and the non-pro. I've been using the drive for a few weeks, starting from a fresh Win7 x64 Ulti install.

But...

I seem to be able to notice a slightly worsened bootup-time, which annoys me quite a bit. The icons in the tray come sneaking in from the side instead of popping up rapidly, as I'm used to from my GT. I've done quite a few hours of digging around the Internet to substantiate my suspition by looking at benchmarks, but the impression I get is that the 840 IS the faster drive allround, beating up the GT in almost all tests. Except fully compressible data write tests, of course.

Now, looking through old Anvil-benchmarks I've done myself, I see that my ForceGT WAS a bit faster at reading 4K randoms, which I really did NOT see coming (the 840 performing around 25 MB/s, 6.5k IOPS and the GT at 31.05 MB/s, 7.8k IOPS - both at 46% compression)
Of course there is are quite a few sources of error, so I'm not even sure if I can conclude anything from the numbers I have (diff. BIOS/UEFI version, diff. IRST version, diff. OC settings, diff. program versions, free space on the drives, OP etc.).

So my question is: Should I really be able to notice a difference at all, or is something else at play here?
    
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i7 2600K @ 4.6GHz ASUS Maximus V Formula Gainward Phantom GTX 680, 2GB Crucial Ballistix Tactical 16GB 
Hard DriveHard DriveHard DriveCooling
Samsung 840, 250GB WD Black, 2TB WD Raptor, 150GB Corsair H100 
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Windows 8.1 Pro, 64bit LG W2363D 23", 1080p@120Hz Logitech UltraX Flat Corsair HX650 
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