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Samsung 830 slow sequential read and write - Page 2

post #11 of 27
Hi guys. Been a while since I posted here. Googled my problem, and this thread came up.

This guy is obviously limited by sata II, me on the other hand should not be. This is my mobo.

My speeds are much too low. I've run opimization through magician, updated to the FW released on the 22nd of this month, don't know what else to do. Any help?

Thanks to anyone that can throw some advice my way! Been so excited to upgade for months and months, bought this drive at a high price since I read it was the best, and now I'm kind of panicing.

CrystalDiskMark 3.0 x64 (C) 2007-2010 hiyohiyo
Crystal Dew World : http://crystalmark.info/
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 382.692 MB/s
Sequential Write : 238.475 MB/s
Random Read 512KB : 293.259 MB/s
Random Write 512KB : 226.625 MB/s
Random Read 4KB (QD=1) : 21.766 MB/s [ 5313.8 IOPS]
Random Write 4KB (QD=1) : 57.442 MB/s [ 14023.9 IOPS]
Random Read 4KB (QD=32) : 189.412 MB/s [ 46243.2 IOPS]
Random Write 4KB (QD=32) : 117.215 MB/s [ 28617.0 IOPS]

Test : 1000 MB [C: 18.5% (22.0/119.1 GB)] (x1)
Date : 2012/01/25 23:51:49
OS : Windows 7 SP1 [6.1 Build 7601] (x64)
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post #12 of 27
Upon further investigation I've found the problem is with the damn marvel 9128 chip. Guess I'm pretty much stuck right exactly in between sata 2 and sata 3. I guess you could call it sata 2.5. Kind of pissed, but it is what it is.
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post #13 of 27
Quote:
Originally Posted by johnny911 View Post

Upon further investigation I've found the problem is with the damn marvel 9128 chip. Guess I'm pretty much stuck right exactly in between sata 2 and sata 3. I guess you could call it sata 2.5. Kind of pissed, but it is what it is.

It's not the Marvell chip's fault. It actually does a good job for a chip having to splice together unused pcie lanes and having no direct connection to the chipset.

It's the board manufacturer's fault for claiming 6gb/s speeds. However, even that claim is true because the sequential speed does go well past the 3gb/s limit.
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post #14 of 27
Quote:
Originally Posted by Z Naught View Post

Anyway I can be sure?

Im sure about it. I already had a samsung 830 128Gb drive.
Running on Sata 2 it gave me those performance numbers, running on sata 3 it gave the correct ones from factory.
post #15 of 27
Ok, thanks, good to know.

I've read though that it is not just gigas fault, and that all mainboard manufacturers that used the 9128 chip encounter the same issue. I'll take your word for it though.

Either way looks like i'm going to be in 4 a new mobo soon.

I've managed to get the seq reads up to 412 MB/s through a couple of small changes, but it is still about 100 MB/s too low. As I am going to be moving around a lot of steam games from this drive to bigger spinners, I am sort of worried about the possible lack of trim support. Will garbage collection be enough or should I periodically plug the drive into one of the intel ports to allow trim to happen?
Edited by johnny911 - 1/26/12 at 10:26am
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post #16 of 27
Quote:
Originally Posted by johnny911 View Post

Ok, thanks, good to know.
I've read though that it is not just gigas fault, and that all mainboard manufacturers that used the 9128 chip encounter the same issue. I'll take your word for it though.
Either way looks like i'm going to be in 4 a new mobo soon.

you should save up and dump money into ivy bridge! ^_^
sorry to hear that your awesome ssd is being held back, cause this things really fast :/
post #17 of 27
553

That's on an Intel 6GB/s in ACHI mode, my own SSD, the 128GB version.
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post #18 of 27
Damn, wish I had those speeds. These are my new numbers on my 128 drive.

CrystalDiskMark 3.0 x64 (C) 2007-2010 hiyohiyo
Crystal Dew World : http://crystalmark.info/
* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]

Sequential Read : 412.717 MB/s
Sequential Write : 286.770 MB/s
Random Read 512KB : 295.667 MB/s
Random Write 512KB : 236.908 MB/s
Random Read 4KB (QD=1) : 21.860 MB/s [ 5336.9 IOPS]
Random Write 4KB (QD=1) : 58.034 MB/s [ 14168.5 IOPS]
Random Read 4KB (QD=32) : 196.734 MB/s [ 48030.8 IOPS]
Random Write 4KB (QD=32) : 116.106 MB/s [ 28346.3 IOPS]

Test : 1000 MB [C: 19.6% (23.3/119.1 GB)] (x2)
Date : 2012/01/26 14:04:20
OS : Windows 7 SP1 [6.1 Build 7601] (x64)

Even with the slowdown, it is still faster than or blows away all categories compared to my laptop's 64 GB m4 except seq reads and 512k reads.

I guess I'm ok with it, I'm just worried about other unseen factors. Like, will the fact that the samsung has toggle flash be taken advantage of on the marvel controller? And will trim work, or will I have to plug into an intel port periodically?
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Samsung 830 128GB, 2xSeagate 500gb (Raid 0) 1TB... LiteOn Win 7 64 50" 1080p Pioneer KRP-500 Blackest blacks on earth 
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Hard DriveOptical DriveOSMonitor
Samsung 830 128GB, 2xSeagate 500gb (Raid 0) 1TB... LiteOn Win 7 64 50" 1080p Pioneer KRP-500 Blackest blacks on earth 
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post #19 of 27
I'm bumping this hoping someone out there knows these two honestly pretty advanced questions. I am dying to know seriously.

Will the fact that the samsung has toggle flash be taken advantage of on the marvel controller, or is the marvel controller so primitive that it would treat this drive as asynchronous? And will trim work with this mobo, or will I have to plug into an intel port periodically?

I had a raid 0 with 7200 drives before, not that that is great but I really want an actual upgrade type of feel with this drive, and not just a so-so upgrade. It does seem quite a bit faster on some things, but not so much with others that I had expected to be almost night and day.

Initial load times for most games seems to be cut down by about 30-35%. That's pretty sweet, but a lot of that I could say is attributed to the almost 2 year-old windows 7 install I was used to before this fresh install. redface.gif
The Rig
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CPUMotherboardGraphicsRAM
i7-930 @ 4.3GHZ 1.344V Good batch... stable enough Gigabyte GA-X58A-UD3R Crossfired XFX Non-ref ZNFC 5870s G. Skill Ripjaws 6GB 1600 (8-8-8-20) 
Hard DriveOptical DriveOSMonitor
Samsung 830 128GB, 2xSeagate 500gb (Raid 0) 1TB... LiteOn Win 7 64 50" 1080p Pioneer KRP-500 Blackest blacks on earth 
PowerCase
Antec CP-850 Antec 1200 (with 11 fans) 
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The Rig
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7-930 @ 4.3GHZ 1.344V Good batch... stable enough Gigabyte GA-X58A-UD3R Crossfired XFX Non-ref ZNFC 5870s G. Skill Ripjaws 6GB 1600 (8-8-8-20) 
Hard DriveOptical DriveOSMonitor
Samsung 830 128GB, 2xSeagate 500gb (Raid 0) 1TB... LiteOn Win 7 64 50" 1080p Pioneer KRP-500 Blackest blacks on earth 
PowerCase
Antec CP-850 Antec 1200 (with 11 fans) 
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post #20 of 27
Quote:
Originally Posted by johnny911 View Post

I'm bumping this hoping someone out there knows these two honestly pretty advanced questions. I am dying to know seriously.

Will the fact that the Samsung has toggle flash be taken advantage of on the marvel controller, or is the marvel controller so primitive that it would treat this drive as asynchronous?
They work together as the firmware is coded for them to work...neither is really hardware limited upon one another from what I know. The Firmware is.
Quote:
And will trim work with this mobo, or will I have to plug into an intel port periodically?
TRIM does not work on Marvell Ports...I advise you just use the native ones.
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