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Samsung 840 256GB Pro: IOPS? Why so low? - Page 2

post #11 of 26
I have an ASUS P8Z77-V Pro with a Samsung 840 Pro 256 installed on the gray Intel SATA 6gb connection but get nowhere near the speeds the posters in here have reported.

System:
i5-3570k @ 4.2Ghz
16GB DDR3 2400
Samsung 840 Pro 256gb with Windows 8 pro 64-bit installed
WD 3Tb caviar green for media
Radeon HD 7950

I've used the magician software's built in "maximum performance" and also followed additional suggestions for maximal speed by disabling write caching, ensuring TRIM is enabled, being connected to SATA 6Gb, disabling system restore, Max Performance Power settings in Windows, ensured latest firmware, latest BIOS.

I ran three benchmark tests in a row and wasn't even getting past 360 on Sequential Write, about 450's in Read, 60k Random Read, 40k Random Write.

Getting real bothered that my drive isn't performing near its advertised speeds even after "optimizing" it per Samsung suggestions. Even after running the benchmark the tool says "Your drive isn't performing at optimal speed. You should configure it for Maximum Performance." Even though I've already done that.

Someone please help!
post #12 of 26
Quote:
Originally Posted by nickhimself View Post

I have an ASUS P8Z77-V Pro with a Samsung 840 Pro 256 installed on the gray Intel SATA 6gb connection but get nowhere near the speeds the posters in here have reported.

System:
i5-3570k @ 4.2Ghz
16GB DDR3 2400
Samsung 840 Pro 256gb with Windows 8 pro 64-bit installed
WD 3Tb caviar green for media
Radeon HD 7950

I've used the magician software's built in "maximum performance" and also followed additional suggestions for maximal speed by disabling write caching, ensuring TRIM is enabled, being connected to SATA 6Gb, disabling system restore, Max Performance Power settings in Windows, ensured latest firmware, latest BIOS.

I ran three benchmark tests in a row and wasn't even getting past 360 on Sequential Write, about 450's in Read, 60k Random Read, 40k Random Write.

Getting real bothered that my drive isn't performing near its advertised speeds even after "optimizing" it per Samsung suggestions. Even after running the benchmark the tool says "Your drive isn't performing at optimal speed. You should configure it for Maximum Performance." Even though I've already done that.

Someone please help!
show a screenshot of AS SSD.
post #13 of 26
I am seeing similar IOPS results. I have attached both Samsung Magician and AS SSD screen shots. As well as CPU Z. Is this because I'm on a P67? Sorry, this is my first SSD, switched from a 6yr old 80GBx2 RAID0 set up. Just want to make sure nothing is wrong. Thanks.





PCRIG.txt 93k .txt file
post #14 of 26
I've seen benchmarks all over the board for this drive on different systems. The most important thing, it seems, is having the drive connected to a 6Gb/s port and on AHCI.

Here are my results with AS-SSD:




I can bump those 4K random read/writes up by disabling C1e and c-states in my BIOS because apparently AS-SSD does not ramp up the CPU when doing the benchmarks. If I disable CPU power saving features, my 4K Random Read goes up about 10-20% and my 4K Random Write nearly doubles. The rest of the values stay pretty much the same, so I've left CPU power saving on because there is no noticeable difference in actual performance.

I'm running an Ivy Bridge i5 on Windows 8.
post #15 of 26
I would try running AS-SSD with Prime95 running a single thread in the background. This sshouldrule oout the CPU as a cause...
   
Z77 Bench-a-lot
(31 items)
 
CPUMotherboardGraphicsGraphics
i7 3930K @ 4.92Ghz Asus Rampage 4 Extreme EVGA GTX670 FTW 2GB  EVGA GTX780Ti Classified K|ngp|n Edition @ 1483... 
GraphicsRAMHard DriveHard Drive
EVGA GTX780Ti Classified K|ngp|n Edition @ 1483... 16GB G.Skill Ripjaws-Z @ DDR3-2248 9-10-9-26 1T Samsung 830 256GB SSD WD10EZEX 1TB HDD 
Hard DriveHard DriveHard DriveHard Drive
WD10EALX 1TB HDD Seagate Barracuda 7200.14 1TB WD3200AAKS 320GB HDD WD5000HHTZ 10krpm 500GB VelociRaptor 
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CoolingCoolingCoolingCooling
Heatkiller GTX680 "Hole Edition" Block + Backplate XSPC Single-Bay Res (Single 5.25 bay) EK Multioption Res X2 - Advanced 150 DD "Fill-Port Res" + Fill-Port Fitting (Red) 
CoolingCoolingCoolingCooling
2x MCP35X + Heatsinks/80x15mm Fan XSPC EX420 Alphacool NeXXos UT60 240 6x Bgears Blasters 140mm 1800rpm Fans 
CoolingCoolingCoolingOS
4x Koolance 120x25mm 2600rpm Fans Comp/Rotary Fittings (BP/XSPC/Monsoon) Primoflex Pro LRT - White (1/2x3/4) Windows 7 Professional 64bit  
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Z77 Bench-a-lot
(31 items)
 
CPUMotherboardGraphicsGraphics
i7 3930K @ 4.92Ghz Asus Rampage 4 Extreme EVGA GTX670 FTW 2GB  EVGA GTX780Ti Classified K|ngp|n Edition @ 1483... 
GraphicsRAMHard DriveHard Drive
EVGA GTX780Ti Classified K|ngp|n Edition @ 1483... 16GB G.Skill Ripjaws-Z @ DDR3-2248 9-10-9-26 1T Samsung 830 256GB SSD WD10EZEX 1TB HDD 
Hard DriveHard DriveHard DriveHard Drive
WD10EALX 1TB HDD Seagate Barracuda 7200.14 1TB WD3200AAKS 320GB HDD WD5000HHTZ 10krpm 500GB VelociRaptor 
Optical DriveCoolingCoolingCooling
LG/Hitachi Slim DVD-R/W Custom MB-Backside VRM-sinks (Copper) 3x NZXT RF-FX140LB 1-2krpm 98.3CFM Case Fans 2x Corsair SP120-PE Case Fans 
CoolingCoolingCoolingCooling
Heatkiller GTX680 "Hole Edition" Block + Backplate XSPC Single-Bay Res (Single 5.25 bay) EK Multioption Res X2 - Advanced 150 DD "Fill-Port Res" + Fill-Port Fitting (Red) 
CoolingCoolingCoolingCooling
2x MCP35X + Heatsinks/80x15mm Fan XSPC EX420 Alphacool NeXXos UT60 240 6x Bgears Blasters 140mm 1800rpm Fans 
CoolingCoolingCoolingOS
4x Koolance 120x25mm 2600rpm Fans Comp/Rotary Fittings (BP/XSPC/Monsoon) Primoflex Pro LRT - White (1/2x3/4) Windows 7 Professional 64bit  
MonitorMonitorMonitorMonitor
Dell P2210Hb 21.5" 1920x1080p Viewsonic VA2012WB 20.1" LCD 1680x1050 Dell U3014 Eizo 27" 1440p 10bit RGB-LED Backlit AH-IPS Panel 
MonitorKeyboardPowerCase
55" LG HDTV (their top 2014 model) Ducky Mechanical (Browns) NZXT HALE90 850W + 8 blown-up AX1200/i's NZXT Switch 810 (White) 
MouseMouse PadAudioAudio
R.A.T.3 + MX510 My Desk GRADO RS1i Headphones Grado PS1000 Headphones 
OtherOtherOtherOther
Bitfenix Hydra Pro Fan Controller 5ch 30W/ch Bitfenix Alchemy Individually-Sleeved Extension... NZXT Individually-Sleeved Front Panel Wires (Bl... Phobya Sleeved 1x3pin-to-4x3pin Fan Splitter 
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post #16 of 26


That's the comparison screenshot after I disabled SATA power management and c1e state on the CPU.

I have an ASRock z77 Extreme4 w/ Core i5 3570K.

In the BIOS under Advanced for the Storage section there is an option for SATA Aggressive Power Management or something like that, disable it. I am not sure if the c1e state helped by being disabled in the CPU section but I will test that later today to confirm.

So for anyone that might be worried about performance make sure to have these two functions disabled, I think the more important one is the SATA power management.
Edited by mortici - 6/6/13 at 9:23am
post #17 of 26
Those numbers are a huge improvement! Glad you figured out the problem, and thanks for sharing the solution!
   
Z77 Bench-a-lot
(31 items)
 
CPUMotherboardGraphicsGraphics
i7 3930K @ 4.92Ghz Asus Rampage 4 Extreme EVGA GTX670 FTW 2GB  EVGA GTX780Ti Classified K|ngp|n Edition @ 1483... 
GraphicsRAMHard DriveHard Drive
EVGA GTX780Ti Classified K|ngp|n Edition @ 1483... 16GB G.Skill Ripjaws-Z @ DDR3-2248 9-10-9-26 1T Samsung 830 256GB SSD WD10EZEX 1TB HDD 
Hard DriveHard DriveHard DriveHard Drive
WD10EALX 1TB HDD Seagate Barracuda 7200.14 1TB WD3200AAKS 320GB HDD WD5000HHTZ 10krpm 500GB VelociRaptor 
Optical DriveCoolingCoolingCooling
LG/Hitachi Slim DVD-R/W Custom MB-Backside VRM-sinks (Copper) 3x NZXT RF-FX140LB 1-2krpm 98.3CFM Case Fans 2x Corsair SP120-PE Case Fans 
CoolingCoolingCoolingCooling
Heatkiller GTX680 "Hole Edition" Block + Backplate XSPC Single-Bay Res (Single 5.25 bay) EK Multioption Res X2 - Advanced 150 DD "Fill-Port Res" + Fill-Port Fitting (Red) 
CoolingCoolingCoolingCooling
2x MCP35X + Heatsinks/80x15mm Fan XSPC EX420 Alphacool NeXXos UT60 240 6x Bgears Blasters 140mm 1800rpm Fans 
CoolingCoolingCoolingOS
4x Koolance 120x25mm 2600rpm Fans Comp/Rotary Fittings (BP/XSPC/Monsoon) Primoflex Pro LRT - White (1/2x3/4) Windows 7 Professional 64bit  
MonitorMonitorMonitorMonitor
Dell P2210Hb 21.5" 1920x1080p Viewsonic VA2012WB 20.1" LCD 1680x1050 Dell U3014 Eizo 27" 1440p 10bit RGB-LED Backlit AH-IPS Panel 
MonitorKeyboardPowerCase
55" LG HDTV (their top 2014 model) Ducky Mechanical (Browns) NZXT HALE90 850W + 8 blown-up AX1200/i's NZXT Switch 810 (White) 
MouseMouse PadAudioAudio
R.A.T.3 + MX510 My Desk GRADO RS1i Headphones Grado PS1000 Headphones 
OtherOtherOtherOther
Bitfenix Hydra Pro Fan Controller 5ch 30W/ch Bitfenix Alchemy Individually-Sleeved Extension... NZXT Individually-Sleeved Front Panel Wires (Bl... Phobya Sleeved 1x3pin-to-4x3pin Fan Splitter 
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Sleeved Wires w Paracord myself (no Heatshrink) Custom Front and Top Panels w HexxMesh *In Prog... Working on Custom Pedestal Prototype 
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Z77 Bench-a-lot
(31 items)
 
CPUMotherboardGraphicsGraphics
i7 3930K @ 4.92Ghz Asus Rampage 4 Extreme EVGA GTX670 FTW 2GB  EVGA GTX780Ti Classified K|ngp|n Edition @ 1483... 
GraphicsRAMHard DriveHard Drive
EVGA GTX780Ti Classified K|ngp|n Edition @ 1483... 16GB G.Skill Ripjaws-Z @ DDR3-2248 9-10-9-26 1T Samsung 830 256GB SSD WD10EZEX 1TB HDD 
Hard DriveHard DriveHard DriveHard Drive
WD10EALX 1TB HDD Seagate Barracuda 7200.14 1TB WD3200AAKS 320GB HDD WD5000HHTZ 10krpm 500GB VelociRaptor 
Optical DriveCoolingCoolingCooling
LG/Hitachi Slim DVD-R/W Custom MB-Backside VRM-sinks (Copper) 3x NZXT RF-FX140LB 1-2krpm 98.3CFM Case Fans 2x Corsair SP120-PE Case Fans 
CoolingCoolingCoolingCooling
Heatkiller GTX680 "Hole Edition" Block + Backplate XSPC Single-Bay Res (Single 5.25 bay) EK Multioption Res X2 - Advanced 150 DD "Fill-Port Res" + Fill-Port Fitting (Red) 
CoolingCoolingCoolingCooling
2x MCP35X + Heatsinks/80x15mm Fan XSPC EX420 Alphacool NeXXos UT60 240 6x Bgears Blasters 140mm 1800rpm Fans 
CoolingCoolingCoolingOS
4x Koolance 120x25mm 2600rpm Fans Comp/Rotary Fittings (BP/XSPC/Monsoon) Primoflex Pro LRT - White (1/2x3/4) Windows 7 Professional 64bit  
MonitorMonitorMonitorMonitor
Dell P2210Hb 21.5" 1920x1080p Viewsonic VA2012WB 20.1" LCD 1680x1050 Dell U3014 Eizo 27" 1440p 10bit RGB-LED Backlit AH-IPS Panel 
MonitorKeyboardPowerCase
55" LG HDTV (their top 2014 model) Ducky Mechanical (Browns) NZXT HALE90 850W + 8 blown-up AX1200/i's NZXT Switch 810 (White) 
MouseMouse PadAudioAudio
R.A.T.3 + MX510 My Desk GRADO RS1i Headphones Grado PS1000 Headphones 
OtherOtherOtherOther
Bitfenix Hydra Pro Fan Controller 5ch 30W/ch Bitfenix Alchemy Individually-Sleeved Extension... NZXT Individually-Sleeved Front Panel Wires (Bl... Phobya Sleeved 1x3pin-to-4x3pin Fan Splitter 
OtherOtherOther
Sleeved Wires w Paracord myself (no Heatshrink) Custom Front and Top Panels w HexxMesh *In Prog... Working on Custom Pedestal Prototype 
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post #18 of 26
Hi,
i managed to disable LPM through regedit, http://forum.crucial.com/t5/Solid-State-Drives-SSD/Solution-C300-Disk-Freeze-ups-in-Windows-7-solved-for-me/td-p/38766, I also tried to disable C1E of curiosity, because C1E only impacts processor behaviour, and i got a slight improvement in IOPS, but nothing close to the DXM04B0Q Firmware :

Green = DXM04B0Q Firmware
light blue = DXM05B0Q Firmware right after the update
Blue = DXM05B0Q after disabling LPM and (if it matters in any way) C1E

Samsung, if you want to keep f*cking up people's SSD's, at least implement a downgrade tool or procedure.
post #19 of 26
Strange... Maybe it was a bad flash. Try to disable all CPU C states not just C1e. If you can run CPU-z to see what happens with voltage when you run the benchmark. It should bump up the vcore slowly, or at least cause a slight spike.

Do you have any options under BIOS for your storage ports, anything with power management? On my ASRock z77 extreme4 under Advanced -> Storage there was an option for SATA Aggressive Power Link Management, I disabled it, which I think did the most to help. I think all z77 boards might have this option in their BIOS.

Not sure why yours went to crap after flash... RMA?
Edited by mortici - 6/15/13 at 9:49am
post #20 of 26
Quote:
Originally Posted by o2Xav View Post

Hi,
Samsung, if you want to keep f*cking up people's SSD's, at least implement a downgrade tool or procedure.
I only heard of my issues with Samsung RMA ... Not this. Wow. I thought at least being the largest A-Z IT mass manufacturer they should at least give out drivers that didn't f up IOPS performance
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Ayase Eli
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