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Mediocre SSD 4K Random Write IOPS

post #1 of 5

2/14/12 at 7:12am

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njdowdy
Overclocker in Training

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Hey all,

I just set up my new rig a few days ago. I have two Corsair Force GT (120GB) in RAID 0. Motherboard is ASUS RIVE.

I tested the SSD's with AS SSD and found some pretty mediocre 4K Random Write IOPS.

The manufacturer claims:

Random Write 4k (max): 85k IOPS (4k aligned)

6,470 is no where near 85,000

The two drives are at just under 40% space utilization and are used for C: and a currently unused partition (~12GB) soon to be linux.

My question:

Is my RAID array set up incorrectly?

Is the published speed wishful thinking?

This is my first SSD and first RAID0 so any help would be greatly appreciated!

CPU	Motherboard	Graphics	Graphics
Intel Core i7 3930K	RAMPAGE IV EXTREME	NVIDIA GeForce GTX 570	NVIDIA GeForce GTX 570
RAM	Hard Drive	Hard Drive	Optical Drive
Corsair Dominator GT	Western Digital Caviar Green	Corsair Force GT 3	LITEON iHAS424 24x DVD/CD Writer
Optical Drive	Cooling	Cooling	OS
LITEON iHBS212 12x Blu-Ray Writer	Corsair H100	4x Scythe Gentle Typhoons @ 1850 RPM	Windows 7 Ultimate
OS	Keyboard	Power	Case
Linux Ubuntu 12.04	Logitech G19	Corsair AX1200	Caselabs TH-10 (white)
Mouse	Mouse Pad	Audio	Other
MadCatz Cyborg R.A.T. 7 Albino	Razer Scarab	ASUS Xonar Essence STX	AFT PRO-37U Professional Media Reader
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CPU	Motherboard	Graphics	Graphics
Intel Core i7 3930K	RAMPAGE IV EXTREME	NVIDIA GeForce GTX 570	NVIDIA GeForce GTX 570
RAM	Hard Drive	Hard Drive	Optical Drive
Corsair Dominator GT	Western Digital Caviar Green	Corsair Force GT 3	LITEON iHAS424 24x DVD/CD Writer
Optical Drive	Cooling	Cooling	OS
LITEON iHBS212 12x Blu-Ray Writer	Corsair H100	4x Scythe Gentle Typhoons @ 1850 RPM	Windows 7 Ultimate
OS	Keyboard	Power	Case
Linux Ubuntu 12.04	Logitech G19	Corsair AX1200	Caselabs TH-10 (white)
Mouse	Mouse Pad	Audio	Other
MadCatz Cyborg R.A.T. 7 Albino	Razer Scarab	ASUS Xonar Essence STX	AFT PRO-37U Professional Media Reader
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post #2 of 5

2/14/12 at 7:13am

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njdowdy
Overclocker in Training

Joined: Sep 2011
Posts: 11
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* AS SSD is the most current version. Just tried to update and it found no new updates.

CPU	Motherboard	Graphics	Graphics
Intel Core i7 3930K	RAMPAGE IV EXTREME	NVIDIA GeForce GTX 570	NVIDIA GeForce GTX 570
RAM	Hard Drive	Hard Drive	Optical Drive
Corsair Dominator GT	Western Digital Caviar Green	Corsair Force GT 3	LITEON iHAS424 24x DVD/CD Writer
Optical Drive	Cooling	Cooling	OS
LITEON iHBS212 12x Blu-Ray Writer	Corsair H100	4x Scythe Gentle Typhoons @ 1850 RPM	Windows 7 Ultimate
OS	Keyboard	Power	Case
Linux Ubuntu 12.04	Logitech G19	Corsair AX1200	Caselabs TH-10 (white)
Mouse	Mouse Pad	Audio	Other
MadCatz Cyborg R.A.T. 7 Albino	Razer Scarab	ASUS Xonar Essence STX	AFT PRO-37U Professional Media Reader
View all

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CPU	Motherboard	Graphics	Graphics
Intel Core i7 3930K	RAMPAGE IV EXTREME	NVIDIA GeForce GTX 570	NVIDIA GeForce GTX 570
RAM	Hard Drive	Hard Drive	Optical Drive
Corsair Dominator GT	Western Digital Caviar Green	Corsair Force GT 3	LITEON iHAS424 24x DVD/CD Writer
Optical Drive	Cooling	Cooling	OS
LITEON iHBS212 12x Blu-Ray Writer	Corsair H100	4x Scythe Gentle Typhoons @ 1850 RPM	Windows 7 Ultimate
OS	Keyboard	Power	Case
Linux Ubuntu 12.04	Logitech G19	Corsair AX1200	Caselabs TH-10 (white)
Mouse	Mouse Pad	Audio	Other
MadCatz Cyborg R.A.T. 7 Albino	Razer Scarab	ASUS Xonar Essence STX	AFT PRO-37U Professional Media Reader
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post #3 of 5

2/17/12 at 8:46pm

valtopps
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Location: new york
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this is my vertex 3ogb ssd that i put a vetex turbo fw.

CPU	Motherboard	Graphics	RAM
a-8 3870k	GIGABYTE a75m-ud2h	apu	G.SKILL 2x4GB DDR3 2133
Hard Drive	Optical Drive	Cooling	OS
crucial m4 128gb SSD + SAMSUNG F3 1TB	sony dvd	CORSAIR H60	Windows 7 Ultimate x64
Monitor	Power	Case	Mouse
i-inc 28''	XFX 850W Black Edition	Zalman Z9+	legitech g9
Audio
MUSICXTREME
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CPU	Motherboard	Graphics	RAM
a-8 3870k	GIGABYTE a75m-ud2h	apu	G.SKILL 2x4GB DDR3 2133
Hard Drive	Optical Drive	Cooling	OS
crucial m4 128gb SSD + SAMSUNG F3 1TB	sony dvd	CORSAIR H60	Windows 7 Ultimate x64
Monitor	Power	Case	Mouse
i-inc 28''	XFX 850W Black Edition	Zalman Z9+	legitech g9
Audio
MUSICXTREME
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post #4 of 5

2/18/12 at 10:44am

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njdowdy
Overclocker in Training

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Obviously I have made a mistake.

The 4K random WRITES is NOT 6470, but rather 26431 IOPS.

But still, 85k >> 26k.

Perhaps what Corsair advertises as "Random Write 4k (max)" is really what AS SSD terms "4K-64Thrd"?

Judging from this thread:
http://www.overclock.net/t/1173805/understanding-4k-and-4k-64thrd

It seems "4K-64thrd" refers to 64 simultaneous requests of 4k data.

Just comparing those two categories it is interesting that:

4K Read to 4K-64thrd Read scales by about a factor of 10

Whereas

4K Write to 4K-64thrd Write scales by only about 2.75

Unless someone has further insight into this I will just take it for what it is. I am enjoying the speed even if it is gimped at the moment.

CPU	Motherboard	Graphics	Graphics
Intel Core i7 3930K	RAMPAGE IV EXTREME	NVIDIA GeForce GTX 570	NVIDIA GeForce GTX 570
RAM	Hard Drive	Hard Drive	Optical Drive
Corsair Dominator GT	Western Digital Caviar Green	Corsair Force GT 3	LITEON iHAS424 24x DVD/CD Writer
Optical Drive	Cooling	Cooling	OS
LITEON iHBS212 12x Blu-Ray Writer	Corsair H100	4x Scythe Gentle Typhoons @ 1850 RPM	Windows 7 Ultimate
OS	Keyboard	Power	Case
Linux Ubuntu 12.04	Logitech G19	Corsair AX1200	Caselabs TH-10 (white)
Mouse	Mouse Pad	Audio	Other
MadCatz Cyborg R.A.T. 7 Albino	Razer Scarab	ASUS Xonar Essence STX	AFT PRO-37U Professional Media Reader
View all

hide details

CPU	Motherboard	Graphics	Graphics
Intel Core i7 3930K	RAMPAGE IV EXTREME	NVIDIA GeForce GTX 570	NVIDIA GeForce GTX 570
RAM	Hard Drive	Hard Drive	Optical Drive
Corsair Dominator GT	Western Digital Caviar Green	Corsair Force GT 3	LITEON iHAS424 24x DVD/CD Writer
Optical Drive	Cooling	Cooling	OS
LITEON iHBS212 12x Blu-Ray Writer	Corsair H100	4x Scythe Gentle Typhoons @ 1850 RPM	Windows 7 Ultimate
OS	Keyboard	Power	Case
Linux Ubuntu 12.04	Logitech G19	Corsair AX1200	Caselabs TH-10 (white)
Mouse	Mouse Pad	Audio	Other
MadCatz Cyborg R.A.T. 7 Albino	Razer Scarab	ASUS Xonar Essence STX	AFT PRO-37U Professional Media Reader
View all

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post #5 of 5

2/18/12 at 12:50pm

Sean Webster
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Yea, your drive is not gimped, look at the 4K-64thrd results, that is your IOPs specs come from, and they used a different program to find the spec for it too, so using AS SSD will not give you the specs from the manufacturer.

CPU	Motherboard	Graphics	RAM
i7-2600K	Asus P8Z68-V	MSI GTX 660 Ti PE OC	G.Skill Ares
Hard Drive	Hard Drive	Hard Drive	Optical Drive
Plextor M5 Pro	Seagate Barracuda 7200.12	Seagate Barracuda 7200.12	Asus DVD Burner
Cooling	OS	Monitor	Monitor
Thermalright Silver Arrow	Microsoft Windows 8 Pro	Samsung P2370HD	HPw1907
Power	Case	Audio
Corsair TX650	Corsair 650D	Asus Xonar DX
View all

CPU	Motherboard	RAM	Hard Drive
Intel i3-2100	ASRock H61M/U3S3	G.Skill Ripjaws X	Samsung Spinpoint F4
Hard Drive	Hard Drive	Hard Drive	Hard Drive
Samsung Spinpoint F4	Hitachi Deskstar 7K3000	Hitachi Deskstar 7K3000	Samsung Spinpoint F3
Hard Drive	Hard Drive	Hard Drive	OS
Samsung Spinpoint F3	WD Red	WD Red	Microsoft Windows Server 2012
Power	Case	Other
Corsair TX650 v2	Fractal Design Arc Midi	Dell PowerEdge PERC 5/i
View all

CPU	Motherboard	RAM	Hard Drive
A8 5600K	BIOSTAR Hi-Fi A85W	G.Skill Ripjaws X	Crucial M4
Optical Drive	OS	Monitor	Monitor
Asus DVD Burner	Microsoft Windows 7 Professional	ASUS VE276Q	HPw1907
Power	Case
Antec Neo Eco 520	HAF 912
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CPU	Motherboard	Graphics	RAM
i7-2600K	Asus P8Z68-V	MSI GTX 660 Ti PE OC	G.Skill Ares
Hard Drive	Hard Drive	Hard Drive	Optical Drive
Plextor M5 Pro	Seagate Barracuda 7200.12	Seagate Barracuda 7200.12	Asus DVD Burner
Cooling	OS	Monitor	Monitor
Thermalright Silver Arrow	Microsoft Windows 8 Pro	Samsung P2370HD	HPw1907
Power	Case	Audio
Corsair TX650	Corsair 650D	Asus Xonar DX
View all

CPU	Motherboard	RAM	Hard Drive
Intel i3-2100	ASRock H61M/U3S3	G.Skill Ripjaws X	Samsung Spinpoint F4
Hard Drive	Hard Drive	Hard Drive	Hard Drive
Samsung Spinpoint F4	Hitachi Deskstar 7K3000	Hitachi Deskstar 7K3000	Samsung Spinpoint F3
Hard Drive	Hard Drive	Hard Drive	OS
Samsung Spinpoint F3	WD Red	WD Red	Microsoft Windows Server 2012
Power	Case	Other
Corsair TX650 v2	Fractal Design Arc Midi	Dell PowerEdge PERC 5/i
View all

CPU	Motherboard	RAM	Hard Drive
A8 5600K	BIOSTAR Hi-Fi A85W	G.Skill Ripjaws X	Crucial M4
Optical Drive	OS	Monitor	Monitor
Asus DVD Burner	Microsoft Windows 7 Professional	ASUS VE276Q	HPw1907
Power	Case
Antec Neo Eco 520	HAF 912
View all

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