Overclock.net › Forums › Components › Hard Drives & Storage › SSD › Did I buy the wrong SSD? (25nm vs 34nm NAND)
New Posts  All Forums:Forum Nav:

Did I buy the wrong SSD? (25nm vs 34nm NAND) - Page 3

post #21 of 32
Quote:
Originally Posted by TwoCables View Post
So is it just increased wear-leveling?

No.... it is slowing down on purpose. The controller says if this continues at this rate, the NAND is going to wear out sooner..... so it decides to slow down.

If these writes are needed, this is a bad thing.
Once again...
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 [4.28GHz, HT] Asus P6T + Broadcom NetXtreme II VisionTek HD5850 [900/1200] + Galaxy GT240 2x4GB G.Skill Ripjaw X [1632 MHz] 
Hard DriveOSMonitorKeyboard
Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
PowerCaseMouseMouse Pad
Antec Truepower New 750W Li Lian PC-V2100 [10x120mm fans] Logitech G9 X-Trac Pro 
  hide details  
Reply
Once again...
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 [4.28GHz, HT] Asus P6T + Broadcom NetXtreme II VisionTek HD5850 [900/1200] + Galaxy GT240 2x4GB G.Skill Ripjaw X [1632 MHz] 
Hard DriveOSMonitorKeyboard
Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
PowerCaseMouseMouse Pad
Antec Truepower New 750W Li Lian PC-V2100 [10x120mm fans] Logitech G9 X-Trac Pro 
  hide details  
Reply
post #22 of 32
Quote:
Originally Posted by DuckieHo View Post
Ok, from what I read... it is not "Slower writes will increase NAND longevity."

It is slower writes means less writes will occur in a given time. If you have to write something, this won't increase NAND longevity because the data eventually has to be written.
If you have a drive in an enterprise application like a server or something and it is being written to 24 hours a day 7 days a week which drive will use up it's write cycles quicker, the one that writes 25k IOPS or the one that can do 50k IOPS?

It's all about ensuring the drives 3 year warranty period.
Edited by sgilmore62 - 3/17/11 at 7:39pm
    
CPUMotherboardGraphicsRAM
i7-930 Asus P6x-58D Premium HD5970+5870 950/1200 12gb Kingston HyperX 
Hard DriveOptical DriveOSMonitor
3x100GbOCZ VertexLE+2x120Gb Vertex2 RAID0 LG Win7 Professional Asus M276HE 
KeyboardPowerCaseMouse
Razer Lycosa ABS 1100watt Thermaltake SwordM Razer DeathAdder 
Mouse Pad
wowpad 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7-930 Asus P6x-58D Premium HD5970+5870 950/1200 12gb Kingston HyperX 
Hard DriveOptical DriveOSMonitor
3x100GbOCZ VertexLE+2x120Gb Vertex2 RAID0 LG Win7 Professional Asus M276HE 
KeyboardPowerCaseMouse
Razer Lycosa ABS 1100watt Thermaltake SwordM Razer DeathAdder 
Mouse Pad
wowpad 
  hide details  
Reply
post #23 of 32
Quote:
Originally Posted by sgilmore62 View Post
If you have a drive in an enterprise application like a server or something and it is being written to 24 hours a day 7 days a week which drive will use up it's write cycles quicker, the one that writes 25k IOPS or the one that can do 50k IOPS?

It's all about ensuring the drives 3 year warranty period.
that's like asking is a pound of bricks or a pound of feathers weighs more.

they'll do the amount of work required to be done, one will just do it more quickly.
post #24 of 32
Quote:
Originally Posted by Deagle50ae View Post
that's like asking is a pound of bricks or a pound of feathers weighs more.

they'll do the amount of work required to be done, one will just do it more quickly.
No, it isn't anything like asking what weighs more. The amount of work over a three year period is theoretically infinite and unknown to the controller(but is known to you apparantly). If two drives are being written to constantly, 24/7/365, the drive that can do 50k IOPS should do twice the work of one that can do 25k IOPS.
    
CPUMotherboardGraphicsRAM
i7-930 Asus P6x-58D Premium HD5970+5870 950/1200 12gb Kingston HyperX 
Hard DriveOptical DriveOSMonitor
3x100GbOCZ VertexLE+2x120Gb Vertex2 RAID0 LG Win7 Professional Asus M276HE 
KeyboardPowerCaseMouse
Razer Lycosa ABS 1100watt Thermaltake SwordM Razer DeathAdder 
Mouse Pad
wowpad 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7-930 Asus P6x-58D Premium HD5970+5870 950/1200 12gb Kingston HyperX 
Hard DriveOptical DriveOSMonitor
3x100GbOCZ VertexLE+2x120Gb Vertex2 RAID0 LG Win7 Professional Asus M276HE 
KeyboardPowerCaseMouse
Razer Lycosa ABS 1100watt Thermaltake SwordM Razer DeathAdder 
Mouse Pad
wowpad 
  hide details  
Reply
post #25 of 32
Quote:
Originally Posted by sgilmore62 View Post
No, it isn't anything like asking what weighs more. The amount of work over a three year period is theoretically infinite and unknown to the controller(but is known to you apparantly). If two drives are being written to constantly, 24/7/365, the drive that can do 50k IOPS should do twice the work of one that can do 25k IOPS.
Yes, but SandForce is making the assumption that this will not occur.... hence the throttling.

Requested writes must be completed. The drive cannot choose not to complete a write. Throttle just lowers performance based on the assumption that the workload is unrealistic.
Once again...
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 [4.28GHz, HT] Asus P6T + Broadcom NetXtreme II VisionTek HD5850 [900/1200] + Galaxy GT240 2x4GB G.Skill Ripjaw X [1632 MHz] 
Hard DriveOSMonitorKeyboard
Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
PowerCaseMouseMouse Pad
Antec Truepower New 750W Li Lian PC-V2100 [10x120mm fans] Logitech G9 X-Trac Pro 
  hide details  
Reply
Once again...
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 920 [4.28GHz, HT] Asus P6T + Broadcom NetXtreme II VisionTek HD5850 [900/1200] + Galaxy GT240 2x4GB G.Skill Ripjaw X [1632 MHz] 
Hard DriveOSMonitorKeyboard
Intel X25-M 160GB + 3xRAID0 500GB 7200.12 Window 7 Pro 64 Acer H243H + Samsung 226BW XARMOR-U9BL  
PowerCaseMouseMouse Pad
Antec Truepower New 750W Li Lian PC-V2100 [10x120mm fans] Logitech G9 X-Trac Pro 
  hide details  
Reply
post #26 of 32
Quote:
Originally Posted by DuckieHo View Post
What is a throttled write? A write has to occur or it isn't a write....
I think he means delayed write, while it waits for more data to write to more efficiently organize it. I hope that's what he means anyway... there's no such thing as a throttled write.
post #27 of 32
Quote:
Originally Posted by SgtSpike View Post
Just be glad you didn't order a Vertex 2 25nm drive. Performance drops nearly in half for the 25nm version, and so does the lifespan.
I did gambling that I wouldn't get the 25nm version

The url for the webpage I got mine (according to others) did say it was the 34nm but I won't know until it gets here hopefully today.

I did just order another ssd today though since there was a promotion where you would get shogun 2 for free with it so now I will soon have 2 ssd's
Silence
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 930 @ 4ghz HT Asus Rampage III Extreme ATI 5830 Corsair Dominator GT 6gb CAS 7 
Hard DriveOSKeyboardPower
50gb Vertex 2 - OS,1.5tb Storage Win7 64 bit Saitek Cyborg OCZ 700W 
CaseMouseMouse Pad
Define R3 Logitech G500 Steelseries Glass 
  hide details  
Reply
Silence
(13 items)
 
  
CPUMotherboardGraphicsRAM
i7 930 @ 4ghz HT Asus Rampage III Extreme ATI 5830 Corsair Dominator GT 6gb CAS 7 
Hard DriveOSKeyboardPower
50gb Vertex 2 - OS,1.5tb Storage Win7 64 bit Saitek Cyborg OCZ 700W 
CaseMouseMouse Pad
Define R3 Logitech G500 Steelseries Glass 
  hide details  
Reply
post #28 of 32
Quote:
Originally Posted by DuckieHo View Post
Yes, but SandForce is making the assumption that this will not occur.... hence the throttling.

Requested writes must be completed. The drive cannot choose not to complete a write. Throttle just lowers performance based on the assumption that the workload is unrealistic.
Whoever said throttling means writes are not going to be completed? You did! Throttling does not lower performance based on the assumption that the workload is unrealistic, it lowers performance based on life write cycles. If the drives controller calculates a usage pattern that will exceed life write cycles within warranty period it will throttle write speeds.
    
CPUMotherboardGraphicsRAM
i7-930 Asus P6x-58D Premium HD5970+5870 950/1200 12gb Kingston HyperX 
Hard DriveOptical DriveOSMonitor
3x100GbOCZ VertexLE+2x120Gb Vertex2 RAID0 LG Win7 Professional Asus M276HE 
KeyboardPowerCaseMouse
Razer Lycosa ABS 1100watt Thermaltake SwordM Razer DeathAdder 
Mouse Pad
wowpad 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7-930 Asus P6x-58D Premium HD5970+5870 950/1200 12gb Kingston HyperX 
Hard DriveOptical DriveOSMonitor
3x100GbOCZ VertexLE+2x120Gb Vertex2 RAID0 LG Win7 Professional Asus M276HE 
KeyboardPowerCaseMouse
Razer Lycosa ABS 1100watt Thermaltake SwordM Razer DeathAdder 
Mouse Pad
wowpad 
  hide details  
Reply
post #29 of 32
Quote:
Originally Posted by DuckieHo View Post
Ok, from what I read... it is not "Slower writes will increase NAND longevity."

It is slower writes means less writes will occur in a given time. If you have to write something, this won't increase NAND longevity because the data eventually has to be written.
Quote:
Duraclass kicks in to limit write speed to ensure longevity of the nand on the drive.
http://www.ocztechnologyforum.com/fo...rite-throttle&

Reading comprehension skills?
    
CPUMotherboardGraphicsRAM
i7-930 Asus P6x-58D Premium HD5970+5870 950/1200 12gb Kingston HyperX 
Hard DriveOptical DriveOSMonitor
3x100GbOCZ VertexLE+2x120Gb Vertex2 RAID0 LG Win7 Professional Asus M276HE 
KeyboardPowerCaseMouse
Razer Lycosa ABS 1100watt Thermaltake SwordM Razer DeathAdder 
Mouse Pad
wowpad 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i7-930 Asus P6x-58D Premium HD5970+5870 950/1200 12gb Kingston HyperX 
Hard DriveOptical DriveOSMonitor
3x100GbOCZ VertexLE+2x120Gb Vertex2 RAID0 LG Win7 Professional Asus M276HE 
KeyboardPowerCaseMouse
Razer Lycosa ABS 1100watt Thermaltake SwordM Razer DeathAdder 
Mouse Pad
wowpad 
  hide details  
Reply
post #30 of 32
It depends more on the design of the drive, The vertex 2 OCZ tried to pull a switch thinking people wouldn't notice, but if the drive was designed for 25nm that could be a different story. It depends more on the controller and design than the nand itself
Eclipse
(16 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 4790K ASRock Z97 Extreme4 Sapphire Radeon RX480 Nitro OC 32GB Gskill 2133 DDR3 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 850 EVO 250GB Toshiba P300 1TB 7200RPM WD Blue 3TB Samsung Dual Layer DVD-RW 
CoolingOSMonitorKeyboard
Hyper 212+ Push Pull Windows 7 Ultimate X64 Samsung 23" 1080P MS Wireless Keyboard 4000 
PowerCaseMouseMouse Pad
Corsair HX 650W Rosewill Blackhawk MS Wireless Laser Mouse 5000 Steel Series 
  hide details  
Reply
Eclipse
(16 items)
 
  
CPUMotherboardGraphicsRAM
Core i7 4790K ASRock Z97 Extreme4 Sapphire Radeon RX480 Nitro OC 32GB Gskill 2133 DDR3 
Hard DriveHard DriveHard DriveOptical Drive
Samsung 850 EVO 250GB Toshiba P300 1TB 7200RPM WD Blue 3TB Samsung Dual Layer DVD-RW 
CoolingOSMonitorKeyboard
Hyper 212+ Push Pull Windows 7 Ultimate X64 Samsung 23" 1080P MS Wireless Keyboard 4000 
PowerCaseMouseMouse Pad
Corsair HX 650W Rosewill Blackhawk MS Wireless Laser Mouse 5000 Steel Series 
  hide details  
Reply
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: SSD
Overclock.net › Forums › Components › Hard Drives & Storage › SSD › Did I buy the wrong SSD? (25nm vs 34nm NAND)