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Slow/unstable file copy with Caviar Black 2 TB

post #1 of 8
Thread Starter 
Recently, I've noticed that if I copy a large file from one folder to another (on the same HDD), the speeds are not stable anymore. Before, it would be pegged at around 140 MB/sec throughout the transfer. Now, it stays below 80 MB/sec and keeps slowing down (to around 30 MB/sec) and speeding up. If I benchmark my HDD, the scores are fine. Any guesses as to what the issue is?
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Intel Core i7-3930K GIGABYTE GA-X79-UD3 EVGA GeForce GTX 980 Ti Classified 16 GB Corsair Dominator Platinium DDR3 2133 MHz 
Hard DriveHard DriveOptical DriveCooling
Crucial m4 256 GB Western Digital Caviar Black 2 TB Pioneer BDR-206DBK Corsair Hydro Series H100 
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2 x Scythe GentleTyphoon 1850 rpm fans for H100 Microsoft Windows 10 Pro 64-bit Samsung SyncMaster S23A700D Microsoft SideWinder X4 
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Corsair Professional Series Gold AX850 Corsair Obsidian Series 650D Logitech G9x SteelSeries QcK mini 
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post #2 of 8
Thread Starter 
Just did a benchmark. Is this normal?

My desktop
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Intel Core i7-3930K GIGABYTE GA-X79-UD3 EVGA GeForce GTX 980 Ti Classified 16 GB Corsair Dominator Platinium DDR3 2133 MHz 
Hard DriveHard DriveOptical DriveCooling
Crucial m4 256 GB Western Digital Caviar Black 2 TB Pioneer BDR-206DBK Corsair Hydro Series H100 
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2 x Scythe GentleTyphoon 1850 rpm fans for H100 Microsoft Windows 10 Pro 64-bit Samsung SyncMaster S23A700D Microsoft SideWinder X4 
PowerCaseMouseMouse Pad
Corsair Professional Series Gold AX850 Corsair Obsidian Series 650D Logitech G9x SteelSeries QcK mini 
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My desktop
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Intel Core i7-3930K GIGABYTE GA-X79-UD3 EVGA GeForce GTX 980 Ti Classified 16 GB Corsair Dominator Platinium DDR3 2133 MHz 
Hard DriveHard DriveOptical DriveCooling
Crucial m4 256 GB Western Digital Caviar Black 2 TB Pioneer BDR-206DBK Corsair Hydro Series H100 
CoolingOSMonitorKeyboard
2 x Scythe GentleTyphoon 1850 rpm fans for H100 Microsoft Windows 10 Pro 64-bit Samsung SyncMaster S23A700D Microsoft SideWinder X4 
PowerCaseMouseMouse Pad
Corsair Professional Series Gold AX850 Corsair Obsidian Series 650D Logitech G9x SteelSeries QcK mini 
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post #3 of 8
Thread Starter 
Anyone? If the HDD benchmarks fine does that mean the HDD is fine and the below average performance within Windows is being caused by Windows?
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Intel Core i7-3930K GIGABYTE GA-X79-UD3 EVGA GeForce GTX 980 Ti Classified 16 GB Corsair Dominator Platinium DDR3 2133 MHz 
Hard DriveHard DriveOptical DriveCooling
Crucial m4 256 GB Western Digital Caviar Black 2 TB Pioneer BDR-206DBK Corsair Hydro Series H100 
CoolingOSMonitorKeyboard
2 x Scythe GentleTyphoon 1850 rpm fans for H100 Microsoft Windows 10 Pro 64-bit Samsung SyncMaster S23A700D Microsoft SideWinder X4 
PowerCaseMouseMouse Pad
Corsair Professional Series Gold AX850 Corsair Obsidian Series 650D Logitech G9x SteelSeries QcK mini 
AudioAudio
Creative Sound Blaster X-Fi Titanium HD 2 x JBL LSR305 + 1 x JBL LSR310S 
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My desktop
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-3930K GIGABYTE GA-X79-UD3 EVGA GeForce GTX 980 Ti Classified 16 GB Corsair Dominator Platinium DDR3 2133 MHz 
Hard DriveHard DriveOptical DriveCooling
Crucial m4 256 GB Western Digital Caviar Black 2 TB Pioneer BDR-206DBK Corsair Hydro Series H100 
CoolingOSMonitorKeyboard
2 x Scythe GentleTyphoon 1850 rpm fans for H100 Microsoft Windows 10 Pro 64-bit Samsung SyncMaster S23A700D Microsoft SideWinder X4 
PowerCaseMouseMouse Pad
Corsair Professional Series Gold AX850 Corsair Obsidian Series 650D Logitech G9x SteelSeries QcK mini 
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Creative Sound Blaster X-Fi Titanium HD 2 x JBL LSR305 + 1 x JBL LSR310S 
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post #4 of 8
Do a bench using HDtune and post a screenshot
:D
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:D
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Intel i5 3570K [4.5ghz] Asus P8Z77 V-Pro Asus GTX 760 2X4gb Corsair XMS3 1600mhz 
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WD Blue 1TB EZEX X 2 [RAID 0] [WD Black 640GB][2 X WD Blue 1TB EZEX] Corsair H80i Windows 7 64bit 
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post #5 of 8
Thread Starter 
My desktop
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-3930K GIGABYTE GA-X79-UD3 EVGA GeForce GTX 980 Ti Classified 16 GB Corsair Dominator Platinium DDR3 2133 MHz 
Hard DriveHard DriveOptical DriveCooling
Crucial m4 256 GB Western Digital Caviar Black 2 TB Pioneer BDR-206DBK Corsair Hydro Series H100 
CoolingOSMonitorKeyboard
2 x Scythe GentleTyphoon 1850 rpm fans for H100 Microsoft Windows 10 Pro 64-bit Samsung SyncMaster S23A700D Microsoft SideWinder X4 
PowerCaseMouseMouse Pad
Corsair Professional Series Gold AX850 Corsair Obsidian Series 650D Logitech G9x SteelSeries QcK mini 
AudioAudio
Creative Sound Blaster X-Fi Titanium HD 2 x JBL LSR305 + 1 x JBL LSR310S 
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My desktop
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-3930K GIGABYTE GA-X79-UD3 EVGA GeForce GTX 980 Ti Classified 16 GB Corsair Dominator Platinium DDR3 2133 MHz 
Hard DriveHard DriveOptical DriveCooling
Crucial m4 256 GB Western Digital Caviar Black 2 TB Pioneer BDR-206DBK Corsair Hydro Series H100 
CoolingOSMonitorKeyboard
2 x Scythe GentleTyphoon 1850 rpm fans for H100 Microsoft Windows 10 Pro 64-bit Samsung SyncMaster S23A700D Microsoft SideWinder X4 
PowerCaseMouseMouse Pad
Corsair Professional Series Gold AX850 Corsair Obsidian Series 650D Logitech G9x SteelSeries QcK mini 
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Creative Sound Blaster X-Fi Titanium HD 2 x JBL LSR305 + 1 x JBL LSR310S 
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post #6 of 8
Your graph looks fine.

Infact your speeds are normal since you're copying to and from the same HDD. The head has to move up and down continuously which results in slow speeds while copying.

Try copying from one HDD to another, your speeds will be back.
:D
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Intel i5 3570K [4.5ghz] Asus P8Z77 V-Pro Asus GTX 760 2X4gb Corsair XMS3 1600mhz 
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WD Blue 1TB EZEX X 2 [RAID 0] [WD Black 640GB][2 X WD Blue 1TB EZEX] Corsair H80i Windows 7 64bit 
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:D
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WD Blue 1TB EZEX X 2 [RAID 0] [WD Black 640GB][2 X WD Blue 1TB EZEX] Corsair H80i Windows 7 64bit 
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Dell Ultrasharp 23" Corsair CX430W v2 Corsair Graphite 600T 
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post #7 of 8
Thread Starter 
Even if I copy from my SSD to the HDD I am not getting the same speeds as before. Heck, before, I could copy from the HDD to another location on the same HDD and it would be pegged at 140 MB/sec. Maybe it is just time to reinstall Windows.
My desktop
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-3930K GIGABYTE GA-X79-UD3 EVGA GeForce GTX 980 Ti Classified 16 GB Corsair Dominator Platinium DDR3 2133 MHz 
Hard DriveHard DriveOptical DriveCooling
Crucial m4 256 GB Western Digital Caviar Black 2 TB Pioneer BDR-206DBK Corsair Hydro Series H100 
CoolingOSMonitorKeyboard
2 x Scythe GentleTyphoon 1850 rpm fans for H100 Microsoft Windows 10 Pro 64-bit Samsung SyncMaster S23A700D Microsoft SideWinder X4 
PowerCaseMouseMouse Pad
Corsair Professional Series Gold AX850 Corsair Obsidian Series 650D Logitech G9x SteelSeries QcK mini 
AudioAudio
Creative Sound Blaster X-Fi Titanium HD 2 x JBL LSR305 + 1 x JBL LSR310S 
  hide details  
Reply
My desktop
(18 items)
 
  
CPUMotherboardGraphicsRAM
Intel Core i7-3930K GIGABYTE GA-X79-UD3 EVGA GeForce GTX 980 Ti Classified 16 GB Corsair Dominator Platinium DDR3 2133 MHz 
Hard DriveHard DriveOptical DriveCooling
Crucial m4 256 GB Western Digital Caviar Black 2 TB Pioneer BDR-206DBK Corsair Hydro Series H100 
CoolingOSMonitorKeyboard
2 x Scythe GentleTyphoon 1850 rpm fans for H100 Microsoft Windows 10 Pro 64-bit Samsung SyncMaster S23A700D Microsoft SideWinder X4 
PowerCaseMouseMouse Pad
Corsair Professional Series Gold AX850 Corsair Obsidian Series 650D Logitech G9x SteelSeries QcK mini 
AudioAudio
Creative Sound Blaster X-Fi Titanium HD 2 x JBL LSR305 + 1 x JBL LSR310S 
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Reply
post #8 of 8
    Perhaps the drive was nearly filled at one time (or is over half-full right now) so all the writes are being done towards the end of the drive, which is slower to read and write.  Another possibility is that the drive had a lot of small files on it at one time which has broken its freespace into many small pieces.
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Kingston SV300S3 WesternDigital WD10EZEX Samsung HD154UI Windows 7 Ultimate SP1 x64 
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