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HD Tune Burst Rate

post #1 of 22
Thread Starter 
What does Burst Rate signify in HD Tune? Why is it not a consistent value over several tests?
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post #2 of 22
Quote:
Originally Posted by kevindd992002 View Post
What does Burst Rate signify in HD Tune? Why is it not a consistent value over several tests?
The burst rate is the highest speed (in megabytes per second) at which data can be transferred from the drive interface (IDE or SCSI for example) to the operating system.

Credit: I took this form HD Tune's help file.
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post #3 of 22
This value usually comes from the speed of the onboard cache. My RAID scores more than 3,000MB/s for burst, for example, but only acheives a maximum sustained rate of about 315MB/s.
    
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post #4 of 22
Quote:
This value usually comes from the speed of the onboard cache.
Winner!
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post #5 of 22
Thread Starter 
But why isn't it consistent for every test?
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post #6 of 22
Quote:
Originally Posted by kevindd992002 View Post
But why isn't it consistent for every test?
How inconsistent is it?
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Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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It's a computer!
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CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
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post #7 of 22
Quote:
Originally Posted by chatch15117 View Post
This value usually comes from the speed of the onboard cache. My RAID scores more than 3,000MB/s for burst, for example, but only acheives a maximum sustained rate of about 315MB/s.
I'm pretty sure the ridiculously high burst values are reported on Intel controllers when you have write-back cache enabled, which uses your RAM. I could be wrong though
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magg0rt
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post #8 of 22
Quote:
Originally Posted by tehmaggot View Post
I'm pretty sure the ridiculously high burst values are reported on Intel controllers when you have write-back cache enabled, which uses your RAM. I could be wrong though
Yup... HD Tune is just reading from main memory...
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Once again...
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post #9 of 22
Thread Starter 
Well, sometimes it's about 300+ MBps, sometimes it's reaching thousands..
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My System
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CPUMotherboardGraphicsRAM
Intel Core i7-2600K Asus P8Z68-V/GEN3 EVGA GTX 1080 Ti FTW3 2x8GB G.Skill Trident X (F3-2400C10D-16GTX) @ 2... 
Hard DriveHard DriveCoolingOS
Samsung 850 EVO 500GB Samsung Spinpoint F3 1TB CPU: Swiftech H220-X Windows 10 x64 Enterprise 
MonitorKeyboardPowerCase
Dell S2716DG Ducky Shine 3 DK9008 MX Brown and Red LED Seasonic P-760 SS-760XP2 Cooler Master HAF 922 
MouseMouse PadAudioAudio
Roccat Savu Steelseries QCK Mass Edifier HCS2330 2.1 Speaker System (using Onboa... HyperX Cloud Revolver Gaming Headset 
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post #10 of 22
Quote:
Originally Posted by kevindd992002 View Post
Well, sometimes it's about 300+ MBps, sometimes it's reaching thousands..
What else do leave running while doing the benchmark? It's important to close as much as you possibly can before doing any benchmark.
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.368-1.384V fixed voltage) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:\) 250 GB Samsung 840 EVO (D:\) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG (24" 1920 x 1080 144Hz G-SYNC) 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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