Author Topic: UDMA speeds  (Read 689 times)

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Offline chrisNova777

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UDMA speeds
« on: December 08, 2018, 07:54:51 AM »
https://en.wikipedia.org/wiki/UDMA


Quote
UDMA0 16MB/s (ATA-4)
UDMA1 25MB/s (ATA-4)
UDMA2 33MB/s (ATA-4)
UDMA3 44MB/s (ATA-5)
UDMA4 66MB/s (ATA-5)
UDMA5 100MB/s (ATA-6)
UDMA6 133MB/s (ATA-7)
UDMA7 167MB/s (CompactFlash 6.0)

Offline chrisNova777

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ata speeds
« Reply #1 on: December 08, 2018, 08:09:09 AM »
https://en.wikipedia.org/wiki/Parallel_ATA
http://www.pcguide.com/ref/hdd/if/ide/stdATA3-c.html
http://www.informit.com/articles/article.aspx?p=2028834&seqNum=2

Quote
1 Standard   
2 Proposed   
3 Published   
4 Withdrawn
5 PIO Modes   
6 DMA Modes   
7 UDMA Modes   
8 Parallel Speed (MBps)   
9 Serial Speed (MBps)   

Code: [Select]
1 2 3 4 5 6 7 8 9
ATA-1 1988 1994 1999 0–2 0 —    8.33 -
ATA-2 1993 1996 2001 0–4 0–2 —    16.67
ATA-3 1995 1997 2002 0–4 0–2 —    16.67 -
ATA-4 1996 1998 2012 0–4 0–2 0–2 33.33
ATA-5 1998 2000 0–4 0–2 0-4 66.67
ATA-6 2000 2002 0–4 0–2 0-5 100
ATA-7 2001 2004 0–4 0–2 0-6 133 150
ATA-8 2004 0–4 0–2 0-6 133 600
ATA/8? = ATA-1 = 1988+
ATA/16? = ATA-2 = 1993+
ATA/16? = ATA-3 = 1995+
ATA/33 = ATA-4 = 1996+
ATA/66 = ATA-5 = 1998+
ATA/100 = ATA-6 = 2000+
ATA/133 = ATA-7 = 2001+

Quote
S.M.A.R.T. = Self-Monitoring, Analysis, and Reporting Technology

ATAPI = AT Attachment Packet Interface
MB = Megabyte; million bytes
GB = Gigabyte; billion bytes
PB = Petabyte; quadrillion bytes
CHS = Cylinder, Head, Sector
LBA = Logical block address
PIO = Programmed I/O
DMA = direct memory access
UDMA = Ultra DMA (direct memory access)
« Last Edit: December 09, 2018, 01:15:09 AM by chrisNova777 »

Offline chrisNova777

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PIO speeds
« Reply #2 on: December 08, 2018, 12:09:42 PM »
https://en.wikipedia.org/wiki/Programmed_input/output


Quote
PIO modes
Mode   Maximum transfer rate (MB/s)   Minimum cycle time   Standard where spec is defined
Mode 0   3.3   600 ns   ATA-1
Mode 1   5.2   383 ns   ATA-1
Mode 2   8.3   240 ns   ATA-1
Mode 3   11.1   180 ns   ATA-2
Mode 4   16.7   120 ns   ATA-2
Mode 5   20   100 ns   CompactFlash 2.0
Mode 6   25   80 ns   CompactFlash 2.0
« Last Edit: July 13, 2019, 12:13:01 AM by chrisNova777 »