UDMA speeds

[chrisNova777]

https://en.wikipedia.org/wiki/UDMA

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)

[chrisNova777]

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

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4 Withdrawn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+

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)

[chrisNova777]

https://en.wikipedia.org/wiki/Programmed_input/output

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