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How to Convert from IDE (UDMA-33) to IDE (PIO mode 4)
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How to Convert from IDE (UDMA-33) to IDE (PIO mode 4)

Learn how to convert IDE (UDMA-33) to IDE (PIO mode 4) data transfer rates for legacy PATA devices. Understand the differences, conversion formula, and practical applications in vintage computing and troubleshooting.

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IDE (UDMA-33) to IDE (PIO mode 4) Conversion Table

IDE (UDMA-33) IDE (PIO mode 4)

Custom Unit Conversion Table Generator – Instant Printable Conversion Tables

Enter the starting number (positive decimal or integer ≥ 0). Example: 0.1, 1, 5.
Enter the ending number (positive decimal or integer > Start Value). Example: 10, 50, 100.
Enter the step size (positive decimal > 0 and < End Value – Start Value). Example: 1.0, 2.5.
IDE (UDMA-33) to IDE (PIO mode 4) Conversion Table
IDE (UDMA-33) IDE (PIO mode 4)

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  10. How to convert from IDE (UDMA-33) to kilobit/second [kb/s]?
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  12. How to convert from IDE (UDMA-33) to kilobyte/second [kB/s]?
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  14. How to convert from IDE (UDMA-33) to megabit/second (SI def.)?
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  16. How to convert from IDE (UDMA-33) to megabyte/second (SI def.)?
  17. How to convert from megabit/second [Mb/s] to IDE (UDMA-33)?
  18. How to convert from IDE (UDMA-33) to megabit/second [Mb/s]?
  19. How to convert from megabyte/second [MB/s] to IDE (UDMA-33)?
  20. How to convert from IDE (UDMA-33) to megabyte/second [MB/s]?
  21. How to convert from gigabit/second (SI def.) to IDE (UDMA-33)?
  22. How to convert from IDE (UDMA-33) to gigabit/second (SI def.)?
  23. How to convert from gigabyte/second (SI def.) to IDE (UDMA-33)?
  24. How to convert from IDE (UDMA-33) to gigabyte/second (SI def.)?
  25. How to convert from gigabit/second [Gb/s] to IDE (UDMA-33)?
  26. How to convert from IDE (UDMA-33) to gigabit/second [Gb/s]?
  27. How to convert from gigabyte/second [GB/s] to IDE (UDMA-33)?
  28. How to convert from IDE (UDMA-33) to gigabyte/second [GB/s]?
  29. How to convert from terabit/second (SI def.) to IDE (UDMA-33)?
  30. How to convert from IDE (UDMA-33) to terabit/second (SI def.)?
  31. How to convert from terabyte/second (SI def.) to IDE (UDMA-33)?
  32. How to convert from IDE (UDMA-33) to terabyte/second (SI def.)?
  33. How to convert from terabit/second [Tb/s] to IDE (UDMA-33)?
  34. How to convert from IDE (UDMA-33) to terabit/second [Tb/s]?
  35. How to convert from terabyte/second [TB/s] to IDE (UDMA-33)?
  36. How to convert from IDE (UDMA-33) to terabyte/second [TB/s]?
  37. How to convert from ethernet to IDE (UDMA-33)?
  38. How to convert from IDE (UDMA-33) to ethernet?
  39. How to convert from ethernet (fast) to IDE (UDMA-33)?
  40. How to convert from IDE (UDMA-33) to ethernet (fast)?
  41. How to convert from ethernet (gigabit) to IDE (UDMA-33)?
  42. How to convert from IDE (UDMA-33) to ethernet (gigabit)?
  43. How to convert from OC1 to IDE (UDMA-33)?
  44. How to convert from IDE (UDMA-33) to OC1?
  45. How to convert from OC3 to IDE (UDMA-33)?
  46. How to convert from IDE (UDMA-33) to OC3?
  47. How to convert from OC12 to IDE (UDMA-33)?
  48. How to convert from IDE (UDMA-33) to OC12?
  49. How to convert from OC24 to IDE (UDMA-33)?
  50. How to convert from IDE (UDMA-33) to OC24?
  51. How to convert from OC48 to IDE (UDMA-33)?
  52. How to convert from IDE (UDMA-33) to OC48?
  53. How to convert from OC192 to IDE (UDMA-33)?
  54. How to convert from IDE (UDMA-33) to OC192?
  55. How to convert from OC768 to IDE (UDMA-33)?
  56. How to convert from IDE (UDMA-33) to OC768?
  57. How to convert from ISDN (single channel) to IDE (UDMA-33)?
  58. How to convert from IDE (UDMA-33) to ISDN (single channel)?
  59. How to convert from ISDN (dual channel) to IDE (UDMA-33)?
  60. How to convert from IDE (UDMA-33) to ISDN (dual channel)?
  61. How to convert from modem (110) to IDE (UDMA-33)?
  62. How to convert from IDE (UDMA-33) to modem (110)?
  63. How to convert from modem (300) to IDE (UDMA-33)?
  64. How to convert from IDE (UDMA-33) to modem (300)?
  65. How to convert from modem (1200) to IDE (UDMA-33)?
  66. How to convert from IDE (UDMA-33) to modem (1200)?
  67. How to convert from modem (2400) to IDE (UDMA-33)?
  68. How to convert from IDE (UDMA-33) to modem (2400)?
  69. How to convert from modem (9600) to IDE (UDMA-33)?
  70. How to convert from IDE (UDMA-33) to modem (9600)?
  71. How to convert from modem (14.4k) to IDE (UDMA-33)?
  72. How to convert from IDE (UDMA-33) to modem (14.4k)?
  73. How to convert from modem (28.8k) to IDE (UDMA-33)?
  74. How to convert from IDE (UDMA-33) to modem (28.8k)?
  75. How to convert from modem (33.6k) to IDE (UDMA-33)?
  76. How to convert from IDE (UDMA-33) to modem (33.6k)?
  77. How to convert from modem (56k) to IDE (UDMA-33)?
  78. How to convert from IDE (UDMA-33) to modem (56k)?
  79. How to convert from SCSI (Async) to IDE (UDMA-33)?
  80. How to convert from IDE (UDMA-33) to SCSI (Async)?
  81. How to convert from SCSI (Sync) to IDE (UDMA-33)?
  82. How to convert from IDE (UDMA-33) to SCSI (Sync)?
  83. How to convert from SCSI (Fast) to IDE (UDMA-33)?
  84. How to convert from IDE (UDMA-33) to SCSI (Fast)?
  85. How to convert from SCSI (Fast Ultra) to IDE (UDMA-33)?
  86. How to convert from IDE (UDMA-33) to SCSI (Fast Ultra)?
  87. How to convert from SCSI (Fast Wide) to IDE (UDMA-33)?
  88. How to convert from IDE (UDMA-33) to SCSI (Fast Wide)?
  89. How to convert from SCSI (Fast Ultra Wide) to IDE (UDMA-33)?
  90. How to convert from IDE (UDMA-33) to SCSI (Fast Ultra Wide)?
  91. How to convert from SCSI (Ultra-2) to IDE (UDMA-33)?
  92. How to convert from IDE (UDMA-33) to SCSI (Ultra-2)?
  93. How to convert from SCSI (Ultra-3) to IDE (UDMA-33)?
  94. How to convert from IDE (UDMA-33) to SCSI (Ultra-3)?
  95. How to convert from SCSI (LVD Ultra80) to IDE (UDMA-33)?
  96. How to convert from IDE (UDMA-33) to SCSI (LVD Ultra80)?
  97. How to convert from SCSI (LVD Ultra160) to IDE (UDMA-33)?
  98. How to convert from IDE (UDMA-33) to SCSI (LVD Ultra160)?
  99. How to convert from IDE (PIO mode 0) to IDE (UDMA-33)?
  100. How to convert from IDE (UDMA-33) to IDE (PIO mode 0)?
  101. How to convert from IDE (PIO mode 1) to IDE (UDMA-33)?
  102. How to convert from IDE (UDMA-33) to IDE (PIO mode 1)?
  103. How to convert from IDE (PIO mode 2) to IDE (UDMA-33)?
  104. How to convert from IDE (UDMA-33) to IDE (PIO mode 2)?
  105. How to convert from IDE (PIO mode 3) to IDE (UDMA-33)?
  106. How to convert from IDE (UDMA-33) to IDE (PIO mode 3)?
  107. How to convert from IDE (PIO mode 4) to IDE (UDMA-33)?
  108. How to convert from IDE (UDMA-33) to IDE (PIO mode 4)?
  109. How to convert from IDE (DMA mode 0) to IDE (UDMA-33)?
  110. How to convert from IDE (UDMA-33) to IDE (DMA mode 0)?
  111. How to convert from IDE (DMA mode 1) to IDE (UDMA-33)?
  112. How to convert from IDE (UDMA-33) to IDE (DMA mode 1)?
  113. How to convert from IDE (DMA mode 2) to IDE (UDMA-33)?
  114. How to convert from IDE (UDMA-33) to IDE (DMA mode 2)?
  115. How to convert from IDE (UDMA mode 0) to IDE (UDMA-33)?
  116. How to convert from IDE (UDMA-33) to IDE (UDMA mode 0)?
  117. How to convert from IDE (UDMA mode 1) to IDE (UDMA-33)?
  118. How to convert from IDE (UDMA-33) to IDE (UDMA mode 1)?
  119. How to convert from IDE (UDMA mode 2) to IDE (UDMA-33)?
  120. How to convert from IDE (UDMA-33) to IDE (UDMA mode 2)?
  121. How to convert from IDE (UDMA mode 3) to IDE (UDMA-33)?
  122. How to convert from IDE (UDMA-33) to IDE (UDMA mode 3)?
  123. How to convert from IDE (UDMA mode 4) to IDE (UDMA-33)?
  124. How to convert from IDE (UDMA-33) to IDE (UDMA mode 4)?
  125. How to convert from IDE (UDMA-66) to IDE (UDMA-33)?
  126. How to convert from IDE (UDMA-33) to IDE (UDMA-66)?
  127. How to convert from USB to IDE (UDMA-33)?
  128. How to convert from IDE (UDMA-33) to USB?
  129. How to convert from firewire (IEEE-1394) to IDE (UDMA-33)?
  130. How to convert from IDE (UDMA-33) to firewire (IEEE-1394)?
  131. How to convert from T0 (payload) to IDE (UDMA-33)?
  132. How to convert from IDE (UDMA-33) to T0 (payload)?
  133. How to convert from T0 (B8ZS payload) to IDE (UDMA-33)?
  134. How to convert from IDE (UDMA-33) to T0 (B8ZS payload)?
  135. How to convert from T1 (signal) to IDE (UDMA-33)?
  136. How to convert from IDE (UDMA-33) to T1 (signal)?
  137. How to convert from T1 (payload) to IDE (UDMA-33)?
  138. How to convert from IDE (UDMA-33) to T1 (payload)?
  139. How to convert from T1Z (payload) to IDE (UDMA-33)?
  140. How to convert from IDE (UDMA-33) to T1Z (payload)?
  141. How to convert from T1C (signal) to IDE (UDMA-33)?
  142. How to convert from IDE (UDMA-33) to T1C (signal)?
  143. How to convert from T1C (payload) to IDE (UDMA-33)?
  144. How to convert from IDE (UDMA-33) to T1C (payload)?
  145. How to convert from T2 (signal) to IDE (UDMA-33)?
  146. How to convert from IDE (UDMA-33) to T2 (signal)?
  147. How to convert from T3 (signal) to IDE (UDMA-33)?
  148. How to convert from IDE (UDMA-33) to T3 (signal)?
  149. How to convert from T3 (payload) to IDE (UDMA-33)?
  150. How to convert from IDE (UDMA-33) to T3 (payload)?
  151. How to convert from T3Z (payload) to IDE (UDMA-33)?
  152. How to convert from IDE (UDMA-33) to T3Z (payload)?
  153. How to convert from T4 (signal) to IDE (UDMA-33)?
  154. How to convert from IDE (UDMA-33) to T4 (signal)?
  155. How to convert from E.P.T.A. 1 (signal) to IDE (UDMA-33)?
  156. How to convert from IDE (UDMA-33) to E.P.T.A. 1 (signal)?
  157. How to convert from E.P.T.A. 1 (payload) to IDE (UDMA-33)?
  158. How to convert from IDE (UDMA-33) to E.P.T.A. 1 (payload)?
  159. How to convert from E.P.T.A. 2 (signal) to IDE (UDMA-33)?
  160. How to convert from IDE (UDMA-33) to E.P.T.A. 2 (signal)?
  161. How to convert from E.P.T.A. 2 (payload) to IDE (UDMA-33)?
  162. How to convert from IDE (UDMA-33) to E.P.T.A. 2 (payload)?
  163. How to convert from E.P.T.A. 3 (signal) to IDE (UDMA-33)?
  164. How to convert from IDE (UDMA-33) to E.P.T.A. 3 (signal)?
  165. How to convert from E.P.T.A. 3 (payload) to IDE (UDMA-33)?
  166. How to convert from IDE (UDMA-33) to E.P.T.A. 3 (payload)?
  167. How to convert from H0 to IDE (UDMA-33)?
  168. How to convert from IDE (UDMA-33) to H0?
  169. How to convert from H11 to IDE (UDMA-33)?
  170. How to convert from IDE (UDMA-33) to H11?
  171. How to convert from H12 to IDE (UDMA-33)?
  172. How to convert from IDE (UDMA-33) to H12?
  173. How to convert from Virtual Tributary 1 (signal) to IDE (UDMA-33)?
  174. How to convert from IDE (UDMA-33) to Virtual Tributary 1 (signal)?
  175. How to convert from Virtual Tributary 1 (payload) to IDE (UDMA-33)?
  176. How to convert from IDE (UDMA-33) to Virtual Tributary 1 (payload)?
  177. How to convert from Virtual Tributary 2 (signal) to IDE (UDMA-33)?
  178. How to convert from IDE (UDMA-33) to Virtual Tributary 2 (signal)?
  179. How to convert from Virtual Tributary 2 (payload) to IDE (UDMA-33)?
  180. How to convert from IDE (UDMA-33) to Virtual Tributary 2 (payload)?
  181. How to convert from Virtual Tributary 6 (signal) to IDE (UDMA-33)?
  182. How to convert from IDE (UDMA-33) to Virtual Tributary 6 (signal)?
  183. How to convert from Virtual Tributary 6 (payload) to IDE (UDMA-33)?
  184. How to convert from IDE (UDMA-33) to Virtual Tributary 6 (payload)?
  185. How to convert from STS1 (signal) to IDE (UDMA-33)?
  186. How to convert from IDE (UDMA-33) to STS1 (signal)?
  187. How to convert from STS1 (payload) to IDE (UDMA-33)?
  188. How to convert from IDE (UDMA-33) to STS1 (payload)?
  189. How to convert from STS3 (signal) to IDE (UDMA-33)?
  190. How to convert from IDE (UDMA-33) to STS3 (signal)?
  191. How to convert from STS3 (payload) to IDE (UDMA-33)?
  192. How to convert from IDE (UDMA-33) to STS3 (payload)?
  193. How to convert from STS3c (signal) to IDE (UDMA-33)?
  194. How to convert from IDE (UDMA-33) to STS3c (signal)?
  195. How to convert from STS3c (payload) to IDE (UDMA-33)?
  196. How to convert from IDE (UDMA-33) to STS3c (payload)?
  197. How to convert from STS12 (signal) to IDE (UDMA-33)?
  198. How to convert from IDE (UDMA-33) to STS12 (signal)?
  199. How to convert from STS24 (signal) to IDE (UDMA-33)?
  200. How to convert from IDE (UDMA-33) to STS24 (signal)?
  201. How to convert from STS48 (signal) to IDE (UDMA-33)?
  202. How to convert from IDE (UDMA-33) to STS48 (signal)?
  203. How to convert from STS192 (signal) to IDE (UDMA-33)?
  204. How to convert from IDE (UDMA-33) to STS192 (signal)?
  205. How to convert from STM-1 (signal) to IDE (UDMA-33)?
  206. How to convert from IDE (UDMA-33) to STM-1 (signal)?
  207. How to convert from STM-4 (signal) to IDE (UDMA-33)?
  208. How to convert from IDE (UDMA-33) to STM-4 (signal)?
  209. How to convert from STM-16 (signal) to IDE (UDMA-33)?
  210. How to convert from IDE (UDMA-33) to STM-16 (signal)?
  211. How to convert from STM-64 (signal) to IDE (UDMA-33)?
  212. How to convert from IDE (UDMA-33) to STM-64 (signal)?

What Is This Tool?

This converter helps transform values between IDE (UDMA-33) and IDE (PIO mode 4) data transfer modes. It assists users in comparing legacy PATA interfaces, aiding benchmarking, troubleshooting, and configuring older PC hardware and storage devices.

How to Use This Tool?

  • Enter the value in IDE (UDMA-33) transfer rate that you want to convert.
  • Select IDE (UDMA-33) as the input unit and IDE (PIO mode 4) as the output unit.
  • Apply the conversion to get the equivalent IDE (PIO mode 4) rate based on the formula provided.
  • Use the output to compare or configure legacy PATA device performance.

Key Features

  • Converts values between IDE (UDMA-33) and IDE (PIO mode 4) transfer modes based on theoretical maximum burst rates.
  • Supports benchmarking and troubleshooting of legacy PATA hard drives and optical drives.
  • Provides conversion formula using an established conversion rate.
  • Useful for vintage PC maintenance, retro-computing, and industrial hardware relying on ATA standards.

Examples

  • 1 IDE (UDMA-33) converts to approximately 1.9879518072 IDE (PIO mode 4).
  • 5 IDE (UDMA-33) converts to approximately 9.939759036 IDE (PIO mode 4).

Common Use Cases

  • Benchmarking legacy PATA hard drives and optical drives.
  • Configuring or troubleshooting BIOS and controller transfer modes on older PCs.
  • Comparing performance when upgrading or replacing legacy drives.
  • Researching computing history or maintaining vintage computer hardware.
  • Ensuring compatibility in industrial or retro-computing systems using ATA timing modes.

Tips & Best Practices

  • Understand that this conversion is theoretical and based on maximum burst rates, not actual throughput.
  • Use this tool primarily for performance comparison or configuration rather than precise measurement.
  • Consider hardware and cable quality since they affect real-world transfer speeds.
  • Be aware of the CPU impact when working with IDE (PIO mode 4) as it is more CPU intensive.
  • Utilize the conversion results to aid in troubleshooting BIOS and controller settings on older systems.

Limitations

  • The conversion reflects theoretical maximum burst rates, not actual transfer speeds experienced in practice.
  • IDE (PIO mode 4) is slower and places higher CPU demands compared to IDE (UDMA-33).
  • Differences in hardware, cabling, and system overhead mean conversions may not indicate exact performance equivalence.

Frequently Asked Questions

What is IDE (UDMA-33)?
IDE (UDMA-33), also called ATA/33 or Ultra DMA mode 4, is a Parallel ATA data transfer mode that uses direct memory access with a maximum burst rate of about 33.3 MB/s, commonly found in older hard drives and optical drives.

How does IDE (PIO mode 4) differ from IDE (UDMA-33)?
IDE (PIO mode 4) is a CPU-driven transfer mode with a maximum throughput around 16.7 MB/s, relying on CPU control rather than DMA, making it slower and more CPU intensive than IDE (UDMA-33).

Why convert IDE (UDMA-33) values to IDE (PIO mode 4)?
Converting helps users compare different legacy ATA transfer modes, troubleshoot BIOS and controller settings, and assess performance in vintage computing and retro systems.

Key Terminology

IDE (UDMA-33)
A Parallel ATA transfer mode using direct memory access with a maximum theoretical burst rate of 33.3 MB/s, used in older hard drives and optical drives.
IDE (PIO mode 4)
An ATA transfer mode controlled directly by the CPU, with a maximum theoretical throughput of about 16.7 MB/s, characterized by specific timing and handshaking.
Direct Memory Access (DMA)
A data transfer method where the device transfers data directly to memory without CPU intervention.

Quick Knowledge Check

What is the primary difference between IDE (UDMA-33) and IDE (PIO mode 4)?
Why might someone convert from IDE (UDMA-33) to IDE (PIO mode 4)?
What limitation should be considered when using this converter?

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