DTX (form factor)

DTX (form factor)
Computer form factors
Name PCB size (mm)
WTX 356 × 425
AT 350 × 305
Baby-AT 330 × 216
BTX 325 × 266
ATX 305 × 244
EATX (Extended) 305 × 330
LPX 330 × 229
microBTX 264 × 267
NLX 254 × 228
Ultra ATX 244 × 367
microATX 244 × 244
DTX 244 × 203
FlexATX 229 × 191
Mini-DTX 203 × 170
EBX 203 × 146
microATX (min.) 171 × 171
Mini-ITX 170 × 170
EPIC (Express) 165 × 115
ESM 149 × 71
Nano-ITX 120 × 120
COM Express 125 × 95
ESMexpress 125 × 95
ETX/XTX 114 × 95
Pico-ITX 100 × 72
PC/104 (-Plus) 96 × 90
ESMini 95 × 55
Qseven 70 × 70
mobile-ITX 60 × 60
CoreExpress 58 × 65

The DTX form factor is a variation of ATX specification[1] designed especially for small form factor PCs (especially for HTPCs) with dimensions of 8.0 by 9.6 inches (converted to 203 mm by 244 mm.[2]) An industry standard intended to enable interchangeability for systems similar to Shuttle's original "SFF" designs[3], AMD announced its development on January 10, 2007. AMD stated that the DTX form factor is an open standard, and is backward compatible with ATX form factor cases. They also present a shorter variant named Mini-DTX which is smaller in PCB size of 203 mm by 170 mm (8.0 by 6.7 inches.)[2]

The specification provides for up to 2 expansion slots on a DTX motherboard, in the same position as the top two slots on an ATX or microATX board. Upcoming DTX boards will likely contain one PCI Express slot and one PCI slot. The spec also provides for optional ExpressCard expansion slots on DTX motherboards.

Benefits

There are several benefits DTX provides to reduce production costs.[4]

  • DTX will allow up to four motherboards – for low cost – per standard printed circuit board manufacturing panel sizes
  • Mini-DTX will allow up to six motherboards – for low cost – per standard printed circuit board manufacturing panel sizes
  • DTX motherboards can be manufactured in as few as four layers of printed circuit board wiring for motherboard cost savings
  • By leveraging backward-compatibility with ATX infrastructure, vendors may gain a low-cost DTX product offering with little development expense

References

  1. ^ ATX Specification is inch-based
  2. ^ a b DailyTech report
  3. ^ Early SFF Description
  4. ^ AMD Press Release

External links

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