Hardware Reference
In-Depth Information
CFX12V supplies have included the 4-pin +12V connector since the standard first ap-
peared in November 2003, well after the +12V connector had been included in other
power supply form factors. TFX12V also included the 24-pin main power connector and
Serial ATA power connectors as mandatory since its inception. The current CFX12V 1.2
release dates from 2005 and has only minor revisions over previous versions, including a
change to HCS terminals in the connectors.
LFX12V
Intel originally introduced the LFX12V (low profile form factor) power supply in April
2004. It's designed for ultra-small BTX systems of about 6-9 liters in volume, primarily
using picoBTX or nanoBTX motherboards.
LFX12V power supplies are designed to deliver nominal power output capabilities of
180-260 watts, which is ideal for the tiny systems for which they are designed. LFX12V
supplies include an internal 60mm fan, which is 20mm smaller than that of the CFX12V
design.SimilartotheCFX12Vfan,itisusuallythermostaticallycontrolledtoensurequiet
operation while still providing adequate cooling. The shape of the supply includes a ledge
such that part of the supply can extend over the motherboard, reducing the overall size of
the system (see
Figure 18.12
)
. The dimensions of the LFX12V form factor are shown in
Figure 18.12
LFX12V power supply.
Figure 18.13
LFX12V power supply dimensions.
