One Stop Systems EB3200, User Manual

Page: 83 / 85

One Stop Systems
ExpressBox 3200 | 83
9.8 Power
All sizes of x4 and x8 PCIe cards are allowed to a maximum power consumption of 25 Watt. All x1 cards consumed 10 Watts. A full -height
cards is considered as “high-power” and consume 25 Watts. All x16 card are initially 25 Watts but may increase their power after configuration
and can use up to o75 Watt (3.3v x 3A + 12 v x 5.5a). Per PCIe specification, it demands that the higher-power configuration be used for
graphics cards only, while card of other purposes are to remain a 25 Watts.
PCIe cards requiring more than 75 Watts have added power connectors.
To accommodate graphics cards needing more than 75 watts, the PCI-SIG (Special Interest Group) introduced two standards for supplying
additional power to a video card via additional graphics power connectors:

PCI Express x16 Graphics 150 W-ATX Specification —Published in October 2004, this standard defines a six-pin (2x3) auxiliary power
connector capable of delivering an additional 75 W to a graphics card directly from the power supply, for a total of 150 W to the
card.

PCI Express 225 W/300 W High Power Card Electromechanical Specification —Published in March 2008, this standard defines an
eight-pin (2x4) auxiliary power connector capable of supplying an additional 150 W of power, for a total of either 225 watts (75+150)
or 300 watts (75+150+75) of available power.
Cards requiring even more power can use multiple connectors.
Graphics Card Auxiliary Power Connector Configurations
Maximum Power Draw Auxiliary Power Connector Configuration
75 Watts None
150 Watts One six-pin connector
225 Watts Two six-pin connectors*
300 Watts One eight-pin con one six-pin connector
375 Watts Two eight-pin connectors
450 Watts Two eight-pin conn one six-pin connector