One Stop Systems
OSS-PCIe4-4UV-5
72
The photo below is an example of a PCIe card that has an 8pin power connector. You need
one 8-pin aux cable to provide extra power.
Each PCIe x16 slot on the 522 OSS board provides 75 Watts of power which is adequate for most video cards. But a high-end GPU cards usually
need more power. 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
.
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
*May optionally use one eight-pin connector instead
GPU Card Power Connectors
Pin
PEX 6-pin
PCe 8-pin
1
12V
12V
2
12V
12V
3
12V
12V
4
GND
SENSE1
5
SENSE
GND
6
GND
SENSE0
7
--
GND
8
--
GND
Summary of Contents for OSS-PCIE-4UV-5-1
Page 5: ...One Stop Systems OSS PCIe4 4UV 5 5 ...
Page 16: ...One Stop Systems OSS PCIe4 4UV 5 16 ...
Page 70: ...One Stop Systems OSS PCIe4 4UV 5 70 6 2 pin aux power cable and pin outs ...
Page 83: ...One Stop Systems OSS PCIe4 4UV 5 83 14 Enclosure Dimensions ...
Page 84: ...One Stop Systems OSS PCIe4 4UV 5 84 15 Rackslide Mounting Position ...