EVGA X299 DARK Owner's Manual page 18

EVGA X299 DARK (151-SX-E299)
installation guide on Page 34. Kaby Lake-X supports up to 32GB (2x16GB) up
to 4000MHz+. 32GB and larger RDIMM modules are *NOT* supported on
this platform. Kaby Lake-X only supports memory in DIMM slots 3 and 4.
Using 1 or 3 DIMMs may significantly lower performance depending on the
application; for best use, use either a 2 or 4 stick kit of RAM, subject to your
CPU's limitations noted above.
The speeds listed above cannot be guaranteed because Intel
speed of the memory controller up to 2666/2400MHz for Kaby Lake-X and
Skylake-X platforms, respectively, and all speeds above Intel
require overclocking, including XMP automatic operation.
6. 24-pin ATX power connector
The main power for the motherboard is located on the right side of the board
and parallel to the PCB; this is also described as a "90 degree / right-angle"
connector (See Page 48 for more specifics to the connector itself, and associated
wiring/pinouts). The 24-pin connector IS directional and the connector needs
the tab on the socket to line up with the release clip located on the 24-pin
connector from the power supply. This connector pulls the bulk of the power
for all components; other connectors, such as CPU +12V EPS, PCIe (video
card AND motherboard sides), have been added to reduce the load and increase
longevity due to wiring and trace limitations.
7. Dual 8-pin EPS Connector
The +12V EPS is dual dedicated power input for the CPU (See Page 49 for
more specifics to the connector itself, and associated wiring/pinouts). Carefully
choose the correct power cable by consulting with the installation manual for
your power supply. This connector is designed only to work with an EPS or
CPU cable. System builders may make the mistake of plugging in a PCIe 8-pin
or 6+2-pin connector, which will prevent the board from POSTing and
possibly short or damage the board. Although the cables appear similar, they
are wired differently and attaching a PCIe cable to an EPS connector may cause
damage to the motherboard.
Alternatively, if no power cable is connected or detected, the system will not
POST and will hang at POST code "C."
For optimal performance with Intel
BOTH connectors must be plugged in with CPU power cables.
Core X-series i9 Skylake-X processors,
® ™
only certifies the
®
's certified speeds
®
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