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The Asus X99-E-10G WS is an update to one of the top-end motherboards for Intel's fifth generation of Core i7 processors. This is the first chipset (X99) and line of CPUs to use DDR4 memory, and this specific motherboard is configured to allow a host of PCI-Express cards to be used with it. Normally the number of such cards that can be installed is limited by the PCI-Express lanes provided from the CPU - either 28 or 40 on this platform, depending on the CPU model that is installed. However, the X99-E-10G WS uses a pair of PLX chips on the motherboard to expand the usable number of PCI-Express lanes dramatically. A full four PCI-Express x16 cards can be used at full speed, or up to seven with one at x16 speed and the other six at x8.

In addition to the massive number of PCI-Express slots, the X99-E-10G WS also features a rarity on motherboards of this era: dual 10Gb Ethernet ports. These are great for high-speed network setups, which are becoming more common in areas where high-end workstations are used. These network ports are backward compatible with 1Gb and older networking standards as well.

A lot of other connectivity is included too. Four USB 3.0 and two USB 3.1 ports are present on the back panel, along with full analog and digital audio connections. Internally, 10 SATA 6Gbps ports are available for drives along with both M.2 and U.2 - both of which are new, high speed drive connections for solid-state drives.
William George (Puget Labs)
William George (Puget Labs) Says:
Holy PCI-Express lanes, Batman! The X99-E-10G WS is a great solution if you need to stack a single-CPU system full of expansion cards. If you want more CPU performance at the same time, the Asus Z10PE-D8 WS also has quite a few PCI-Express slots. In either case, you may want to talk with one of our sales consultants to make sure you have enough power and cooling to run everything that you have planned.

Note: Puget Systems is actively qualifying the X299 platform, but we are committed to only bringing a product to market that is mature and reliable. If you are interested in X299, save a configuration here, with notes in the comment field at the bottom of this page expressing your interest in X299.

Model: Asus X99-E-10G WS

Socket  2011-3
CPU Compatibility  Intel Socket 2011-v3 Core i7/Core i7 X-Series Processors
Form Factor  Other
Chipset Manufacturer  Intel
Chipset  X99
Front Side Bus  QuickPath Interconnect
Network Connectivity  Dual 10G Networking
Network Controller  Intel X550-AT2 10
Audio Controller  Realtek ALC1150 8-Channel High Definition Audio CODEC
Cooling System  Heatsink
Color  Black
Memory Support
Type  DDR4 ECC Registered
Maximum Speed  2133 MHz
Number of Slots  8
Maximum Size per Slot  64 GB
Maximum Amount Supported  512 GB
External Connections
USB 3.0  4
USB 3.1  1
USB 3.1 Type C  1
Audio Out  Surround Sound (7.1)
Audio In  Line-In/Microphone
S/PDIF  Optical
LAN (RJ45)  2
Internal Connections
USB 2.0  2 (providing 4 ports)
USB 3.0  2 (providing 4 ports)
SATA III 6.0Gbps  10
M.2 Connector  1
M.2 Support  M.2 Socket 3 for M Key, type 2260/2280 devices (PCIE only)
U.2 Connector  1
Serial (Com)  1
TPM  1
TPM Version  20-1
SATA Controllers
SATA III 6.0Gbps Controller 1  6 port - Intel X99
SATA III 6.0Gbps Controller 2  4 port - Intel X99
Expansion Slots
Slot 1  PCI Express 3.0 x16
Slot 2  PCI Express 3.0 x8 in a x16 size
Slot 3  PCI Express 3.0 x16
Slot 4  PCI Express 3.0 x8 in a x16 size
Slot 5  PCI Express 3.0 x16
Slot 6  PCI Express 3.0 x8 in a x16 size
Slot 7  PCI Express 3.0 x16
Additional Information
SLI Compatible  Yes
Crossfire Compatible  Yes
RAID Support  0, 1, 5, 10
BIOS Features
EZ Flash  Yes
OC Profiles  Yes
Height  305 mm (12.0 in)
Width  267 mm (10.5 in)

-M.2 is PCI-E 3.0 x4
-7 x PCIe 3.0/2.0 x16 (single x16 or dual x16/x16 or triple x16/x16/x16 or quad x16/x16/x16/x16 or seven x16/x8/x8/x8/x8/x8/x8)
-Motherboard is slightly wider than standard ATX motherboards
-Either M.2 or U.2 connector can be used (not both) - using one disables the other.
-Using a 28-lane CPU disables both the M.2 and U.2 connectors.

Configure a scientific workstation with the ASUS X99-E-10G WS.