| Model# | Z9PA-U8 | X9SRA | 6PXSV4 |
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| Brand | ASUS | SUPERMICRO | GIGABYTE |
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| CPU Socket Type | LGA 2011 | LGA 2011 | LGA 2011 |
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| CPU Type | Intel Xeon E5-2600/1600 series | Intel Xeon E5-2600/E5-1600 Series | Intel Xeon E5-1600/2600 families, Intel Core processor series |
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| Other Chipset | Intel C602-A PCH | Intel C602 Chipset | |
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| Number of DDR3 Slots | 8 x 240pin | 8 x 240pin | 8 x 240pin |
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| DDR3 Standard | DDR3 1600/1333/1066 | DDR3 1600 | DDR3 1600/1333/1066 |
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| Maximum Memory Supported | 256GB LRDIMM | 256GB | 256GB RDIMM |
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| PCI Express 3.0 x16 | Slot Location 4: PCI-E x16 (Gen3 X16 Link), Auto switch to x8 link if slot 3 is occupied
Slot Location 6: PCI-E x16 (Gen3 X16 Link), Auto switch to x8 link if slot 5 is occupied | 2x PCI-E 3.0 x16 slots | 1 x PCIe x16 (@Gen3 x16 bus) slot
2 x PCIe x16 (@Gen3 x8 bus) slots |
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| PCI Express x8 | Slot Location 1: PCI-E x8 (Gen2 X4 Link)
Slot Location 3: PCI-E x8 (Gen3 X8 Link)
Slot Location 5: PCI-E x8 (Gen3 X8 Link) | | |
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| PCI Slots | Slot Location 2: PCI 32bit/33MHz | 1x PCI-32 slot | 1 x PCI slot |
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| Other Slots | Slot Location 7: MIO Slot for Audio card
Additional Slot 1: PIKE Slot for Stroage expansion | | or (via PCIe switch):
2 x PCIe x16 (@Gen3 x16 bus) slots
1 x PCIe x1 (@Gen2 x1 bus) slot
1 x PCI
Supports NVIDIA SLI and AMD CrossFireX technologies (2-way, 3-way) |
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| SATA | 4 x SATA 3.0Gb/s + 2 x SATA 6.0Gb/s | 4 x SATA 3.0Gb/s + 2 x SATA 6.0Gb/s | 4 x SATA 3.0Gb/s + 2 x SATA 6.0Gb/s |
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| SATA RAID | Intel Rapid Storage Technology Enterprise(RSTe) (For Windows Only)
(Support Software RAID 0, 1, 5, 10 )
LSI MegaRAID (For Linux/Windows)
(Support Software RAID 0, 1, 10 ) | RAID 0/1/5/10 support (Windows)
RAID 0/1/10 support (Linux) | 0/1/10/5 |
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| Onboard Video Chipset | Aspeed AST2300 16M | | Aspeed AST2300 |
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| LAN Chipset | Intel 82574L | Intel 82579LM | 4 x Intel 82574L |
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| LAN Speed | 10/100/1000Mbps | 10/100/1000Mbps | |
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| Second LAN Chipset | Intel 82574L | Intel 82574L | |
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| Second LAN Speed | 10/100/1000Mbps | 10/100/1000Mbps | |
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| Max LAN Speed | Dual 10/100/1000Mbps | Dual 10/100/1000Mbps | Quad 10/100/1000Mbps |
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| PS/2 | 1 x PS/2 keyboard/mouse port | 1 x PS/2 keyboard/mouse port | 1 x PS/2 keyboard/mouse port |
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| COM | 1 | 2 headers | 1 |
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| Video Ports | D-Sub | | D-Sub |
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| USB 1.1/2.0 | 2 x USB 3.0 + 2 x USB 2.0 | 2 x USB 3.0 + 8 x USB 2.0 | 2 x USB 2.0 |
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| Onboard USB | 1 x USB connector
2 x USB pin header , Up to 4 Devices | USB 2.0: 6 via header
USB 3.0: 2 via header | 1 x USB 2.0 Type A connector
1 x USB 3.0 header
1 x USB 2.0 header |
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| Form Factor | ATX | ATX | ATX |
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| Dimensions (W x L) | 12.0" x 9.6" | 12.0" x 9.6" | 244W x 305H (mm) |
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| Features | Management: ASWM Enterprise | DOM power connector support | Management LAN port
IPMI 2.0, iKVM
PSU Connector:
1 x 24-pin ATX main power connector
1 x 8-pin ATX 12V power connector |
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| ECC Supported | | Yes | Yes |
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| Registered | | Yes | Yes |
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| PCI Express x4 | | 1x PCI-E 3.0 x4 (in x8) slot
1x PCI-E 2.0 x4 (in x8) slot | |
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| Additional SATA | | 4 x SATA 3Gb/s from SCU | |
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| Audio Chipset | | Realtek ALC889 | |
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| Audio Channels | | 7.1 High Definition Audio with S/PDIF header | |
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| Audio Ports | | Line-in / Line-out / Microphone Ports | |
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| North Bridge | | | Intel C604 |
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| Channel Supported | | | Quad Channel |
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| PCI Express x1 | | | 1 x PCIe x1 (@Gen2 x1 bus) slot |
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| SAS | | | 4 x SAS 3Gb/s ports |
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| USB 3.0 | | | 4 x USB 3.0 |
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