# ISB-W890

CEB Form Factor Server Board with Intel® Xeon® 600 Processors for Workstations, DDR5-6400, and Flexible PCIe 5.0 Expansion

# Features

• Standard CEB form factor 12” x 10.5” (305 x 267mm): Easy integration, space-efficient design
• Support Intel® Xeon® 600 Processors for Workstations
• 4x Channel DDR5, 8 slots DDR5 RDIMM, DDR5 6400 MT/s per channel
• High flexibility of PCIe configurations: 7x PCIe slots, including 3x PCIe x16 slots
• 2x Slim SAS slots, 2x M.2 NVMe & 8x SATAIII slots

/XE
![Green computer motherboard with blue and black CPU socket, no visible text or symbols](.datasheet-isb-w890-20260212/d92af6bda2bc1681173bb875127af603a112cbc3e2decd7c50801231de093fc6.jpg)

Specifications

<table><tr><td>Form Factor</td><td colspan="2">CEB</td></tr><tr><td>Dimensions</td><td colspan="2">12&quot; x 10.5&quot; (305 x 267mm)</td></tr><tr><td>Processor System</td><td>CPU</td><td>1x Intel® Xeon® 600 Processors for Workstations, with over clocking and VROC support*1</td></tr><tr><td rowspan="2">System Memory</td><td>Supported Type</td><td>4 Channel DDR5, 8 slots DDR5 RDIMM ECCMemory speed: Up to 6400MT/S (1DPC), 5200 MT/S (2DPC)</td></tr><tr><td>Max. Capacity</td><td>1TB, 128GBx 8 slot</td></tr><tr><td rowspan="2">PCIe Expansion Slots (Slot 7 nearest to CPU)</td><td>PCIe</td><td>Expert stream (128L):2x PCIe 5.0 x16, 1x PCIe 4.0 x161x PCIe 5.0 x8, 1x PCIe 4.0 x81x PCIe 5.0 x4, 1x PCIe 4.0 x4Mainstream (80L):2x PCIe 5.0 x161x PCIe 5.0 x8, 1x PCIe 4.0 x81x PCIe 5.0 x4, 1x PCIe 4.0 x4</td></tr><tr><td>MCIO</td><td>4x MCIO x8 connectors*2</td></tr><tr><td rowspan="3">Storage</td><td>M.2</td><td>2x M.2 (M-Key) NVMe (2280/22110/25110)</td></tr><tr><td>SlimSAS</td><td>2x SlimSAS slots from Intel W890</td></tr><tr><td>SATA</td><td>8x SATA III slots, SATA RAID 0/1/5/10 supported by PCH</td></tr></table>

\*1 Over clocking supported depend on Intel’s CPU SKU/ Carriers for Intel® Xeon® W Processors are not included
\*2 When CPU is go for mainstream CPU, MCIO-1 (2x MCIO x8 connectors) is enabled only.

Specifications

<table><tr><td rowspan="9">I/O</td><td>GbE</td><td>1x 1G (I210), 1x 2.5G (I226). Support Wake on Lan(WOL) and PXE bootIPMI Management LAN shared with I210</td></tr><tr><td>USB</td><td>10 USB 3.0 ports5x Type A USB 3.2 Gen2 10Gbps in rear IO1x Type C USB 3.2 Gen2 10Gps in rear IO4x USB 3.2 Gen1 5Gps through internal pin header2x USB 2.0 ports pin header</td></tr><tr><td>Serial Port</td><td>5x COM, including 1x DB-9 COM connector with RS-232/422/485 x1in rear I/O+4x RS-232 internal pin header</td></tr><tr><td>Display Port</td><td>1x D-Sub 15-pin VGA port in rear IO from AST26001x DP port in rear IO from AST2600</td></tr><tr><td>Internal IO pinheader</td><td>1x TPM pin header with SPI interface1x VROC connector7x 4-pin Fan pin header(1 for CPU, 6 for system)2x Chassis intrusion pin header1x IPMC pin header(1x PMBus, 1xSMBus, 1x IPMB)1x 24 pin ATX main PWR connector +2x8 pin ATX 12V PWR connector+ 2x8 pin in 12VPWR connector for PCIe1x DIO pin header (4x DI, 4x DO)1x backplane PCIe hotplug connector (Reserved)2x SGPIO pin header (Reserved)4x COM port pin header,1x RS-232/422/485, 3x RS2324x USB 3.2 Gen1 5Gps through internal pin header2x USB 2.0 ports pin header</td></tr><tr><td>Front I/O &amp; LED</td><td>3x button: Power button, Reset button, UID button,7x LED: Power on/OFF LED, SATA HDD LED, Thermal alarm LED, System fault LED,2x LAN (active), UID LED2x USB 2.0</td></tr><tr><td>Rear I/O connector</td><td>1x VGA, 1x DP, USB 3.2 Gen2x1 (Type A) x5, USB 3.2 Gen2 (Type c) x1, 2x RJ45,1x COM (RS-232/422/485x1), 3x Audio(Line in, out, mic)Clear CMOS reset hole</td></tr><tr><td>DIO</td><td>in x4, out x4 -&gt; Pin header</td></tr><tr><td>Power Requirement</td><td>12V/12V_8P/5V_SB/5V/3.3V</td></tr><tr><td rowspan="6">Server Management</td><td>BMC Controller</td><td>Aspeed AST2600, with IPMI v2.0 &amp; Redfish support</td></tr><tr><td>TPM</td><td>TPM with header (TPM 2.0 module: 59-37610-000E)</td></tr><tr><td>Watch dog</td><td>Programmable 1 to 255 sec. (time put reset from Super I/O chip)</td></tr><tr><td>Others</td><td>Wake up from USBATX PWR: 24 Pin + 2x 8 Pin 12V + 2x8 Pin 12V for PCIeOn board buzzer supportOn board RTC and co-design with 2-pin header2x Chassis intrusion design</td></tr><tr><td>OS</td><td>Windows® 11 LTSC (64 bit)Ubuntu 24.04 (64 bit)</td></tr><tr><td>Environmental</td><td>Operating: 0°C to +60°C (32°F to 140°F)Storage: -40°C to +70°C (-40°F to 158°F)Relative Humidity: 10% to 85% (long term), 5% to 90% (short term)</td></tr></table>

# Ordering Information

<table><tr><td>Part Number</td><td>Description</td></tr><tr><td>91-31903-000E</td><td>ISB-W890 Board</td></tr></table>

# Front View

![2.5Gb LAN\n1Gb LAN\nAudio\nDP\nCOM\nClear CMOS reset hole\nVGA\nUSB 3.2 Gen2\nUSB 3.2 Type C](.datasheet-isb-w890-20260212/316dd431e592267183c1d1cf5e7566655b97e9fff14bf8d689279368ec5d599d.jpg)

# Block Diagram

![**Processor & Memory Area**\n*   **Blocks:** Processor Intel CPU Socket-E2 LGA 4710 (Granite Rapids Expert + Mainstream Workstation, TDP 350W), DDR5 RDIMM 5200 MT/s (2DPC) 4 Channel 2DPC configuration Max System Capacity ~2TB, DDR5 RDIMM slot x2 (x4), PCIe x16 CEM-Slot4, PCIe x16 CEM-Slot1, PCIe Gen5 x16 (x2), PCIe x16 CEM-Slot7, PCIe x4 CEM-Slot6, PCIe x8 CEM-Slot5, PCIe x8 CEM-Slot3, PCIe x8 CEM-Slot2, M.2 _2280/22110/25110 (M. Key), M.2 _2280/22110 (M. Key), MCIO x8 74Px2 (MCIO x12), MCIO x8 74P x2, MCIO 3&4, TPM pin header, TPM Module INFINEON TPM 2.0 SLM 9670AQ2.0.\n*   **Connections:**\n    *   **DDR5** connects DDR5 RDIMM slot x2 to CHA, CHC, CHE, CHG.\n    *   **PCIe Gen5 x16** connects PCIe x16 CEM-Slot4 to PE5.\n    *   **PCIe Gen4 x16** connects PCIe x16 CEM-Slot1 to PE8.\n    *   **PCIe Gen5 x16** connects PCIe Gen5 x16 to PE7.\n    *   **PCIe Gen5 x16** connects PCIe x16 CEM-Slot7 to PE4.\n    *   **PCIe Gen5 x4** connects PCIe x4 CEM-Slot6, PCIe x8 CEM-Slot3, M.2 _2280/22110/25110, M.2 _2280/22110 to PE0.\n    *   **PCIe Gen5 x8** connects PCIe x8 CEM-Slot5, PCIe x8 CEM-Slot2 to PE2.\n    *   **PCIe Gen5 x1** connects MCIO x8 74Px2 to PE3.\n    *   **SPI** connects TPM pin header to PE3.\n    *   **MCIO 3&4** connects to MCIO x8 74P x2.\n    *   **DMI Gen4 x8** connects Processor to W890.\n\n**Power Area**\n*   **Blocks:** CRPS Redundant PSUs Supports 12V DC input, IATX Connector 24P, ATX Connector 8P _x4, Power/PMBus.\n\n**Audio, Network, & USB Area**\n*   **Blocks:** Microphone Speaker 3.5mm Jack, Codec Realtek ALC897, Intel Ethernet Controller I226-V, TI TUSB1002AIRGER USB 3.2 Re-driver (x2), 2.5G Base T RJ45 + 2x1 Type-A USB3, Intel Ethernet Controller I210-AT, TI TUSB1002AIRGER USB 3.2 2P Re-driver, 1G Base T RJ45 + 2x1 Type-A USB3, USB Type-C 10G + USB 3 Type A, 8x 7pin SATA3 Header, VROC Header.\n*   **Connections:**\n    *   **Mic-in**, **Line-in**, **Line-out** connect Microphone Speaker 3.5mm Jack to Codec Realtek ALC897.\n    *   **HDA** connects Codec Realtek ALC897 to W890.\n    *   **MDI** connects Intel Ethernet Controller I226-V to Microphone Speaker 3.5mm Jack.\n    *   **PCIe Gen3 x1** connects Intel Ethernet Controller I226-V to W890.\n    *   **2x USB3.2**, **2x USB2.0** connect 2.5G Base T RJ45 + 2x1 Type-A USB3 to TI TUSB1002AIRGER USB 3.2 Re-driver.\n    *   **USB2.0/1.1**, **USB3.2 Gen2** connect TI TUSB1002AIRGER USB 3.2 Re-driver to W890 (U3#2).\n    *   **MDI** connects Intel Ethernet Controller I210-AT to 2.5G Base T RJ45 + 2x1 Type-A USB3.\n    *   **PCIe Gen2 x1** connects Intel Ethernet Controller I210-AT to W890 (PCIe#7).\n    *   **NC-SI** connects Intel Ethernet Controller I210-AT to (To AST2600).\n    *   **2x USB3.2**, **2x USB2.0** connect 1G Base T RJ45 + 2x1 Type-A USB3 to TI TUSB1002AIRGER USB 3.2 2P Re-driver.\n    *   **USB2.0/1.1**, **USB3.2 Gen2** connect TI TUSB1002AIRGER USB 3.2 2P Re-driver to W890 (U3#5).\n    *   **USB3.2 Gen2**, **USB2.0/1.1** connect USB Type-C 10G + USB 3 Type A to top TI TUSB1002AIRGER USB 3.2 Re-driver.\n    *   **USB3.2 Gen2**, **USB2.0/1.1** connect USB Type-C 10G + USB 3 Type A to bottom TI TUSB1002AIRGER USB 3.2 Re-driver.\n    *   Top TI TUSB1002AIRGER USB 3.2 Re-driver connects to W890 (U3#1).\n    *   Bottom TI TUSB1002AIRGER USB 3.2 Re-driver connects to W890 (U3#2).\n    *   **SATA#0~7** connects 8x 7pin SATA3 Header to W890.\n    *   **GPP F23** connects VROC Header to W890.\n\n**Right Side (IPMC, Fans, & Serial)**\n*   **Blocks:** W890, SPI Switch, BIOS Flash 64MB, Server IPMC ASPEED AST2600, SlimSAS 1, SlimSAS 2, USB3.2 x4 Header, USB2.0 x2 Header, Nuvoton NCT6126D, FAN driver x5 NCT3948S (24W), RS232 Transceiver ADM213EARSZ, RS485 Transceiver x2 EXAR SP339, 2x1 D-SUB connector, DP connector, COMx4, COMx1, 48V Fan x2, System Fan x4, CPU Fan, COM x5 Header, IPMC Header, UID/Reset/Power button Front panel, Reserved For CPU Fan, To I210-IT.\n*   **Connections:**\n    *   **PCIe#9~12** connects W890 to PCIe Gen4 x4 -) SlimSAS 1.\n    *   **PCIe#21~24** connects W890 to PCIe Gen4 x4 -) SlimSAS 2.\n    *   **U3#7~10** connects W890 to USB2.0/1.1 -) USB3.2 x4 -) USB3.2 x4 Header -) USB2.0 x2 Header -) USB2.0 x2.\n    *   **U2#11~12** connects W890 to USB3.2 Gen1 -) USB2.0 x2.\n    *   **U3#11~12** connects W890 to eSPI -) SPI -) SPI Switch.\n    *   **SPI Switch** connects to BIOS Flash 64MB and Server IPMC ASPEED AST2600.\n    *   **Server IPMC ASPEED AST2600** connects to NC-SI -) To I210-IT.\n    *   **Server IPMC ASPEED AST2600** connects to DISPLAY PORT -) DP connector.\n    *   **Server IPMC ASPEED AST2600** connects to VGA.\n    *   **Server IPMC ASPEED AST2600** connects to DBG UART -) IPMC Header.\n    *   **Server IPMC ASPEED AST2600** connects to GPIs -) UID/Reset/Power button Front panel.\n    *   **Server IPMC ASPEED AST2600** connects to PWM/TACH -) FAN driver x5 NCT3948S (24W).\n    *   **FAN driver x5 NCT3948S (24W)** connects to 48V Fan x2, System Fan x4, CPU Fan, COM x5 Header.\n    *   **Nuvoton NCT6126D** connects to SPI Switch via SPI.\n    *   **Nuvoton NCT6126D** connects to Reserved For CPU Fan via CS#0, CS#1, I2C.\n    *   **Nuvoton NCT6126D** connects to UARTx1 -) RS232 Transceiver ADM213EARSZ -) COMx4.\n    *   **Nuvoton NCT6126D** connects to UARTx3 -) RS485 Transceiver x2 EXAR SP339 -) COMx1.\n    *   **Nuvoton NCT6126D** connects to UARTx2 -) 2x1 D-SUB connector.](.datasheet-isb-w890-20260212/661767b3cab6e768e63dcd1f361f3d7a3257ced77e2f17fb3388fb4870efcda3.jpg)

Layout
![Labeled diagram of a computer motherboard with numbered components and CPU socket, showing internal hardware layout and component numbers.](.datasheet-isb-w890-20260212/76a81cfa4f3dbaf319980613814bf414b43cede5bb681446b3b5f4f5cfa1c012.jpg)

No. Description

<table><tr><td>1</td><td>Clear CMOS reset hole</td></tr><tr><td>2</td><td>System Fan</td></tr><tr><td>3</td><td>System Fan</td></tr><tr><td>4</td><td>DP connector</td></tr><tr><td>5</td><td>COM+VGA</td></tr><tr><td>6</td><td>2.5Gb LAN+USB 3.2 Gen 2</td></tr><tr><td>7</td><td>1Gb LAN + USB 3.2 Gen 2</td></tr><tr><td>8</td><td>USB3.2 Gen2 + Type C</td></tr><tr><td>9</td><td>Audio</td></tr><tr><td>10</td><td>System Fan</td></tr><tr><td>11</td><td>System Fan</td></tr><tr><td>12</td><td>PCIe x16</td></tr><tr><td>13</td><td>PCIe x8</td></tr><tr><td>14</td><td>PCIe x4 with x8 connector</td></tr><tr><td>15</td><td>PCIex16</td></tr><tr><td>16</td><td>PCIex8</td></tr><tr><td>17</td><td>PCIex4</td></tr><tr><td>18</td><td>PCIex16</td></tr><tr><td>19</td><td>XDP (for debug)</td></tr><tr><td>20</td><td>CPU fan</td></tr><tr><td>21</td><td>Case opn detection</td></tr><tr><td>22</td><td>CPU Power connector</td></tr><tr><td>23</td><td>DDR5 slot</td></tr></table>

No. Description

<table><tr><td>24</td><td>DDR5 slot</td></tr><tr><td>25</td><td>DDR5 slot</td></tr><tr><td>26</td><td>DDR5 slot</td></tr><tr><td>27</td><td>CRPS power board header</td></tr><tr><td>28</td><td>DIDO header</td></tr><tr><td>29</td><td>IPMB header</td></tr><tr><td>30</td><td>USB3.2 Gen1 header</td></tr><tr><td>31</td><td>USB3.2 Gen1 header</td></tr><tr><td>32</td><td>CPU</td></tr><tr><td>33</td><td>VROC</td></tr><tr><td>34</td><td>COM port</td></tr><tr><td>35</td><td>CMOS battery</td></tr><tr><td>36</td><td>PCH-W890</td></tr><tr><td>37</td><td>M.2 connector</td></tr><tr><td>38</td><td>80 port display</td></tr><tr><td>39</td><td>COM port</td></tr><tr><td>40</td><td>COM port</td></tr><tr><td>41</td><td>COM port</td></tr><tr><td>42</td><td>DDR5 slot</td></tr><tr><td>43</td><td>DDR5 slot</td></tr><tr><td>44</td><td>DDR5 slot</td></tr><tr><td>45</td><td>DDR5 slot</td></tr><tr><td>46</td><td>M.2 connector</td></tr></table>

No. Description

<table><tr><td>47</td><td>COM port</td></tr><tr><td>48</td><td>CPU Power connector</td></tr><tr><td>49</td><td>USB 2.0 header</td></tr><tr><td>50</td><td>SlimSAS</td></tr><tr><td>51</td><td>ESPI header</td></tr><tr><td>52</td><td>SMBus header</td></tr><tr><td>53</td><td>CPLD JTAG header</td></tr><tr><td>54</td><td>SGPIO header</td></tr><tr><td>55</td><td>MCIO connector</td></tr><tr><td>56</td><td>MCIO connector</td></tr><tr><td>57</td><td>MCIO connector</td></tr><tr><td>58</td><td>MCIO connector</td></tr><tr><td>59</td><td>ATX Power connector</td></tr><tr><td>60</td><td>System Fan</td></tr><tr><td>61</td><td>System Fan</td></tr><tr><td>62</td><td>SlimSAS</td></tr><tr><td>63</td><td>PCIe power connetcor</td></tr><tr><td>64</td><td>PCIe power connetcor</td></tr><tr><td>65</td><td>SATA III x2</td></tr><tr><td>66</td><td>SATA III x2</td></tr><tr><td>67</td><td>SATA III x2</td></tr><tr><td>68</td><td>SATA III x2</td></tr><tr><td>69</td><td>Front Panel header</td></tr></table>

CPU Selection Guide

<table><tr><td>Processor Number</td><td>Cores/ Threads</td><td>Intel® Smart Cache LLC</td><td>Base / Max Turbo Frequency</td><td>PCIe Lanes</td><td>Notes</td></tr><tr><td>Intel® Xeon® 698X</td><td>86 / 172</td><td>336</td><td>2.0 / 4.6</td><td>128</td><td>Extreme high-end for massive virtualization or complex, multi-model workloads</td></tr><tr><td>Intel® Xeon® 696X</td><td>64 / 128</td><td>336</td><td>2.4 / 4.6</td><td>128</td><td>High core density for data center-grade edge nodes</td></tr><tr><td>Intel® Xeon® 678X</td><td>48 / 96</td><td>192</td><td>2.4 / 4.7</td><td>128</td><td>High-performance AI inference &amp; heavy multitasking</td></tr><tr><td>Intel® Xeon® 656</td><td>20 / 40</td><td>72</td><td>2.9 / 4.6</td><td>128</td><td rowspan="2">Enough cores for automation</td></tr><tr><td>Intel® Xeon® 654</td><td>18 / 36</td><td>72</td><td>3.1 / 4.6</td><td>128</td></tr><tr><td>Intel® Xeon® 636</td><td>12 / 24</td><td>48</td><td>3.5 / 4.5</td><td>80</td><td rowspan="2">Suitable for budget Edge Servers needing minimal high-end GPUs</td></tr><tr><td>Intel® Xeon® 634</td><td>12 / 24</td><td>48</td><td>2.7 / 4.4</td><td>80</td></tr></table>
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