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Microsoft 65536 H100 CX-7 Hyperscaler Infiniband Cluster Configuration
MSFT-H100-CX7-IB-DEF
Microsoft · H100 · CX-7
Rack type
NVL8
Cluster / location
Arizona H100s
Buyer profile
Hyperscaler
Networking type
Infiniband
Number of XPUs
65,536
NIC used
CX-7
NICs / XPU
1
Scale-out BW / XPU
400G
XPU / server
8
Scale-up network
1 rows
Assigned blockDefault
H100 - NVL8
Scale-UpXPU: H100 NVL81 lineshared by 17 SKUs
Scale-Up Parts Summary
1
| Item | Qty/Cluster | Qty/Server | Attach/XPU |
|---|---|---|---|
| Nvidia NVSwitch 3.0 (NVLink 4) | 32,768 | 4.00 | 0.50 |
Backend network
4 rows
Assigned blockDefault
H100 - NVL8 - CX7 - 3L - IB - QM9700 - MSFT
BackendXPU: H100 NVL84 linesshared by 1 SKU
Backend Parts Summary
4
| Item | Qty/Cluster | Qty/Server | Attach/XPU |
|---|---|---|---|
| Generic 800G DR8 | 229,376 | 28.00 | 3.50 |
| Generic 400G Single Mode | 196,608 | 24.00 | 3.00 |
| ConnectX-7 NIC - 400G | 65,536 | 8.00 | 1.00 |
| Quantum-2 InfiniBand (QM9700) | 5,120 | 0.63 | 0.08 |
Frontend network
11 rows
Assigned blockDefault
H100 - NVL8 - SN5600 - Generic
FrontendXPU: H100 NVL811 linesshared by 10 SKUs
Frontend Parts Summary
11
| Item | Qty/Cluster | Qty/Server | Attach/XPU |
|---|---|---|---|
| Spectrum-4 51.2T (SN5600) | 787 | 0 | 0.0120 |
| Spectrum-3 12.8T (SN4700) | 3 | 0 | 0.0001 |
| Spectrum-2 6.4T (SN3700) | 117 | 0 | 0.0018 |
| Spectrum-2 1GbE (SN2201) | 962 | 0 | 0.0147 |
| Nvidia LinkX 800G SR8 | 38,057 | 5 | 0.5807 |
| Nvidia LinkX 400G SR4 | 37,859 | 5 | 0.5777 |
| Nvidia LinkX 100G SR4 QSFP28 | 16,800 | 2 | 0.2563 |
| Nvidia LinkX 800G Multimode | 52,084 | 6 | 0.7947 |
| Nvidia LinkX 400G Multimode | 267 | 0 | 0.0041 |
| Nvidia LinkX 100G Multimode | 7,483 | 1 | 0.1142 |
| RJ45 Cables | 46,187 | 6 | 0.7048 |
Compute Tray Networking Content
1 rows
Assigned blockDefault
H100 - NVL8 - Generic
Compute TrayXPU: H100 NVL81 lineshared by 16 SKUs
Compute Tray Parts Summary
1
| Item | Qty/Cluster | Qty/Server | Attach/XPU |
|---|---|---|---|
| NVLink PCIe 5.0 x16 Retimer | 65,536 | 8.00 | 1.00 |
2026 share
Nvidia NVSwitch 3.0 (NVLink 4)Σ 100%
%
| Item | Unit Cost | Quantity | Quantity (per Server) | Quantity (per XPU) | Extended Price for Cluster | Extended Price per Server | Power (W) per Unit | Extended Power (W) per Cluster | Extended Power (W) per Server | Device Type | Hyperscaler | Vendor | Manufacturer | Component | Speed | SerDes Speed | Protocol | Technology | XPU | Network | Tab Name |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Per-server cost: $4,800.00 | |||||||||||||||||||||
| $1,200.00 | 32,768 | 4.00 | 0.50 | $39,321,600.00 | $4,800.00 | 407 W | 13,349,683 W | 1,630 W | Scale-Up Switch | Microsoft | Nvidia | — | Device Level | — | — | NVLink | — | H100 | Scale-Up | MSFT-H100-CX7-IB-DEF | |
Per-server cost: $41,020.00 | |||||||||||||||||||||
| $500.00 | 229,376 | 28.00 | 3.50 | $114,688,000.00 | $14,000.00 | 16 W | 3,670,016 W | 448 W | Transceiver | Microsoft | AAOI | — | Device Level | — | 112G | Ethernet | Fully Retimed | H100 | Backend | MSFT-H100-CX7-IB-DEF | |
| $130.00 | 196,608 | 24.00 | 3.00 | $25,559,040.00 | $3,120.00 | 0 W | 0 W | 0 W | Fiber | Microsoft | Amphenol | — | Device Level | — | — | — | — | H100 | Backend | MSFT-H100-CX7-IB-DEF | |
| $800.00 | 65,536 | 8.00 | 1.00 | $52,428,800.00 | $6,400.00 | 50 W | 3,276,800 W | 400 W | NIC | Microsoft | Nvidia | — | Device Level | — | — | — | — | H100 | Backend | MSFT-H100-CX7-IB-DEF | |
| $28,000.00 | 5,120 | 0.63 | 0.08 | $143,360,000.00 | $17,500.00 | 747 W | 3,824,640 W | 467 W | Switch | Microsoft | Nvidia | — | Device Level | — | — | — | — | H100 | Backend | MSFT-H100-CX7-IB-DEF | |
Per-server cost: $13,619.76 | |||||||||||||||||||||
| $23,000.00 | 787 | 0.10 | 0.01 | $18,093,917.45 | $2,208.73 | 950 W | 747,357 W | 91 W | Switch | Microsoft | Nvidia | — | Device Level | — | — | Ethernet | — | H100 | Frontend | MSFT-H100-CX7-IB-DEF | |
| $21,600.00 | 3 | 0.00 | 0.00 | $70,217.15 | $8.57 | 630 W | 2,048 W | 0 W | Switch | Microsoft | Nvidia | — | Device Level | — | — | Ethernet | — | H100 | Frontend | MSFT-H100-CX7-IB-DEF | |
| $13,273.51 | 117 | 0.01 | 0.00 | $1,553,379.49 | $189.62 | 250 W | 29,257 W | 4 W | Switch | Microsoft | Nvidia | — | Device Level | — | — | Ethernet | — | H100 | Frontend | MSFT-H100-CX7-IB-DEF | |
| $2,400.00 | 962 | 0.12 | 0.01 | $2,309,363.81 | $281.90 | 150 W | 144,335 W | 18 W | Switch | Microsoft | Nvidia | — | Device Level | — | — | Ethernet | — | H100 | Frontend | MSFT-H100-CX7-IB-DEF | |
| $930.23 | 38,057 | 4.65 | 0.58 | $35,401,898.85 | $4,321.52 | 14 W | 532,799 W | 65 W | Transceiver | Microsoft | Nvidia | Coherent, Eoptolink, Innolight, Mellanox | White Label | — | 112G | InfiniBand | Fully Retimed | H100 | Frontend | MSFT-H100-CX7-IB-DEF | |
| $575.00 | 37,859 | 4.62 | 0.58 | $21,768,777.14 | $2,657.32 | 9 W | 340,729 W | 42 W | Transceiver | Microsoft | Nvidia | Coherent, Innolight, Mellanox | White Label | — | 112G | InfiniBand | Fully Retimed | H100 | Frontend | MSFT-H100-CX7-IB-DEF | |
| $123.74 | 16,800 | 2.05 | 0.26 | $2,078,906.51 | $253.77 | 3 W | 50,400 W | 6 W | Transceiver | Microsoft | Nvidia | Mellanox, Others | White Label | — | 28G | InfiniBand | Fully Retimed | H100 | Frontend | MSFT-H100-CX7-IB-DEF | |
| $525.00 | 52,084 | 6.36 | 0.79 | $27,344,213.33 | $3,337.92 | 0 W | 0 W | 0 W | Fiber | Microsoft | Others | — | White Label | — | — | — | — | H100 | Frontend | MSFT-H100-CX7-IB-DEF | |
| $375.00 | 267 | 0.03 | 0.00 | $99,961.90 | $12.20 | 0 W | 0 W | 0 W | Fiber | Microsoft | Others | — | White Label | — | — | — | — | H100 | Frontend | MSFT-H100-CX7-IB-DEF | |
| $375.00 | 7,483 | 0.91 | 0.11 | $2,806,247.62 | $342.56 | 0 W | 0 W | 0 W | Fiber | Microsoft | Others | — | White Label | — | — | — | — | H100 | Frontend | MSFT-H100-CX7-IB-DEF | |
| $1.00 | 46,187 | 5.64 | 0.70 | $46,187.28 | $5.64 | 0 W | 0 W | 0 W | Cable | Microsoft | Amphenol | — | Device Level | — | — | — | — | H100 | Frontend | MSFT-H100-CX7-IB-DEF | |
Per-server cost: $466.67 | |||||||||||||||||||||
| $58.33 | 65,536 | 8.00 | 1.00 | $3,822,933.31 | $466.67 | 9 W | 589,824 W | 72 W | Retimer | Microsoft | Astera | Astera | L1 Abstraction | — | — | — | — | H100 | Compute Tray | MSFT-H100-CX7-IB-DEF | |
| By fabric | |||||||||||||||||||||
| Total Scale-Up | $39,321,600.00 | $4,800.00 | 13,349,683 W | 1,630 W | |||||||||||||||||
| Total Backend | $336,035,840.00 | $41,020.00 | 10,771,456 W | 1,315 W | |||||||||||||||||
| Total Frontend | $111,573,070.54 | $13,619.76 | 1,846,925 W | 225 W | |||||||||||||||||
| Total Compute Tray | $3,822,933.31 | $466.67 | 589,824 W | 72 W | |||||||||||||||||
| Grand Total Cluster Networking | $490,753,443.85 | $59,906.43 | 26,557,889 W | 3,242 W | |||||||||||||||||
| By component | |||||||||||||||||||||
| Total Transceivers | $173,937,582.51 | $21,232.62 | 4,593,944 W | 561 W | |||||||||||||||||
| Total Switches | $165,386,877.90 | $20,188.83 | 4,747,638 W | 580 W | |||||||||||||||||
| Total Fiber | $55,809,462.86 | $6,812.68 | 0 W | 0 W | |||||||||||||||||
| Total Cables | $46,187.28 | $5.64 | 0 W | 0 W | |||||||||||||||||
| Total Connectors | — | — | — | — | |||||||||||||||||
| Total NICs | $52,428,800.00 | $6,400.00 | 3,276,800 W | 400 W | |||||||||||||||||