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Microsoft 6400 A100 CX-6 Hyperscaler Ethernet Cluster Configuration
MSFT-A100-CX6-IB-25K
Microsoft · A100 · CX-6
Rack type
NVL8
Cluster / location
Ballard 25k Cluster
Buyer profile
Hyperscaler
Networking type
Ethernet
Number of XPUs
6,400
NIC used
CX-6
NICs / XPU
1
Scale-out BW / XPU
200G
XPU / server
8
Scale-up network
1 rows
Assigned blockDefault
A100 - NVL8
Scale-UpXPU: A100 NVL81 lineshared by 9 SKUs
Scale-Up Parts Summary
1
| Item | Qty/Cluster | Qty/Server | Attach/XPU |
|---|---|---|---|
| Nvidia NVSwitch 2.0 (NVLink 3) | 4,800 | 6.00 | 0.75 |
Backend network
4 rows
Assigned blockDefault
A100 - NVL8 - CX6 - 3L - IB - QM8700 - MSFT
BackendXPU: A100 NVL84 linesshared by 1 SKU
Backend Parts Summary
4
| Item | Qty/Cluster | Qty/Server | Attach/XPU |
|---|---|---|---|
| Generic 200G DR4 QSFP56 | 38,400 | 48.00 | 6.00 |
| Generic 200G Single Mode | 19,200 | 24.00 | 3.00 |
| ConnectX-6 NIC - 200G | 6,400 | 8.00 | 1.00 |
| Quantum InfiniBand HDR (QM8700) | 800 | 1.00 | 0.13 |
Frontend network
11 rows
Assigned blockDefault
A100 - NVL8 - SN5600 - Generic
FrontendXPU: A100 NVL811 linesshared by 8 SKUs
Frontend Parts Summary
11
| Item | Qty/Cluster | Qty/Server | Attach/XPU |
|---|---|---|---|
| Spectrum-4 51.2T (SN5600) | 19 | 0 | 0.0030 |
| Spectrum-3 12.8T (SN4700) | 0 | 0 | 0.0000 |
| Spectrum-2 6.4T (SN3700) | 3 | 0 | 0.0004 |
| Spectrum-2 1GbE (SN2201) | 23 | 0 | 0.0037 |
| Nvidia LinkX 800G SR8 | 929 | 1 | 0.1452 |
| Nvidia LinkX 400G SR4 | 924 | 1 | 0.1444 |
| Nvidia LinkX 100G SR4 QSFP28 | 410 | 1 | 0.0641 |
| Nvidia LinkX 800G Multimode | 1,272 | 2 | 0.1987 |
| Nvidia LinkX 400G Multimode | 7 | 0 | 0.0010 |
| Nvidia LinkX 100G Multimode | 183 | 0 | 0.0285 |
| RJ45 Cables | 1,128 | 1 | 0.1762 |
Compute Tray Networking Content
1 rows
Assigned blockDefault
A100 - NVL8 - Generic
Compute TrayXPU: A100 NVL81 lineshared by 8 SKUs
Compute Tray Parts Summary
1
| Item | Qty/Cluster | Qty/Server | Attach/XPU |
|---|---|---|---|
| NVLink PCIe 4.0 x16 Retimer | 6,400 | 8.00 | 1.00 |
2026 share
Nvidia NVSwitch 2.0 (NVLink 3)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: $4,000.00 | |||||||||||||||||||||
| $666.67 | 4,800 | 6.00 | 0.75 | $3,200,000.00 | $4,000.00 | 255 W | 1,225,660 W | 1,532 W | Scale-Up Switch | Microsoft | Nvidia | — | Device Level | — | — | NVLink | — | A100 | Scale-Up | MSFT-A100-CX6-IB-25K | |
Per-server cost: $29,413.46 | |||||||||||||||||||||
| $150.00 | 38,400 | 48.00 | 6.00 | $5,760,000.00 | $7,200.00 | 5 W | 192,000 W | 240 W | Transceiver | Microsoft | AAOI | — | Device Level | — | 56G | Ethernet | Fully Retimed | A100 | Backend | MSFT-A100-CX6-IB-25K | |
| $130.00 | 19,200 | 24.00 | 3.00 | $2,496,000.00 | $3,120.00 | 0 W | 0 W | 0 W | Fiber | Microsoft | Corning | — | Device Level | — | — | — | — | A100 | Backend | MSFT-A100-CX6-IB-25K | |
| $500.00 | 6,400 | 8.00 | 1.00 | $3,200,000.00 | $4,000.00 | 38 W | 240,000 W | 300 W | NIC | Microsoft | Nvidia | — | Device Level | — | — | — | — | A100 | Backend | MSFT-A100-CX6-IB-25K | |
| $15,093.46 | 800 | 1.00 | 0.13 | $12,074,767.08 | $15,093.46 | 418 W | 334,069 W | 418 W | Switch | Microsoft | Nvidia | — | Device Level | — | — | — | — | A100 | Backend | MSFT-A100-CX6-IB-25K | |
Per-server cost: $13,619.76 | |||||||||||||||||||||
| $23,000.00 | 77 | 0.10 | 0.01 | $1,766,984.13 | $2,208.73 | 950 W | 72,984 W | 91 W | Switch | Microsoft | Nvidia | — | Device Level | — | — | Ethernet | — | A100 | Frontend | MSFT-A100-CX6-IB-25K | |
| $21,600.00 | 0 | 0.00 | 0.00 | $6,857.14 | $8.57 | 630 W | 200 W | 0 W | Switch | Microsoft | Nvidia | — | Device Level | — | — | Ethernet | — | A100 | Frontend | MSFT-A100-CX6-IB-25K | |
| $13,273.51 | 11 | 0.01 | 0.00 | $151,697.21 | $189.62 | 250 W | 2,857 W | 4 W | Switch | Microsoft | Nvidia | — | Device Level | — | — | Ethernet | — | A100 | Frontend | MSFT-A100-CX6-IB-25K | |
| $2,400.00 | 94 | 0.12 | 0.01 | $225,523.81 | $281.90 | 150 W | 14,095 W | 18 W | Switch | Microsoft | Nvidia | — | Device Level | — | — | Ethernet | — | A100 | Frontend | MSFT-A100-CX6-IB-25K | |
| $930.23 | 3,717 | 4.65 | 0.58 | $3,457,216.69 | $4,321.52 | 14 W | 52,031 W | 65 W | Transceiver | Microsoft | Nvidia | Coherent, Eoptolink, Innolight, Mellanox | White Label | — | 112G | InfiniBand | Fully Retimed | A100 | Frontend | MSFT-A100-CX6-IB-25K | |
| $575.00 | 3,697 | 4.62 | 0.58 | $2,125,857.14 | $2,657.32 | 9 W | 33,274 W | 42 W | Transceiver | Microsoft | Nvidia | Coherent, Innolight, Mellanox | White Label | — | 112G | InfiniBand | Fully Retimed | A100 | Frontend | MSFT-A100-CX6-IB-25K | |
| $123.74 | 1,641 | 2.05 | 0.26 | $203,018.21 | $253.77 | 3 W | 4,922 W | 6 W | Transceiver | Microsoft | Nvidia | Mellanox, Others | White Label | — | 28G | InfiniBand | Fully Retimed | A100 | Frontend | MSFT-A100-CX6-IB-25K | |
| $525.00 | 5,086 | 6.36 | 0.79 | $2,670,333.33 | $3,337.92 | 0 W | 0 W | 0 W | Fiber | Microsoft | Others | — | White Label | — | — | — | — | A100 | Frontend | MSFT-A100-CX6-IB-25K | |
| $375.00 | 26 | 0.03 | 0.00 | $9,761.90 | $12.20 | 0 W | 0 W | 0 W | Fiber | Microsoft | Others | — | White Label | — | — | — | — | A100 | Frontend | MSFT-A100-CX6-IB-25K | |
| $375.00 | 731 | 0.91 | 0.11 | $274,047.62 | $342.56 | 0 W | 0 W | 0 W | Fiber | Microsoft | Others | — | White Label | — | — | — | — | A100 | Frontend | MSFT-A100-CX6-IB-25K | |
| $1.00 | 4,510 | 5.64 | 0.70 | $4,510.48 | $5.64 | 0 W | 0 W | 0 W | Cable | Microsoft | Amphenol | — | Device Level | — | — | — | — | A100 | Frontend | MSFT-A100-CX6-IB-25K | |
Per-server cost: $233.33 | |||||||||||||||||||||
| $29.17 | 6,400 | 8.00 | 1.00 | $186,666.67 | $233.33 | 6 W | 38,400 W | 48 W | Retimer | Microsoft | Astera | Astera | L1 Abstraction | — | — | — | — | A100 | Compute Tray | MSFT-A100-CX6-IB-25K | |
| By fabric | |||||||||||||||||||||
| Total Scale-Up | $3,200,000.00 | $4,000.00 | 1,225,660 W | 1,532 W | |||||||||||||||||
| Total Backend | $23,530,767.08 | $29,413.46 | 766,069 W | 958 W | |||||||||||||||||
| Total Frontend | $10,895,807.66 | $13,619.76 | 180,364 W | 225 W | |||||||||||||||||
| Total Compute Tray | $186,666.67 | $233.33 | 38,400 W | 48 W | |||||||||||||||||
| Grand Total Cluster Networking | $37,813,241.41 | $47,266.55 | 2,210,492 W | 2,763 W | |||||||||||||||||
| By component | |||||||||||||||||||||
| Total Transceivers | $11,546,092.04 | $14,432.62 | 282,227 W | 353 W | |||||||||||||||||
| Total Switches | $14,225,829.37 | $17,782.29 | 424,205 W | 530 W | |||||||||||||||||
| Total Fiber | $5,450,142.86 | $6,812.68 | 0 W | 0 W | |||||||||||||||||
| Total Cables | $4,510.48 | $5.64 | 0 W | 0 W | |||||||||||||||||
| Total Connectors | — | — | — | — | |||||||||||||||||
| Total NICs | $3,200,000.00 | $4,000.00 | 240,000 W | 300 W | |||||||||||||||||