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Amazon 131040 Trainium4 - UALink Nitro-v6 Hyperscaler EFA Cluster Configuration
AWS-Trn4 EFA-WB
Amazon · Trainium4 · Nitro-v6
Rack type
UALink
Cluster / location
Trainium4 - UALink
Buyer profile
Hyperscaler
Networking type
EFA
Number of XPUs
131,040
NIC used
Nitro-v6
NICs / XPU
1
Scale-out BW / XPU
800G
XPU / server
144
Scale-up network
5 rows
Assigned blockDefault
Trainium4 - UALink
Scale-UpXPU: Trainium4 UALink5 linesshared by 1 SKU
Scale-Up Parts Summary
5
| Item | Qty/Cluster | Qty/Server | Attach/XPU |
|---|---|---|---|
| Astera Labs UALink 57.6T Switch | 58,240 | 64.00 | 0.44 |
| Paladin HD2 224Gb/s 144 DP (Male) | 247,520 | 272.00 | 1.89 |
| Paladin HD2 224Gb/s 144 DP (Female) | 247,520 | 272.00 | 1.89 |
| 112Gb/s SkewClear EXD Cable | 16,773,120 | 18,432.00 | 128.00 |
| Teton4 Backplane Chassis | 1,820 | 2.00 | 0.01 |
Backend network
5 rows
Assigned blockDefault
Trainium4 - UALink - Nitro - 3L - ETH - TH5 - AWS
BackendXPU: Trainium4 UALink5 linesshared by 1 SKU
Backend Parts Summary
5
| Item | Qty/Cluster | Qty/Server | Attach/XPU |
|---|---|---|---|
| Generic 800G AEC | 131,040 | 144.00 | 1.00 |
| Nitro-v7 800G NIC | 131,040 | 144.00 | 1.00 |
| Generic 800G DR8 | 524,160 | 576.00 | 4.00 |
| Generic 800G Single Mode | 262,080 | 288.00 | 2.00 |
| WhiteBox Tomahawk 5 51.2T | 10,238 | 11.25 | 0.08 |
Frontend network
Frontend Parts Summary
0
| Item | Qty/Cluster | Qty/Server | Attach/XPU |
|---|
Compute Tray Networking Content
3 rows
Assigned blockDefault
Trainium4 - UALink - AWS
Compute TrayXPU: Trainium4 UALink3 linesshared by 1 SKU
Compute Tray Parts Summary
3
| Item | Qty/Cluster | Qty/Server | Attach/XPU |
|---|---|---|---|
| Astera Labs Scorpio-P 32-Lane PCIe Gen 6.0 | · | · | · |
| Aries PG6032 16L/32L Gearbox | · | · | · |
| Aries PCIe 7.0 x16 Retimer | · | · | · |
2026 share
Astera Labs UALink 57.6T SwitchΣ 100%
%
Paladin HD2 224Gb/s 144 DP (Male)Σ 100%
%
Paladin HD2 224Gb/s 144 DP (Female)Σ 100%
%
112Gb/s SkewClear EXD CableΣ 100%
%
Teton4 Backplane ChassisΣ 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: $542,185.60 | |||||||||||||||||||||
| $7,000.00 | 58,240 | 64.00 | 0.44 | $407,680,000.00 | $448,000.00 | 650 W | 37,856,000 W | 41,600 W | Scale-Up Switch | Amazon | Astera | — | Device Level | — | — | UALink | — | Trainium4 | Scale-Up | AWS-Trn4 EFA-WB | |
| $144.00 | 247,520 | 272.00 | 1.89 | $35,642,880.00 | $39,168.00 | 0 W | 0 W | 0 W | Backplane | Amazon | Amphenol | — | Device Level | — | 224G | — | — | Trainium4 | Scale-Up | AWS-Trn4 EFA-WB | |
| $72.00 | 247,520 | 272.00 | 1.89 | $17,821,440.00 | $19,584.00 | 0 W | 0 W | 0 W | Backplane | Amazon | Amphenol | — | Device Level | — | 224G | — | — | Trainium4 | Scale-Up | AWS-Trn4 EFA-WB | |
| $1.00 | 16,773,120 | 18,432.00 | 128.00 | $16,773,120.00 | $18,432.00 | 0 W | 0 W | 0 W | Backplane | Amazon | Amphenol | — | Device Level | — | 224G | — | — | Trainium4 | Scale-Up | AWS-Trn4 EFA-WB | |
| $8,500.80 | 1,820 | 2.00 | 0.01 | $15,471,456.00 | $17,001.60 | 0 W | 0 W | 0 W | Backplane | Amazon | Others | — | Device Level | — | — | — | — | Trainium4 | Scale-Up | AWS-Trn4 EFA-WB | |
Per-server cost: $613,215.00 | |||||||||||||||||||||
| $350.00 | 131,040 | 144.00 | 1.00 | $45,864,000.00 | $50,400.00 | 22 W | 2,935,296 W | 3,226 W | AEC | Amazon | Astera | — | Device Level | — | — | — | — | Trainium4 | Backend | AWS-Trn4 EFA-WB | |
| $900.00 | 131,040 | 4.00 | 1.00 | $117,936,000.00 | $3,600.00 | 75 W | 9,828,000 W | 300 W | NIC | Amazon | Amazon | — | Device Level | — | — | — | — | Trainium4 | Backend | AWS-Trn4 EFA-WB | |
| $500.00 | 524,160 | 576.00 | 4.00 | $262,080,000.00 | $288,000.00 | 16 W | 8,386,560 W | 9,216 W | Transceiver | Amazon | AAOI | — | Device Level | — | 112G | Ethernet | Fully Retimed | Trainium4 | Backend | AWS-Trn4 EFA-WB | |
| $180.00 | 262,080 | 288.00 | 2.00 | $47,174,400.00 | $51,840.00 | 0 W | 0 W | 0 W | Fiber | Amazon | Corning | — | Device Level | — | — | — | — | Trainium4 | Backend | AWS-Trn4 EFA-WB | |
| $19,500.00 | 10,238 | 11.25 | 0.08 | $199,631,250.00 | $219,375.00 | 1,200 W | 12,285,000 W | 13,500 W | Switch | Amazon | Accton | — | Device Level | — | — | — | — | Trainium4 | Backend | AWS-Trn4 EFA-WB | |
Per-server cost: $0.00 | |||||||||||||||||||||
| $70.00 | — | — | — | — | — | 80 W | — | — | Scale-Up Switch | Amazon | Astera | — | Device Level | — | — | PCIe | — | Trainium4 | Compute Tray | AWS-Trn4 EFA-WB | |
| $20.00 | — | — | — | — | — | 3 W | — | — | Gearbox | Amazon | Astera | — | L1 Abstraction | — | — | — | — | Trainium4 | Compute Tray | AWS-Trn4 EFA-WB | |
| $54.69 | — | — | — | — | — | 11 W | — | — | Retimer | Amazon | Astera | — | L1 Abstraction | — | — | — | — | Trainium4 | Compute Tray | AWS-Trn4 EFA-WB | |
| By fabric | |||||||||||||||||||||
| Total Scale-Up | $493,388,896.00 | $542,185.60 | 37,856,000 W | 41,600 W | |||||||||||||||||
| Total Backend | $672,685,650.00 | $613,215.00 | 33,434,856 W | 26,242 W | |||||||||||||||||
| Total Compute Tray | — | — | — | — | |||||||||||||||||
| Grand Total Cluster Networking | $1,166,074,546.00 | $1,155,400.60 | 71,290,856 W | 67,842 W | |||||||||||||||||
| By component | |||||||||||||||||||||
| Total Transceivers | $262,080,000.00 | $288,000.00 | 8,386,560 W | 9,216 W | |||||||||||||||||
| Total Switches | $199,631,250.00 | $219,375.00 | 12,285,000 W | 13,500 W | |||||||||||||||||
| Total Fiber | $47,174,400.00 | $51,840.00 | 0 W | 0 W | |||||||||||||||||
| Total Cables | — | — | — | — | |||||||||||||||||
| Total Connectors | — | — | — | — | |||||||||||||||||
| Total NICs | $117,936,000.00 | $3,600.00 | 9,828,000 W | 300 W | |||||||||||||||||