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MCS · Rigs · Compare

Side-by-side, with the numbers that matter.

Two rigs, one table. Higher numbers win in cobalt; TDP and price flip.

0 of 36 fields comparable

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SpecEl CapitanNVIDIA DGX Spark
AcceleratorAMD Instinct MI300A (APU)—
Cores11,340,000—
CPUAMD 4th Gen EPYC 24C 1.8GHz—
CPU Breakdown—10x Arm Cortex-X925 + 10x Arm Cortex-A725
CPU Cores Total—20
Dimensions MM—150 x 150 x 50.5
Ethernet—1x 10 GbE RJ-45
FP4 Pflops Sparse—1
Gb10 TDP Watts—140
GPU Arch—Blackwell, 5th-gen Tensor Cores, 4th-gen RT Cores
Hpcg Tflops17,406—
Installation Year2,024—
InterconnectHPE Slingshot-11—
Launch Price USD—3,999
LocationDOE/NNSA/Lawrence Livermore National Laboratory—
ManufacturerHPE—
Memory bandwidth (GB/s)—273
Memory Interface BIT—256
Memory type—LPDDR5X
ModelHPE Cray EX255a—
MSRP (USD)↓ better—4,699
NIC—ConnectX-7 @ 200 Gbps
Power KW29,684.62—
Price Change Effective—2026-02-23
PSU Watts—240
Rmax Pflops1,809—
Rpeak Pflops2,821.1—
Storage—4TB NVMe M.2 self-encrypting
Superchip—NVIDIA GB10 Grace Blackwell
Top500 Jun2026 NO1LineShine (National Supercomputing Centre in Shenzhen, China)—
Top500 Rank Jun20262—
Top500 Rank Nov20241—
Top500 Rank Nov20251—
Unified Memory GB—128
Weight KG—1.2
Wireless—Wi-Fi 7, Bluetooth 5.4