Rebellions RebelServer
A 5U server holding eight Rebel100 cards, driven by two AMD EPYC 9355 processors with 1.5 TB of DDR5 host memory across 24 DIMMs, drawing 4 kW typically and 7 kW at maximum, and weighing 45.3 kg gross. Accelerator memory is 1.152 TB of HBM3E across the eight cards at 38.4 TB/s. Compute is 16.384 PFLOPS of FP8 and 8.192 PFLOPS of FP16, dense — Rebellions labels the Rebel100 figures "Compute (Dense)" on its own homepage. Note that Rebellions' server page states "up to 2 PFLOPS FP8 performance with 8 RebelCards per server"; that 2 PFLOPS is the per-card figure rather than the per-server one, as its own rack and pod pages confirm, since 32 cards give 65.5 PFLOPS and 256 give 524.3. Note also that the 1.5 TB on that page is DDR5 host memory, not accelerator memory.
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System Details
GPU Configuration
System Specifications
Precision Performance Breakdown
| Precision | System Performance | Per GPU | Efficiency |
|---|---|---|---|
| 8,192 TFLOPS | 1,024 TFLOPS | — | |
| 16,384 TFLOPS | 2,048 TFLOPS | — |
Where a vendor states a basis, the figure shown is the dense one, and any figure it publishes is listed separately. Vendors commonly headline the sparse number instead: for NVIDIA's 2:4 structured sparsity that is exactly twice the dense figure, though other vendors' sparse modes do not all follow that ratio.
Powered by Rebellions Rebel100
This system utilizes 8 × Rebellions Rebel100 GPUs, each delivering exceptional performance for AI and HPC workloads.
Per GPU TDP
600W
Per GPU Memory
144 GB
Process Node
4nm
Architecture
REBEL
Documentation & Resources
Flopper Spec Sheet
Rebellions RebelServer specifications, generated from our database. Printable.
Vendor product page
Rebellions RebelServer documentation
ATOM-Max Server brochure v1.6 (Rebellions)
Rebellions • 2026-06-18
Typical Use Cases
The Rebellions RebelServer runs 8× Rebel100 GPUs over Backend 4 x 400G QSFP112-DD; 1 x 100G 2-port QSFP56; 1 x 10G/25G 2-port SFP28 (OCP 3.0), delivering 16,384 TFLOPS FP8 dense.