CARDINALEXACT VARIANT REFERENCE
B300 SXM 288GB
SXM accelerator reference for qualified Blackwell AI server platforms
SPECIFICATIONS
| Memory per accelerator | 288 GB HBM3e |
|---|---|
| Memory bandwidth | 8000 GB/s |
| Form factor | SXM module |
| Maximum accelerator power | Check manufacturer source |
Manufacturer specifications describe the product, not the condition of an offered unit. Checked 2026-09-08
PLATFORM AND SOFTWARE
- Per-GPU memory and memory bandwidth are explicitly stated; no platform total was divided
- SXM generation number and mechanical dimensions are not established in the checked sources
- Requires a qualified B300 server platform; do not conflate B300 with a GB300 Grace Blackwell system
- Maximum power must be confirmed for the exact offered platform
- Verify Blackwell architecture support in the exact CUDA, framework and application build
- Memory capacity does not establish model fit, precision support or workload throughput
- Platform firmware, software support and commercial entitlements require separate qualification
A universal per-GPU maximum was not established; DGX power-capping example values are not a product rating
INTERCONNECT
NVLink
1800 GB/s. Reference architecture GPU-to-GPU aggregate interface rating, distinct from 14.4TB/s node total and external NIC rates
MANUFACTURER SOURCES
NVIDIA HGX reference architecture: GPU and node specifications ↗NVIDIA · Checked 2026-09-08NVIDIA DGX B300 power-capping guidance ↗NVIDIA · Checked 2026-09-08HOW CARDINAL HELPS
Share your quantity, destination and server model, if known. We help turn those requirements into a clearly specified request.
- Help confirm the exact configuration and platform requirements
- Request supplier records for condition, unit identifiers and available testing evidence
- Clarify included accessories, delivery and proposed warranty terms before you decide
Any additional testing or guarantees must be agreed in the written offer.