Rubin GPU specs
NVIDIA · Ramping · first available Aug 2026. Dense compute, memory, bandwidth and power from the vendor's documents; each precision stays separate.
All accelerators · Compare with B300 (HGX Blackwell Ultra)
Specifications
| Dense BF16 · FP32 accumulate | 4,000 TFLOPS |
|---|---|
| Dense FP8 · FP32 accumulate | 17,500 TFLOPS |
| Dense FP4 · FP32 accumulate | 35,000 TFLOPS |
| Memory | 288 GB · HBM |
| Memory bandwidth | 19.2 TB/s |
| Maximum chip power | 1,800 W |
| Interconnect | NVLink 6 · 3 TB/s |
| First availability | Aug 2026 |
| Availability | Ramping |
NVIDIA's individual-GPU table specifies dense BF16, FP8/FP6 training and NVFP4 training directly. FP4 here uses its 35 PF dense training figure, not the separate 50 PF sparse inference claim. Bandwidth and NVLink follow the Oct 2026 NVL72 figures (19.2 TB/s, 3 TB/s); older HGX pages still say 22 and 3.6 TB/s. 1,800 W is NVIDIA's NVL4 benchmark power assumption, and launch timing is an estimate.
Dense tensor rates with FP32 accumulation, never sparse or FP16-accumulate headline figures. Memory is in decimal GB. The est marker flags a value its vendor-document review did not confirm.
Rent it
No tracked rental quote. The site tracks providers' published list prices; this part may still be rentable under terms it does not record.
Value ratios
| $ per dense BF16 PFLOP-hour | No on-demand quote |
|---|---|
| Dense BF16 TFLOPS per watt | 2.22 |
| Bandwidth bytes per 1,000 BF16 FLOP | 4.80 |
| $ per dense FP8 PFLOP-hour | No on-demand quote |
| Dense FP8 TFLOPS per watt | 9.72 |
| Bandwidth bytes per 1,000 FP8 FLOP | 1.10 |
| $ per GB of memory per hour | No on-demand quote |
Prices divide the cheapest on-demand list price; theoretical ratios do not measure application speed.
Sources
Specifications reviewed . Rubin GPU column: 19.2 TB/s and NVLink 6 at 3 TB/s (HGX and preliminary DGX Rubin NVL8 pages still imply 22 and 3.6 TB/s). 1,800 W is the datasheet's NVL4 benchmark power; NVIDIA states no process node.
First availability: NVIDIA Q2 FY2027 earnings call ↗ (2026-08-26): “We commenced production shipments of Vera Rubin earlier this month.”