B200 SXM vs RTX 4090
Head-to-head specifications
| Metric | B200 SXM | RTX 4090 | Difference |
|---|---|---|---|
| FP32 compute (TFLOPS) | 17.6 | 82.6 | -78.7% |
| VRAM | 192 GB HBM3e | 24 GB GDDR6X | — |
| Memory bandwidth (GB/s) | 8,000 | 1,008 | +693.7% |
| TDP (W) | 1020 | 450 | — |
| Stable Diffusion (it/s) | 120.0 | 33.0 | +263.6% |
| LLM inference (tokens/s) | 450 | 80 | +462.5% |
| Launch MSRP (USD) | $35,000 | $1,599 | +2,088.9% |
- RTX 4090 offers 82.6 TFLOPS of FP32 compute versus 17.6. These cards span different eras or segments, so modern gaming benchmarks are not directly comparable — judge them within their own generation and use case.
Verdict: B200 SXM or RTX 4090?
B200 SXM advantages
- Video memory (+88%)
- Memory bandwidth (+87%)
- AI image generation (+73%)
- Local LLM inference (+82%)
RTX 4090 advantages
- Power efficiency (+56%)
- Affordability (+95%)
Which should you choose?
- Choose the B200 SXM if you play the latest titles at high textures or do GPU-accelerated work.
- Choose the RTX 4090 if you want lower power draw, heat and noise.
- Choose the B200 SXM if you work with high-resolution textures or memory-bound workloads.
B200 SXM vs RTX 4090: which should you choose?
B200 SXM — NVIDIA server graphics card (2024, Blackwell) with 192 GB of HBM3e; launched at $35,000.
RTX 4090 — NVIDIA desktop graphics card (2022, Ada Lovelace) with 24 GB of GDDR6X, averaging 153 fps at 1440p; launched at $1,599.
B200 SXM vs RTX 4090: RTX 4090 has more raw compute. RTX 4090 offers 82.6 TFLOPS of FP32 compute versus 17.6. These cards span different eras or segments, so modern gaming benchmarks are not directly comparable — judge them within their own generation and use case.
Different eras, different missions
These two parts do not compete head-to-head: B200 SXM (2024, Server) and RTX 4090 (2022, Desktop) come from different generations or market segments, so modern game benchmarks do not apply to both. The specification table above is best read as architectural context — process node, memory technology and power budgets show how far GPU design has moved.
Specifications at a glance
B200 SXM carries 192 GB of HBM3e against 24 GB of GDDR6X on RTX 4090, with board powers of 1020 W and 450 W respectively.
The verdict
Both are credible choices in the graphics card comparison space; the specification table above lays out every metric so you can weigh the trade-offs that matter to you. Pick the one whose strengths line up with how you will actually use it.
Frequently asked questions
Is the B200 SXM better than the RTX 4090?
B200 SXM takes the overall edge, though RTX 4090 wins in specific areas worth weighing. RTX 4090 offers 82.6 TFLOPS of FP32 compute versus 17.6. These cards span different eras or segments, so modern gaming benchmarks are not directly comparable — judge them within their own generation and use case.
What is the main difference between the B200 SXM and the RTX 4090?
RTX 4090 offers 82.6 TFLOPS of FP32 compute versus 17.6. These cards span different eras or segments, so modern gaming benchmarks are not directly comparable — judge them within their own generation and use case.
Which should I choose?
Choose the B200 SXM if you play the latest titles at high textures or do GPU-accelerated work. Choose the RTX 4090 if you want lower power draw, heat and noise.
Methodology
Graphics cards are compared on 3DMark Time Spy scores, average gaming frame rates at 1080p/1440p/4K, FP32 compute throughput, VRAM capacity and type, memory bandwidth, board power (TDP) and launch MSRP — plus AI workload throughput (Stable Diffusion iterations/s and local LLM tokens/s) where measured. Vintage and server GPUs without modern benchmark results are compared on specifications only, clearly labelled. Frame rates are averages across a game suite at high settings; specific titles vary.