RX 6600 XT vs H100 SXM5
Head-to-head specifications
| Metric | RX 6600 XT | H100 SXM5 | Difference |
|---|---|---|---|
| FP32 compute (TFLOPS) | 10.6 | 4.2 | +152.4% |
| VRAM | 8 GB GDDR6 | 80 GB HBM3 | — |
| Memory bandwidth (GB/s) | 224 | 3,350 | -93.3% |
| TDP (W) | 160 | 700 | — |
| Stable Diffusion (it/s) | 1.6 | 85.0 | -98.1% |
| LLM inference (tokens/s) | 11 | 320 | -96.6% |
| Launch MSRP (USD) | $379 | $30,000 | -98.7% |
- RX 6600 XT offers 10.6 TFLOPS of FP32 compute versus 4.2. 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: RX 6600 XT or H100 SXM5?
RX 6600 XT advantages
- Power efficiency (+77%)
- Affordability (+99%)
H100 SXM5 advantages
- Video memory (+90%)
- Memory bandwidth (+93%)
- AI image generation (+98%)
- Local LLM inference (+97%)
Which should you choose?
- Choose the RX 6600 XT if you want lower power draw, heat and noise.
- Choose the H100 SXM5 if you play the latest titles at high textures or do GPU-accelerated work.
- Choose the RX 6600 XT if you want the better price for the performance.
RX 6600 XT vs H100 SXM5: which should you choose?
RX 6600 XT — AMD desktop graphics card (2021, RDNA 2) with 8 GB of GDDR6, averaging 29 fps at 1440p; launched at $379.
H100 SXM5 — NVIDIA server graphics card (2022, Hopper) with 80 GB of HBM3; launched at $30,000.
RX 6600 XT vs H100 SXM5: RX 6600 XT has more raw compute. RX 6600 XT offers 10.6 TFLOPS of FP32 compute versus 4.2. 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: RX 6600 XT (2021, Desktop) and H100 SXM5 (2022, Server) 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
RX 6600 XT carries 8 GB of GDDR6 against 80 GB of HBM3 on H100 SXM5, with board powers of 160 W and 700 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 RX 6600 XT better than the H100 SXM5?
H100 SXM5 takes the overall edge, though RX 6600 XT wins in specific areas worth weighing. RX 6600 XT offers 10.6 TFLOPS of FP32 compute versus 4.2. 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 RX 6600 XT and the H100 SXM5?
RX 6600 XT offers 10.6 TFLOPS of FP32 compute versus 4.2. 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 RX 6600 XT if you want lower power draw, heat and noise. Choose the H100 SXM5 if you play the latest titles at high textures or do GPU-accelerated work.
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.