RX 7900 XTX
amd · rdna3 · 24 GB GDDR6 · 355W TDP
VRAM
24 GB
BF16 TFLOPS
123
Bandwidth
960 GB/s
From
$0.20/hr
Spec Sheet
Pricing by Provider
| Provider | On-Demand | Reserved | Spot | Badge |
|---|---|---|---|---|
| vast_ai | $0.35/hr | - | $0.20/hr | Cheapest |
Compatible Models (240)
Single GPU (169 models)
Multi-GPU (71 models)
Training Capabilities
Estimated GPU count for full fine-tuning (AdamW, BF16) and QLoRA
| Model Size | Full Fine-Tune | QLoRA |
|---|---|---|
| 7B model | 6 GPUs | 1 GPU |
| 13B model | 11 GPUs | 1 GPU |
| 70B model | 55 GPUs | 2 GPUs |
Energy Efficiency
Estimated tokens/second per Watt for popular models
Similar GPUs
| GPU | VRAM | BF16 TFLOPS | BW (GB/s) | From |
|---|---|---|---|---|
| Radeon PRO W7900 | 48 GB | 122 | 864 | $0.85/hr |
| A10G | 24 GB | 35 | 600 | $0.30/hr |
| A30 | 24 GB | 165 | 933 | $0.35/hr |
| L4 | 24 GB | 121 | 300 | $0.29/hr |
| RTX 4090 | 24 GB | 165 | 1008 | $0.39/hr |
Methodology Note
Performance estimates for the RX 7900 XTXare based on InferenceBench's roofline performance model with CUDA kernel-level optimization including FlashAttention v2 and PagedAttention. Memory calculations account for model weights (24 GB GDDR6 available), KV-cache allocation, and activation memory. Throughput predictions use the RX 7900 XTX's rated 960 GB/s memory bandwidth and 123 BF16 TFLOPS compute capacity as roofline ceilings, with empirical correction factors per GPU architecture (rdna3). See our full methodology.
Frequently Asked Questions
How many AI models can run on RX 7900 XTX?
The RX 7900 XTX can run 240 AI models from our database within a single node. Compatible models range across various parameter sizes depending on the quantization precision (BF16, FP8, INT4). Smaller models fit on a single GPU while larger models may require multi-GPU setups up to 4x RX 7900 XTX.
What is the RX 7900 XTX inference throughput?
The RX 7900 XTX delivers 123 BF16 TFLOPS and 123 FP8 TFLOPS with 960 GB/s memory bandwidth. Actual inference throughput (tokens/sec) depends on the model size, precision, and batch size. Use our calculator for model-specific throughput estimates.
How much does RX 7900 XTX cost per hour?
The RX 7900 XTX is available starting from $0.20/hour via vast_ai. Prices vary by provider and pricing tier (on-demand, reserved, spot). Compare pricing across all providers in the table above.