microsoft/Phi-3-medium-4k-instruct
14B params · est. 8.4 GB Q4
NVIDIA GeForce RTX 4090 24GB: likely fitAMD Radeon RX 7900 XTX 24GB: likely fit
Head-to-head
NVIDIA GeForce RTX 4090 24GB vs AMD Radeon RX 7900 XTX 24GB
Dedicated comparison page for two real hardware profiles. This is built from your benchmark database, trust metadata, and buyer flow instead of generic spec-sheet comparisons.
Device profile
NVIDIA GeForce RTX 4090 24GB
32B-class Q4 full-GPU at 70+ tok/s — Qwen 3 32B, Qwen 2.5 Coder 32B, QwQ 32B all fit comfortably
Curated Aggregate·2026-05-2524GB / $1.6k
Best LLM
540 tok/s
VRAM
24 GB
TDP
450 W
Rating
9.1
Device profile
AMD Radeon RX 7900 XTX 24GB
24GB VRAM for Linux-native builders who want NVIDIA-tier capacity at AMD pricing and are comfortable with software tradeoffs
Curated Aggregate·2026-03-1148GB / $999
Best LLM
195 tok/s
VRAM
48 GB
TDP
355 W
Rating
9.0
Quick verdict
NVIDIA GeForce RTX 4090 24GB scores 9.1 while AMD Radeon RX 7900 XTX 24GB scores 9.0 on MyAIHardware's composite rating.
AMD Radeon RX 7900 XTX 24GB wins VRAM capacity.
AMD Radeon RX 7900 XTX 24GB is the lower-power path.
On shared workload evidence, Llama 3 8B Q4 is benchmarked at 132 tok/s for NVIDIA GeForce RTX 4090 24GB and 95.0 tok/s for AMD Radeon RX 7900 XTX 24GB.
| Metric | NVIDIA GeForce RTX 4090 24GB | AMD Radeon RX 7900 XTX 24GB |
|---|---|---|
| MyAI rating | 9.1 | 9.0 |
| Best LLM | 540 tok/s | 195 tok/s |
| VRAM | 24 GB | 48 GB |
| TDP | 450 W | 355 W |
| MSRP | $1.6k | $999 |
| Workloads | 12 | 12 |
Shared benchmark rows
Llama 3 8B Q4
Llama 3 8B Q4
NVIDIA GeForce RTX 4090 24GB
132 tok/s
Q4_K_M / 24GB / 2025-10-02
AMD Radeon RX 7900 XTX 24GB
95.0 tok/s
Q4_K_M / 24GB / 2025-06-09
Mistral 7B Q4
Mistral 7B
NVIDIA GeForce RTX 4090 24GB
145 tok/s
Q4_K_M / 24GB / 2026-03-19
AMD Radeon RX 7900 XTX 24GB
95.0 tok/s
Q4_K_M / 24GB / 2025-02-12
Gemma 2 9B Q4
Gemma 2 9B
NVIDIA GeForce RTX 4090 24GB
108 tok/s
Q4_K_M / 24GB / 2025-03-07
AMD Radeon RX 7900 XTX 24GB
58.0 tok/s
Q4_K_M / 24GB / 2025-03-22
DeepSeek-R1 Distill 7B
DeepSeek-R1 7B
NVIDIA GeForce RTX 4090 24GB
118 tok/s
Q4_K_M / 24GB / 2026-01-02
AMD Radeon RX 7900 XTX 24GB
78.0 tok/s
Q4_K_M / 24GB / 2025-04-15
Qwen 2.5 14B Q4
Qwen 2.5 14B
NVIDIA GeForce RTX 4090 24GB
68.0 tok/s
Q4_K_M / 24GB / 2025-07-04
AMD Radeon RX 7900 XTX 24GB
48.0 tok/s
Q4_K_M / 24GB / 2024-11-27
Llama 3 70B Q4
Llama 3 70B Q4
NVIDIA GeForce RTX 4090 24GB
14.0 tok/s
Q4_K_M / 24GB / 2026-03-08
AMD Radeon RX 7900 XTX 24GB
11.0 tok/s
Q4_K_M / 24GB / 2025-08-13
External quality layer
Best open models likely to fit this class
This shortlist cross-references the external OpenEvals snapshot with an approximate Q4-class VRAM estimate. Use it to sanity-check whether the hardware you are comparing can host strong open models, not just benchmark toy workloads.
91.0
Qwen/Qwen2-72B
73B params · est. 43.6 GB Q4
NVIDIA GeForce RTX 4090 24GB: tight / noAMD Radeon RX 7900 XTX 24GB: likely fit
microsoft/Phi-3.5-mini-instruct
3.8B params · est. 2.3 GB Q4
NVIDIA GeForce RTX 4090 24GB: likely fitAMD Radeon RX 7900 XTX 24GB: likely fit
internlm/internlm2_5-7b-chat
7.7B params · est. 4.6 GB Q4
NVIDIA GeForce RTX 4090 24GB: likely fitAMD Radeon RX 7900 XTX 24GB: likely fit