Home / Models / GPT-OSS 120B / NVIDIA RTX 4090 24 GB
Can GPT-OSS 120B run on NVIDIA RTX 4090 24 GB?
No. Estimated memory for GPT-OSS 120B exceeds NVIDIA RTX 4090 24 GB, including the modeled offload allowance.
Can it run?
- Can it run?
- No (calculated estimate).
- Full GPU fit?
- No
- Model
- GPT-OSS 120B · 117B
- GPU
- NVIDIA RTX 4090 24 GB · 24 GB advertised
Memory calculation
Breakdown for Q4 at 8K context, batch size 1. Calculator v1.0.0.
| Model weights | 68.6 GB |
|---|---|
| KV cache | 0.6 GB |
| Runtime reserve | 3.9 GB |
| Safety margin | 2.3 GB |
| Required (estimated) | 75.5 GB |
| GPU usable VRAM | 21.6 GB |
Result: DOES NOT FIT
Quantization table
| Quantization | 2K | 4K | 8K | 16K | 32K | 64K | 128K |
|---|---|---|---|---|---|---|---|
| BF16 | No | No | No | No | No | No | No |
| FP16 | No | No | No | No | No | No | No |
| Q3 | No | No | No | No | No | No | No |
| Q4 | No | No | No | No | No | No | No |
| Q5 | No | No | No | No | No | No | No |
| Q6 | No | No | No | No | No | No | No |
| Q8 | No | No | No | No | No | No | No |
What fits entirely in VRAM?
No calculated full-VRAM fit at the evaluated quantizations and context lengths.
What requires RAM offload?
Offload is shown only when the model does not fully fit in usable VRAM but stays within the modeled offload allowance.
Available graphics cards
These SKUs use this GPU chip. Amazon CTAs appear only for EXACT/HIGH matches. Absence of a price does not change the compatibility result above.
MSI GAMING GeForce RTX 4090 X TRIO 24G NVIDIA 24 GB GDDR6X
24 GB · Amazon EXACT
$3490.00
Check price on Amazon
ASUS ROG -STRIX-RTX4090-O24G-WHITE NVIDIA GeForce RTX 4090 24 GB GDDR6X
24 GB · Amazon EXACT
$2799.99
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GIGABYTE AERO GeForce RTX 4090 OC 24G NVIDIA 24 GB GDDR6X
24 GB · Amazon EXACT
$2579.99
Check price on Amazon
GIGABYTE GAMING GeForce RTX 4090 OC 24G NVIDIA 24 GB GDDR6X
24 GB · Amazon EXACT
Check price on Amazon
ASUS TUF Gaming TUF-RTX4090-O24G-GAMING NVIDIA GeForce RTX 4090 24 GB GDDR6X
24 GB · Amazon EXACT
Check price on Amazon
MSI SUPRIM GeForce RTX 4090 LIQUID X 24G NVIDIA 24 GB GDDR6X
24 GB · Amazon EXACT
Check price on Amazon
GIGABYTE AORUS XTREME AORUS GeForce RTX 4090 XTREME WATERFORCE 24G NVIDIA 24 GB GDDR6X
24 GB · Amazon EXACT
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GIGABYTE GeForce RTX 4090 WINDFORCE V2 24G NVIDIA 24 GB GDDR6X
24 GB · Amazon EXACT
Check price on Amazon
GIGABYTE AORUS GeForce RTX 4090 MASTER 24G NVIDIA 24 GB GDDR6X
24 GB · Amazon EXACT
Check price on Amazon
MSI GAMING GEFORCE RTX 4090 X SLIM 24G graphics card NVIDIA 24 GB GDDR6X
24 GB · Amazon EXACT
Check price on Amazon
GIGABYTE GeForce RTX 4090 WINDFORCE 24G NVIDIA 24 GB GDDR6X
24 GB · Amazon EXACT
Check price on Amazon
ASUS ROG -STRIX-RTX4090-O24G-GAMING NVIDIA GeForce RTX 4090 24 GB GDDR6X
24 GB · Amazon unmatched
ASUS TUF Gaming TUF-RTX4090-O24G-OG-GAMING NVIDIA GeForce RTX 4090 24 GB GDDR6X
24 GB · Amazon unmatched
ASUS ROG -STRIX-RTX4090-24G-GAMING NVIDIA GeForce RTX 4090 24 GB GDDR6X
24 GB · Amazon unmatched
MSI VENTUS GeForce RTX 4090 3X E 24G OC NVIDIA 24 GB GDDR6X
24 GB · Amazon unmatched
Sources
Model: official config openai/gpt-oss-120b (main). GPU/product specs: Icecat. Compatibility: RigForAI calculator v1.0.0 estimated VRAM · Q8 at 8K: DOES_NOT_FIT. Amazon: affiliate commerce match, not a spec source.