Home / Models / Gemma 4 31B Instruct / NVIDIA RTX 4080 16 GB

Calculated memory fit · performance is a separate section

Can Gemma 4 31B Instruct run on NVIDIA RTX 4080 16 GB?

Can it run? Yes, with CPU/RAM offload. Full GPU fit? No.

Can it run?

Can it run?
Yes, with CPU/RAM offload. This is not equivalent to full-GPU inference.
Full GPU fit?
No
Model
Gemma 4 31B Instruct · 31B
GPU
NVIDIA RTX 4080 16 GB · 16 GB advertised

What else can NVIDIA RTX 4080 16 GB run? · Find other GPUs for Gemma 4 31B Instruct · See 2× multi-GPU options

Memory calculation

Breakdown for Q4 at 8K context, batch size 1. Calculator v1.0.0.

Model weights18.3 GB
KV cache7.5 GB
Runtime reserve1.4 GB
Safety margin0.8 GB
Required (estimated)28.1 GB
GPU usable VRAM14.4 GB

Result: CPU RAM OFFLOAD REQUIRED

Quantization table

Quantization2K4K8K16K32K64K128K256K
BF16NoNoNoNoNoNoNoNo
FP16NoNoNoNoNoNoNoNo
Q3OffloadOffloadOffloadOffloadOffloadOffloadOffloadOffload
Q4OffloadOffloadOffloadOffloadOffloadOffloadOffloadOffload
Q5OffloadOffloadOffloadOffloadOffloadOffloadOffloadOffload
Q6OffloadOffloadOffloadOffloadOffloadOffloadOffloadOffload
Q8OffloadOffloadOffloadOffloadOffloadOffloadOffloadOffload

What fits entirely in VRAM?

No calculated full-VRAM fit at the evaluated quantizations and context lengths.

What requires RAM offload?

Weights may run with CPU/RAM offload. That is not equivalent to full-GPU inference. Performance numbers below are only published for full-VRAM fits.

Performance

No llama.cpp performance result is published for this pair yet. Memory fit above is unchanged. How performance is calculated

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.

Check price on Amazon

MSI

MSI SUPRIM GeForce RTX 4080 16GB X NVIDIA GDDR6X

16 GB · Amazon unmatched

Check availability

Sources

Model: official config google/gemma-4-31B-it (main). GPU/product specs: Icecat. Compatibility: RigForAI calculator v1.0.0 estimated VRAM · Q8 at 8K: CPU_RAM_OFFLOAD_REQUIRED. Amazon: affiliate commerce match, not a spec source.