Can I Run Gemma 4 on AMD Radeon RX 7800 XT?

作者： Jakub Rusinowski · 最后更新： 2026年7月12日

Yes, comfortably — you'll have ~8.8 GB of headroom running Gemma 4 12B (Unified) at Q4_K_M (7.245 GB, ~44 tok/s (est.)) with room for up to 32K context.

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AMD Radeon RX 7800 XT 16GB
16 GB VRAM · 263 W board power
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AMD Radeon RX 7800 XT Specs

VRAM16 GB
Memory Bandwidth624 GB/s

Gemma 4 12B (Unified) on the AMD Radeon RX 7800 XT: VRAM by quantization

QuantVRAM neededFits 16 GB?Max context
F1625.5 GB✗ No—
Q8_014.2 GB✓ Yes8K
Q6_K11.3 GB✓ Yes32K
Q5_K_M10 GB✓ Yes32K
Q4_K_M8.7 GB✓ Yes32K
Q3_K_M6.6 GB✓ Yes32K
Q2_K5.4 GB✓ Yes64K

VRAM needed assumes a 4K-token context with an f16 KV cache; “Max context” is the largest window that still fits in 16 GB. Figures are estimates from parameter count, quantization and memory bandwidth — the analyzer lets you tune KV-cache quant and context.

Gemma 4 Sizes That Fit the AMD Radeon RX 7800 XT

Gemma 4 12B (Unified)Q4_K_M · 7.245 GB · ~44 tok/s (est.)
Gemma 4 E4BQ4 (QAT) · 4.5 GB · ~62 tok/s (est.)
Gemma 4 E2BQ4 (QAT) · 2.86875 GB · ~85 tok/s (est.)
Buy vs. rent Gemma 4
Buy the GPU
~$499
AMD Radeon RX 7800 XT · MSRP
Rent by the hour
from $0.34/hr
RTX 4090 (24 GB) class

At 2 hrs/day, buying (~$499) beats renting at $0.34/hr after about 2.0 years.

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RunPod $0.34/hr
Rent on RunPod →
Vast.ai $0.35/hr · typical low · varies
Rent on Vast.ai →

Cloud rates verified 2026-07 — estimates, and marketplace prices vary. Buying price is GPU MSRP only, not a full PC.

FAQ

Gemma 4 on the AMD Radeon RX 7800 XT — does it fit?

Yes, comfortably — you'll have ~8.8 GB of headroom running Gemma 4 12B (Unified) at Q4_K_M (7.245 GB, ~44 tok/s (est.)) with room for up to 32K context.

Which Gemma 4 variant fits best on the AMD Radeon RX 7800 XT?

Gemma 4 12B (Unified) at Q4_K_M quantization (7.245 GB), estimated ~44 tokens/sec, up to 32K context.

Every Gemma 4 size on the AMD Radeon RX 7800 XT

SizeVRAMVerdictSpeed
Gemma 4 31B18.7 GBRuns at Q2_K—
Gemma 4 26B-A4B15.7 GBRuns at Q3_K_M—
Gemma 4 12B (Unified)7.2 GBRuns~44 tok/s
Gemma 4 E4B4.5 GBRuns~62 tok/s
Gemma 4 E2B2.9 GBRuns~85 tok/s

Gemma 4 on Other GPUs

Popular Models on the AMD Radeon RX 7800 XT

VRAM Tier

Troubleshooting

Buying Guide

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