Best AI Models for AMD Radeon RX 7800 XT (16 GB)

Runs 14B models well; 27–31B only just fits.

16 GB GDDR6624 GB/s75 TFLOPS FP16263 WRDNA 3 2023

What LLMs can the RX 7800 XT run?

#	Model	Speed	Quant · VRAM
1	Qwen3.5 9BAlibabaHow to run → Q4_K_M · 6.6 GB · 58.9 t/s	58.9 tok/s	Q4_K_M · 6.6 GB
2	Qwen3.5 4BAlibaba Q4_K_M · 3.4 GB · 115 t/s	115 tok/s	Q4_K_M · 3.4 GB
3	GPT OSS 20BOpenAI Q4_K_M · 13.1 GB · 85.3 t/s	85.3 tok/s	Q4_K_M · 13.1 GB
4	Phi 4Microsoft Q4_K_M · 12.5 GB · 39.3 t/s	39.3 tok/s	Q4_K_M · 12.5 GB
5	Gemma 4 12B ITGoogle Q4_K_M · 9.0 GB · 45.5 t/s	45.5 tok/s	Q4_K_M · 9.0 GB

#	Model	Speed	Coding Score	Quant · VRAM
1	GPT OSS 20BOpenAIHow to run → Q4_K_M · 13.1 GB · 85.3 t/s	85.3 tok/s		Q4_K_M · 13.1 GB
2	Llama 3.1 8B InstructMeta Q4_K_M · 7.9 GB · 70.6 t/s	70.6 tok/s		Q4_K_M · 7.9 GB
3	Qwen3.5 9BAlibaba Q4_K_M · 6.6 GB · 58.9 t/s	58.9 tok/s	overall	Q4_K_M · 6.6 GB
4	Gemma 4 12B ITGoogle Q4_K_M · 9.0 GB · 45.5 t/s	45.5 tok/s		Q4_K_M · 9.0 GB
5	MiMo V2.6 Distill Qwen 9BXiaomi Q4_K_M · 6.5 GB · 60.3 t/s	60.3 tok/s		Q4_K_M · 6.5 GB

#	Model	Speed	Quant · VRAM
1	Qwen3.5 9BAlibabaHow to run → Q4_K_M · 6.6 GB · 58.9 t/s	58.9 tok/s	Q4_K_M · 6.6 GB
2	GPT OSS 20BOpenAI Q4_K_M · 13.1 GB · 85.3 t/s	85.3 tok/s	Q4_K_M · 13.1 GB
3	Qwen3 8BAlibaba Q4_K_M · 7.6 GB · 67.8 t/s	67.8 tok/s	Q4_K_M · 7.6 GB
4	Llama 3.1 8B InstructMeta Q4_K_M · 7.9 GB · 70.6 t/s	70.6 tok/s	Q4_K_M · 7.9 GB
5	Gemma 4 12B ITGoogle Q4_K_M · 9.0 GB · 45.5 t/s	45.5 tok/s	Q4_K_M · 9.0 GB

#	Model	Speed	Quant · VRAM
1	Qwen3.5 9BAlibabaHow to run → Q4_K_M · 6.6 GB · 58.9 t/s	58.9 tok/s	Q4_K_M · 6.6 GB
2	Qwen3.5 4BAlibaba Q4_K_M · 3.4 GB · 115 t/s	115 tok/s	Q4_K_M · 3.4 GB
3	Mistral Nemo Instruct 2407Mistral AI Q4_K_M · 11.0 GB · 46.4 t/s	46.4 tok/s	Q4_K_M · 11.0 GB
4	Llama 3.1 8B InstructMeta Q4_K_M · 7.9 GB · 70.6 t/s	70.6 tok/s	Q4_K_M · 7.9 GB
5	Gemma 4 12B ITGoogle Q4_K_M · 9.0 GB · 45.5 t/s	45.5 tok/s	Q4_K_M · 9.0 GB

#	Model	Speed ↓	Quant · VRAM
1	Qwen3.5 4BAlibabaHow to run → Q4_K_M · 3.4 GB · 115 t/s	115 tok/s	Q4_K_M · 3.4 GB
2	GPT OSS 20BOpenAI Q4_K_M · 13.1 GB · 85.3 t/s	85.3 tok/s	Q4_K_M · 13.1 GB
3	Qwen3.5 9BAlibaba Q4_K_M · 6.6 GB · 58.9 t/s	58.9 tok/s	Q4_K_M · 6.6 GB
4	Gemma 4 12B ITGoogle Q4_K_M · 9.0 GB · 45.5 t/s	45.5 tok/s	Q4_K_M · 9.0 GB
5	Phi 4Microsoft Q4_K_M · 12.5 GB · 39.3 t/s	39.3 tok/s	Q4_K_M · 12.5 GB

#	Model	Speed	Quant · VRAM
1	Qwen3.5 9BAlibabaHow to run → Q4_K_M · 6.6 GB · 58.9 t/s	58.9 tok/s	Q4_K_M · 6.6 GB
2	Qwen3.5 4BAlibaba Q4_K_M · 3.4 GB · 115 t/s	115 tok/s	Q4_K_M · 3.4 GB
3	Gemma 3 12B ITGoogle Q4_K_M · 10.9 GB · 46.6 t/s	46.6 tok/s	Q4_K_M · 10.9 GB
4	Gemma 3 4B ITGoogle Q4_K_M · 5.0 GB · 132 t/s	132 tok/s	Q4_K_M · 5.0 GB
5	MiMo V2.6 Distill Qwen 9BXiaomi Q4_K_M · 6.5 GB · 60.3 t/s	60.3 tok/s	Q4_K_M · 6.5 GB

See all 307 models on the RX 7800 XT →Best quant that fits · speeds estimated on this card

About the RX 7800 XT

The RX 7800 XT is a solid mid-range card in the 16 GB class: it runs 14B models well. It is more efficient per watt than most 16 GB cards, and at its $499 MSRP it gave the best speed per dollar of the cards compared. RDNA 3 generation, released 2023.

Speed in 16 GB#8624 GB/s

Per watt#80.22 tok/s per W on Qwen3.5 9B (9B params)

Per dollar#111.8 tok/s per $100 on Qwen3.5 9B (9B params)

GenerationRDNA 3released 2023

RX 7800 XT strengths and weaknesses

Strengths

Runs 35B MoE models: Qwen3.6 35B A3B at 74.0 tok/s in 15.7 GB

Weaknesses

70B models don't fit: Llama 3.3 70B Instruct needs 51.3 GB at Q4 vs 16 GB here
ROCm, not CUDA: No FP8 weights; MXFP4 only through llama.cpp, not vLLM

Speed per dollar and per watt

NewUsed

On Qwen3.5 9B (9B params) at Q4_K_M. New prices are compared with new, used with used. The last two columns are the speed you get per $100 of price and per 100 W of board power; higher is better. The RX 7800 XT has no current price, so it is shown at its MSRP.

Card	New price	tok/s	tok/s per $100	tok/s per 100 W
RX 7800 XT16 GB	about $499	58.9	11.8	22.4
RTX 507012 GB	about $840	68.7	8.2	27.5
RX 7900 XTX24 GB	about $1,130	90.6	8.0	25.5
RTX 5070 Ti16 GBBest new value	about $1,170	91.6	7.8	30.5
RX 907016 GB	about $800	60.4	7.6	27.5
RX 9070 XT16 GB	about $815	60.4	7.4	19.9
RTX 508016 GB	about $1,690	98.1	5.8	27.3
RX 9060 XT 16GB16 GB	about $590	30.2	5.1	18.9

Card	Used price	tok/s	tok/s per $100	tok/s per 100 W
RTX 3060 12GB12 GBBest used value	about $329	36.8	11.2	21.6
RX 907016 GB	about $650	60.4	9.3	27.5
RX 7900 XTX24 GB	about $1,000	90.6	9.1	25.5
RTX 407012 GB	about $575	51.5	9.0	25.8
RTX 5070 Ti16 GB	about $1,100	91.6	8.3	30.5
RX 9070 XT16 GB	about $790	60.4	7.6	19.9
RTX 4070 Ti SUPER16 GB	about $900	68.7	7.6	24.1
RTX 309024 GB	about $1,500	95.7	6.4	27.3

Similar GPUs

Cards people weigh against the RX 7800 XT, each with the one reason it is worth a look. Speeds on Qwen3.5 9B.

17% faster, same 16 GBRTX 4070 Ti SUPERNVIDIA · 16 GB · Ada Lovelace

▲ 17% speedsame 16 GB$799rent $0.15/hr

8 GB more and 54% fasterRX 7900 XTXAMD · 24 GB · RDNA 3

▲ 54% speed▲ 8 GB$1,130

8 GB more and 63% fasterRTX 3090NVIDIA · 24 GB · Ampere

▲ 63% speed▲ 8 GB$1,499rent $0.19/hr

25% slower, same 16 GBA770 16GBIntel · 16 GB · Alchemist

▼ 25% speedsame 16 GB$349

4 GB more and 28% fasterRX 7900 XTAMD · 20 GB · RDNA 3

▲ 28% speed▲ 4 GB$899

More efficient per wattRTX 5090 Laptop GPUNVIDIA · 24 GB · Blackwell

▲ 56% speed▲ 8 GB

RX 7800 XT tokens per second by model size

Output speed depends on memory bandwidth (624 GB/s). Grey rows need more than 16 GB.

9BQwen3.5 9B · Q4_K_M · 6.6 GB
58.9tok/s
14BQwen3 14B · Q4_K_M · 11.9 GB
39.4tok/s
27–31BQwen3.8 27B · Q3_K_L · 15.4 GB tight · Q3_K_L
25.0tok/s
35B MoEQwen3.6 35B A3B · IQ3_S · 15.7 GB tight · IQ3_S
74.0tok/s
70BLlama 3.3 70B Instruct · not at 4-bit
needs 51.3 GB
120B MoEGPT OSS 120B · not at 4-bit
needs 70.8 GB

Estimated speeds: Q4_K_M, 4K context, one user. How we estimate

All 1057 models on the RX 7800 XT

Featured only

Best quant that fits, ordered by llmrun Score. Fit grades how well it runs here, S best. How ranking works

LLM models compatible with AMD Radeon RX 7800 XT — ranked by Score, recency and Fit
Model	Quant	VRAM	Speed	Context	Fit
Finance Llama3 8B8.0BChat Q4_K_M·69.5 t/s	Q4_K_M	6.2 GB39%	69.5 t/s	8K	S86, Runs great
Phi 1 51.4BChatCode Q4_K_M·398.3 t/s	Q4_K_M	0.9 GB6%	398.3 t/s	2K	S100, Runs great
DialoGPT Small176MChat Q4_K_M·3120.0 t/s	Q4_K_M	0.1 GB1%	3120.0 t/s	1K	S100, Runs great
Qwen3 4B Thinking 25074.0BChatFunctions Q4_K_M·129.1 t/s	Q4_K_M	4.2 GB26%	129.1 t/s	262K	S95, Runs great
OpenHermes 2.5 Mistral 7B7BChat Q4_K_M·78.5 t/s	Q4_K_M	6.7 GB42%	78.5 t/s	33K	S87, Runs great
Llama2 Kv Sharing3MChat Q4_K_M·1248.0 t/s	Q4_K_M	0.3 GB2%	1248.0 t/s	2K	S100, Runs great
Xglm 564M564MChat Q4_K_M·1011.9 t/s	Q4_K_M	0.4 GB2%	1011.9 t/s	2K	S100, Runs great
Qwen2 VL 2B Instruct2.2BVision Q4_K_M·222.9 t/s	Q4_K_M	2.1 GB13%	222.9 t/s	33K	S100, Runs great
Text2cypher Gemma 2 9B IT Finetuned 2024v19BChat Q4_K_M·63.0 t/s	Q4_K_M	8.6 GB54%	63.0 t/s	—	A84, Runs well
Llama 160M162MChat Q4_K_M·796.6 t/s	Q4_K_M	0.5 GB3%	796.6 t/s	2K	S100, Runs great
Opt 1.3B1.3BChat FP16·130.9 t/s	FP16	2.9 GB18%	130.9 t/s	2K	S95, Runs great
Codegen 350M Mono350MChatCode FP16·486.2 t/s	FP16	0.8 GB5%	486.2 t/s	2K	S100, Runs great
Pantheon Reasoning 27B27.8BChatRoleplayReasoning Q3_K_L·25.0 t/s	Q3_K_L	15.4 GB97%	25.0 t/s	262K	C39, Usable
Pythia 410M Deduped506MChat Q4_K_M·1134.5 t/s	Q4_K_M	0.3 GB2%	1134.5 t/s	2K	S100, Runs great
Openchat 3.5 12107.2BChat Q4_K_M·76.3 t/s	Q4_K_M	5.7 GB36%	76.3 t/s	8K	S87, Runs great

RX 7800 XT specs, power and PSU

Specs

Architecture: RDNA 3
VRAM: 16 GB GDDR6
Memory bandwidth: 624.0 GB/s
FP16 (dense): 74.65 TFLOPS
Stream processors: 3,840
TDP: 263 W
Released: 2023-09-06
MSRP: $499

RX 7800 XT FAQ

Is the RX 7800 XT still worth it in 2026?

At its MSRP of $499 you get 11.8 tok/s per $100 on Qwen3.5 9B, which ranks 1st of the 8 cards compared here; it is also the 8th fastest out of 17 cards with 16 GB. It runs 14B models well; 27–31B only just fits.

What is the largest model the RX 7800 XT can run?

Gemma 4 26B A4B IT (25.8B) is the largest at 4-bit or better: at Q4_K_S it uses 15.5 GB of 16 GB, and runs at about 77.5 tok/s. At 3-bit, a bigger model fits too: Gemma 2 27B IT (27.2B) at IQ3_M, 15.0 GB.

Can the RX 7800 XT run Qwen3.5 9B?

Yes. Qwen3.5 9B fits at Q4_K_M, using 6.6 GB of 16 GB, and it is the best model that runs well on this card.

Can the RX 7800 XT run 70B models?

No. Llama 3.3 70B Instruct needs 51.3 GB at Q4, more than the 16 GB on this card.

How many tokens per second does the RX 7800 XT give?

About 58.9 tok/s on Qwen3.5 9B at Q4_K_M, with the first token after 4.8 s on a 4K-token prompt.

What power supply does the RX 7800 XT need?

Plan a 550 W PSU (2× the 263 W TDP).

Is 16 GB enough for coding and agents?

Yes for coding: GPT OSS 20B, the best of the 2 coding models that fit, runs at about 85 tok/s. For agents, not yet: no agent-scored model fits in less than 96 GB.

Is renting cheaper than buying an RX 7800 XT?

An RTX 3090 (24 GB) rents from $0.19/hr. Renting costs as much as buying after ≈2,600 hours (≈1.8 years at 4 h a day).

Best coding LLMs 16 GB VRAM 24 GB VRAM GPUs with 16 GB or more RTX 5090 RTX 3090 Ti