RTX 5070 Ti 16GB vs RX 7800 XT 16GB for Local LLMs

The RTX 5070 Ti 16GB has about 44% more memory bandwidth (896 vs 624 GB/s). Batch-1 decode tracks bandwidth closely, so a model that fits both cards should decode roughly 44% faster on the RTX 5070 Ti 16GB. Both fit the same number of catalog models at Q4/8K (25 of 61; 16 vs 16 GB VRAM). MSRP is $749 for the RTX 5070 Ti 16GB vs $499 for the RX 7800 XT 16GB. MSRP is a launch list price, not live retail — Amazon prices move; click through for the current price. In the Q4/8K head-to-head below (44 shared models), the RTX 5070 Ti 16GB posts the higher tok/s in 44 rows vs 0. Methodology.

Spec comparison

	RTX 5070 Ti 16GB	RX 7800 XT 16GB
Vendor	NVIDIA	AMD
VRAM	16 GB	16 GB
Memory type	GDDR7	GDDR6
Memory bandwidth	896 GB/s	624 GB/s
TDP	300 W	263 W
MSRP (list)	$749	$499
Buy	Search Amazon (affiliate)	Search Amazon (affiliate)

MSRP is the launch list price, not live retail. Buy links are Amazon affiliate links — the price after you click is the live price.

Q4 / 8K head-to-head — top 15 of 44 shared models

Model	Params (B)	RTX 5070 Ti 16GB tok/s	RTX 5070 Ti 16GB fits	RX 7800 XT 16GB tok/s	RX 7800 XT 16GB fits	Winner
Qwen3-0.6B	0.8	712.7 est.	Yes	496.4 est.	Yes	RTX 5070 Ti 16GB
gemma-3-1b-it	1.0	570.2 est.	Yes	397.1 est.	Yes	RTX 5070 Ti 16GB
Llama-3.2-1B-Instruct	1.2	475.2 est.	Yes	330.9 est.	Yes	RTX 5070 Ti 16GB
Qwen3-30B-A3B	30.5	411.5 est.	No	286.6 est.	No	RTX 5070 Ti 16GB
Qwen3-Coder-30B-A3B-Instruct	30.5	411.5 est.	No	286.6 est.	No	RTX 5070 Ti 16GB
Qwen3-30B-A3B-Instruct-2507	30.5	411.5 est.	No	286.6 est.	No	RTX 5070 Ti 16GB
GLM-4.7-Flash	31.2	395.0 est.	No	275.1 est.	No	RTX 5070 Ti 16GB
Qwen3-1.7B	2.0	285.1 est.	Yes	198.5 est.	Yes	RTX 5070 Ti 16GB
gpt-oss-20b	21.5	189.5 measured	Yes	110.3 est.	Yes	RTX 5070 Ti 16GB
Llama-3.2-3B-Instruct	3.2	178.2 est.	Yes	124.1 est.	Yes	RTX 5070 Ti 16GB
Mistral-7B-Instruct-v0.3	7.2	160.2 measured	Yes	55.2 est.	Yes	RTX 5070 Ti 16GB
Phi-4-mini-instruct	3.8	150.0 est.	Yes	104.5 est.	Yes	RTX 5070 Ti 16GB
Phi-4-mini-reasoning	3.8	150.0 est.	Yes	104.5 est.	Yes	RTX 5070 Ti 16GB
gemma-3-4b-it	4.3	146.2 est.	Yes	101.8 est.	Yes	RTX 5070 Ti 16GB
Qwen3-4B-Instruct-2507	4.0	142.5 est.	Yes	99.3 est.	Yes	RTX 5070 Ti 16GB

est. = bandwidth-based estimate; measured = curated real benchmark that overrides the estimate. Fits = weights + KV(8K) + 1 GB overhead ≤ 95% of VRAM.

Fit coverage at Q4 / 8K

	RTX 5070 Ti 16GB	RX 7800 XT 16GB
Catalog models that fit	25 of 61	25 of 61
Largest exclusive fit	—	—

RTX 5070 Ti 16GB details → · RX 7800 XT 16GB details →