Best GPU for Local AI Agents

Written by Jakub Rusinowski · Last updated July 21, 2026

Ranked for autonomous agents and tool use: Multi-step autonomous loops where the model calls tools, reads results and decides what to do next.

Best overall: AMD Radeon RX 7900 XTX

24 GB VRAM at 960 GB/s. It runs 17 of the models that qualify for this workload; the strongest is Ternary Bonsai 27B at an estimated 38.3 tokens/sec.

The picks

	GPU	VRAM	MSRP	Models that fit	Best model it runs	Est. speed
Best overall	AMD Radeon RX 7900 XTX	24 GB	$999	17	Ternary Bonsai 27B	~38.3 tok/s
Best value	AMD Radeon RX 7900 XT	20 GB	$899	9	Ternary Bonsai 27B	~32.4 tok/s
Budget pick	Intel Arc B570	10 GB	$219	4	GLM-6 9B	~42.7 tok/s
Most memory	NVIDIA DGX Spark	128 GB	$4,699	24	Ternary Bonsai 27B	~11.6 tok/s

GPU	Score	VRAM	MSRP	Models fit	Est. speed	Tok/s per watt	Cost per model
AMD Radeon RX 7900 XTX	78.7	24 GB	$999	17	~38.3	0.11	$59
NVIDIA GeForce RTX 4090	78	24 GB	$1,599	17	~40.1	0.09	$94
NVIDIA GeForce RTX 5090	76.9	32 GB	$1,999	17	~66.6	0.12	$118
NVIDIA GeForce RTX 3090	76	24 GB	$1,499	17	~37.4	0.11	$88
NVIDIA RTX 6000 Ada Generation	74.7	48 GB	$6,799	18	~38.3	0.13	$378
AMD Radeon RX 7900 XT	73.1	20 GB	$899	9	~32.4	0.1	$100
NVIDIA L40S	70.4	48 GB	$7,499	18	~34.8	0.1	$417
Intel Arc B570	54.8	10 GB	$219	4	~42.7	0.28	$55
Intel Arc B580	50.9	12 GB	$249	5	~50.3	0.26	$50
NVIDIA GeForce RTX 5060	49.5	8 GB	$299	3	~49.5	0.34	$100
AMD Ryzen AI Max+ 395	47.4	96 GB	$1,999	24	~10.9	0.09	$83
NVIDIA GeForce RTX 3060 (12GB)	47.1	12 GB	$329	5	~40.6	0.24	$66

GPUs are scored on four axes: capability (45%), speed (30%), value (20%) and efficiency (5%), each normalised across the whole ranking.
Capability means the intrinsic strength of the best model the card can hold — not how many models fit, and not how fast it streams a small one.
Speed is capped at 40 tok/s: past that, more throughput does not change how the model feels to use.
Apple Silicon is excluded from this ranking. Those entries price a whole computer and rate a chip's package power, so on price-per-capability and performance-per-watt they would beat every add-in card by construction. Apple hardware is covered on the macOS platform page instead.
Reliable structured tool calls are a hard gate here, not a bonus: a model with no tool-use tag is excluded regardless of score. Coding weight is high (40%) because tool arguments are effectively code. Context needs match RAG — an agent loop accumulates every observation it has ever seen.

The AMD Radeon RX 7900 XTX — 24 GB of VRAM runs 17 qualifying models, the strongest being Bonsai 27B.

The Intel Arc B570 at $219, which runs 4 qualifying models.

8 GB is the entry point at which a model for this workload will run at all. More memory buys a stronger model, not just a faster one.