Payback

US prices, Sep 2026. Power is 18.34¢/kWh, EIA June 2026. ROI/yr is at 20% duty. Color is a log scale. A stronger wash is an outlier.

Setup	Decode · tok/s	US $	5%	20%	70%	ROI/yr
2× Dual · GLM 5.3 Flash	60.4	$9,998	266 yr	66 yr	19 yr	1.5%
1× Solo · DGX Spark	—	$4,999	—	No decode	—	—
3× Triple · DGX Spark	—	$14,997	—	No decode	—	—
4× Quad · DGX Spark	—	$19,996	—	No decode	—	—
6× 6+ · DGX Spark	—	$29,994	—	No decode	—	—

Setup	Decode · tok/s	US $	5%	20%	70%	ROI/yr
Qwen3.5 2B · RTX 5090 32GB	351	$4,639	12 yr	2.9 yr	10 mo	34%
Swift 1.5 Qwen3.8 Flash-Next · RTX 4090 24GB	220	$4,495	19 yr	4.7 yr	16 mo	21%
Qwen3.6-35B-A3B · M4 Pro	85.5	$2,199	21 yr	5.3 yr	18 mo	19%
Qwen3.5-4B · M4 Pro	82.8	$2,199	22 yr	5.5 yr	19 mo	18%
Gemma-4 26B-A4B-it · RTX 5090 32GB	173	$4,639	27 yr	6.7 yr	23 mo	15%
Qwen3.8-Flash-Next · RTX 5090 32GB	142	$4,639	35 yr	8.7 yr	2.5 yr	11%
Qwen3.8-Flash-Next · M5 Max	126.5	$5,399	35 yr	8.8 yr	2.5 yr	11%
Qwen3.5-9B · M4 Pro	49.3	$2,199	38 yr	9.4 yr	2.7 yr	11%
Qwen3-8B · M4 Pro	48.3	$2,199	38 yr	9.6 yr	2.7 yr	10%
Qwen3.8-27B · RTX 5060 Ti 16GB	23	$614	42 yr	11 yr	3.0 yr	9.5%
Qwen3.8-27B · DGX Spark	102.9	$4,999	45 yr	11 yr	3.2 yr	8.8%
Qwen3.8-Flash-Next · RTX 5090 32GB	104	$4,639	55 yr	14 yr	3.9 yr	7.3%
Qwen3.8-Flash-Next · DGX Spark	79.5	$4,999	62 yr	15 yr	4.4 yr	6.5%
Qwen3.8-27B · RTX 5060 Ti 16GB	19	$614	65 yr	16 yr	4.6 yr	6.2%
Qwen3.8-Flash-Next · DGX Spark	74.8	$4,999	67 yr	17 yr	4.8 yr	6.0%
Qwen3.8-27B · DGX Spark	72	$4,999	70 yr	17 yr	5.0 yr	5.7%
AliceAI-Foundation-80B-A3B · M5 Max 128GB	65	$5,399	71 yr	18 yr	5.0 yr	5.7%
Qwen3.8-Flash-Next · RTX 5090 32GB	80.9	$4,639	83 yr	21 yr	5.9 yr	4.8%
Qwen3.6-35B-A3B · 2× DGX Spark	94.4	$9,998	124 yr	31 yr	8.9 yr	3.2%
Nex-N2.5-mini · RTX 5060 Ti 16GB	14	$614	192 yr	48 yr	14 yr	2.1%
GLM 5.3 Flash · 2× DGX Spark	60.4	$9,998	266 yr	66 yr	19 yr	1.5%
Qwen3.8-27B · RTX 4090 24GB	40.7	$4,495	296 yr	74 yr	21 yr	1.4%
GLM 5.3 Flash · 2x DGX Spark	55.6	$9,998	317 yr	79 yr	23 yr	1.3%
Qwen3.8-Flash-Next · 2× DGX Spark	45	$9,998	549 yr	137 yr	39 yr	0.7%
GLM 5.3 Flash · DGX Spark	18.6	$4,999	1206 yr	301 yr	86 yr	0.3%
Qwen3.8-27B TurboFCFusion · RTX 5060 Ti 16GB	10	$614	Never	Never	Never	-1.2%
GLM 5.3 Flash · 2x DGX Spark	15	$9,998	Never	Never	Never	-0.8%
GLM 5.3 · 4x DGX Spark	30	$19,996	Never	Never	Never	-0.8%
Empero Qwen3.8-35B-A3B · RTX 3060 12GB	50	—	—	No US price	—	—
Ornith · GTX 1660 SUPER 6GB	40	—	—	No US price	—	—
MiMo-V2.6-Distill-Qwen-9B · RTX 5060 8GB	47	—	—	No US price	—	—
Qwen3.8-Flash-Next · RTX 3060 12GB	27.7	—	—	No US price	—	—
Qwen3.8-Flash-Next · RTX 3090 24GB	72	—	—	No US price	—	—
Qwen3.6-35B-A3B · M1 Max 32GB	37	—	—	No US price	—	—
Qwen3.8-27B · M5 Pro 64GB	89.9	—	—	No US price	—	—
Qwen3.8-27B · M6 mini 32GB	61.9	—	—	No US price	—	—
Qwen3.8-27B · RTX A5000	177.6	—	—	No US price	—	—
Qwen3.8-27B · RTX A5000	139.3	—	—	No US price	—	—
Qwen3.8-Flash-Next · RTX 3090 24GB	100.6	—	—	No US price	—	—