ModelDock
Default path
Qwen3.8 27B under local, single-user, single-stream use with stable MTP/speculative draft treated as the normal path. SGLang and DFlash/DFlash2 stay outside the default median.
ModelDock research
Benchmark Data
Ordinary-lane hardware · source medians · adjustable economicsYour workload
Reading is the model taking in your prompt, files, and chat history. Writing is the answer it generates. Long documents and coding sessions are usually read-heavy, so the default starts at 75% reading / 25% writing. Stable MTP is treated as normal, not a separate scenario.
Model Quantization
2× GPU build note Dual-card rigs require chassis clearance and slot spacing for wide cards, stable high-headroom power delivery and airflow, plus more involved installation and multi-GPU scheduling than a single-card node.
| Hardware | Capability | Economics for your workload | Evidence | Market | ||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
capability efficiency cost ~ bandwidth-scaled rate estimate or incomplete evidence
Assumptions
75% reading / 25% writing · 24 active h/day
Whole-node power · Qwen3.8 27B · ordinary local use
Transparent calculation
total GPU rig = GPU price + $1,000 hostlocal $/MM = (energy + hardware allocation) / daily capacitybreak-even days = total rig / (API value/day − energy/day)Sequential single-user model: reading time + writing time; no concurrency or overlap assumed.
Evidence data
Open the source spread behind published hardware records.
Methodology
The conditions behind the table.
Performance uses a source-visible MTP-ready median. The economics below are adjustable because they describe your usage—not the benchmark run.
Per-metric median
Reading (prefill) and writing (decode) are medianed independently. Source conditions—quant, context, runtime, topology, and draft depth—remain visible after clicking Median.
Evidence labels
Median links to the source spread. ~ Rate estimate is bandwidth-scaled from measured and reported reading and writing data; it remains separate from source medians. Pending means no ordinary-lane source metric has been collected yet.
Pricing basis
Discrete GPU totals use the dated GPU price plus a $1,000 host/platform allowance. Break-even divides total rig price by equivalent API value per day less direct energy cost; it is not an investment-return guarantee.