The hardware roster · one identity
the darkroom's box — two RTX 3090s
a consumer tower running two renewed RTX 3090s on an ordinary two-slot board, with desktop memory and a desktop power supply; the box the price series prices, and it is never off
It holds — RTX 3090 (24 GB).
Power, temperature, and what it costs
Sorted by model, then by power cap ascending — alphabetical and numeric, never by value. Every condition the page states is printed; a condition it does not state reads not stated, which is a third thing and not an uncapped card. The columns a narrow screen cannot hold are printed under the row rather than scrolled to.
| value | what was measured | model | power cap | runtime | measurement window |
|---|---|---|---|---|---|
| 233 W average | draw at the wall | not stated | 280 W caps for six hours, idle the other eighteen | not stated | not stated |
| not stated280 W caps for six hours, idle the other eighteennot statednot stated | |||||
| not statednot statednot statednot statedthe page labels this row (derived) in the cell itself: an estimate made in good faith from the caps, a ballpark, not a readinghome-inference-and-diffusion-rig-cost · what-the-rig-costs-to-run · carried by hand, proved against that page’s own row · identity from the same section | |||||
| 91 W | draw at the wall | not stated | each card at 280 W | not stated | measured, the day's median, 9 September 2026 |
| not statedeach card at 280 Wnot statedmeasured, the day's median, 9 September 2026 | |||||
| not statednot statednot statednot statedhome-inference-and-diffusion-rig-cost · what-the-rig-costs-to-run · carried by hand, proved against that page’s own row · identity from the same section | |||||
| 660 W | draw at the wall | not stated | both cards at their caps all day | not stated | not stated |
| not statedboth cards at their caps all daynot statednot stated | |||||
| not statednot statednot statednot statedthe page labels this row (derived) in the cell itself: an estimate made in good faith from the caps, a ballpark, not a readinghome-inference-and-diffusion-rig-cost · what-the-rig-costs-to-run · carried by hand, proved against that page’s own row · identity from the same section | |||||
Everything else this shelf measured for it
1 row — same rule as above.
| value | what was measured | model | power cap | runtime | measurement window |
|---|---|---|---|---|---|
| 2.18 kWh · $0.40 | a day, and a month, at 18.34 ¢/kWh | not stated | each card at 280 W | not stated | measured, the day's median, 9 September 2026 |
| not statedeach card at 280 Wnot statedmeasured, the day's median, 9 September 2026 | |||||
| not statednot statednot statednot statedhome-inference-and-diffusion-rig-cost · what-the-rig-costs-to-run · carried by hand, proved against that page’s own row · identity from the same section | |||||
Where it appears
Every released exhibit that names this identity, in the shelf’s own order. A count beside an exhibit is how many of its figures are carried above — and it links them, because a number with no way back to what it counts is the thing this shelf exists against.
- The cost to purchase and run a very capable home AI rig — 4 figures on this page
How this one is named here
The canonical name above is the full product name. Everything below is a spelling a published page or kit has actually used for it, kept so a reader who searches an older page’s words lands on this row. The set is closed and historical: no page cut after 2026-09-17 writes a memory class where it can write a card.
- This box is never off
- Two EVGA GeForce RTX 3090 XC3 Ultras, renewed, 24 GB of graphics memory each, 48 GB between them, on a typical consumer board with two slots, desktop memory and a desktop power supply
- the darkroom's box