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Which bitcoin miners were actually good purchases

Every machine we hold enough price history for, run from the day it went on sale to today at our own sites, keeping every coin. Cashflow is what those coins are worth today less every dollar of electricity; the hardware is not subtracted, because a machine that is still running is not for sale. Covers hardware is how many times over that cashflow has paid for the box. 66 of 80 machines with two full years behind them have more than paid for themselves.

Machines with a full verdict

MachineBoughtHardwareCoins keptWorth todayElectricityElectricity per BTCCashflowCovers hardware
Bitmain Antminer R4Jul 2018 @ $244$9800.1569$12,029$860$5,482$11,16911.4x
Bitmain Antminer S9Jul 2018 @ $350$1,1130.2252$17,270$1,243$5,520$16,02714.4x
Innosilicon T2 Turbo+Nov 2018 @ $635$1,4690.5203$39,897$2,958$5,686$36,93925.2x
Canaan Avalon 841Sep 2018 @ $226$9580.2193$16,813$1,261$5,750$15,55316.2x
Canaan Avalon 821Aug 2018 @ $277$1,0210.2001$15,343$1,154$5,765$14,19013.9x
Innosilicon T2 TurboNov 2018 @ $521$1,3260.3893$29,853$2,260$5,805$27,59320.8x
Innosilicon T2 TerminatorOct 2018 @ $282$1,0280.2706$20,752$1,576$5,825$19,17618.7x
Bitmain Antminer S9iOct 2018 @ $229$9610.2191$16,801$1,301$5,940$15,49916.1x
Bitmain Antminer S9jNov 2018 @ $288$1,0350.2143$16,431$1,309$6,107$15,12314.6x
MicroBT Whatsminer M10sFeb 2019 @ $1,989$3,1610.7423$56,921$4,628$6,235$52,29316.5x
Canaan Avalon 921Dec 2018 @ $409$1,1860.2766$21,207$1,744$6,305$19,46416.4x
MicroBT Whatsminer M10Feb 2019 @ $1,193$2,1660.4444$34,077$2,813$6,330$31,26414.4x
Bitmain Antminer S9 HydroNov 2018 @ $343$1,6540.2699$20,698$1,714$6,350$18,98411.5x
Bitmain Antminer T9Jul 2018 @ $350$1,1130.2135$16,373$1,365$6,391$15,00813.5x
Bitmain Antminer S15Mar 2019 @ $1,084$2,0300.3664$28,094$2,389$6,520$25,70612.7x
Bitmain Antminer T9+Jul 2018 @ $294$1,0430.1749$13,414$1,174$6,709$12,24111.7x
Bitmain Antminer S11Feb 2019 @ $518$1,3230.2661$20,409$1,797$6,753$18,61114.1x
Innosilicon T3Apr 2019 @ $1,827$2,9590.5063$38,824$3,419$6,754$35,40512.0x
Bitmain Antminer T15May 2019 @ $937$1,8460.2574$19,739$1,915$7,439$17,8249.7x
Canaan Avalon 741Jul 2018 @ $205$9310.1135$8,700$861$7,589$7,8398.4x
Bitmain Antminer S17 ProOct 2019 @ $1,255$2,2440.4164$31,930$3,317$7,967$28,61312.8x
MicroBT Whatsminer M3Jul 2018 @ $336$1,0950.1683$12,908$1,379$8,191$11,52910.5x
Checkout test itemMar 2020 @ $23$230.0062$475$53$8,488$42318.4x
MicroBT Whatsminer M3XSep 2018 @ $219$9490.1639$12,568$1,395$8,514$11,17311.8x
Bitmain Antminer S17Oct 2019 @ $1,181$2,1510.4309$33,046$3,759$8,723$29,28713.6x
MicroBT Whatsminer M21sSep 2019 @ $1,467$2,5090.4575$35,080$4,263$9,319$30,81712.3x
Innosilicon T3+Oct 2019 @ $1,249$2,2360.4138$31,732$3,919$9,471$27,81312.4x
Bitmain Antminer T17Oct 2019 @ $960$1,8750.3178$24,372$3,032$9,538$21,34011.4x
Bitmain Antminer S19 ProAug 2020 @ $2,900$4,3000.5454$41,823$5,367$9,841$36,4568.5x
MicroBT Whatsminer M21Nov 2019 @ $702$1,5530.2277$17,462$2,282$10,020$15,1819.8x
Bitmain Antminer S17+Apr 2020 @ $1,280$2,2750.4304$33,005$4,503$10,462$28,50212.5x
MicroBT Whatsminer M20sFeb 2020 @ $1,214$2,1930.4438$34,035$4,749$10,700$29,28613.4x
Bitmain Antminer S19Aug 2020 @ $2,504$3,8050.4664$35,765$5,040$10,807$30,7258.1x
Bitmain Antminer S9 SENov 2019 @ $136$8450.0990$7,588$1,112$11,238$6,4767.7x
Bitmain Antminer S17eApr 2020 @ $1,089$2,0360.3688$28,283$4,177$11,324$24,10611.8x
Bitmain Antminer T19Jul 2020 @ $1,647$2,7340.4187$32,109$4,910$11,727$27,19810.0x
Bitmain Antminer T17+Apr 2020 @ $1,123$2,0790.3708$28,434$4,366$11,773$24,06811.6x
MicroBT Whatsminer M31sJun 2020 @ $1,373$2,3910.3935$30,173$4,647$11,809$25,52610.7x
Canaan Avalon 1066Mar 2020 @ $753$1,6160.2805$21,511$3,336$11,892$18,17511.3x
Canaan Avalon 1047Mar 2020 @ $589$1,4110.2054$15,748$2,448$11,920$13,3009.4x
Bitmain Antminer T17eApr 2020 @ $914$1,8180.2961$22,703$3,650$12,328$19,05310.5x
Canaan Avalon 1166 ProNov 2020 @ $2,978$4,3980.3471$26,620$4,510$12,993$22,1095.0x
MicroBT Whatsminer M31s+Nov 2020 @ $2,942$4,3530.3428$26,289$4,455$12,995$21,8345.0x
MicroBT Whatsminer M32Jul 2020 @ $1,228$2,2100.3011$23,088$4,037$13,409$19,0518.6x
Canaan Avalon 1146 ProNov 2020 @ $1,941$3,1010.2663$20,421$3,789$14,228$16,6325.4x
Bitmain Antminer S19jJul 2021 @ $7,947$10,6090.2903$22,264$4,185$14,413$18,0801.7x
Canaan Avalon 1246Jun 2021 @ $3,843$5,4790.2824$21,656$4,102$14,524$17,5543.2x
MicroBT Whatsminer M32sApr 2021 @ $4,163$5,8790.2272$17,424$3,552$15,634$13,8722.4x
Canaan Avalon 1126 ProSep 2021 @ $4,587$6,4090.1828$14,017$3,350$18,324$10,6681.7x
Bitmain Antminer S19 Pro+ HydSep 2022 @ $5,184$7,7050.2938$22,531$5,979$20,347$16,5532.2x
Canaan Avalon A1366Jan 2023 @ $1,970$3,1380.1503$11,524$3,230$21,494$8,2942.6x
Bitmain Antminer T19 HydDec 2022 @ $2,214$3,9930.1970$15,109$5,005$25,400$10,1052.5x
MicroBT Whatsminer M33s++Jan 2023 @ $3,666$5,2580.2797$21,452$7,215$25,793$14,2362.7x
Bitmain Antminer S19 XPSep 2023 @ $2,870$4,2630.0913$7,002$2,367$25,928$4,6341.1x
Canaan Avalon A1346Feb 2023 @ $1,691$2,7890.1216$9,324$3,230$26,562$6,0942.2x
Bitmain Antminer S19 XP HydOct 2023 @ $5,505$8,1060.1679$12,872$4,488$26,739$8,3831.0x
Bitaxe Gamma 601Aug 2024 @ $21$7010.0004$28$10$26,918$180.0x
Bitmain Antminer S21Feb 2024 @ $4,032$5,7150.0914$7,010$2,514$27,499$4,4960.8x
Bitmain Antminer S19K ProOct 2023 @ $1,235$2,2190.0677$5,194$1,946$28,732$3,2481.5x
Bitmain Antminer S21 ProOct 2024 @ $4,682$6,5280.0690$5,290$2,015$29,210$3,2750.5x
Bitmain Antminer S21 HydApr 2024 @ $5,454$8,0430.1135$8,702$3,363$29,636$5,3390.7x
Bitmain Antminer T21Mar 2024 @ $2,833$4,2160.0782$6,000$2,494$31,872$3,5060.8x
MicroBT Whatsminer M53sOct 2023 @ $2,777$4,1460.1665$12,768$5,433$32,627$7,3361.8x
MicroBT Whatsminer M50sOct 2023 @ $2,101$3,3010.0814$6,241$2,667$32,775$3,5731.1x
Bitmain Antminer S19j ProAug 2023 @ $1,239$2,2240.0756$5,800$2,516$33,264$3,2841.5x
Canaan Avalon A1466Feb 2024 @ $2,009$3,1860.0701$5,376$2,339$33,358$3,0381.0x
MicroBT Whatsminer M60sJun 2024 @ $3,494$5,0430.0644$4,938$2,186$33,953$2,7510.6x
Bitmain Antminer S19j Pro+Oct 2023 @ $1,310$2,3130.0759$5,822$2,640$34,776$3,1811.4x
MicroBT Whatsminer M50Oct 2023 @ $1,437$2,4710.0763$5,851$2,665$34,925$3,1861.3x
MicroBT Whatsminer M60Jun 2024 @ $3,049$4,4860.0618$4,736$2,234$36,175$2,5020.6x
MicroBT Whatsminer M53Oct 2023 @ $2,456$3,7450.1473$11,295$5,360$36,391$5,9351.6x
MicroBT Whatsminer M30s++Oct 2023 @ $1,105$2,0560.0742$5,693$2,795$37,650$2,8981.4x
MicroBT Whatsminer M30s+Oct 2023 @ $788$1,6600.0609$4,668$2,422$39,791$2,2461.4x
MicroBT Whatsminer M63Oct 2024 @ $6,238$9,0230.1057$8,103$4,206$39,809$3,8960.4x
Bitmain Antminer S19 Pro HydNov 2023 @ $1,565$3,1810.1102$8,453$4,417$40,072$4,0361.3x
Bitmain Antminer S19j XPOct 2024 @ $1,570$2,6380.0423$3,242$1,773$41,945$1,4690.6x
Bitaxe Supra Hex 701Oct 2024 @ $50$7380.0011$88$48$42,102$400.1x
Lucky Miner LV07Sep 2024 @ $3$6790.0003$22$14$48,133$80.0x
MicroBT Whatsminer M66SJun 2024 @ $5,702$7,2370.1374$10,539$7,005$50,970$3,5340.5x
MicroBT Whatsminer M66sJun 2024 @ $5,892$7,4370.1420$10,890$7,239$50,970$3,6520.5x

Too early to say

Less than two years of running. A machine that has not had time to pay back is not a bad machine, it is an unfinished one.

MachineBoughtHardwareCoins keptElectricity per BTCCashflow so farCovers hardware
Bitmain Antminer S19 Pro++Nov 2024 @ $446$1,2330.0329$51,576$8260.7x
Bitmain Antminer S21 XP HydNov 2024 @ $11,969$16,1860.1234$24,697$6,4150.4x
Bitdeer SealMiner A2Dec 2024 @ $3,844$5,4800.0558$33,196$2,4280.4x
Bitdeer SealMiner A2 HydDec 2024 @ $7,586$10,7080.1092$34,154$4,6430.4x
Lucky Miner LV08Dec 2024 @ $16$6950.0011$53,772$250.0x
Bitmain Antminer S21 ImmersionJan 2025 @ $3,696$5,1310.0707$57,612$1,3490.3x
Bitaxe TouchJan 2025 @ $28$7100.0004$27,858$190.0x
Bitmain Antminer S21 XPJan 2025 @ $6,691$9,0390.0625$27,458$3,0770.3x
MicroBT Whatsminer M30sJun 2024 @ $479$1,2740.0228$67,503$2090.2x
Canaan Avalon A1366IDec 2023 @ $1,346$2,6630.0645$54,025$1,4610.6x
Innosilicon T2 TurboHF+Aug 2021 @ $927$1,8340.0610$19,716$3,4721.9x
Bitmain Antminer S19 XP Hyd 3UFeb 2025 @ $6,287$9,6840.1135$43,215$3,8000.4x
Bitmain Antminer S19e XP HydFeb 2025 @ $2,609$4,4860.0544$46,865$1,6220.4x
Canaan Avalon QMar 2025 @ $1,627$2,7090.0191$38,392$7290.3x
Bitmain Antminer S21 XP+ HydMar 2025 @ $8,256$11,5450.1010$23,587$5,3630.5x
MicroBT Whatsminer M66S++Mar 2025 @ $5,986$7,5350.0988$49,267$2,7090.4x
Canaan Avalon A1566IMar 2025 @ $4,283$5,7470.0707$57,443$1,3600.2x
Bitmain Antminer S21+Apr 2025 @ $3,243$4,7290.0431$34,364$1,8220.4x
Bitmain Antminer S21+ HydApr 2025 @ $5,848$8,5350.0780$32,326$3,4590.4x
MicroBT Whatsminer M50s++May 2025 @ $1,579$2,6490.0292$46,245$8900.3x
Canaan Avalon Mini 3May 2025 @ $860$1,7500.0068$44,873$2170.1x
Canaan Avalon Nano 3SMay 2025 @ $314$1,0680.0011$49,080$300.0x
Bitmain Antminer S23 HydMay 2025 @ $15,590$20,7130.1044$20,727$5,8430.3x
Bitmain Antminer S23May 2025 @ $7,956$10,6200.0533$23,159$2,8520.3x
Bitmain Antminer V9Aug 2018 @ $96$7950.0220$16,046$1,3361.7x
MicroBT Whatsminer M61Jul 2025 @ $2,424$3,7050.0331$40,460$1,2000.3x
MicroBT Whatsminer M61SJul 2025 @ $2,772$4,1400.0347$39,424$1,2940.3x
Bitmain Antminer S7-LNJul 2018 @ $76$7700.0140$16,505$8401.1x
MicroBT Whatsminer M61S+Aug 2025 @ $3,240$4,7250.0346$36,366$1,3950.3x
MicroBT Whatsminer M63S+Aug 2025 @ $6,332$9,1400.0663$37,344$2,6080.3x
Bitmain Antminer S7Jul 2018 @ $133$8410.0200$18,446$1,1661.4x
MicroBT Whatsminer M63sOct 2025 @ $5,030$7,5130.0532$39,530$1,9750.3x
Bitmain Antminer S23 Hyd 3UNov 2025 @ $31,973$41,7910.1408$20,513$7,9110.2x
Canaan Avalon A15 ProDec 2025 @ $2,875$4,2690.0236$34,745$9900.2x
Bitmain Antminer S23e Hyd 2UJan 2026 @ $20,981$28,0510.0902$21,360$4,9910.2x
Bitdeer SealMiner A3 Pro HydApr 2026 @ $10,140$13,9000.0508$26,328$2,5590.2x
Bitdeer SealMiner A3 HydApr 2026 @ $6,825$9,7560.0382$28,590$1,8350.2x
Bitdeer SealMiner A2 Pro AirApr 2026 @ $3,159$4,6240.0195$30,570$8970.2x
MicroBT Whatsminer M63S++Apr 2026 @ $4,202$6,4780.0371$31,694$1,6680.3x
Canaan Avalon Nano 3Nov 2025 @ $171$8890.0003$75,657$00.0x
Fluminer T3Apr 2026 @ $1,505$2,5560.0075$30,308$3490.1x
Bitmain Antminer S21e XP Hyd 3UApr 2026 @ $10,809$15,3360.0598$27,105$2,9660.2x
Bitmain Antminer S19 XP+ HydApr 2026 @ $937$2,3960.0204$40,317$7410.3x
Bitmain Antminer S21e HydApr 2026 @ $1,647$3,2840.0229$36,047$9290.3x
MicroBT Whatsminer M73SMay 2026 @ $6,941$9,3510.0354$26,580$1,7730.2x
MicroBT Whatsminer M70May 2026 @ $2,584$3,9050.0138$29,614$6480.2x
MicroBT Whatsminer M73May 2026 @ $5,565$7,6310.0303$28,539$1,4580.2x
MicroBT Whatsminer M65S+May 2026 @ $3,911$6,1140.0249$35,577$1,0220.2x
Bitmain Antminer S21j XP HydJun 2026 @ $6,767$9,6840.0251$25,146$1,2930.1x
Canaan Avalon A15XPJun 2026 @ $1,207$2,1840.0105$36,094$4270.2x
Canaan Avalon A15 Pro+Jun 2026 @ $2,514$3,8170.0118$31,463$5340.1x
MicroBT Whatsminer M74S+Jun 2026 @ $5,161$7,1260.0161$24,375$8410.1x
MicroBT Whatsminer M74SJun 2026 @ $4,111$5,8130.0151$26,406$7600.1x
MicroBT Whatsminer M7DSJun 2026 @ $7,358$9,8730.0314$27,422$1,5460.2x
MicroBT Whatsminer M7DJun 2026 @ $6,345$8,6060.0317$28,437$1,5280.2x
MicroBT Whatsminer M60S++Jun 2026 @ $2,276$3,5210.0112$30,468$5190.2x
MicroBT Whatsminer M60S+Jun 2026 @ $1,844$2,9800.0099$34,531$4160.1x
MicroBT Whatsminer M65SJun 2026 @ $3,108$5,1100.0194$38,593$7380.1x
MicroBT Whatsminer M66S+Jun 2026 @ $2,508$3,8840.0206$53,124$4860.1x
MicroBT Whatsminer M66Jun 2026 @ $1,826$3,1670.0180$62,182$2620.1x
MicroBT Whatsminer M70SJul 2026 @ $3,385$4,9070.0117$27,453$5740.1x
Canaan Avalon A15Jul 2026 @ $1,052$1,9900.0087$38,181$3340.2x

Bitcoin machines only: we do not hold daily price history for other chains, so scoring their hardware would be guesswork.