GeForce RTX 3090 on Zephyr — Mining Profit, Solo Odds & Cost of Production

2.00 KH/s · RandomX · network 37.98 MH/s. A GeForce RTX 3090 solo mining Zephyr (ZEPH) has about 14 blocks per year, i.e. an expected block roughly every 26 days for the full 3.9500 ZEPH (≈ 1 USD) reward.

GeForce RTX 3090 on Zephyr — Mining Truth Benchmark & Specifications

Consolidated PoW oracle metrics for operating a GeForce RTX 3090 on Zephyr (ZEPH) at live network difficulty and benchmark industrial electricity (0.069 USD/kWh):

Can you solo mine Zephyr with a GeForce RTX 3090?

Yes — a GeForce RTX 3090 (2.00 KH/s) can solo mine Zephyr (ZEPH) via a solo pool. At Zephyr's 37.98 MH/s RandomX network that is about 14 blocks per year — expected one block roughly every 26 days, for the full 3.9500 ZEPH (≈ 1 USD) block. BackPoW computes this from live network difficulty using a Poisson block-discovery model. Realistically this is genuinely worth a patient solo run.

Hardware Tier & Ecosystem Ranking on Zephyr

The GeForce RTX 3090 is categorized in the Mid-Range Workhorse Tier (Middle quartile hashrate offering solid pool mining throughput with moderate solo variance.). Among all 8 tracked models on Zephyr, it ranks #6 in electrical efficiency (6.90 H/W) and #6 in raw hashrate (2.00 KH/s).

Electricity Operating Costs & Breakeven

Running a GeForce RTX 3090 (290 W) pulls about 6.96 kWh per day (211.8 kWh per month). At the standard rate of 0.069 USD/kWh, electricity costs roughly 0.48 USD per day (14.62 USD/month or 175 USD/year). Statistically that year returns 13.85 blocks, worth about $19.54 — you would burn roughly 9x more in electricity than that reward is worth.

The operational breakeven threshold is 0.008 USD/kWh. Expected net operating margin at benchmark tariffs:

• At 0.040 USD/kWh (Hydro / Renewable): -0.22 USD / day
• At 0.069 USD/kWh (Standard Industrial): -0.43 USD / day
• At 0.120 USD/kWh (Residential Grid): -0.78 USD / day

Break-even Coin Price Target: For this hardware to break even on electricity, Zephyr must trade at or above 3.21 USD at standard industrial power (0.069 USD/kWh), or 5.58 USD at residential power (0.120 USD/kWh).

Bankroll & Variance Risk Simulator

Solo mining block discovery follows a memoryless Poisson distribution. While the average wait is 26 days, real-world dispersion ranges across 5% and 50% quantiles:

• Lucky streak (5% Odds): Block within ~1 days (1-in-20 fastest discovery, power cost: ~1 USD)
• Median expectation (50% Odds): Block within ~18 days (Nominal median, power cost: ~9 USD)
• Bad luck streak (5% Odds): Can stretch up to ~79 days (1-in-20 extended dry spell, power cost: ~38 USD)

High Variance Alert: In a 1-in-20 severe drought (~79 days), cumulative electricity burned (~38 USD) will exceed the block reward value (1 USD). Pool mining is recommended for risk-averse operators.

GeForce RTX 3090 Price & Estimated ROI

Current market price: $580–$720 (estimated market price, median $650) (Hardware price estimated). Mined against its most profitable coin instead of solo, it would pay itself back in about 300 days.

How other hardware compares on Zephyr

Devices in the same hashrate class, solo mining Zephyr at today's difficulty:

How the odds have moved

Zephyr's network hashrate fell 18% since 2026-09-08, from 46.29 MH/s to 37.98 MH/s — so the same rig is now 18% more likely to find a block.

Where to point a GeForce RTX 3090 at Zephyr

Solo mining still runs through a solo pool: it handles the block template and pays the full reward to whoever finds the block. BackPoW tracks 15 solo pools for Zephyr with their stratum endpoints, fees, and pool hashrates — see Zephyr solo mining pools:

• herominers.com (Fee: 0.9% · Hashrate: 21.28 MH/s)
• miningocean.org (Fee: 0.9% · Hashrate: 9.44 MH/s)
• hashvault.pro (Fee: 0.9% · Hashrate: 895.59 KH/s)

How the odds are calculated

Solo mining is memoryless: every hash is an independent lottery ticket, so the wait for a block follows an exponential distribution rather than a fixed schedule. On average a block takes T = network_hashrate ÷ your_hashrate × block_time, and the probability of finding at least one within a window t is P = 1 − e^(−t/T). BackPoW uses this Poisson relation instead of a naive linear estimate. For this pair: daily chance 3.72%, yearly chance 100.00%.

Frequently Asked Questions: GeForce RTX 3090 on Zephyr

Can you solo mine Zephyr with a GeForce RTX 3090?

Yes — a GeForce RTX 3090 (2.00 KH/s) can solo mine Zephyr (ZEPH) via a solo pool. At Zephyr's 37.98 MH/s RandomX network that is about 14 blocks per year — expected one block roughly every 26 days, for the full 3.9500 ZEPH (≈ 1 USD) block. BackPoW computes this from live network difficulty using a Poisson block-discovery model.

Is RandomX ASIC-resistant, and where does the GeForce RTX 3090 stand?

RandomX is a memory-hard CPU proof-of-work algorithm. The GeForce RTX 3090 ranks #6 of 8 CPUs on Zephyr. It operates in the Mid-Range Tier (middle quartile), offering solid pool mining throughput with moderate solo variance.

What is the operating power cost and breakeven electricity rate for a GeForce RTX 3090 on Zephyr?

At 290 W, operating a GeForce RTX 3090 consumes 6.96 kWh/day (211.8 kWh/month). At standard electricity (0.069 USD/kWh), the power bill is 0.48 USD/day (14.62 USD/month). The operational breakeven threshold is 0.008 USD/kWh.

What happens if my GeForce RTX 3090 encounters a severe dry spell on Zephyr?

Block discovery is an independent Poisson process with no memory. In a 1-in-20 bad luck drought (5% worst luck), finding a block can stretch up to 79 days, accumulating roughly 38 USD in power costs.

Alternative Mining Options for GeForce RTX 3090

Comparing solo odds, jackpot block value, and daily pool revenue across other coins minable with this rig: