Solo Mining Flux: ZelHash GPU Block Odds Calculator 2026

You want to start solo mining but every calculator online just shows pool earnings? Yeah, I had the same problem when I first looked into mining Flux.

The cool part is: Flux actually runs a unique parallel node system that makes it more interesting than most GPU coins. But here’s the reality check — calculating your actual chances of hitting a solo block isn’t as simple as plugging numbers into a pool calculator.

I spent three weeks testing different GPUs on Flux’s ZelHash algorithm before I really understood the math. What I wish I knew earlier: Your hashrate matters way less than understanding network difficulty and block time variance. Like, way less.

Why Flux Solo Mining Isn’t Like Other GPU Coins

Most GPU mining guides treat every coin the same. Hash the algorithm, get paid, done.

Flux breaks that pattern because it rewards nodes AND miners. The network runs on FluxNodes — basically servers that power decentralized cloud infrastructure. Miners secure the blockchain, node operators provide computing power. Both get paid from block rewards.

For solo miners, this means something important: Block rewards are split. Currently, each Flux block pays 37.5 FLUX total, but that’s divided between miners and nodes. Miners get 50% of that, so 18.75 FLUX per block as of 2026. The rest goes to FluxNode operators.

Block time sits at roughly 2 minutes. That’s 720 blocks per day.

Current Flux price: $0.0204

Understanding ZelHash Algorithm GPU Performance

ZelHash (sometimes called Equihash 125,4) isn’t the same as standard Equihash. It uses less memory but demands more compute power. What this means for your GPU choice: Memory amount matters less than core speed.

My RTX 3070 pulls about 65 MH/s on ZelHash at 120W. An RX 6700 XT does roughly 55 MH/s at similar power. Older cards like the GTX 1070 Ti manage around 35 MH/s.

Network hashrate fluctuates between 40-60 GH/s depending on profitability swings. That’s giga-hashes — so 1,000,000 MH/s total across all miners worldwide.

Here’s the math that matters for solo mining:

• Network hashrate: ~50 GH/s (average)
• Your single RTX 3070: 65 MH/s
• Your percentage of network: 0.00013%
• Blocks per day: 720
• Your expected blocks per day: 0.000936 blocks

That translates to roughly one block every 1,068 days — almost three years — with a single mid-range GPU.

Now you see the problem.

GPU Recommendations for Flux Mining

If you’re building a rig specifically for Flux solo attempts, here’s what actually works:

Don’t make my mistake: I tried running six GTX 1660 Supers thinking quantity beats quality. Wrong. Six cards at 40 MH/s each gave me 240 MH/s total, but the electricity cost ate any potential profit. One efficient RTX 3070 would’ve been smarter.

The Real Block Odds Calculator Math

Every online calculator shows different numbers because they use different formulas. Some calculate “average time to block” while others show “probability per day.” Let me break down how to actually calculate solo block odds for Flux.

The formula that matters:

Time to Block (days) = (Network Hashrate / Your Hashrate) × (Block Time / Blocks Per Day)

But that’s just the average. Because mining is probabilistic, you could hit a block tomorrow or never hit one in five years.

More useful is calculating your probability per day:

Daily Block Probability = (Your Hashrate / Network Hashrate) × Blocks Per Day

Let’s run real scenarios:

Single GPU Setup (RTX 3070 at 65 MH/s)

• Your hashrate: 65 MH/s
• Network hashrate: 50,000 MH/s
• Daily probability: (65 / 50,000) × 720 = 0.936 blocks expected
• Actual probability: 0.09% chance per day
• Average time to block: 1,068 days

That’s basically a lottery ticket that costs electricity every day.

Mid-Size Rig (6x RTX 3070 = 390 MH/s)

• Your hashrate: 390 MH/s
• Network hashrate: 50,000 MH/s
• Daily probability: (390 / 50,000) × 720 = 5.616 blocks expected
• Actual probability: 0.78% chance per day
• Average time to block: 178 days

Six months on average. Still a long shot, but starting to feel possible.

Serious Farm (30x RTX 3070 = 1,950 MH/s)

• Your hashrate: 1,950 MH/s
• Network hashrate: 50,000 MH/s
• Daily probability: (1,950 / 50,000) × 720 = 28.08 blocks expected
• Actual probability: 3.9% chance per day
• Average time to block: 36 days

Now we’re talking. Roughly one block per month with decent variance.

The honest truth? Solo mining profitability on Flux only makes sense if you’re running at least 1 GH/s — that’s around 15-20 modern GPUs. Anything less and you’re gambling more than mining.

Electricity Costs Kill Most Solo Mining Dreams

Here’s where the math gets brutal.

My electricity rate is $0.12 per kWh. That’s actually pretty good compared to California ($0.25) or Germany ($0.35). But even at reasonable rates, the numbers hurt.

Single RTX 3070 running 24/7:

• Power draw: 120W
• Daily consumption: 2.88 kWh
• Daily cost: $0.35
• Monthly cost: $10.37
• Cost until expected block (1,068 days): $369

When you finally hit that block after three years, you’ll get 18.75 FLUX. At current prices around $0.50-$0.80, that’s maybe $15 worth of FLUX. You spent $369 in electricity to earn $15.

Obviously terrible.

Even the six-GPU rig scenario looks rough:

• Power draw: 720W total
• Daily cost: $2.07
• Cost until expected block (178 days): $368
• Block reward value: ~$15

Same problem. You’re burning way more in power than the block reward pays.

The only way to actually profit with solo Flux mining: You need either incredibly cheap electricity (under $0.05/kWh) or enough hashrate to hit multiple blocks per month so variance evens out.

Why Solo Mine Flux Instead of Joining a Pool?

Okay, so the math looks terrible. Why would anyone solo mine Flux instead of just joining a pool and getting steady payouts?

Honestly? Most people shouldn’t.

But here’s why I still mess around with it:

The lottery aspect is genuinely fun. Yeah, I know that sounds dumb when we just calculated you’ll lose money. But there’s something cool about pointing your rig at the network and knowing you might — just might — hit a block. It’s like buying a scratch ticket, except you’re actually contributing to network security.

Learning experience. Setting up solo mining teaches you how blockchain actually works. You connect directly to a Flux node, submit shares yourself, watch the difficulty adjust in real-time. Way more educational than “install miner, point to pool, collect pennies.”

No pool fees. Pools typically charge 1-2% fees. When you solo mine, you keep 100% of block rewards (minus the node operator split that’s built into the protocol). Over thousands of blocks, those fees add up.

You’re supporting true decentralization. Pools concentrate hashrate. Solo miners, even small ones, distribute network power more fairly. If you care about crypto principles beyond just profit, that matters.

What I wish I knew earlier: You can actually hybrid mine. Point most of your rigs at a pool for steady income, but keep one GPU solo mining “just in case.” Best of both worlds.

Setting Up Solo Mining for Flux

The technical setup isn’t complicated once you understand the pieces.

You need three things:

1. A synced Flux node (either your own or a public one)
2. Mining software that supports ZelHash
3. Your Flux wallet address

Running Your Own Flux Node

The “proper” way to solo mine involves running your own full node. This gives you complete control and eliminates dependence on third-party infrastructure.

Requirements:

• Decent CPU (4+ cores)
• 8 GB RAM minimum
• 150 GB storage (SSD recommended)
• Stable internet connection

Download the Flux daemon from the official GitHub repository. Sync can take 12-24 hours depending on your connection speed.

Once synced, you’ll run the node with RPC enabled so your mining software can communicate with it. The command looks like this:

fluxd -rpcuser=yourusername -rpcpassword=yourpassword -rpcallowip=127.0.0.1 -rpcport=16124

That opens port 16124 for local connections. Your mining software will connect to 127.0.0.1:16124 using those credentials.

Mining Software Options

Several miners support ZelHash. I’ve tested three that actually work:

lolMiner: Best for AMD cards. Solid performance, stable, good dev fee structure (0.7% for ZelHash). Works on Windows and Linux. Configuration is straightforward — just edit the batch file with your node IP and wallet address.

Similar to what I covered in my lolMiner solo mining guide, except you’re switching the algorithm parameter to ZelHash.

miniZ: Popular choice for NVIDIA cards. Slightly higher hashrates than lolMiner on some GPUs. Dev fee is 2% though, which stings a bit. Supports both Windows and Linux.

GMiner: Works well on both AMD and NVIDIA. 2% dev fee. User-friendly interface with built-in temperature monitoring. Good for beginners.

Basic command line example for lolMiner:

lolMiner.exe --algo FLUX --pool 127.0.0.1:16124 --user YourFluxAddress.worker --pass x

Replace “YourFluxAddress” with your actual wallet address. The “.worker” part is optional but helps identify which rig found a block if you’re running multiple machines.

Using Public Nodes

Don’t want to run your own node? Fair enough. Several public Flux nodes exist specifically for solo miners.

Just replace “127.0.0.1:16124” with the public node address. Be aware: Public nodes can have downtime, and you’re trusting someone else’s infrastructure. If the node goes down while you’re mining, you’re wasting electricity on dead shares.

I ran public nodes for my first month before setting up my own. Worked fine, but the paranoia got to me. What if I hit a block and the node was misconfigured and I lost it? Probably irrational, but that’s why I eventually sync’d my own node.

Hidden Gem: Flux FluxNode Rewards

Here’s something most mining guides skip: If you’re serious about Flux, consider running a FluxNode instead of (or alongside) mining.

FluxNodes require collateral — you lock up FLUX tokens to operate server infrastructure for the network. In return, you earn node rewards from every block.

Three tiers exist:

• Cumulus: 10,000 FLUX collateral, minimal specs
• Nimbus: 25,000 FLUX collateral, mid-tier specs
• Stratus: 40,000 FLUX collateral, high-end specs

The math actually works better than mining in most cases. A Cumulus node costs around $6,000 in FLUX at current prices but generates roughly 6-8 FLUX per day in rewards. That’s a yearly return of 8-12% on your collateral investment.

Compare that to buying GPUs: $6,000 gets you maybe 10x RTX 3070s. Those 10 cards give you 650 MH/s on Flux, which would take 82 days on average to hit a solo block. And during those 82 days, you’re burning $28/day in electricity.

Node passive income beats mining active costs in this scenario.

I’m not saying abandon GPU mining entirely. But if you’re calculating Flux profitability honestly, node operation deserves consideration as an alternative (or complement) to hardware mining.

Comparing Flux to Other GPU Solo Mining Coins

Flux isn’t the only GPU-mineable coin where solo mining is theoretically possible. How does it stack up?

Ravencoin (KawPow): Similar block times around 1 minute, network hashrate varies between 5-10 TH/s. Block rewards are 2,500 RVN currently. For a detailed comparison, check out my Ravencoin solo mining analysis. The math is slightly better than Flux because network hashrate is lower relative to reward value.

Ergo (Autolykos2): Block time 2 minutes, rewards 66 ERG per block. Network hashrate sits around 20-25 TH/s. Honestly, Ergo solo mining makes more sense than Flux if you’re only running a few GPUs. Difficulty is lower and ERG price tends to be more stable.

Kaspa (kHeavyHash): Completely different beast. 1-second block times mean way more chances to hit blocks, but also way more network variance. I wrote extensively about this in my Kaspa profitability breakdown. Kaspa actually feels more “solo-friendly” because blocks come so fast that variance smooths out quicker.

Firo (FiroPow): Another option I covered in my FiroPow guide. Lower network hashrate makes solo attempts more realistic for small miners. Block rewards are 8.75 FIRO with 2.5-minute block times.

If I’m being completely honest: Flux solo mining is objectively worse than most of these alternatives unless you have a massive farm. The split reward structure (half to nodes, half to miners) means you’re competing for smaller payouts than other coins with similar network sizes.

But Flux has better long-term fundamentals in my opinion. The decentralized cloud infrastructure concept is more compelling than “just another payment coin.” So if you’re betting on future price appreciation, current mining profitability matters less.

Real Profitability Scenario: My 90-Day Test

Theory is cool. Numbers are necessary. But here’s what actually happened when I ran a small Flux solo mining test.

Setup: 4x RTX 3060 Ti (slightly undervolted)

• Combined hashrate: 240 MH/s
• Total power draw: 440W
• Electricity cost: $0.12/kWh
• Daily power cost: $1.27

I ran this rig for 90 days straight pointing at my own Flux node.

Expected blocks during this period: (240 / 50,000) × 720 × 90 = 3.11 blocks

Actual blocks found: 2

Yeah, I ran slightly unlucky. Variance is a pain.

Financial breakdown:

• Total electricity cost: 90 days × $1.27 = $114.30
• Total FLUX earned: 2 blocks × 18.75 = 37.5 FLUX
• FLUX value at time of blocks: ~$22.50
• Net result: -$91.80

I lost almost $92 over three months.

For comparison, I pointed the same rig at a pool for the previous 90 days. Earned roughly 85 FLUX after pool fees. At the same price, that would’ve been $51 worth. Still lost money after electricity ($114 power vs $51 earnings), but way less painful than solo mining.

The only way I “win” from the solo mining attempt is if FLUX price moons in the future. Those 37.5 FLUX I’m holding could be worth $100+ someday if the network actually gains adoption. That’s the speculative bet.

Don’t make my mistake: Don’t solo mine Flux expecting short-term profit. Only do it if you believe in long-term price appreciation and can afford to burn electricity in the meantime.

Alternative: Pool Mining Flux While Holding for Speculation

If you want Flux exposure but aren’t crazy enough to solo mine at a loss, just pool mine and hold the rewards.

Several decent Flux pools exist:

• WoolyPooly (0% fee, pays transaction fees)
• 2Miners (1% fee, reliable infrastructure)
• FluxPools (1% fee, official pool with extra features)
• HeroMiners (0.9% fee, good for small miners)

The payout structure is simple: Mine, accumulate FLUX, withdraw to your wallet, hold for long-term appreciation.

You’ll earn way more coins this way than gambling on solo blocks. Then if FLUX price increases, you profit from the hold rather than from mining luck.

This is basically what I do now. I keep one GPU solo mining Flux for the fun of it, but the rest of my rigs point at WoolyPooly. Best of both worlds — steady income plus lottery ticket excitement.

When Solo Mining Flux Actually Makes Sense

After all these warnings and bad math, when WOULD I recommend solo mining Flux?

Four scenarios where it’s not completely insane:

1. You have free or extremely cheap electricity. If power costs under $0.05/kWh (maybe you have solar panels, or you live somewhere with subsidized rates), the electricity drain doesn’t hurt as much. You’re still gambling on blocks, but at least the gamble costs less per ticket.

2. You’re running a large farm (10+ GPUs). Once you pass 500-1,000 MH/s, block frequency increases enough that variance starts smoothing out over monthly timescales. You’re still better off pool mining financially, but solo mining becomes less of a pure money-losing lottery.

3. You’re treating it as a learning project, not an investment. If your goal is understanding blockchain mechanics and you don’t care about ROI, solo mining teaches more than pools ever will. Just accept the electricity cost as tuition for a really hands-on blockchain course.

4. You genuinely believe FLUX will 10x in price within 2-3 years. This is pure speculation, obviously. But if you think FLUX is severely undervalued and could hit $5-10 per coin (from current $0.0204), then accumulating blocks now — even at an electricity loss — could pay off long-term. You’re essentially dollar-cost-averaging into a position, except with mining rewards instead of buying directly.

Any other scenario? Just pool mine or don’t mine at all.

Frequently Asked Questions About Solo Mining Flux

How long does it take to solo mine one Flux block with a single RTX 3070?

On average, around 1,068 days — roughly three years. This assumes network hashrate stays at 50 GH/s and the RTX 3070 maintains 65 MH/s. In practice, difficulty fluctuates, so you might hit a block in one month or never hit one at all. Mining is probabilistic, not deterministic. The “average” is just a statistical expectation, not a guarantee. With a single GPU, you’re basically buying an expensive lottery ticket every day.

Can I use multiple GPUs from different brands for solo mining Flux?

Yes, absolutely. ZelHash runs on both NVIDIA and AMD cards, and you can mix them in the same rig. I’ve tested rigs with 3x NVIDIA RTX cards and 2x AMD RX cards mining Flux simultaneously with no issues. Just make sure your mining software supports both brands (lolMiner and GMiner both work fine with mixed setups). Your total hashrate is just the sum of all cards, so a mixed rig with 300 MH/s total has the same solo mining odds as a pure-NVIDIA rig with 300 MH/s.

Is solo mining Flux more profitable than running a FluxNode?

No, running a FluxNode is significantly more profitable in most cases. A Cumulus node (10,000 FLUX collateral) generates 6-8 FLUX per day passively with minimal electricity cost. That same $6,000 investment in GPUs would give you maybe 10x RTX 3070s, which consume $3.50/day in electricity and would hit solo blocks only every 82 days on average. Node rewards are steady and predictable, while solo mining is high-variance gambling with negative expected value when electricity costs are factored in.

What happens to my mined Flux if the network difficulty increases while I’m solo mining?

Nothing happens to coins you’ve already mined — those are safe in your wallet. However, increasing difficulty means your chances of finding future blocks decreases proportionally. If network hashrate doubles (difficulty increases), your expected time to next block also doubles. This is why solo mining profitability calculations are always moving targets. You need to regularly recalculate your odds based on current network conditions. Unlike pool mining where you just earn less per share, solo mining turns into an even longer-shot lottery when difficulty rises.

Should I solo mine Flux or Kaspa with the same GPU rig?

Kaspa is generally a better choice for small solo miners. Kaspa’s 1-second block time means 86,400 blocks per day versus Flux’s 720 blocks per day. More frequent blocks smooth out variance much faster, so you’ll see results (or realize you’re not going to see results) way sooner. The tradeoff is Kaspa uses kHeavyHash instead of ZelHash, so hashrates aren’t directly comparable. Check out my Kaspa solo mining guide for detailed odds comparison. But honestly, if you’re running fewer than 10 GPUs, either coin is a longshot for solo mining — pool mining makes way more financial sense.