Best GPUs For Mining In 2025: ROI & Efficiency Guide

GPU mining in 2025 isn’t dead; it’s narrower and smarter. Ethereum’s Merge moved ETH to Proof-of-Stake, closing ETH GPU mining. ASICs own Bitcoin and Litecoin. GPUs still matter on Kaspa, Ravencoin, Flux, and Ergo. 

Many new miners still search for a bit mining GPU, but the reality is that Bitcoin is ASIC-only, leaving GPUs for altcoins. Expect small profits and slow ROI; electricity rates decide outcomes

If you pay ≤ $0.10/kWh, or use solar, you can stay in the green. If not, you’ll need careful tuning, undervolting, and a clear exit plan. Start with live calculators, not guesses. Then pick the card that is efficient, quiet, and easy to resell. Let’s choose the best GPUs for mining in 2025.

This guide ranks the best GPUs for crypto mining by efficiency first, then raw hashrate and price, with actionable recommendations.

Key Takeaways

• Efficiency beats raw power, so focus on hashrate per watt instead of maximum hashrate.
• Electricity costs dominate profitability. Most home miners require an electricity cost of ≤ $0.10/kWh (ideally $0.05–$0.08/kWh) to stay meaningfully positive; verify with a live calculator.
• RTX 4070 series offers the best ROI as the sweet spot between efficiency and cost at 7-8 MH/s per watt.
• VRAM rules: RVN needs >6 GB today (Windows earlier), Flux runs on 6–8 GB+ (8 GB+ recommended), and Ergo has historically worked on 3–4 GB, but 6–8 GB gives headroom.
• Expect 2-5+ year payback periods, so treat mining as hobby income rather than primary revenue.
• RTX 4090 only makes sense with very cheap or solar power. Expect ~240 W on Kaspa (tuned) and ~330–360 W on KawPoW.
• Used market favors the RTX 3070 series due to good efficiency and strong gaming resale value.
• Target coins are now Kaspa, Ravencoin, Flux, and Ergo since Ethereum mining ended with Proof-of-Stake.
• Cooling and undervolting are essential because heat kills both performance and hardware longevity.
• Calculate ROI before buying using live profitability data and your actual electricity costs.

What to Look for in a Mining GPU (Key Factors)

Pick the best crypto mining GPUs by efficiency first (hashrate per watt), then VRAM, thermals, and price-to-ROI. Check live GPU mining profitability before you buy. Hashrate (units that matter)

• MH/s, GH/s, Sol/s are throughput units. 1 GH/s = 1,000 MH/s; Sol/s is “solutions per second” on Equihash-family algos (Flux). Higher = faster.
  

Efficiency (profit driver)

• Efficiency = hashrate ÷ watts (e.g., 1.0 GH/s at 120 W ≈ 8.3 MH/s per W).
• Favor the best graphics cards for mining that deliver high throughput at low power limits. This cuts your bill and noise, and extends hardware life.
  

VRAM & DAG/Working-Set Rules

• Ravencoin (KawPoW): current DAG ≈ 5.2 GB; >6 GB VRAM recommended. 6-GB cards will likely lose support around early–mid 2027 (earlier on Windows). Always confirm with a live DAG calendar.
• Flux (ZelHash/Equihash-125,4): no classic DAG. Runs on 6–8 GB+, with 8 GB+ recommended for stability and performance.
• Ergo (Autolykos v2): memory-hard. 3–4 GB has worked historically, but 6–8 GB gives safer headroom as the dataset grows. Check current miner notes before buying.

Track growth with a DAG size calendar before purchasing used cards.

Power, Thermals, and Cooling

• Check TDP and real mining draw. KawPoW and Flux can run hot; undervolt, cap power, and improve case airflow.
• Prefer models with larger heatsinks, quality VRAM pads, and dual/triple fans. Heat kills ROI.
  

Price → ROI Math (no guesswork)

• ROI (days) = GPU price ÷ daily net profit.
• Example: $300 ÷ $0.15/day = 2,000 days. If power is high, ROI explodes; if power is cheap, it shrinks fast.
• Always sanity-check with a live profitability snapshot.

Resale value (exit plan)

• Cards with 12–16 GB VRAM, quiet coolers, and strong gaming/creator demand hold value better.
• Avoid niche blower models unless airflow and noise are managed.

Always run numbers through a trusted GPU mining calculator before buying. This gives you live data on daily revenue, net profit, and ROI for different algorithms.

Best High-End GPUs for Mining (2025 Performance Leaders)

GPU Model	Kaspa Hashrate	Ravencoin (KawPoW)	Flux (ZelHash)	Power Draw (W)	Daily Profit @ $0.10/kWh	VRAM
NVIDIA RTX 4090	~2.0 GH/s	~67 MH/s	~150 Sol/s	240 (Kaspa tuned) / ~330 (KawPoW)	~$1.00	24 GB
NVIDIA RTX 5080	~1.5–1.7 GH/s*	~55 MH/s*	~120 Sol/s*	~360	~$0.25–0.30 (post-power)	16 GB
NVIDIA RTX 5090	TBD (est. >2.2 GH/s)*	TBD	TBD	400W typical, up to 575W under heavy load	TBD	32 GB
AMD RX 7900 XTX	~1.2 GH/s	~58 MH/s	~88 Sol/s	270–300	~$0.40–0.50	24 GB

*Early or estimated figures from current testing and reports; final values may vary as tuning improves.

Let’s discuss the best high-end GPUs for mining.

NVIDIA RTX 4090 – The Hashrate King

The RTX 4090 remains the undisputed leader in raw hashrate. On Kaspa it pushes around 2.0 GH/s while still handling Ravencoin and Flux with ease. 

With 24 GB of VRAM and top-tier throughput, it dominates benchmarks. The tradeoff is efficiency. Power draw sits in the 240 W range, which erodes profitability fast. 

At $0.10/kWh, daily profits are close to break-even, making ROI timelines unrealistic. For most miners, the 4090 only makes sense if you have free or solar power and want maximum output.

• Pros: Highest hashrate, huge VRAM, future-ready.
• Cons: Very high power consumption, poor ROI, premium pricing.

NVIDIA RTX 5080 & 5090 – Next-Gen Ada-Next Cards

The RTX 5080 strikes a better balance between power and performance. It delivers strong hashrates across Kaspa, Ravencoin, and Flux, with efficiency improvements over the 4090. 

Power usage sits around 360 W, still high but more manageable. At typical energy rates, ROI stretches into multiple years, but the 5080 works for setups with cheap or renewable electricity.

The RTX 5090, while newer and not as widely tested in mining, is expected to outperform both cards on raw throughput. 

Early reports point to higher efficiency in some algos but also a power draw north of 575 W. Like the 4090, it’s only viable where electricity is nearly free.

• Pros: Modern architecture, efficiency gains, top-tier performance.
• Cons: Expensive, power-hungry, ROI weak at normal rates.

AMD Radeon RX 7900 XTX – Best AMD Flagship

AMD’s flagship is competitive in memory-heavy algorithms. On Kaspa it runs near 1.2 GH/s, with respectable performance on Ravencoin and Flux. 

The 24 GB VRAM provides long-term headroom, and pricing often undercuts Nvidia. Power draw sits around 270–320 W, which makes ROI difficult at standard electricity costs. 

Thermals are another challenge; this card runs hot and requires strong cooling.

• Pros: Lower upfront cost, strong memory-heavy algo results, high VRAM.
• Cons: Runs hot, less efficient than Nvidia, ROI still limited without cheap power.

Best Mid-Range GPUs for Mining (Efficiency Picks)

GPU Model	Kaspa Hashrate / Power	Efficiency (MH/s per W)	Profit @ $0.10/kWh	Estimated ROI
RTX 4070 / Super	~0.86–0.88 GH/s @ 120 W	~7–8	$0.30–$0.40	2–3 years
RX 7900 XT	~1.1 GH/s @ 270 W	~4	$0.20–$0.25	3–4 years
RTX 4080	≈1.2 GH/s @ 160 W on Kaspa (about ~60% of a 4090’s rate)	~6–7	$0.05–$0.10	>5 years

Let’s discuss the best mid-range GPUs for mining. 

NVIDIA RTX 4070 / 4070 Super

The RTX 4070 series hits the sweet spot between cost and efficiency. On Kaspa, it delivers around 860–880 MH/s at 120 W, clocking ~7–8 MH/s per watt, almost on par with the RTX 4090, but for far less money.

It also does well on memory-heavy algorithms like Autolykos (Ergo) and ZelHash (Flux), thanks to 12 GB VRAM. 

Typical after-power profit at $0.10/kWh often ranges in the low cents per day on mid-range cards; always check a live snapshot before you buy. That puts ROI in the 2–3 year range, reasonable for hobbyists.

• Pros: Excellent efficiency, manageable power draw (~120 W on Kaspa with undervolt), strong across algos.
• Cons: Slightly lower raw hashrate than big cards; pricing is still higher than last-gen options.

AMD RX 7900 XT

The RX 7900 XT brings AMD value and performance. Expect around 1.1 GH/s on Kaspa at 270 W, and solid results on Flux and Ergo too. Efficiency lands at 4.0 MH/s per watt, less than the 4070, but AMD cards often cost less.

Profit sits at $0.20–$0.25/day at $0.10/kWh, with ROI around 3–4 years depending on buy-in. Its 20 GB VRAM future-proofs for upcoming DAG increases.

• Pros: Affordable, ample VRAM, solid all-around performance.
• Cons: Hotter and less efficient; resale value lags Nvidia.

NVIDIA RTX 4080

The RTX 4080 offers strong midrange speed. On Kaspa it’s ~1.2 GH/s at ~160 W (≈60% of a 4090). Flux performance is strong but varies by OC and miner. Efficiency hovers around 6–7 MH/s per watt, better than the 7900 XT but slightly behind the 4070.

Its high launch price (~$1,200) hurts ROI: after-power profit varies widely; verify with a live snapshot (coin, OC, pool), pushing ROI beyond 5 years unless power is very cheap. But it’s a beast if you already own one.

• Pros: Excellent hashrate-per-watt; reliable build and cooling.
• Cons: Poor ROI due to cost; still requires strong cooling and undervolting.

Mid-range GPUs like the RTX 4070 deliver the best efficiency-to-cost ratio in 2025. If power costs are under $0.15/kWh, they remain profitable. 

The RX 7900 XT is a reliable value pick for AMD fans. The RTX 4080 offers strong performance, but only makes sense if you already own it or can buy it significantly under MSRP.

Best Budget GPUs for Mining (Entry-Level & Used Market)

GPU Model	Kaspa Hashrate / Power	Ravencoin (KawPoW)	Typical Daily Profit*	Efficiency (MH/s per W)	Used Price Range	ROI Outlook
RTX 3070	~510 MH/s @ 80 W	~27–28 MH/s @ 180 W	$0.05–$0.10	~6–7	$220–$250	2–3 years with cheap power
RTX 3070 Ti	~595 MH/s @ 120 W	~30 MH/s @ 200 W	$0.08–$0.12	~5–6	$250–$280	2–3 years with cheap power
RX 6700 XT	~460 MH/s @ ~80–100	~19–22 MH/s	$0.10–$0.15	~4.6–5.7	$200–$240	3–4 years at <$0.08/kWh
RX 6600	~330 MH/s @~70 W	Lower performance	$0.05–$0.10	~4–5	$150–$180	3+ years at <$0.08/kWh
RTX 3060	~400–450 MH/s @ 120 W	~20–22 MH/s	$0.10–$0.15	~3–4	$150–$200	3+ years with cheap power

*Profits shown are net before electricity at $0.10/kWh. At $0.20/kWh, most profiles turn negative.

 Here are the entry-level GPUs for mining. 

NVIDIA RTX 3070 Ti & 3070

The 3070 series remains one of the most popular budget choices for small miners. On Kaspa, the RTX 3070 averages ~510 MH/s at ~80 W, while the 3070 Ti can push ~595 MH/s with careful tuning. On Ravencoin (KawPoW), expect ~27–28 MH/s at ~180 W, though this load runs hot.

Profitability: With electricity at $0.10/kWh, daily profits usually hover near $0.05–$0.10, sometimes breakeven. At $0.20/kWh, returns often turn negative.

ROI: On the used market, these cards sell for $220–$280. With cheap power (~$0.05–$0.08/kWh), ROI can land in the 2–3 year range.

•  Pros: Strong efficiency for Kaspa, large community tuning support.
•  Cons: Power-hungry on RVN, generates heavy heat.

AMD RX 6700 XT & RX 6600

AMD’s 6000-series cards are budget-friendly and common on the used market. The RX 6700 XT achieves around ~460 MH/s  at ~80–100W, while the RX 6600 delivers modest profits at lower wattages. 

On Ravencoin, hashrates land in the 19–22 MH/s range but power efficiency is weaker than Nvidia counterparts.

Profitability: Expect $0.10–$0.20/day before power. Net profit is only positive if your electricity is under $0.08/kWh.

ROI: With lower upfront cost than Nvidia, ROI can stretch to 3–4 years in cheap-power environments.

• Pros: Lower price entry, decent VRAM, performs well on memory-light algorithms.
• Cons: Less efficient than Nvidia; resale value is weaker.

The RTX 3060 is abundant and cheap, making it attractive for hobbyists. On Kaspa or FIRO, tuned profiles show ~400–450 MH/s at 120 W. On Ravencoin, expect modest hashrates but high heat.

Profitability: Typically $0.15–$0.20/day before power. At $0.10/kWh, many rigs break even; at $0.20/kWh, expect losses.

ROI: With used prices often $150–$200, ROI can take 3+ years even at low power costs.

• Pros: Affordable, widely available, good efficiency for entry-level miners.
• Cons: Margins are thin, ROI is long, limited headroom for future algorithms.

Algorithm-Specific Best GPUs for Mining (2025)

Algorithm	Best GPU(s)	VRAM Requirement	Power Profile	Key Notes
Kaspa (kHeavyHash)	RTX 4090, RTX 4070	No DAG; 4 GB works (more = headroom)	~240 W (4090), ~120 W (4070)	Core efficiency leader; ~2 GH/s on 4090
Ravencoin (KawPoW)	RTX 5090, RTX 4090	≥5.16GB (DAG ~5.1 GB, growing)	330–360 W	Power-hungry, heat-heavy, ROI weak unless power is cheap
Flux (ZelHash 125,4,5)	RTX 4080, RX 7900 XTX	6–8 GB (8 GB+ recommended)	220–250 W	Memory bandwidth sensitive; efficiency key
Ergo (Autolykos v2)	RTX 4070 Super, RX 7900 XT	3–4 GB historically; 6–8 GB recommended	200–270 W	Memory-heavy; ASIC-resistant; sustainable for GPU miners

If you’re unsure what to GPU mine in 2025, start with Kaspa, Ravencoin, Flux, and Ergo, then tune per algorithm for the card you own.

Kaspa (kHeavyHash)

Kaspa rewards raw throughput and efficiency. The RTX 4090 pushes ~2 GH/s at ~240 W, while the RTX 4070 delivers ~860–880 MH/s at ~120 W, making it one of the most efficient mid-range options. 

Undervolting and fine-tuned core clocks are essential. If you have access to cheap or solar power, the 4090 dominates; otherwise, the 4070 series is the smarter buy.

Ravencoin (KawPoW) 

KawPoW requires at least 5.16 GB VRAM, with the DAG already at ~5.1 GB and projected to exceed that by 2027. The RTX 4090 manages ~67 MH/s @ ~330 W, while the RTX 5090 scales higher but guzzles power. 

These cards run hot, expect high fan speeds and thermal stress. Profits are slim unless your electricity costs are very low, so RVN mining is best for those with cheap power or who repurpose the heat.

Flux (Equihash-125,4 (ZelHash))

Flux is bandwidth-driven and benefits from cards with 8 GB+ VRAM. GPUs like the RTX 4080 and AMD RX 7900 XTX perform well, delivering strong Sol/s at ~220–250 W. 

Run mining and node ops as separate sizing decisions; Flux nodes don’t need powerful GPUs. Memory overclocking pays off here, but watch temps.

Ergo (Autolykos v2)

Ergo relies on memory rather than raw core power, making it ASIC-resistant. It demands more than 6 GB VRAM for stability. Cards like the RTX 4070 Super and RX 7900 XT thrive here, handling sustained workloads at 200–270 W. 

Tuning memory clocks while undervolting yields the best efficiency. Ergo remains one of the most viable GPU-only coins, especially for miners with access to affordable power.

How to Calculate ROI for Mining GPUs (Step-by-Step)

ROI (days) = GPU Cost ÷ Daily Net Profit, where Daily Net Profit = Daily Revenue − Power Cost − Fees. In 2025, many setups sit at 1,500–5,000+ days. Cheap power and high efficiency are the only ways to win.

Gather the Numbers

• GPU cost: purchase price (or used price).
• Power draw: watts while mining (use your tuned value, not TDP).
• Electricity rate: $/kWh (include taxes/surcharges).
• Pool fee: usually 0.5–2% of revenue.
• Daily revenue: use a live snapshot (same coin, same OC, same pool).
  

Compute Daily Power Cost

Power Cost = (Watts ÷ 1,000) × 24 × $/kWh
Example: 120 W → 0.12 kW × 24 = 2.88 kWh/day

• At $0.10/kWh → $0.29/day
• At $0.20/kWh → $0.58/day
  

Get Daily Net Profit

Daily Net = Daily Revenue − Power Cost − (Revenue × Pool Fee)

Calculate ROI (days)

ROI = GPU Cost ÷ Daily Net
Optionally include resale: ROI = (GPU Cost − Expected Resale) ÷ Daily Net

Worked example (simple, AIO-ready)

• GPU: RTX 3070 Ti, Cost: $300 (used).
• Daily net profit: $0.15/day after power and fees (conservative).
• ROI: $300 ÷ $0.15 = 2,000 days (~5.5 years).
  

Power price sensitivity (same hashrate, same clocks)

Assume 120 W draw, $0.60/day revenue, 1% fee (=$0.006).

• At $0.10/kWh: Power $0.29 → Net $0.60 − $0.29 − $0.006 = $0.304
  • $300 ÷ $0.304 ≈ 987 days (~2.7 years) 
• At $0.20/kWh: Power $0.58 → Net $0.60 − $0.58 − $0.006 = $0.014
  • $300 ÷ $0.014 ≈ 21,429 days (not viable)
    

What usually stretches ROI in 2025

• High electricity (every +$0.05/kWh adds months or years).
• Overstated hashrate (bench vs real 24/7).
• Heat and throttling (KawPoW/RVN especially).
• Downtime (reboots, crashes, internet).
• Difficulty/price drift (yields fall as difficulty rises).
  

How to shorten ROI (practical levers)

• Undervolt & power-cap: optimize MH/s per watt, not just MH/s.
• Pick the right algo for your card (e.g., memory algos for big-VRAM AMD, Kaspa for efficient Ada).
• Run cooler: fresh pads/paste, directed airflow, dust control.
• Lower fees: pools with 0.5–1.0% and stable payouts.
• Use the heat: offset winter heating to reclaim part of the power bill.
• Buy right: prefer efficient cards at used prices with strong resale.
  

Mining Rig Setup Considerations (Beyond the GPU)

A mining rig is only as good as its weakest part. Strong GPUs fail without the right motherboard, PSU, cooling, and airflow. Build for stability first, then efficiency.

Motherboard

Choose a motherboard with enough PCIe slots for your planned rig. For 6–8 GPU setups, look for mining-focused boards or workstation boards that offer stable PCIe lane management. 

Risers can extend flexibility, but avoid cheap, unstable adapters that cause crashes. Always update the BIOS for mining stability.

CPU and RAM 

Mining doesn’t stress CPUs. A low-power dual-core is enough. Pair it with 8–16 GB of RAM, enough to handle OS and miner tasks without bottlenecks. Spending more on CPU or RAM won’t increase hashrate; save your budget for GPUs and power.

PSU

Never undersize your power supply. Calculate the total watt draw of all GPUs, then add 20–30% headroom for spikes and efficiency. A 1,200 W rig that runs at 900 W will last longer and run cooler than a PSU maxed at 100%. 

Stick to 80+ Gold or Platinum rated units for efficiency and safety. Distribute power evenly across rails and cables to prevent hotspots.

Cooling and Thermal Pads

Mining rigs run hot, especially on KawPoW (Ravencoin), where VRAM is heavily loaded. Replace stock thermal pads on older GPUs with higher-quality ones, and re-paste if temps creep above 90°C. 

Open-frame rigs improve airflow, but pair them with high static-pressure fans to push air across all cards. For large setups, consider ducted airflow or exhaust fans to move hot air out of the room.

Noise and Space Constraints

A six-GPU rig can sound like a small jet engine. Plan for a dedicated space with ventilation. Noise levels are often the breaking point for hobby miners. 

Don’t put rigs in bedrooms or living areas. For serious builds, consider garage or basement setups with airflow paths designed for intake and exhaust.

Risks and Realities of GPU Mining in 2025

GPU crypto mining is still alive, but margins are razor-thin. Profits depend on cheap electricity, efficient tuning, and a willingness to take risks. Most miners should treat it as a side project, not a full-time income stream.

Hardware Wear and Resale Value

Mining rigs run 24/7. That constant load wears down fans, thermal pads, and VRAM. Even with good maintenance, resale prices for ex-mining cards are lower than for lightly used gaming GPUs. 

The safest approach is to buy cards with high VRAM and broad resale demand, so if mining tanks, you can still sell into gaming or AI markets.

Electricity Cost Dominance

Power bills decide profitability. A GPU that earns $0.60/day in revenue can lose money if electricity costs $0.20/kWh. At typical residential rates, ROI stretches beyond 5,000 days. 

Only miners with $0.05–$0.08/kWh power, solar setups, or free heat reuse see a realistic payback. For everyone else, electricity costs eat into the margins.

Market Volatility

Crypto prices swing hard. Daily mining profit can shift 20–50% in a week. Difficulty adjustments add another variable; more hashpower on a network lowers individual payouts. 

A card that looks profitable today can drift into the red tomorrow. Always model ROI using live snapshots and update your assumptions weekly.

Regulation and Environmental Debate

Governments are tightening oversight. The EU has raised concerns over energy-intensive mining, and some US states have introduced limits on crypto mining tied to power grids. 

Environmental debates around carbon impact make large GPU farms riskier. Hobby mining flies under the radar, but scaling up brings scrutiny.

Comparing to Staking and ASICs

• Staking: Requires capital in coins, not hardware. It’s lower maintenance and often more stable, but lacks the hardware resale option.
• ASICs: Dominate Bitcoin and Litecoin with far better efficiency than GPUs. But ASICs are single-purpose; once obsolete, resale value is near zero. GPUs at least pivot to gaming, AI, or creative workloads.

Conclusion & Recommendations

GPU mining in 2025 is no longer the wide-open profit path it once was. The Ethereum Merge ended ETH mining, ASICs dominate Bitcoin and Litecoin, and GPU miners now focus on altcoins like Kaspa, Ravencoin, Flux, and Ergo. 

Profits are small, typically $0.20 to $1.40 a day before electricity, and ROI often stretches into years once you factor in $0.10–$0.20/kWh power costs. 

That makes efficiency, undervolting, and cheap power the deciding factors. The RTX 4090 is unmatched for raw hashrate, but only makes sense if your electricity is nearly free. 

For real ROI, cards like the RTX 4070 or 3070 Ti hit the sweet spot, while the RX 6700 XT works as a solid budget entry. 

Mining today fits hobbyists, gamers, and AI users who can repurpose hardware; those looking for stable returns should also weigh alternatives like staking or hosting. 

To scale smarter, consider RedSwitches Dedicated Servers, GPU-ready hardware, unmetered bandwidth, and 24/7 support built for mining and beyond.

FAQs

Q. What GPU is best for mining?

For pure hashrate, the RTX 4090 leads. For efficiency and ROI, the RTX 4070 / 4070 Ti are smarter picks. On a budget, the RX 6700 XT is a strong entry card.

Q. What is the most profitable GPU for mining?

Profit depends on your electricity rate. At normal power costs, mid-range GPUs like the 4070 or 3070 Ti give the best balance. The 4090 only makes sense with very cheap power.

Q. How long to mine 1 Bitcoin with a 4090?

It’s not practical. Even at 2 GH/s, a 4090 would take tens of thousands of years to mine 1 BTC. ASICs are the only realistic option for Bitcoin.

Q. Is GPU mining dead in 2025?

No. It’s niche but viable. GPU mining now works best for hobbyists, gamers, or AI users who can repurpose their hardware. Profits are small and ROI is long.

Q. Which GPUs offer the best MH/s per watt for Kaspa and Ergo?

The RTX 4070 is a Kaspa efficiency leader at 7–8 MH/s per watt. For Ergo, AMD 7900 XT/XTX and the 4070 Super deliver strong efficiency thanks to memory bandwidth.

Q. How does RTX 4090 mining efficiency compare to RTX 4070 Ti Super?

The 4090 wins in raw hashrate, but its 350–450 W draw destroys ROI. The 4070 Ti Super is more efficient per watt, making it cheaper to run daily.

Q. What upfront and running costs should I expect for a 6-GPU rig?

• Upfront: $1,200–$3,000 depending on cards, motherboard, PSU, and frame.
• Running: 800–1,200 W → $60–$170/month at $0.10–$0.20/kWh. Add cooling and noise management on top.