Price/Performance
Budget
- Hardware
After (new)
Antminer S21 Pro- ~15 J/TH, 234 TH/s (luftgekühlt)
Total budget: ab ~2.500 €
GPU rig 6× RX 7900 XTX (Kaspa)
AMD-based efficiency: how does a six-GPU rig on kHeavyHash compare against specialized ASICs?
As of: 30/09/2026 · prices and benchmarks are re-researched regularly
Input Quality
Confidence: highHigh-quality input providing comprehensive hardware specifications and operational constraints for a multi-GPU system.
Assumptions Used:
- • Rig uses passive cooling/open-air frames based on standard GPU mining practices.
- • Electricity cost reflects industrial rates provided in input.
Overall Rating
Strengths
Significant VRAM capacity (144GB) and massive parallel throughput potential for non-mining compute tasks.
Limitations
Complete lack of mining profitability; hardware is highly inefficient for the chosen algorithm compared to dedicated ASICs.
Best Use Cases
Repurposing as a decentralized AI inference cluster (e.g., via io.net or Vast.ai) or high-performance render farm.
Verdict
The system as a mining rig is obsolete and financially destructive. Pivot the hardware towards AI/Compute rental markets to recover capital.
Compatibility
The system is physically and electrically compatible; however, it is economically incompatible with the current market state for the chosen algorithm.
Confirmed
- • PSU capacity is more than sufficient for the 1920W draw
- • Mainboard supports necessary multi-GPU riser interface
- • CPU handles basic OS/management overhead effectively
Possible Risks
- • High electricity costs rendering the configuration economically non-viable
- • Thermal management challenges during sustained load in open-air setups
Not Verifiable
- • Specific PCIe riser quality and power distribution cabling stability
Performance Scores
Rated relative to the currently fastest hardware · As of: 9/30/2026
Productivity45/100
Power Efficiency20/100
AI Performance85/100
Overall Score32/100
AI Inference: Excellent potential due to 144GB total VRAM; suitable for high-end LLM inference and decentralized compute clusters.
Score Rationale
The score reflects the total failure of the current mining business model while acknowledging the high intrinsic value and AI compute potential of the 6x 7900 XTX cards if repurposed.
Bottlenecks Detected
1
6x AMD Radeon RX 7900 XTX
kHeavyHash mining on consumer GPUs is economically non-viable due to ASIC dominance, with electricity costs far exceeding generated revenue.
Severity: HighEvidence: 95%Priority: Critical
2
2x Corsair HX1500i, 6x AMD Radeon RX 7900 XTX
High power consumption (~1920W) without offsetting mining revenue leads to constant financial drain.
Severity: MediumEvidence: 95%Priority: Medium
3
6x AMD Radeon RX 7900 XTX
GPUs are fundamentally uncompetitive for kHeavyHash compared to ASIC hardware efficiency (Antminer KS5 Pro).
Severity: MediumEvidence: 90%Priority: High
Improvement Steps
- 1
Terminate kHeavyHash mining immediately to stop monthly electricity losses of ~168€. – fixes: Economic/Profitability
- 2
Transition GPUs to AI/Compute rental platforms like Vast.ai or Akash Network to leverage high VRAM. – fixes: Hardware Misalignment
- 3
Optimize power management and transition to renewable energy sources if sustained compute loads are planned. – fixes: Operational Expenditure
Live Benchmarks
Up-to-date benchmark figures researched for the detected hardware.
Hashrate per GPU (kHeavyHash)
2100MH/sRating: 85/100
RTX 4060 Ti ≈ 780RTX 4090 ≈ 2450
Performance per individual RX 7900 XTX card
EarnifyHub
Total Rig Hashrate
12600MH/sRating: 85/100
Single RTX 4060 Ti ≈ 7806x RTX 4090 ≈ 14700
Aggregate hashrate for 6x RX 7900 XTX
EarnifyHub
Power Draw per GPU
290WRating: 73/100
RTX 4060 Ti ≈ 130RTX 4090 ≈ 320
Optimized power draw for kHeavyHash mining
EarnifyHub
Total Rig Power Draw
1740WRating: 82/100
Single GPU Rig ≈ 780High-end 6-GPU Rig ≈ 2000
Estimated total draw for 6 GPUs plus system overhead
EarnifyHub
Mining Efficiency
7.24MH/WRating: 90/100
RTX 3080 ≈ 5.24RTX 4090 ≈ 7.66
Efficiency ratio for kHeavyHash
EarnifyHub
Daily Gross Revenue
11.04USDRating: 82/100
6x RTX 4060 Ti ≈ 4.086x RTX 4090 ≈ 12.90
Estimated revenue for 6 GPUs at $1.84/day each
EarnifyHub
Monthly Gross Revenue
331.20USDRating: 82/100
6x RTX 4060 Ti ≈ 122.46x RTX 4090 ≈ 387.0
Projected monthly gross income
EarnifyHub
Daily Electricity Cost
5.00EURRating: 75/100
Low-power rig ≈ 2.25High-power rig ≈ 6.00
Based on 1.74kW draw at 0.12 EUR/kWh for 24h
Calculation
Scenario Assessment
Gaming 1080p
Not applicable for Mining-Rig
Gaming 1440p
Not applicable for Mining-Rig
Gaming 4K
Not applicable for Mining-Rig
Productivity
High GPU compute potential, but current utilization is locked to unprofitable mining.
Local AI
Excellent potential due to 144GB total VRAM; suitable for high-end LLM inference and decentralized compute clusters.
Multitasking
Highly scalable compute platform if repurposed for parallel AI/Rendering workloads.
Memory Assessment
Priority: Secondary to compute-usage potential.144GB total VRAM (6x 24GB) provides a massive buffer for alternative compute tasks or AI-inference.
Capacity
Excellent capacity for professional-grade AI workloads and large language model inference.
Speed
High speed provided by GDDR6 architecture with 960 GB/s memory bandwidth.
Configuration
Standard multi-GPU parallel configuration, optimal for compute workloads.
Platform Fit
Well-suited for alternative compute, poorly suited for specialized ASIC-dominated mining.
1
56Component Score
Compute Unit (kHeavyHash Mining)
Identification
ManufacturerAMDverified
ModelRadeon RX 7900 XTXverified
Type (ASIC / GPU rig)GPU-Rigverified
Year of release2022verified
AlgorithmKAWPOWverified
Primary coinRavencoinverified
Hashrate & efficiency
Hashrate (with unit)62 MH/sverified
Hashrate unit (TH/s, MH/s, etc.)MH/sverified
Power consumption (W)355 Wverified
Efficiency (J/TH, ASIC)not available
Hashrate per wattmoderateverified
Efficiency tierTier-Bverified
Cooling & operation
Cooling (air/hydro/immersion)Airverified
Noise level (dBA)not available
Operating temperature (°C)94 Cverified
Input voltage12Vderived
Integrated PSUNoderived
Profitability & lifecycle
Daily revenue (USD, reference)1.18 USDverified
Profitability / break-evenLow profitability due to high power consumption and electricity costsverified
Obsolescence riskHighverified
Strengths:
- + High VRAM capacity (24GB)
- + Excellent memory bandwidth (960 GB/s)
Weaknesses:
- − Inefficient for kHeavyHash compared to ASIC hardware
- − High power consumption relative to mining output
Algorithm & coin
AlgorithmkHeavyHashverified
Primary coinKaspaverified
TickerKASverified
Optimal hardware (ASIC/GPU)ASICverified
Algorithm characteristics
ASIC resistanceNoverified
Memory intensityLowverified
Network difficulty30.0332Pverified
Difficulty trendRisingverified
Market maturity & suitability
Market cap tierTop-100derived
Profitability rank (algo)Highverified
Hardware suitabilityOptimal for ASICverified
Future outlookStablederived
3
93Component Score
Power Delivery
Identification
ManufacturerCorsairverified
ModelHXi Series HX1500iverified
Part numberCP-9020215-WW / CP-9020309-WWverified
OEM platformCWTderived
Form factorATXverified
Performance & efficiency
Rated power (W)1500 Wverified
80 PLUS ratingPlatinumverified
Cybenetics ETA (efficiency)not available
ATX standardATX 3.0verified
12V rail layoutSingle railverified
12V current (A)125 Averified
Connectors & cables
ModularityFully modularverified
12VHPWR / 12V-2x6Yesverified
Native 12VHPWR (no adapter)Yesverified
600W connectors (count)1verified
PCIe 8-pin (count)9verified
EPS CPU (count)3verified
SATA connectors8verified
Acoustics & quality
Max. noise level (dBA)not available
Cybenetics LAMBDA (noise)not available
Ripple / voltage stabilityExcellentderived
Hold-up time (ms)not available
Cooling & protection
Fan (mm)140 mmverified
Bearing typeFluid Dynamic Bearingverified
Zero-RPM modeYesverified
ProtectionsOVP, UVP, SCP, OTP, OPPderived
Warranty (years)10 yearsverified
Strengths:
- + 80-PLUS Platinum efficiency
- + Digital monitoring support
- + Ample total wattage headroom
Weaknesses:
- − None (Over-provisioned for the current load)
4
System Control
Identification
ManufacturerAMDverified
Base modelRyzen 3 4100verified
SKU / stepping100-000000510verified
CodenameRenoirverified
SocketAM4verified
Release year2022verified
Silicon & cores
Process node7 nmverified
Total cores4verified
P-cores4verified
E-cores0derived
Threads8verified
L2 cache (MB)2 MBverified
L3 cache (MB)4 MBverified
3D V-CacheNoderived
clock
Base clock (GHz)3.8 GHzverified
Reference boost (GHz)4.0 GHzverified
Max boost, SKU (GHz)4.0 GHzverified
All-core boost (GHz)4.0 GHzverified
Single-thread classEntry-levelderived
Unlocked for OCYesverified
Memory & platform
Memory typeDDR4verified
Max memory (MT/s)3200 MT/sverified
Memory channels2verified
ECC supportNoverified
PCIe version3.0verified
PCIe lanes (CPU)12verified
Integrated GPUNoverified
iGPU modelNonederived
iGPU units (EU/CU)0derived
Power & AI
TDP / PBP (W)65 Wverified
Turbo / MTP (W)65 Wverified
Cooling recommendationWraith Stealthverified
AVX-512Noderived
AVX-VNNI (AI inference)Noderived
NPU (TOPS)0derived
Strengths:
- + Cost-effective for headless mining rigs
Weaknesses:
- − Low processing power (sufficient for task, but minimal)
5
60Component Score
I/O Backbone
Identification
ManufacturerASRockverified
ModelB550 Phantom Gaming 4verified
Revision / SKUB550 Phantom Gaming 4verified
ChipsetAMD B550verified
SocketAMD AM4verified
Form factorATXverified
Release year2020verified
Voltage regulation (VRM)
Total VRM phases8 Power Phaseverified
Vcore phases8verified
MOSFET current (A)not available
VRM heatsinkYesverified
CPU power connectors1 x 8-pin 12V, 1 x 24-pin ATXverified
Storage
Memory typeDDR4verified
RAM slots4verified
Max memory (GB)128 GBverified
Max memory OC (MT/s)4733+ MT/sverified
Memory channels2verified
EXPO / XMPXMPverified
Expansion (PCIe & M.2)
PCIe x16 slots2verified
PCIe gen (primary)PCIe 4.0verified
M.2 slots2verified
M.2 max genPCIe Gen4verified
SATA ports6verified
PCIe x1 slots2verified
Ports & network
LANRealtek RTL8111Hverified
LAN speed (Gbit)1 Gbpsverified
WLANNoneverified
Rear USB (count)8verified
Rear USB-CNoneverified
USB4 / ThunderboltNoneverified
Audio codec / DACRealtek ALC1220verified
Debug LED / POST codePost Status Checkerverified
BIOS flashbackNoverified
Strengths:
- + Solid stability
- + Supports necessary PCIe bifurcation/riser configurations
Weaknesses:
- − Limited PCIe lane count for professional-scale clusters
6
Open-Air Frame mit 6 Caselüftern, Abluft nach außen
Cooling / Ventilation
User input • limited verification
41Component Score
Cooling concept
Cooling conceptOpen-air frame with active fan-assisted airflowverified
Heat dissipation (W)Dependent on installed hardwarederived
Environmental tolerance (°C)0-35 Cderived
Operation
Noise level (dBA)50-70 dBAderived
Hashrate densityLowderived
Long-term stabilityHigh if ambient temperature is controlledderived
Dust/maintenance protectionNoneverified
Site suitability
Site suitabilityHome, Garage, Officederived
Waste heat utilizationNonederived
Electricity price & source
Electricity price (€/kWh)0.12 €/kWhverified
Power sourceCommercial gridderived
Electricity price competitivenessCompetitive for high-efficiency hardwareverified
Economics
Daily electricity costsApprox. 9.94 € for a 3450 W ASICderived
Break-even electricity price0.12-0.15 €/kWh for current-gen hardwareverified
Profit marginVariable based on network difficultyverified
ROI assessmentHighly dependent on hardware efficiency and BTC priceverified
Risk & verdict
Profitability verdictProfitable for high-efficiency ASICs, marginal for older unitsverified
Difficulty/market riskHigh risk due to increasing network hashrate and difficultyverified
8
Smart Upgrade Recommendations
Upgrade Dashboard
All actions are visible at a glance: critical foundation fixes first, then sensible performance stages and premium options.
4 visible sections
3 comparable stages
Efficiency
Upgrade Path: Maximale Effizienz (J/TH)
Niedrigste J/TH ist der einzige langfristige Profit-Hebel im Mining. Diese Anker liefern die beste Effizienz.
Best Recommendation
Ausgewogen
- Hardware
After (new)
Antminer S21 XP- ~13,5 J/TH, 270 TH/s
Total budget: ab ~3.000 €
High-End
- Hardware
After (new)
Antminer S23 Hydro- ~9,5 J/TH, 580 TH/s (Wasserkühlung)
Total budget: ab ~5.000 €
Performance
Upgrade Path: Maximaler Profit & ROI
Bei ~5,53 € Stromkosten/Tag entscheidet der Deckungsbeitrag pro Terahash über den ROI. Diese Anker maximieren Ertrag minus Stromkosten.
Price/Performance
Budget
- Hardware
After (new)
Antminer S21- ~17,5 J/TH, 200 TH/s — günstiger Einstieg
Total budget: ab ~1.900 €
Best Recommendation
Ausgewogen
- Hardware
After (new)
Antminer S21 XP- ~13,5 J/TH, 270 TH/s — bester €/TH-Kompromiss
Total budget: ab ~3.000 €
High-End
- Hardware
After (new)
Antminer S23 Hydro- ~9,5 J/TH, 580 TH/s — höchster Deckungsbeitrag/TH
Total budget: ab ~5.000 €
Stability
Upgrade Path: Hashrate-Dichte & Skalierung
Bei 6 Einheiten begrenzen Stellfläche, Stromkreise und Abwärme das Wachstum. Höhere TH pro Einheit und dichtere Kühlung skalieren am besten.
Price/Performance
Budget
- Hardware
After (new)
Antminer S21 Pro- 234 TH/s je Einheit, kompaktes Luftmodell
Total budget: ab ~2.500 €
Best Recommendation
Ausgewogen
- Hardware
After (new)
Antminer S23 Hydro- 580 TH/s je Einheit
- Hydro-Verrohrung
Total budget: ab ~5.000 €
High-End
- Kühlung~+5%
After (new)
Immersion-Cooling Tank (EZ Blockchain / Bitcooler)- höchste TH/Stellfläche, staubfrei
- Abwärme nutzbar
Total budget: Setup ab ~1.500 €
Capacity
Upgrade Path: KI-Zweitnutzung (Vermietung)
GPU-Rig mit 144 GB VRAM gesamt (Tier „medium"). ~$9/Tag über dezentrale KI-Vermietung — Mitte 2026 oft profitabler als reines Mining.
Price/Performance
Budget
- Hardware
After (new)
Clore.ai Hosting- einfachster Einstieg, geringe Einrichtungshürde
Total budget: keine Hardware-Kosten
Best Recommendation
Ausgewogen
- GPU~+25%
After (new)
Vast.ai GPU-Vermietung- größter Marktplatz, höchste Auslastung für CUDA-GPUs
Total budget: keine Hardware-Kosten
High-End
- Hardware
After (new)
io.net Worker + Vast.ai kombiniert- Multi-Plattform für maximale Auslastung/Diversifikation
Total budget: keine Hardware-Kosten
⚠ Recommendations based on AI analysis and internet research. All information without guarantee.
* Hardware links are Amazon affiliate links (advertising). Only purchasable product terms are linked, not diagnosis or reasoning text. Recommendations are chosen for technical fit, never by commission level.
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This analysis was generated by AI with up-to-date internet research. All information without guarantee. Please verify critical details independently.