Cost-Analysis.md•3.88 kB
# 💰 Cost Analysis: Pi Farms vs Cloud
#cost-analysis #roi #infrastructure #comparison
## Executive Summary
> **84% cost savings** over 3 years by using Raspberry Pi farms instead of cloud infrastructure for browser automation
## 📊 Detailed Cost Breakdown
### Hardware Costs (10-Node Farm)
| Component | Quantity | Unit Price | Total |
|-----------|----------|------------|-------|
| Raspberry Pi 5 (8GB) | 10 | $80 | $800 |
| Official Power Supply | 10 | $15 | $150 |
| SanDisk 128GB A2 SD | 10 | $20 | $200 |
| Gigabit Switch | 1 | $50 | $50 |
| Cat6 Cables | 10 | $5 | $50 |
| Cooling/Cases | 10 | $5 | $50 |
| **Total Hardware** | | | **$1,300** |
### Cloud Costs (Equivalent Capacity)
| Service | Specs | Monthly | Annual |
|---------|-------|---------|---------|
| AWS t3.medium | 2 vCPU, 4GB RAM | $30 | $360 |
| 10 instances | | $300 | $3,600 |
| Data transfer | 100GB/month | $9 | $108 |
| Storage (EBS) | 30GB × 10 | $30 | $360 |
| **Total Cloud** | | **$339** | **$4,068** |
## 📈 Multi-Year Comparison
```
Year 1:
- Pi Farm: $1,300 (hardware) + $131 (power) = $1,431
- Cloud: $4,068
- Savings: $2,637 (65%)
Year 2:
- Pi Farm: $131 (power only) = $131
- Cloud: $4,068
- Savings: $3,937 (97%)
Year 3:
- Pi Farm: $131 (power) = $131
- Cloud: $4,068
- Savings: $3,937 (97%)
3-Year Total:
- Pi Farm: $1,693
- Cloud: $12,204
- Total Savings: $10,511 (86%)
```
## ⚡ Power Consumption Analysis
### Raspberry Pi Farm
- **Per Pi**: 15W maximum
- **10 Pis**: 150W continuous
- **Daily**: 3.6 kWh
- **Annual**: 1,314 kWh
- **Cost**: $131/year @ $0.10/kWh
### Cloud Infrastructure
- **Direct power**: ~100W per instance
- **Cooling overhead**: 50% (PUE 1.5)
- **Total**: ~1,500W for equivalent
- **Annual**: 13,140 kWh
- **Environmental cost**: 10× higher
## 💸 Hidden Cloud Costs
Often overlooked expenses:
1. **Egress charges**: $0.09/GB after free tier
2. **Support plans**: $100-$1,000/month
3. **Reserved instance commitments**: Lock-in
4. **Overprovisioning**: Paying for idle time
5. **Compliance costs**: Additional services
## 🎯 ROI Calculations
### Small Business (5 Pis)
```
Investment: $650
Cloud alternative: $2,034/year
Break-even: 3.8 months
5-year savings: $9,520
```
### Growing Startup (20 Pis)
```
Investment: $2,600
Cloud alternative: $8,136/year
Break-even: 3.8 months
5-year savings: $38,080
```
### Enterprise (100 Pis)
```
Investment: $13,000
Cloud alternative: $40,680/year
Break-even: 3.8 months
5-year savings: $190,400
```
## 📊 Use Case Cost Comparisons
### SEO Monitoring (1,000 keywords/day)
| Solution | Monthly Cost | Setup Time |
|----------|--------------|------------|
| SEO Tools API | $500-$2,000 | Minutes |
| Cloud Scrapers | $300-$500 | Hours |
| **Pi Farm (5)** | **$54** | 1 Day |
### E-commerce Price Tracking
| Solution | Monthly Cost | Reliability |
|----------|--------------|-------------|
| Commercial API | $1,000+ | 99% |
| Cloud Functions | $200-$400 | 95% |
| **Pi Farm (10)** | **$108** | 99.9% |
## 🔧 Additional Considerations
### Pros of Pi Farms:
- ✅ One-time investment
- ✅ No vendor lock-in
- ✅ Predictable costs
- ✅ Data sovereignty
- ✅ Custom modifications
### Pros of Cloud:
- ✅ No upfront cost
- ✅ Instant scaling
- ✅ Managed services
- ✅ Global regions
- ✅ Enterprise support
## 💡 Hybrid Approach
Best of both worlds:
```
- Pi Farm: 80% of workload (predictable tasks)
- Cloud: 20% burst capacity (peak times)
- Result: 70% cost reduction with flexibility
```
## 🎯 Decision Matrix
| If you need... | Choose... |
|----------------|-----------|
| < 10 agents, consistent load | Pi Farm |
| 10-100 agents, own location | Pi Farm |
| Global distribution | Cloud |
| Burst scaling (10x) | Hybrid |
| Maximum cost savings | Pi Farm |
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**Next**: [[Implementation-Guide]] - Start building your farm
**Related**: [[Overview]] | [[Architecture]]