When evaluating the current landscape of blockchain technology, it’s essential to understand how different Layer 1 protocols perform across key metrics like transaction speed, scalability, node distribution, and energy consumption. These factors not only influence developer choice but also affect user experience and long-term adoption.
In this analysis, we compare six major Layer 1 blockchains: Ethereum, Cardano, Solana, Avalanche, Algorand, and Internet Computer. Each offers unique features and trade-offs, making them suited to different applications—from DeFi and NFTs to decentralized computing and Web3 services.
Transaction Speed
Transaction speed is commonly measured in transactions per second (TPS) and time to finality—the point where a transaction is irreversible.
Ethereum
Ethereum typically processes 15–20 TPS, with a finality time of around 14 minutes. High network congestion can further slow transactions and increase gas fees. Future upgrades like sharding and Layer 2 solutions aim to improve these metrics.
Cardano
Although Cardano claims a theoretical capacity of 250 TPS, real-world usage currently sits around 2 TPS. Finality ranges from 10 to 60 minutes. Its upcoming Hydra Layer 2 solution aims to significantly boost performance.
Algorand
Algorand targets 1,200–3,000 TPS in theory but currently operates at around 20 TPS. It offers fast finality, settling transactions in 4–5 seconds.
Solana
Solana is designed for high throughput, handling 2,000–3,000 TPS in practice against a theoretical maximum of 65,000 TPS. Finality is achieved in 21–46 seconds.
Avalanche
Avalanche’s testnet supports up to 4,500 TPS, with a production goal of 20,000 TPS. Its C-Chain currently processes about 9 TPS, with finality at 2–3 seconds.
Internet Computer
Internet Computer supports up to 11,500 TPS for update calls and over 250,000 query calls per second. It achieves finality within one second, making it one of the fastest blockchains.
Scalability
A blockchain’s ability to scale determines how well it can handle growth in users and transaction volume.
Ethereum and Cardano
Both Ethereum and Cardano currently face scalability challenges. Ethereum is transitioning to proof-of-stake (PoS) and sharding to improve capacity. Cardano plans to integrate Hydra for on- and off-chain processing.
Solana and Avalanche
Solana has experienced network outages during high demand, raising concerns about its stability. Similarly, Avalanche relies on external storage solutions like Arweave, which introduces centralization risks.
Algorand
Algorand uses a Pure Proof-of-Stake (PPoS) model and verifiable random functions (VRF) to achieve higher scalability and faster consensus.
Internet Computer
Internet Computer offers near-infinite scalability through subnet blockchains. Each subnet processes transactions independently, allowing the network to expand seamlessly by adding new nodes.
Node Distribution and Cloud Reliance
Decentralization is reflected in the number of nodes and their independence from centralized cloud providers.
- Ethereum: Runs about 6,000 nodes, with an estimated 70% relying on AWS.
- Cardano: Has 3,173 nodes but lacks clarity on cloud usage.
- Solana: Uses 1,603 nodes, mostly hosted on centralized services like AWS.
- Avalanche: Comprises 1,243 nodes, many of which are on AWS.
- Algorand: Approximately 2,000 nodes, also dependent on cloud infrastructure.
- Internet Computer: 443 nodes running across independent data centers without reliance on centralized cloud providers.
👉 Explore decentralized network strategies
Energy Efficiency
Blockchain sustainability is increasingly important. Here’s how each chain compares in energy use per transaction:
- Ethereum (PoW): 238 kWh
- Cardano: 0.5 kWh
- Solana: 0.00051 kWh
- Avalanche: 0.00476 kWh
- Algorand: 0.0027 kWh
- Internet Computer: 1.3 kWh (including on-chain execution without outsourcing)
Ethereum’s shift to PoS is expected to reduce its energy consumption significantly.
Cross-Chain Bridges
Bridges enable interoperability between blockchains but can introduce security risks.
- Cardano uses Force Bridge and Bondly.
- Avalanche uses Avalanche Bridge.
- Algorand plans to integrate London Bridge and Skybridge.
- Solana relies on Wormhole, which suffered a $320M hack in 2022.
- Internet Computer supports trustless bridges like Terabethia and is integrating natively with Bitcoin and Ethereum.
User Key Management
Simplifying user authentication is critical for mass adoption.
Most blockchains—including Ethereum, Solana, Avalanche, Cardano, and Algorand—require users to manage private keys and crypto wallets. Some integrate with Web2 accounts (e.g., via Google or Facebook), but this compromises decentralization.
Internet Computer offers a more user-friendly approach with Internet Identity, allowing biometric authentication and eliminating the need for users to hold tokens for gas fees.
Frequently Asked Questions
What is transaction finality?
Finality is the time it takes for a transaction to become irreversible on the blockchain. Faster finality means better user experience and higher security.
Which blockchain is the most scalable?
Internet Computer and Algorand currently lead in scalability due to their subnet architecture and efficient consensus mechanisms. Ethereum’s upcoming upgrades may improve its scalability.
Are cross-chain bridges safe?
While bridges enhance interoperability, they are often vulnerable to hacks. It’s essential to use well-audited bridges and understand the risks involved.
How do I start building on a Layer 1 blockchain?
Most Layer 1 networks offer extensive documentation, SDKs, and testnets. 👉 Get advanced development methods
Which chain is best for DeFi?
Ethereum remains the largest DeFi ecosystem, but Solana, Avalanche, and Internet Computer are gaining traction due to lower fees and higher throughput.
Can blockchain become truly eco-friendly?
Yes—proof-of-stake and other consensus mechanisms already consume significantly less energy than proof-of-work. Continued innovation will further reduce environmental impact.
Conclusion
Each Layer 1 blockchain offers a unique mix of speed, scalability, and decentralization. While Ethereum continues to dominate in developer activity and ecosystem size, emerging platforms like Internet Computer, Algorand, and Solana are pushing the boundaries of performance and user experience.
When choosing a blockchain, consider your priorities: whether it’s transaction speed, cost, environmental impact, or ease of use. The right platform depends on your specific use case—whether you’re building a dApp, launching an NFT, or developing a DeFi protocol.