The article discusses the limitations of using external graphics processing units (eGPUs) compared to traditional gaming PCs. Here are the main points covered:
Overview of eGPUs
- Definition: eGPUs are external graphics processors connected to laptops or handheld gaming devices, typically via Thunderbolt or USB4. They allow laptops with lower specs to run more demanding games.
- Performance Caveats: While eGPUs can enhance gaming performance, they generally deliver slower performance over Thunderbolt compared to being installed directly in a desktop.
Performance Loss
- Bandwidth Limitations: Thunderbolt 4 provides 40Gbps, which is significantly less than the bandwidth available in a desktop PCIe 4.0 x16 slot.
- Real-World Impact: Tests show a performance loss ranging between 7-32% compared to desktop setups. Although performance losses can decrease at higher resolutions (like 4K), rendering can be slower when using a laptop display.
Cost and Compatibility
- Enclosure Costs: The Razer Core X V2 (an eGPU enclosure) is sold separately, requiring the purchase of a power supply and graphics card, making it often more expensive than a budget gaming PC.
- Compatibility Issues: Not all laptops, especially those with Apple Silicon, support eGPUs, limiting options for consumers.
- Alternatives: OCuLink provides a newer, faster method of connecting an eGPU by running bare PCIe over a cable, but it sacrifices some convenience compared to Thunderbolt.
Conclusion
The article suggests that for those looking to boost gaming performance without breaking the bank, investing in a basic gaming PC might be a smarter choice than assembling an eGPU setup given the performance limitations, costs, and compatibility issues associated with eGPUs.
