External GPUs (eGPUs) have been a hot topic in the gaming community, promising to enhance the performance of desktop gaming PCs. However, a closer look reveals that the current state of eGPU setups may not be as practical as initially thought. Let's delve into the key factors that make eGPUs a less attractive option for gamers.
The Interface Battle: Thunderbolt vs. OCuLink
When it comes to connecting eGPUs to PCs, Thunderbolt and OCuLink are the primary interfaces that gamers rely on. Both interfaces offer four PCIe lanes, but they differ significantly in terms of performance and latency. While Thunderbolt is widely adopted and versatile, it introduces latency that can adversely affect gaming performance. On the other hand, OCuLink boasts higher bandwidth and lower latency but falls short in terms of port availability and power support.
Bottlenecking Woes with High-End GPUs
One of the major drawbacks of eGPU setups is the bottlenecking issue that plagues higher-end GPUs like the RTX 4090. In four-lane eGPU setups, these top-of-the-line GPUs suffer from stuttering and show diminishing returns compared to desktop PCIe x8 or x16 connections. This bottlenecking effect severely limits the potential performance gains that gamers expect from eGPUs.
Efficiency and Cost Considerations
When it comes to eGPU enclosures, Thunderbolt setups are often less efficient and come with a higher price tag. Conversely, an OCuLink setup paired with midrange GPUs like the RTX 4060 can offer decent 1440p gaming performance at a more reasonable price point. This makes OCuLink a more appealing option for gamers looking to balance performance and cost.
In conclusion, while the idea of using an eGPU to boost your gaming PC's performance may sound enticing, the current landscape of eGPU setups presents several challenges. From quality and performance issues to cost and compatibility concerns, there are significant hurdles that limit the practicality of eGPUs for gaming PCs. As technology continues to evolve, we may see improvements in eGPU setups in the future. However, for now, gamers may need to weigh the pros and cons carefully before diving into the world of external GPUs.