My son is using an older gaming PC built around a Ryzen 7 3800X and an RX 580. The original RTX 3060 that was in the system died, so I'm looking for a reasonably priced replacement that can deliver better than 50 FPS in modern games, ideally at 1440p and sometimes 4K with ray tracing. The system has a 750W power supply and plenty of physical space for a larger card. I'm expecting to upgrade the rest of the system in roughly three to five years, so I don't want to overspend right now. I'm currently comparing a refurbished RTX 3080 12GB for $459 with a refurbished RTX 4070 12GB for $733. Is the 4070 worth paying nearly $275 more, or would the 3080 offer nearly the same gaming performance for much better value? Are there better alternatives around this price, such as a newer AMD card with more VRAM?
3 Answers
The RTX 4070 is more efficient and has newer features, but $733 is difficult to justify when the 3080 is available for $459. Unless the refurbished 4070 includes an unusually good warranty or you specifically need its lower power draw and frame generation, put the money toward a future CPU, motherboard, or memory upgrade. Also make sure the system has at least 32GB of DDR4, since that may help overall gaming smoothness more than paying the premium for the 4070.
Before buying either refurbished 12GB card, I’d also check current prices on newer 16GB options such as the Radeon RX 9070 or 9070 XT, and possibly the 9070 GRE if it’s available near $500. They can offer more VRAM and better long-term value, although Nvidia may still be preferable if ray tracing, DLSS, or specific creator software is important. The Ryzen 7 3800X could limit performance at very high frame rates, but it should still be usable for 1440p gaming.
Between those two, I’d choose the refurbished RTX 3080 12GB. At $459, it offers performance close to the RTX 4070 and is substantially cheaper. The main drawbacks are higher power consumption, more heat, and no modern frame-generation support, but the 750W PSU should be adequate if it’s a good-quality unit. For ray-traced gaming under $600, it’s a strong value.

That makes sense. The cheaper price is appealing, especially since I’m planning a larger platform upgrade later instead of trying to make this system last indefinitely.