I recently bought a Ryzen 7 5800X3D for $300. My current system has the 5800X3D, an RX 7800 XT, 32GB of DDR4-3200 memory, a 1TB SSD, a 1TB NVMe drive, and a 1440p 165Hz monitor. The processor is cooled by a 360mm AIO mounted at the front because my case does not support another placement option.
I can currently build an AM5 system through a bundle deal with a Wi-Fi B850 motherboard, Ryzen 7 9800X3D, a free 240mm AIO, 32GB of Corsair DDR5 memory, and a Montech TG3 case for about $950 before tax. After returning the 5800X3D, selling my existing memory, 5600G, old case, and the bundled cooler, I estimate the upgrade would cost roughly $100–$200 net, although that depends on how quickly and successfully the parts sell.
Since AM5 is expected to support several future CPU generations, this could be a more upgradeable platform. However, my RX 7800 XT may limit performance at 1440p, so I am unsure how much the 9800X3D would actually improve gaming right now. Would this be a worthwhile upgrade, or should I keep the 5800X3D and put the money toward a stronger graphics card later?
4 Answers
The AM5 system makes more sense if you plan to buy a much faster graphics card later or want the convenience of a newer platform. It gives you a longer upgrade path, but with your current GPU, the immediate gaming gains will be limited. If the final cost really stays near $100, it is a reasonable long-term move; otherwise, I would wait.
I would keep the 5800X3D. It is still an excellent gaming processor, and with an RX 7800 XT at 1440p, you probably will not see a major improvement from moving to the 9800X3D. The money would have a bigger impact when put toward a future GPU upgrade.
The 9800X3D is a substantial CPU, but whether it is worth buying depends on your target frame rates and future plans. Someone pairing it with a high-end GPU could benefit much more than someone keeping an RX 7800 XT. I would only make the switch if you are confident the net cost is genuinely low and you want the newer platform for several years.
A platform upgrade is most useful when the current CPU is holding back your graphics card. The 5800X3D can still drive an RX 7800 XT very well, especially at 1440p, so benchmark gains may not translate into noticeably better gameplay. Also factor in the time spent listing, packing, and shipping all the parts.

The estimated resale value may also be optimistic, so the upgrade could end up costing more than expected. Selling several older parts takes time and effort, too.