I upgraded my Ryzen 7 3700X, GTX 1660 Super, and 16GB RAM system in December 2025 with an RTX 5070 Ti, a 1TB SSD, and one 16GB DDR5 stick. My current memory is still 2x8GB DDR4-3200, since the DDR5 module cannot be used with my existing AM4 motherboard. The 3700X feels fine for development, multitasking, and general use, but at 1440p ultrawide gaming I often see the 5070 Ti being heavily bottlenecked. A Ryzen 7 5800X3D is too expensive locally, while a Ryzen 5 9600X or Ryzen 7 9700X with a suitable AM5 motherboard costs less. Should I move to AM5 now, or keep the 3700X until a future platform such as AM6? If I upgrade, would running the 16GB DDR5 stick by itself be acceptable temporarily, or should I buy a dual-channel kit immediately?
3 Answers
Make sure the memory situation is clear: your current 2x8GB DDR4 kit works with the 3700X, but the unused 1x16GB DDR5 stick requires an AM5 motherboard. You can boot with one DDR5 stick, but 32GB in dual channel is strongly preferable for development, multitasking, and modern games. I would plan to buy a matched 2x16GB kit rather than rely on the single module for long.
If the prices are similar, I would choose the Ryzen 5 9600X and move to AM5 rather than buying an overpriced 5800X3D. A single 16GB DDR5 stick will reduce performance because it runs in single channel, but it is usable as a temporary solution. You can add a matching module or replace it with a proper dual-channel kit later, while also keeping the newer platform and future upgrade options.
The biggest issue is that the 3700X is holding back the 5070 Ti, especially at high refresh rates and in CPU-heavy games. If you stay on AM4, the 5800X3D would be the best gaming upgrade, but at your local price it does not make much sense. The 9600X with an AM5 board is a more sensible long-term purchase if the total cost is close.
That is what I was thinking too—the 5800X3D costs around $395 locally, while the 9700X is about $315, so switching platforms seems more worthwhile.
Right now I am using 2x8GB DDR4-3200 with the 3700X; the single 16GB DDR5 stick has been sitting unused.