I recently bought an RX 9070 XT and plan to replace my 1080p display with a 1440p OLED running at 144Hz or higher. My current system has a Ryzen 7 5700X3D, Gigabyte B550 AORUS Elite V2, 32GB of DDR4-3200 CL16, a Corsair RM850x, and a Crucial T500 PCIe 4.0 NVMe SSD. I mainly play AAA and AA games, although I play a wide variety of titles.
I am considering moving to a Ryzen 7 7800X3D with 32GB of DDR5-6000 CL30 and a Gigabyte X870 AORUS Elite WIFI7. I am less concerned with chasing extremely high refresh rates than I am with whether the current platform could limit the RX 9070 XT, especially through poor 1% lows, stuttering, or inconsistent frame times. Would the 7800X3D provide noticeably better frame pacing and consistency at 1440p, or would the improvement mostly be limited to CPU-bound games and higher average FPS?
I am also wondering whether running the PCIe 5.0 graphics card in the B550 board's PCIe 4.0 slot would affect gaming performance, 1% lows, or frame-time consistency. Finally, I would like to know whether the upgrade cost makes sense, considering that I could sell my 5700X3D and DDR4 kit but would still need new memory and a motherboard. If staying on AM4 is the better choice, would upgrading from the 5700X3D to a 5800X3D be worthwhile?
5 Answers
A 5800X3D upgrade does not make much sense from a 5700X3D. The performance gap is too small to notice in normal use, so buying one would mostly spend money for a marginal result. Keep the current processor unless you identify a specific game where it is clearly holding you back.
Try the RX 9070 XT and new monitor first. If your games are already smooth, moving from AM4 to AM5 would be an expensive side-grade in practical terms. You can always revisit the platform later if monitoring shows the CPU is consistently limiting performance, but there is no need to replace it preemptively.
The 5700X3D can still be slower in games that rely heavily on a few fast CPU cores and do not benefit much from its extra cache. In those titles, a newer X3D processor could improve FPS or minimums, but the difference will not be transformative across a typical game library. It is mainly worth considering if you regularly play CPU-intensive competitive, simulation, or strategy games and can justify the cost.
PCIe 4.0 is not a meaningful limitation here. Even much older PCIe generations generally have enough bandwidth for gaming GPUs, so PCIe 4.0 should not cause noticeable losses in average FPS, 1% lows, or frame pacing with an RX 9070 XT. The bigger variable is whether a particular game is CPU-bound.
Keep the 5700X3D and put the money toward the 1440p OLED. At that resolution the RX 9070 XT should do the heavy lifting, and the move to a 7800X3D would be a relatively small improvement in most AAA games. A good 240Hz 1440p OLED could make a much more noticeable difference to the experience.
A system with this CPU and GPU already handles 1440p OLED gaming well. There is no strong reason to replace the board and memory before trying the new monitor first.