AM5 Cpu Upgrade for gaming from AM4

Hey everyone,

I’m currently in the middle of a pretty big upgrade and I’d really appreciate some input from people who have hands-on experience with the latest AM5 chips, especially for high-end gaming and emulation.

I’m moving from an AM4 system with a Ryzen 9 5900X, 32GB (4x8) DDR4 3600 CL16 G.Skill RAM, and an RTX 3070 (factory OC ~1920 MHz core), to a new AM5 build. I’ve already locked in most of the parts: a Gigabyte RTX 5080 AORUS MASTER ICE 16GB, 32GB (2x16) TeamGroup T-Force Delta RGB DDR5 6000 CL28, and an ASUS ROG STRIX B850-E GAMING WIFI motherboard. The only piece I’m still unsure about is the CPU.

This build is heavily focused on high-end gaming at 3440x1440 ultrawide, max settings, with ray tracing and even path tracing where possible. I play a mix of very GPU-heavy titles like Alan Wake 2, Silent Hill 2 Remake and God of War Ragnarok, but also more mixed or CPU-sensitive games like Cyberpunk 2077 (RT Ultra), Starfield and Six Days in Fallujah. On top of that, I spend a lot of time on CPU-heavy games like ARMA 3 and ARMA Reforger, where large AI counts can really hammer the CPU.

A big part of my usage is also emulation. I regularly use RPCS3 (probably the most demanding one for me), Xenia Canary, Ryujinx and shadPS4. I tend to run games at 1440p or even 4K, and titles like God of War Ascension, the original Uncharted trilogy or Metal Gear Solid IV really benefit from strong single-core performance and, from what I understand, AVX-512 support (which is quite important to me), along with overall single-thread efficiency and cache.

Because of all that, I’ve narrowed my CPU options down to the Ryzen 7 9800X3D, Ryzen 7 9850X3D, Ryzen 9 9900X3D and Ryzen 9 9950X3D. From what I’ve seen, the X3D chips are ideal for gaming, but I’m not sure how much I’d benefit from going up to the Ryzen 9 models versus sticking with an 8-core X3D, especially considering thermals and diminishing returns.

Cooling is actually one of my biggest concerns. I’m using a be quiet! Pure Loop 2 FX 360mm AIO, and I’d really prefer to run the CPU at stock with PBO enabled, without undervolting or manually tuning curves. What worries me is whether this cooler will be enough to keep temps under control during worst-case scenarios like heavy RPCS3 loads that slam a few cores, or CPU-bound situations in ARMA with tons of AI entities.

So I guess what I’m really trying to figure out is which of these CPUs makes the most sense for my use case in terms of performance vs heat. If anyone here is running similar setups, I’d love to hear your real-world temperatures with a 360mm AIO, especially under sustained gaming or emulation loads, and whether the Ryzen 9 X3D chips are actually worth it over the Ryzen 7 ones for this kind of workload.

Thanks in advance — really interested to hear your experiences before I pull the trigger on the CPU.

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I still haven’t bought a 9000 series AMD CPU, but I have several systems running the 7000 series AMD CPUs and they use the X3D versions. You are already sold on the X3D so that’s good. I suggest you look at what deals are out there for the 9000 series X3D CPUs and I bet the 9800X3D will be an excellent value now that the Ryzen 9 version is out there. The thing is however, you also want this computer to run a serious workload too. That suggests that you might be happier with the most powerful CPU you can get in the X3D series, regardless of price.