I built this PC in December 2020, and it still performs well, but I'm starting to notice its age. The specs are a Ryzen 5 5600X, MSI MAG X570 Tomahawk WiFi, 16GB of G.Skill Trident Z RGB DDR4-3600 CL18 in a 2x8GB configuration, and an EVGA RTX 3070 XC3 Ultra 8GB. I play mostly at 1080p and 165Hz, although gaming is less important to me now. My main uses are coding, AI-assisted work, and heavy browser multitasking.
During demanding use, memory usage frequently reaches the high 80s or 90s, while CPU usage varies considerably. Should I upgrade to 32GB now for a smoother experience, or wait until the whole system needs replacing? If I upgrade, would it be better to add another matching 2x8GB kit or replace the current memory with a matched 2x16GB kit? I've heard that four sticks can be less reliable at DDR4-3600 on AM4.
Since AM4 and DDR4 are older platforms, when would a full rebuild make sense? I'm more interested in the smartest upgrade path than in saving money.
4 Answers
I’d move to 32GB now. You probably won’t see a major FPS increase, but having more memory should make heavy multitasking and switching between games, development tools, and browser tabs feel noticeably smoother. A matched 2x16GB DDR4-3600 CL18 kit is the safer option than adding another 2x8GB kit. Four sticks can work, but they’re more likely to require lower speeds or manual memory tuning on AM4.
The high memory usage is the more important clue here. Windows can start compressing memory or paging to storage before the usage graph reaches 100%, which can cause the sluggishness you notice when returning to a browser with lots of tabs. Your 5600X and RTX 3070 are still capable, so a memory upgrade is a reasonable targeted improvement rather than a reason to rebuild the entire system.
There’s no need to rush from AM4 just because newer memory standards exist. A 2x16GB DDR4 kit could remain useful for several years, and moving to a new platform would make more sense when you need a substantial CPU or GPU improvement rather than simply because DDR4 is older. If you buy a new kit, check the motherboard’s memory compatibility list and be prepared to enable the rated profile or make a small manual adjustment if necessary.
A CPU that fluctuates between roughly 50% and 90% usage is not automatically a problem, especially across different games and workloads. At 1080p, the 3070 also remains fairly capable. I’d only plan a full rebuild when a specific component becomes the limiting factor for the performance you want, such as the CPU failing to maintain your target frame rate or the GPU no longer handling your games at acceptable settings. The age of the platform alone isn’t a good trigger.
That makes sense. I’m mainly noticing the memory pressure outside games, so I’ll treat the RAM upgrade separately from the eventual rebuild.