2666 or 3200mhz for RAM?
2666 or 3200mhz for RAM?
Your setup looks solid, but swapping to 3200MHz RAM might not be straightforward. Your current system runs an i5 9600K and has a Z390-A Pro motherboard, which supports higher speeds. However, the RAM speed is limited by the motherboard's capabilities—check if your motherboard officially supports 3200MHz. If not, you may face compatibility issues or reduced performance. It’s safer to stick with your current configuration unless you confirm support.
The performance improvement will be approximately 5%. You may return the kit to receive a 3200 version or have it clocked manually. However, the 3200 guarantee isn't assured as it depends on the ICs and silicon quality. Edited June 29, 2020 by TofuHaroto
Generally, well-made 2666MHz chips from trusted manufacturers can be boosted to around 3000 with proper tuning, voltage, and attention. In some cases, they may outperform a 3200 if the delays are minimal. I wouldn’t rush into replacing it unless you can find comparable performance at a similar price for a 3200 model.
Uncertain outcome; given the current pace of 2666, they likely rely on low-end chips such as budget Hynix variants that aren't reliable for overclocking.