I'm putting together a new PC and I'm basing everything on the RAM I currently have, which is 32GB of CORSAIR Vengeance RGB PRO DDR4 running at 3200MHz. I recently got a new i7 12700KF and a Gigabyte Z790 motherboard on sale, plus I'm waiting on an RTX 5070. The issue is, even though my RAM is supposed to run at 3200MHz, in the BIOS it's been stuck at around 2100MHz, and I've only managed to crank it up to 2400MHz manually. I think it's probably my older motherboard holding it back since I'm not even sure what it is, except that it's LGA1200. I'm wondering if sticking with the 3200MHz will make a big difference in gaming performance, especially since I'm contemplating if I should have invested in DDR5 or higher-speed DDR4. I'm trying to manage my budget since I still need to get an SSD, AIO cooler, and power supply. Thanks for any insights!
4 Answers
It sounds like your current motherboard is indeed limiting your RAM speed. If you can't go beyond 2400MHz, just wait until your new setup is complete. The Z790 board should easily allow you to run your RAM at 3200MHz. Don’t stress too much about DDR5 right now—your new build should handle your gaming needs just fine without it.
Your rig will handle 3200MHz just fine once you get everything set up. In general, higher RAM speeds can reduce stutters and improve the overall smoothness in gameplay, particularly in more demanding titles. As for your thoughts on DDR5, keep in mind that there are diminishing returns beyond certain speeds; 3200MHz is solid for gaming right now. Save your money for other upgrades if you need to.
You definitely need to enable XMP in your BIOS to hit that 3200MHz on your RAM. It can make a noticeable difference, especially in games that are sensitive to memory bandwidth. While some games might not show much improvement, others will definitely feel smoother with higher speeds, particularly in terms of minimum FPS during action scenes.
Honestly, 2400MHz is pretty low, and you should definitely be able to bump it up to 3200MHz on your new motherboard. The older i5 might not have benefited much from higher speeds, but your new i7 will make better use of the RAM. Don't worry about getting DDR5 unless you plan to really push your system to the max. Just get everything set up, and you should see a nice improvement!

Thanks for the input! It definitely helps to hear that I can stick with the current RAM without breaking the bank. I’m excited to see how it performs!