I've noticed RAM prices are rising every week, and I'm trying to figure out if I really need 6000 CL30 RAM for my 9800X3D build. Would using 6400 CL32 RAM be that bad if it's cheaper? I've read mixed things about stability unless I tweak settings. How much worse would it be without tweaking? I've also heard that a 1:1 ratio is best, but how significant is the performance difference if I'm not using 1:1? If it's only a small difference, would it be okay to use the RAM as it comes? I'm still a bit confused if using 6400 out of the box would lead to crashes or if it's just slightly slower compared to 6000. Any insights would be helpful!
5 Answers
Typically, 6000 CL30 just works well with most CPUs without any tweaks. If you go for 6400, you might have to configure it properly to avoid lag. But honestly, if your RAM is at 6000 MHz, it already exceeds bandwidth between the CPU and the memory, so going above 6000 might not even make sense!
Look, 6000 CL30 is great for Ryzen systems right now, but if you get 6400 RAM and run it without tuning, it could throw off the infinity fabric sync, which can actually hurt performance. I've got a 6400 CL34 kit and I just set it to run at 6000 CL30 for simplicity, and the performance is still solid.
6000 CL30 is like the sweet spot for value at the moment. The performance difference with faster RAM on X3D chips is usually pretty minor, probably around 1-3%, so you can definitely save some cash and still be happy with a cheaper alternative!
Exactly! I bought a 64GB 6000 CL30 kit for a great price in spring and it’s been working perfectly.
Both 6000 CL30 and 6400 CL32 have similar latency of around 10ns, so you should be fine with either. If you're feeling adventurous, just buy the 6400 and see how it goes! Sometimes, 6400 RAM comes with an option to run at a slower, stable 6000 MHz. Honestly, on your 9800X3D setup, I doubt you’ll have any major issues with 6400 RAM.
While 6400 RAM isn’t strictly necessary, there's nothing wrong with using it. Just know some may require tweaking to hit peak performance. If you can snag it for cheaper, give it a go but don't be surprised if you have to dial down the speeds for reliability. You could also check the specs for a maximum speed recommendation—I’ve seen 5600 listed with 2 sticks and 3600 with 4, but it's still worth trying higher RAM with EXPO profiles.
That's understandable! If the price works out better, I might settle for 5600 without worrying too much about losing performance.
Totally! RAM prices are wild right now, stability is key though.
Thanks for sharing those numbers! It's nice to know the speed difference isn’t a massive deal.