Question DDR5 5600 Vs 6600

[braxus]

Im debating to upgrade my system for the new Ryzen 9 7900X CPUs. The 7000 series used DDR5 memory, so I was looking at some new sticks on NewEgg Canada. I do a lot of high rez Photoshop editting, as well as processing 4K and 8K video. Im hoping to get 64GBs of memory again, but it all depends on what I can afford. For one 16GB stick (I'd get more obviously), they list 6600 speed latency 34. For one 32GB stick per, they list up to 5600 speed latency 28. Am I going to notice a real difference between 5600 and 6600, when especially encoding videos? It all depends on whether the stick will work at its marked speed too, as I recently got some DDR4 4000 that was only safe using at 3600 speed. 4000 had errors.

Im just trying to gauge whether getting the higher speed ram is worth the extra cost for my uses? It also noted the latency is not as good with the higher speed ram as well, so the real gains are less.

 

[Albert.Thomas]

If I were you, I'd hold on purchasing any DDR5 for now. We don't know how sensitive Ryzen 7000 is, or isn't, to RAM speeds yet.

That said, you're not likely to notice a big difference between the two.

 

[GameCrucnh]

Not 100% sure about this, or if it'll apply to the 7000 series, but AMD CPUs get a speed "bonus" when the infinity fabric speed is half of your ram speed,

For example; 3600mhz ram could end up running better than 3800mhz ram (assuming you don't overclock the infinity fabric) because 3600mhz matches up 1:1. Might not even apply or be a thing for the 7000 series though