have the issues of running 4 sticks of RAM been fixed yet?

[Marzipan]

I'm having no luck finding any info about whether I would be able to run 4x 16GB DDR5-7200 UDIMM at full speed with my 13900K on an MSI Z790 Edge WiFi. When the first gen DDR5 parts were released and you installed 4 sticks, it would downclock it to something ridiculously slow. Has that been remedied or at least made better?

I can't afford the high capacity 32GB / 48GB sticks of 7200mhz RAM for teh 64GB / 96GB I'd like to have. Buuut, I could afford to get two 32GB kits of 7200mhz memory if I staggered it over a couple of months. that a single 32GB / 48GB stick is often twice the price of the same capacity as a matched pair really ticks me off. I want fast...but not that much.

 

[Caldezar]

Pretty confident you'll get reduced speeds no matter what, but by how much depends on the MB and RAM.

 

[crazyea]

I wouldn’t even bother. You have very good ram already and I have tested the high end ram. You will not really see a performance benefit on that setup. Even on my 14900k I settled on 6600. That dominator platinum is premium memory.

I tested up to 7400mhz. The 6200 kit I sold you was the sweet spot.

 

[moocow]

Intel also have this problem? My Ryzen 5800X and Bulldozer 9370 would both need higher voltage to get it to boot at the stated speed, otherwise it's de-rated. So my DDR4 3600Mhz need 1.4v instead of the stated 1.35v otherwise the highest I can go is 3200Mhz.

 

[crazyea]

It’s just that passed a certain point there are diminishing returns. With that comes increased cost, heat, voltage, etc.