Incorporating more memory capacity
Incorporating more memory capacity
Hello everyone, my setup currently includes a G.Skill Flare X5 with 32GB RAM at 6000MHz CL32. I'm planning to add another 32GB and haven't found a UK supplier with the exact model in stock. My main concern is whether I can use a different brand as long as it matches the speed and timing specifications. Also, I have a quick note for Mobo regarding this.
AMD only rates their memory controller for DDR5-3600 with four sticks, so even with identical equipment we can't guarantee the outcome. It's likely EXPO/XMP won't work on the first boot and you'll need some manual adjustments. When combining different brands, try to use matching memory modules.
Identical schedules could mean the same NAND chip, but I’d avoid the reliability problems with a 4x16GB package given how fragile the RAM is on AM5. I’d consider purchasing a 2x32GB unit or check if you’re willing to trade in your existing one.
The X670e PG Lightning board is said to accommodate up to 192GB RAM with a 4 stick setup, reaching speeds of 7200. Please confirm if this interpretation is correct.
It doesn't mean you're guaranteed to run 192GB of RAM @ 7200. It means the board supports up to 192GB (4x48GB) and up to 7200 (as an overclock). In their small print they say it is subject to the QVL (which isn't a guarantee either, see buildzoids video here ) and there's no memory on the QVL (that I can see) above 6200/6400 that has more than 2 sticks tested. This is an example from MSI of how the board's rating varies on number of sticks and the capacity: Before AMD released the AGESA that supported higher speeds, it was pretty normal to use speeds lower than 6200/6400 for Ryzen 7000. This is an old (and now outdated) video on the topic: The memory controller is on the CPU and the massive DDR5 de-rates * that Intel and AMD specify for their CPUs is pretty much saying "4 sticks? You're on your own buddy". I think it is likely (from the recent experiences of other users) that if the sticks are compatible/stable running together then you'll be able to match, or get near to the rated speed of your memory with 4x16GB, but "out of the box" one-click XMP/EXPO is very unlikely. If you'll need to loosen the timings/up the DRAM voltage, or other tweaks, I can't say. * Your CPU's spec page here :
Thanks for the feedback. It seems you'd prefer two 32GB sticks over additional 16GB kits.
I just put this kit in an Asus X670E-E with a 7800X3D CPU and it functions perfectly on EXPO II settings. https://ca.pcpartpicker.com/product/Xg2W...32gx2-tz5n Update your BIOS too.
Your bios are current. I'll review it once more before you finalize the kit.