Re:I am giving up on Intel and have bought an AMD Ryzen 9950X3D
by adithyassekhar on Sunday September 07, 2025 @08:57AM
(#45157782)
JEDEC rated DDR4 at only 2400mhz right? And anything higher is technically over clocking?
Re:I am giving up on Intel and have bought an AMD Ryzen 9950X3D
by dijit on Sunday September 07, 2025 @10:16AM
(#45158324)
JEDEC has a few frequencies they support: https://www.jedec.org/standards-documents/docs/jesd79-4a
DDR4-1600 (PC4-12800)
DDR4-1866 (PC4-14900)
DDR4-2133 (PC4-17000)
DDR4-2400 (PC4-19200)
DDR4-2666 (PC4-21300)
DDR4-2933 (PC4-23466)
DDR4-3200 (PC4-25600) (the highest supported in the DDR4 generation)
What's *NOT* supported are some enthusiast ones that typically require more than 1.2v for example: 3600 MT/s, 4000 MT/s & 4266 MT/s
And no, as ECC UDIMM for the speed (3600MHz) I run mine at simply does not exist - it is outside of what JEDEC ratified for the DDR4 spec.