So for the past 1-2 years on Ryzen 3000/5000, the best doable performant build on Ryzen has been 4x8GB single rank, running fclk 1:1, between 36 MHz with the tightest timings possibleIt depends heavily on high much you can tune your memory, then your MB & CPU i.e. Posted on Aug 31st 2022, 23:13 Reply #5 Bwaze So for the past 1-2 years on Ryzen 3000/5000, the best doable performant build on Ryzen has been 4x8GB single rank, running fclk 1:1, between 36 MHz with the tightest timings possibleYou're totally correct, although I think dual rank 16gb chips are reasonably common (unlike 8gb) but yeah, getting much above 1800mhz is very rare, 1900mhz is like a golden sample, and maybe only Dr. A 4 rank 2 sticks would be better yes, but hard to find. Now, finding dual rank DDR4 isn't easy (not sure about DDR5), both 8 and 16GB sticks are coming as single rank nowadays, so having 2x8 or 2x16GB will give you dual rank and you're gonna have LESS performance than a 4 stick 4 rank system. Posted on Aug 31st 2022, 22:36 Reply #2 Bruno_Oīruno_O"2 DIMMS are always better than four"įor Ryzen, 4 ranks has always been best, the difference in performance between 2 vs 4 ranks can be almost 10% in games, plenty of benchmarks / reddit / famous German overclocker videos show that iirc on AM4 there was some performance improvement to keeping Fabric fast even if desynced it just didn't get much attention because no one ran desynced daily. And optimizations to lessen the unsync penalty since it's the norm now.Īlthough, Fabric isn't strictly bound to 1:1/2/4 ratios like Intel IMC is, so maybe that's what Robert meant by Auto FCLK - you just let Fabric run as high as it can. Robert using 2000MHz FCLK as an example suggests not much has changed and it's still the same slow-ass Fabric links in there, minus generational improvements for slightly higher clock. I guess the new feature this time around is further decoupling UMC from mem clock (Gear 2-style), maybe to facilitate higher DDR5 records?ġ733MHz default Fabric sounds like a big step up over 1066MHz but that probably just from DDR5 JEDEC speeds being higher. On Ryzen you break sync with Fabric, not the UMC (has 1:2 U:M ever been a thing?). Robert trumpeting "1:1" ratio (wow that was misleading) for UMC:mem means nothing. Wondering after the last "leak" how exactly AMD achieved a 3000MHz Fabric and 1:1 UMC monumentally superior to Intel's in the same generation.this is literally just same old unsynced Fabric. May 20th 2023 AMD's Ryzen 7 7800X3D Selling Nearly Twice as Fast as 5800X3D in Some Regions (88)Īdd your own comment 21 Comments on AMD Confirms DDR5-6000 as "Sweetspot" Memory OC Frequency for Ryzen 7000 #1 tabascosauz.May 15th 2023 AMD Ryzen 8000 "Granite Ridge" Zen 5 Processor to Max Out at 16 Cores (110).Oct 17th 2022 AMD Cuts Down Ryzen 7000 "Zen 4" Production As Demand Drops Like a Rock (242).Feb 24th 2023 AMD's Reviewers Guide for the Ryzen 9 7950X3D Leaks (133).Feb 1st 2023 AMD Ryzen 7000X3D Series Prices Revealed, Available Feb 28 (174).
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