![]() 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).Jan 5th 2023 AMD Ryzen 7000X3D Announced, Claims Total Dominance over Intel "Raptor Lake," Upcoming i9-13900KS Deterred (177).Apr 24th 2023 AMD Ryzen 7000X3D Processors Prone to Physical Damage with Voltage-assisted Overclocking, Motherboard Vendors Rush BIOS Updates with Voltage Limiters (258).Jun 14th 2023 AMD Zen 4c Not an E-core, 35% Smaller than Zen 4, but with Identical IPC (135).Dec 3rd 2022 AMD Readies 16-core, 12-core, and 8-core Ryzen 7000X3D "Zen 4" Processors (153).Jan 5th 2023 AMD Confirms Ryzen 9 7950X3D and 7900X3D Feature 3DV Cache on Only One of the Two Chiplets (164).It would be interesting to see how they affect the "golden ratio" for Zen 4. Among the AMD EXPO-certified DIMMs announced over the past few days, some do engage memory clocks beyond DDR5-6000. As with both AMD and Intel now, the highest frequencies are possible only with one single-rank DIMM per memory channel (1DPC), and memory overclocking yield lower results with dual-rank DIMMs, or two DIMMs per memory channel. ![]() AMD's Robert Hallock, leading the Discord AMA, recommended that FClk be left untouched at "Auto" for the best results, and overclockers look for an Auto:1:1 ratio for the FClk, UClk, and MClk. For the Ryzen 3000 "Zen 2," it climbed to DDR4-3800, the Ryzen 5000 "Zen 3" it was DDR4-4000.Īt the architectural-level, it is usually the highest frequency where FClk, UClk, and MClk maintain a 1:1:1 ratio, before having to engage dividers that impact performance, making it a point of diminishing returns for investing in faster memory modules. For the very first Ryzen, this was DDR4-3200. A sweetspot frequency in AMD jargon is an inflection of performance, stability, cost, and ease. Furthermore, it’ll doubtless be costly in its initial incarnations, so top-end DDR4 modules will remain a strong choice in terms of price/performance ratio (and should be relevant for a good time to come yet).AMD in its Discord AMA confirmed DDR5-6000 to be the "sweetspot" memory overclock for its upcoming Ryzen 7000 "Zen 4" processors. But as mentioned, in the early days on the PC platform it will be as much of a marketing coup as anything. But over time, much higher speeds have been reached by DDR4, and the same will be true of DDR5.Īt the beginning of the year at CES 2020, Micron announced that it had already started sampling new DDR5 SDRAM in data centers, and Samsung has indicated that it will begin mass production of DDR5 modules in 2021, with SK Hynix stating that it expects to do this even sooner – later this year, in fact.Ī lot of the initial usage will be in smartphones, and we can doubtless expect to see DDR5 in more handsets soon enough (it’s already used in Samsung’s Galaxy S20).ĭDR5 offers double the memory bandwidth compared to DDR4 and greater power-efficiency to boot, among other benefits. As we saw when DDR4 first launched, the initial offerings didn’t do much for performance compared to high-end DDR3 modules, and in fact were much the same. Bedding inīear in mind that even when DDR5 memory is supported and available to buy, it’ll need time to bed in. The report also contends that AMD will introduce native USB4 support in 2022 alongside DDR5, although motherboards will maintain PCIe 4.0 (in other words, PCIe 5.0 won’t be arriving until further down the line). ![]()
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