Monday, April 27th 2020
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AMD to Support DDR5, LPDDR5, and PCI-Express gen 5.0 by 2022, Intel First to Market with DDR5
AMD is expected to support the next-generation DDR5 memory standard by 2022, according to a MyDrivers report citing industry sources. We are close to a change in memory standards, with the 5-year old DDR4 memory standard beginning a gradual phase out over the next 3 years. Leading DRAM manufacturers such as SK Hynix have already hinted mass-production of the next-generation DDR5 memory to commence within 2020. Much like with DDR4, Intel could be the first to market with processors that support it, likely with its "Sapphire Rapids" Xeon processors. AMD, on the other hand, could debut support for the standard only with its "Zen 4" microarchitecture slated for 2021 technology announcements, with 2022 availability.
AMD "Zen 4" will see a transition to a new silicon fabrication process, likely TSMC 5 nm-class. It will be an inflection point for the company from an I/O standpoint, as it sees the introduction of DDR5 memory support across enterprise and desktop platforms, LPDDR5 on the mobile platform, and PCI-Express gen 5.0 across the board. Besides a generational bandwidth doubling, PCIe gen 5.0 is expected to introduce several industry-standard features that help with hyper-scalability in the enterprise segment, benefiting compute clusters with multiple scalar processors, such as AMD's CDNA2. Intel introduced many of these features with its proprietary CXL interconnect. AMD's upcoming "Zen 3" microarchitecture, scheduled for within 2020 with market presence in 2021, is expected to stick with DDR4, LPDDR4x, and PCI-Express gen 4.0 standards. DDR5 will enable data-rates ranging between 3200 to 8400 MHz, densities such as single-rank 32 GB UDIMMs, and a few new physical-layer features such as same-bank refresh.
Source:
MyDrivers
AMD "Zen 4" will see a transition to a new silicon fabrication process, likely TSMC 5 nm-class. It will be an inflection point for the company from an I/O standpoint, as it sees the introduction of DDR5 memory support across enterprise and desktop platforms, LPDDR5 on the mobile platform, and PCI-Express gen 5.0 across the board. Besides a generational bandwidth doubling, PCIe gen 5.0 is expected to introduce several industry-standard features that help with hyper-scalability in the enterprise segment, benefiting compute clusters with multiple scalar processors, such as AMD's CDNA2. Intel introduced many of these features with its proprietary CXL interconnect. AMD's upcoming "Zen 3" microarchitecture, scheduled for within 2020 with market presence in 2021, is expected to stick with DDR4, LPDDR4x, and PCI-Express gen 4.0 standards. DDR5 will enable data-rates ranging between 3200 to 8400 MHz, densities such as single-rank 32 GB UDIMMs, and a few new physical-layer features such as same-bank refresh.
45 Comments on AMD to Support DDR5, LPDDR5, and PCI-Express gen 5.0 by 2022, Intel First to Market with DDR5
At least it's 3200 and not say 2400. But gonna be a hard sell for those early sticks of DDR5 3200 @ CAS 50 :p
But most people will buy them from 2133mhz speed and above.
But that's The Joke - all of the DDR generations suck at launch and only really take off once they can clear above where the prior gen couldn't handle (or at least not easily).
DDR5's age will come when 32gig sticks running at say 6400 are the "just the normal base stick" much how right now DDR4 16gig sticks running at 3600 are quickly becoming the "base normal"
DDR3 it seemed to be around 1600 with 8gig sticks
DDR2 was 4gig sticks at 800
DDR1 was 1gig sticks at 200 (400)
SDR i can't remember. 256mb at 133?
EDO was expensive until toward the end. SIMMs not DIMMs ;p
I'm probably off on many of those, it's been a few years ago!
www.tweaktown.com/reviews/840/ocz_high_grade_memory_pc4800_ddr_and_pc5400_ddr_2/index2.html
Every gen does this, with the lowest part of the standard being pretty average to make bulk production cheap so the standard can be adopted quickly, and as yields improve they ramp up the speeds in bulk made OEM products (so say, dell can release the same thing with 100Mhz faster ram and CPU every 6 months)
decadecentury was this :D- Switch from 1 channel per stick (64 bit + 8 bit ECC) to 2x(32 bit + 8 bit ECC). With this change, they also upgrade the burst lenght from 8 to 16 (to make sure a core can fill a line of cache with 1 burst). This is significant in our modern multicore/multithread environment as the number of channel per core have just lowered over time. The memory timming is only one part of the equation. The memory controller currently have to work with a lot of thread trying to get data from memory and they will probably just end up queued. Having the possibility to double the memory request a cpu can do at the same time will probably results in a speed increase in heavy multithreaded workload. That might not reflect on Single threaded latency test.
I am not sure how this will improve gaming performance as to benefits from this, you have to hope that each thread access data that is on a different channels, witch might not be always the case.
- Internal change to memory banks and bank groups (higher number of bank group per dimm with the same number of bank in it)
- Same Bank Refresh instead whole dimm refresh meaning that globally each memory DIMM will have an higher availability and this will reduce also the global latency. The memory can't be accessed for read or write while it's being refreshed.
So DDR5 do not only mean that they are going to double the memory transfert speed while cutting in half again the memory clock speed like they did with every version.(and this is why you get higher lattency every times) but it actually try to change the way the memory work to make it more efficient.
So with this, i am not sure how a DDR4 3200 kit will work against a DDR5 3200 kit. There might be scenario where the DDR5 outperform the DDR4 just by the way it's being designed. But that do not means anything until we really know what would be the commonly available spec.
The last thing that will help, but might take more time to benefits from it is DDR5 will allow larger DIMM size meaning we will be able to get much more memory per system.
So for me, it's really wait and see.
DDR5 will mainly be interesting to me in terms of APU systems, general system performance doesn't benefit much from faster RAM,but iGPUs sure do. A 5nm APU with 15-20 RDNA 2 CUs and DDR5-6000? I would definitely like that, yes. Same goes for LPDDR5 in laptops, though at least we have LPDDR4X there to make up some of the deficit compared to dedicated VRAM. You might be right there, though a full calendar year without a CPU release will look weird even if the timing isn't actually any slower than previous generations. Still, the time of expecting major performance improvements year over year is past, so I suppose this is reasonable. At least that way I won't be feeling as bad for building a Renoir HTPC once they hit the desktop later this year :p
Ddr2 started at 3200, ddr3 at 800, ddr4 at 1600.
Now if trends continue ddr5 won't be faster than 4 for at least a year.
DDR5 bring a lot of new features that will increase performance no matter what speed it run. Not just more bandwidth and lower voltage. Change between DDR3 and DDR4 were not that important versus change between DDR4 and DDR5.
Also, this is a test of DDR4 vs DDR3 both at 2133 and it's not true that DDR4 were always slower.
www.anandtech.com/show/8959/ddr4-haswell-e-scaling-review-2133-to-3200-with-gskill-corsair-adata-and-crucial/8