Sapphire Rapids CPU Leak: Up to 56 Cores, 64GB of Onboard HBM2


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AMD has spent the last couple years demanding Intel across the desktop, server, and cellular marketplaces, but the hole amongst the two providers is arguably biggest in server. At existing, AMD ships up to 64 cores in a one socket, exactly where Intel has only stepped up to shipping 40 cores this 7 days with the launch of Ice Lake SP. Former Intel Cascade Lake CPUs topped out at 28 cores. A new leak implies Intel’s up coming-technology CPU system, codenamed Sapphire Rapids, will last but not least search for to cut down some of the gaps involving itself and AMD’s Epyc.

As constantly, take this leak with your each day dose of salt. This slide comes from VideoCardz and it builds on some info we’ve earlier noticed.


Sapphire Rapids, when it launches, will (supposedly) specify yet another TDP boost — up to 350W, this time. AMD’s existing “Milan” CPUs major out at 280W, just like Rome. Memory assist moves to DDR5, as predicted, and the slide promises Sapphire Lake presents 1TB of bandwidth on 64GB of HBM2E. We understood Sapphire Lake was going to give HBM2E as an choice, but 64GB of on-die memory with 1TB/s of bandwidth is large. It’d be genuinely appealing to see how process effectiveness scaling adjustments with this configuration in contrast with products without HBM2.

A major-end Sapphire Rapids, if these rumors are accurate, would present a little pool of extremely-significant bandwidth memory, backed by a considerably larger pool of decrease-bandwidth memory. An 8-channel DDR5 process employing DDR5-4800 would offer 307.2GB/s of memory bandwidth to up to 4TB of RAM (assuming Intel retains current Ice Lake SP boundaries).

Sapphire Rapids is mentioned to aspect up to 80 PCIe 5. lanes on some SKUs, with other people constrained to just 64 lanes. It’s a 4-tile design. This meshes with what we’ve realized about Intel’s plan for tiles, which are about analogous to AMD’s chiplets, but with various tactics for I/O, package deal routing, and interconnects.

As for when these chips will be in-industry, that is a small really hard to browse suitable now. Intel has manufactured sounds about transport Sapphire Rapids in 2021, but we’ve also heard that the chip wasn’t most likely to launch just before 2022. In the earlier, there made use of to be a big distinction involving TSMC and Intel when it arrived to the question of “volume generation.” That variance is shrinking.

Intel would use the expression only a couple months in advance of a chip went on sale, whilst TSMC could possibly announce volume output as prolonged as a yr before chips became accessible to buyers. Intel claimed to be in volume output for Ice Lake SP in January 2021 and introduced in April, but reviews from Dell counsel servers with the CPU will not be out there until May possibly, and that this is “in sync with Intel’s timelines.” A January quantity announcement with May perhaps availability is a four-thirty day period delay. Which is for a longer time than is standard for Intel.

As of this crafting, we’re guessing Sapphire Rapids will sample in 2021 but not launch right up until 2022. It’ll contend in-market place against a combination of Milan and Genoa areas. Genoa is envisioned to be designed on 5nm and to use AMD’s Zen four architecture. There are rumors of a even further main count improve, up to 96 cores, but that could or might not be true.

With Zen three, AMD focused on enhancing Infinity Cloth general performance and clock speeds, but it wound up paying drastically more power on “uncore” functions than Rome did. The business could choose to concentration on bettering IF and CPU effectiveness with Zen 4 and hold core counts equal, or it may decide to get advantage of 5nm’s density improvements and thrust core counts when again. 96 cores without the need of HBM2 and 12 memory channels tackling 56 cores with HBM2 and eight memory channels? Appears fascinating to us.

This slide also mentions third-era Optane, aka Crow Go, and statements bandwidth could be improved by up to two.6x in blended read/write eventualities. None of the news pertaining to Optane has been very good these days, to the level that we’re looking at to see if Crow Pass even will come to marketplace. Assuming that it does, nonetheless, it looks like the memory normal will finally get a serious overall performance kick. No phrase on whether or not Crow Go supports PCIe 4. or PCIe 5., but Intel is plainly pushing to get Xeon back again on a competitive footing. Ice Lake SP is a solid hard work for Chipzilla, but it does not solely shut the hole with AMD. Sapphire Rapids gives Intel yet another shot at executing so.

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