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Epic Win: AMD's 64-core 7nm Epyc CPUs La Xeon is in the dirt



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AMD has launched its 7nm "Rome" series with Epyc server CPUs, with up to 64 cores, 128 threads, 225W TDP and a maximum clock speed of up to 3.4 GHz. While the third-generation Ryzen has lit up on the enthusiast boards and driven extremely strong channel sales over the past month, the server market is where AMD really wants to play. The server market is in many ways where it is .

And while corporate launches are basically an invitation for a company to make aggressive claims in the friendliest environment on earth, the specific claims made by AMD are opening. AMD claims that Epyc sets no less than 80 new world CPU performance records measured in a broad range of industry-standard benchmarks, with Epyc 7742 delivering 97 percent higher performance than Intel's Xeon Platinum 8280L in peak SPECint 2017. Additional performance requirements are shown below: [19659004] DE24F486-FE0D-4998-9426-188C1ED48BD3 “bredde =” 640 “høyde =” 360 “srcset =” https://www.extremetech.com/wp-content/uploads/2019/08/DE24F486 -FE0D-4998-9426-188C1ED48BD3-640×360.jpeg 640w, https://www.extremetech.com/wp-content/uploads/2019/08/DE24F486-FE0D-4998-9426-188C1ED48BD3-300×169.jpeg 300w, https : //www.extremetech.com/wp-content/uploads/2019/08/DE24F486-FE0D-4998-9426-188C1ED48BD3-768×432.jpeg 768w, https://www.extremetech.com/wp-content/uploads/ 2019/08 / DE24F486-FE0D-4998-9426-188C1ED48BD3-223×126.jpeg 223w, https://www.extremetech.com/wp-content/uploads/2019/08/DE24F486-FE0D-4998-9426-188C1ED48BD3-106×59 .jpeg 106w, https://www.extremetech.com/wp-content/uploads/2019/08/DE24F 486-FE0D-4998-9426-188C1ED48BD3-348×196.jpeg 348w “sizes =” (max-bredde: 640px) 100vw, 640px “/>

Image of Anandtech

Some of these gains will be known to those who have followed AMD's 7nm Ryzen reveal. Just as Ryzen will soon reach up to 16 cores on the desktop, Epyc will now field up to 64 cores. Adding 256-bit AVX2 registrations to Ryzen design means AMD processors now offer up to 4x floating point performance to Epyc 1. Intel doesn't have an easy time to counter this – Cascade Lake is already in the market for the year, and Cooper Lake will fall in early 2020. This is why Intel CEO Bob Swan began recognizing that his company expects a more competitive AMD several months ago. The writing has been on the proverbial wall.

Single-threaded workloads have an average improved IPC of 1.15x at the same frequency, while 32-core / 64-step workloads are even higher, at 1.23x. The AMD case's maximum gain from IPC and efficiency improvements on a 32-core CPU were up to 1.4 times, although this should be considered an unusual result. As previously reported, Epyc includes 128 PCIe paths, PCIe 4.0 support, and can upload up to 8 TB of DDR4-3200.

The company tries to make a lot of hay over its 2S distribution capabilities, claiming that a 2S AMD Epyc configuration provides 44 percent lower TCO (total cost of ownership), allows for 45 percent reduction in total servers (thanks to higher CPU count) and offers 83 percent more performance (thanks to a combination of higher core count and higher performance). AMD argues that their single-contact configuration offers I / O and general performance equivalent to a two-socket Xeon. Depending on the application and scenario, they may be right. Intel's dual sockets are peaked at 56 cores, AMD can make a 64-core system with a socket.

This approach has historical merit. In the early 2000s, AMD's Opteron was a strong server competitor for Xeon from the beginning, but it was especially strong in markets that used multi-socket systems. AMD's "glue-free" server architecture allowed it to connect cores directly to each other using HyperTransport, while Intel CPUs were connected to – and severely bottlenecked by – a shared, shared bus on the front. Single-socket servers were already quite popular in the early 2000s, but while the 2S and 4S markets were smaller, they were extremely lucrative. AMD eventually took about 20 percent of Intel's server market in 2005 – 2006 before the decline began, but the earliest and biggest successes were in high-core servers where the products had the greatest advantage over Intel in terms of relative feature sets.

The situation today is not identical, but it is analogous. Again, we see AMD paying particular attention to ensuring that the tops are difficult or impossible for Intel to match. A 2S AMD Roma distribution packs up to 128 cores. Intel's Cascade Lake AP servers are BGA only and for all accounts, exceptionally expensive. Unless you use the Cascade Lake AP, you are limited to 28 cores in an Intel outlet. AMD can sell you 64.

Anandtech has a detailed review of Epyc 7nm launch hardware, and the results live up to expectations. Even in AVX-512 applications designed for the HPC market, the dual Epyc 7742 is capable of matching dual Intel Xeon Platinum 8280 CPUs.

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Image of Anandtech.

This is literally one of the most Intel-friendly reference runs you could possibly arrange. With the AVX-512 on an optimized Intel rig, the 7742 is just as fast at a fraction of the price. 512 optimizations, AMD is 1.43 times faster. Overall, AMD offers 50-100 percent more performance than Intel in the server market, at 40 percent lower price tag. According to Anandtech, there is simply "no competition."

Intel can cut its prices, to be sure. Beyond that, it has limited maneuverability. Ice Lake servers will not arrive in another year. Prices for these cores are simply fantastic, with a top-end Epyc 7742 selling for just $ 6950, or about $ 108 per core. An Intel Xeon Platinum 8280 has a list price of over $ 10,000 for a 28-core chip, just to put it into perspective. For a 32-core part, the Epyc 7502 packs 32 cores, 64 threads, a higher IPC, and an additional 300 MHz frequency (2.5 GHz base, versus 2.2 GHz) for $ 2600 as opposed to the old The $ 4200 price for the 7601 AMD does not segment the products the way Intel does, which means you get the full benefits of purchasing an Epyc part when it comes to PCIe tracks and additional features. AMD also supports up to 4 TB of RAM per outlet. Intel picks up 2 TB per outlet, and slams a price premium on that level of RAM support.

In short? Epic Epyc victory. Analysts predict that the company's market share on servers could double by mid-2020. Dell, Lenovo and HPE have servers in the works. Epyc 1 was a test shot and a pipeline. Epyc 2, like Rome, was not built in one day – but once constructed, it dominated the geopolitical landscape of the ancient world for centuries. Intel hoped that the rival's new CPU would not live up to the reputation of its namesake.

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