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Third time's still the charm: AMD touts Zen-3-based Ryzen 5000 line, says it will 'deliver absolute leadership in x86'

(2020/10/08)


On Thursday, AMD CEO Lisa Su presided over a webcast to introduce the chip designer's latest line of Ryzen processors based on its Zen 3 microarchitecture.

"Zen 3 increases our lead and overall performance," said Su. "It increases our lead in power efficiency. And also now it delivers the best single threaded performance and gaming performance as well."

The gaming-focused processor line [1]consists of the AMD Ryzen 9 5900X, Ryzen 7 5800X, and Ryzen 5 5600X. And there's a high-end version of the 9 series, the Ryzen 9 5950X.

AMD CTO Mark Papermaster was equally effusive about its Zen 3 cores. "It is a beast in performance and will deliver absolute leadership in the x86 market," he said.

AMD pushes 64-core 4.2GHz Ryzen Threadripper Pro workstation processors [2]READ MORE

According to Su, the Ryzen 5900X has 19 per cent higher IPC (instructions per cycle) than its predecessor, the 3900X; higher clock speed; and other innovations.

Papermaster cited a new processor design layout that brings all the cores together into a unified eight-core complex, which accelerates core-to-core communication. "That consolidation actually allows every core to directly access the 32 megabytes of L3 cache, and that dramatically accelerates workloads that are latency sensitive, like gaming," he said.

He also pointed to wider floating-point and integer execution units as a source of increased execution capability at a lower latency, and improved zero-bubble branch prediction that reduces delays when cramming software instructions through the processor's pipelines, which means applications run faster.

Where Zen 2 used two four-core cache complexes to access 16MB of L3 cache, Zen 3 uses a single unified eight-core cache complex that provides direct access to 32MB of L3 cache.

"That direct access to a cache pool of this size is very significant for gaming," said Papermaster.

Here are the specs:

Name

Price

Cores / Threads

Clock Freq.

Turbo Freq.

L2+L3 Cache

TDP

Ryzen 9 5950X

$799

16 / 32

3.4 GHz

4.9 GHz

70 MB

105W

Ryzen 9 5900X

$549

12 / 24

3.7 GHz

4.8 GHz

70 MB

105W

Ryzen 7 5800X

$449

8 / 16

3.8 Ghz

4.7 GHz

36 MB

105W

Ryzen 5 5600X

$299

6 / 12

3.7 Ghz

4.6 GHz

35 MB

65W

In gaming, AMD claims the 5900X provides 28 per cent better performance in Shadows of the Tomb Raider compared to its own 3900X.

For general content creation, AMD compared its 5900X to Intel's 10-core Core i9 10900K, with the 5900X coming out ahead in video editing (13 per cent), rendering (59 per cent), CAD (6 per cent), and compiling (14 per cent).

The Zen 3-based Ryzens will be available on November 5, 2020. AMD is planning another event on October 28, 2020, to talk about its Radeon RX 6000 gaming GPUs. ®

PS: Intel tried to spoil AMD's announcement today by yesterday [3]mentioning that its "11th Gen Intel Core desktop processors (codenamed 'Rocket Lake') are coming in the first quarter of 2021."

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[1] https://www.amd.com/en/press-releases/2020-10-08-amd-launches-amd-ryzen-5000-series-desktop-processors-the-fastest-gaming

[2] https://www.theregister.com/2020/07/15/amd_ryzen_threadripper_pro_64_core_workstations/

[3] https://medium.com/intel-tech/intels-commitment-to-gaming-and-a-sneak-peek-at-intel-technology-to-come-83677833be7f

[4] https://whitepapers.theregister.com/

swm

Go AMD. No longer second best.

cb7

Some observations:

1. Usually, the chips with fewer cores clock faster. Here the opposite appears to be true. I suppose it's a way to encourage people to buy the higher end chip. Unless the lower end models can be overclocked easily. Time will tell.

2. No Ryzen 3 chips were announced. I'm hoping they'll come sooner rather than later. Not everyone can afford a $299 CPU. The trouble is, most gamers don't need more than 4-6 cores, so releasing Zen 3 Ryzen 3's early will no doubt hurt higher margin Ryzen 5 sales.

3. It would appear AMD has finally won the single core crown from Intel (at least according to the announced single core Cinebench score). Well done AMD.

The Cinebench score seems remarkable given that Zen 3 tops out at 4.9GHz vs Intel's 5.3GHz.

However, Intel's hitting those frequencies at 14nm whilst AMD's now on 7nm. I wonder what's stopping AMD clocking faster? And when (if?) Intel hits 7nm, there's a good chance they'll be on top again.

Nevertheless, it's a great time to be building some kick ass machines :-)

Spacedinvader

1. They do, TDP difference between bottom 2. Turbo is single core.

2. moar cores!

3. Intel suffers a little in AVX iirc but still, AMD is the nuts!

I wonder if...

chuckufarley

...The manufacturing yields will take a hit do to the new chiplet design? Most applications will not even notice but a few will. I have to use containers to isolate some work loads on Zen2 CPU's because they loose about 10% of overall performance if the process has to reach across the Infinity Fabric too often to get it's data. By ensuring that the tasks stay pinned to specific sets of cores I can crunch more numbers but with a higher management overhead.

Not that I am going to recommend too many people currently on Zen2 run out and invest heavily in Zen3 just because of this. On the other hand, if you have been putting off upgrading for a while then this might just be your new kit.

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