Tuesday, December 13, 2016

AMD processor-rebirth: RyZen competes with the Intel Core i7-6900K – Heise Newsticker

RyZen AMD’s first Zen-processor is called, it runs with a minimum of 3.4 GHz and with Intel’s Core i7-6900K. In the first quarter of 2017 RyZen for Desktop systems, to appear.

the new AMD High-End processor, “Summit Ridge” with Zen architecture to appear in the first quarter under the name of “RyZen” for Desktop systems. RyZen to AMD’s processors, after many years of Intel domination is finally competitive again – first for gamers (Q1 2017, RyZen), then in servers (Q2, “Naples”), and finally in Notebooks (2. Half Of 2017, Raven Ridge). In the Californian wine area of Sonoma County AMD has released some Details on RyZen, the ancestors that AMD processors may actually be an Alternative to Intel.

3.4 GHz base clock, 8 cores, 20 MB Cache, and an improved Turbo mode: RyZen appears, according to AMD in the first quarter of 2017. Enlargeößern
image: c’t/AMD
Four years of work for the new processor-Generation

According to AMD, and have worked for more than a thousand developers over four years on RyZen processor. The former Zen chief engineer Jim Keller left AMD over a year ago and now works at Tesla. A processor with eight real cores and 16 Threads running at a base clock of 3.4 GHz has come. On top of that, a Turbo mode (Precision Boost), which increases the clock frequency depending on load and power consumption. The Turbo fits in fine in 25-MHz steps of the current Situation – in the case of the current Intel processors, the Turbo jumps in 100-MHz steps.

The IPC AMD will have a 40 percent increased the efficiency even more.
The IPC will have increased AMD by 40 percent, the efficiency even more. Enlargeößern
image: c’t/AMD
remains Open, whether the individual cores, regardless to different Turbo clock frequencies – such as, for example, in turbo-core mode of the previous processor, Bulldozer. Also if there are different clocks for AVX and Non – AVX Code, like Intel’s Xeons, is so far uncertain. The final clock frequencies are not announced by AMD yet.

The first RyZen CPU has a total of 20 Mbytes of Cache, 4 MB of L2 (512 KB per core) and 16 MB of L3. For comparison: The Core i7-6900K (Broadwell-E) has 256 Kbytes of L2 Cache per core (a total of 2 MB) and 20 MB of L3 Cache. RyZen processors running on the AM4 boards and contain no integrated graphics unit.

RyZen TRANS-a 4K-Video in Handbrake encoded in 53 seconds, a Core i7-6900K took 57 seconds.
RyZen TRANS-a 4K-Video in Handbrake encoded in 53 seconds, a Core i7-6900K took 57 seconds. Enlargeößern
image: c’t
RyZen processors running on the AM4 boards. Enlargeößern
image: c’t/AMD
SenseMI: Goodies for Advanced users

AMD advertises RyZen with the technology, “SenseMI”, which consists of the points of Pure Power, Precision Boost, Extended Frequency Range, Neural Net Prediction and Smart Prefetch. Pure Power, monitors the temperature, clock frequency and voltage in real-time, Precision Boost will then adjust the Turbo clock frequency. The Turbo clock frequency is allowed to exceed your limit (Extended Frequency Range/XFR, similar to the case of Nvidia GPUs), provided that the temperature and power consumption are under the Maximum. AMD mentioned that the achievable Turbo-beat increases in frequency with better cooling (air, water, liquid nitrogen). For Overclockers, AMD will however provide a manual OC Tool.

the processor is Running with a particularly low temperatures, then he can exceed his custom Turbo clock frequency. Enlargeößern
image: c’t/AMD
Neural Net Prediction AMD called to say an improved and extended jump prediction (Branch Prediction). Seem to be evaluated dependencies not only branches, but also Command, in order for the subsequent program sequence to predict the “best path through the CPU” before. Smart Prefetch is related to the suspected pre loading data in the cache (Prefetching) – according to AMD this i s particularly sophisticated (“sophisticated”) – how many prefetchers work in which Places, and how this differs from Intel’s current techniques, is completely unclear.

RyZen should appear in the first quarter of 2017. A price AMD has not announced yet. It is to be admired to be assumed that the CES already RyZen systems. In the course of the year 2017 and the Desktop should appear in versions with four or six physical cores.



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