AMD RyZen R7 / R5 / R3

**Winjer** · 08-11-16, 14:00

AMD to release ZEN based K-model processors for overclocking

Anyone remember the Black Editions from AMD ? Well it looks like AMD is doing an Intel, at least that is what the latest rumors imply for ZEN. K model processors for Intel obviously imply an unlocked multiplier and enough voltage headroom.If we can believe the Italian website BitsAndChips (they mention 'according to their sources') there will at the very least be one octa-core Summit Ridge-processor especially for overclockers. Which would make total sense as AMD always has released unlocked products. The CPU would retain its 95 Watt TDP.
The K model would get slightly higher clock frequencies (whatever they may be), an unlocked multiplier but also would be sold without cooler as tweakers pretty much never ever use stock coolers anyway. Whether or not the rest of the Summit Ridge-processors would be locked on the multiplier is another question that can be raised, as that does nto fit the model that AMD has followed in the past.
The initial “Zen” CPU core is stated to deliver more than 40 percent improvement in instructions per clock cycle over the previous generation cores and will come to market first in an 8-core, 16-thread system-on-chip for desktops (=Summit Ridge). The "Summit Ridge" Zen family will feature a unified AM4 socket with its GPU-equipped "Bristol Ridge" APU counterparts, and feature DDR4 support and a an expected 95W TDP. Though unconfirmed we expect each Zen core will have four integer units, two address generation units and four floating point units, and the decoder can decode four instructions per clock cycle. L1 data cache size is 32 KiB and L2 cache size 512 KiB per core. 2 CCUs = 2x8MB (L3) + 8x512KB (L2) = 20MB.

The 8-core Summit Ridge processor series from AMD will be the first ZEN based product series released to the desktop consumer market. As it looks right now, Summit Ridge is to be released in January or February 2017.

**LPC** · 08-11-16, 14:40

Boas!
Espero que não imitem a Intel nesta história...

Mantenham-se com os "black edition", que é mais apelativo do que apenas dizer "K".

No entanto vamos a ver o que sai dali...

Cumprimentos,

LPC

**Winjer** · 08-11-16, 14:51

Pois, aqui temos um problema. É que actualmente todos os CPUs da AMD têm um multiplicador desbloqueado.
Mas pelo que vemos desta noticia, pode indicar que apenas alguns vão ter esta feature.
isto vai ser mau para os consumidores, especialmente quem tem orçamentos apertados e precisa de fazer OC para recuperar algum desempenho.

**Winjer** · 10-11-16, 10:30

Estes dois post são de um user no forum carbonite, que supostamente trabalha para um OEM e teve acesso a uma boa dose de informação.
Não há garantias de que seja verdade.

De qualquer das formas, aqui ficam. Pelo que se lê, o Zen tem coisas boas, mas a AMD também tem ainda muita coisa para melhorar.

http://carbonite.co.za/f20/amd-zen-141214/

Apologies if there's another thread about AMD's upcoming CPU architecture and of course desktop CPUs, if there is, delete or perhaps merge this info.
This is the current state of the retail CPUs, which have been improving by the month.

- There are some errata issues present in the current testing samples, similar in a way to the TLB bug of the Phenom. The workaround right now is done via the BIOS. The workaround however, strips around 30 ~ 40% of the CPU performance.

- The CPUs are well behind schedule and every day there's real progress and bug fixing being done. Unlike with INTEL's E0 CPUs which make it to the wild that are almost completely final silicon. AMD's samples will continue to get bug fixes right up until retail spec sampling to partners.

- In August Clock speeds were 3.8GHz, right now 4.2GHz overclocking is possible, with LN2 5GHz is doable. Again this will change of course, but it is just the current silicon that is behaving like this.

- AM4/ZEN uses an SOC design, that means even CMOS/BIOS configuration is on package (not necessarily on silicon, I can't confirm this) so it is possible to clear the "BIOS" and still have old value applied 30 minutes later. How this will be addressed remains to be seen. Perhaps it won't be the same scenario for final silicon

- Operating voltages (nominal) are 1.3v and all the way up to 1.5v should be fine it seems for AIO cooling. Frequency scaling isn't a strong point but again that may have everything to do with the process at this point rather than an inherent design limitation.

- Performance is particularly strong at this point vs. INTEL's latest offerings. Single thread performance is matching Haswell-E and of course multi-threading performance as well. Tests that are memory bandwidth dependent may go to the INTEL platform simply as a result of having more memory channels, but I can't confirm that right now and have no info on that. The important thing here is that the 16Thread/8-Core CPU is minimum 5960X performance if not better actually. (Based on Cinebench R15) with the error fix disabled.

- Can't speak to how well the IMC is working as current samples are locked to low DRAM frequencies (2133MHz and lower) and of course this has an impact on performance.

- As stated in the beginning, every week is progress and AMD is working at an unprecedented rate to get these ready by March.

- You're unlikely to see any high end boards for the CPUs prior to launch or at launch, simply because no vendors can commit to too much right now as plenty is changing at a rapid rate.

* All overclocking is done via Overdrive, you can't change any performance features at all in the BIOS (on to that next) at all.

* BIOS or UEFI is actually built into the CPU, so only AMD can update the "BIOS" or microcode. All overclocking must take place within the Operating system

* Right now it takes up to 30 minutes to clear the BIOS. If you remove the CPU and place it on another motherboard, it'll have the same settings applied as on the previous board. So debugging is a nightmare

* 6850K SKU (May not be final designation) is wait for it.... $300 roughly. That's 8 Cores and 16 Threads

* AMD's Hyper Threading is called SMU and it is ************ good. The same efficiency as Intel's HT.

* Performance is really good, be it SuperPi, Cinebench, 3DMark etc, it's FPU performance is incredibly good and easily matching that of what Intel offers.

* Current performance is staggering even though it is limited to 2133MHz (as mentioned before) and NorthBridge Frequency is limited to 2400MHz

* There will be a nigher SKU than the 6850K, but it is a higher bin so it will certainly overclock better than 6850K and that may carry a premium price, but unlikely to be double.

* There's plenty of excitement from all board vendors about the platform, so we will see how it all pans out. (Especially with the hot mess that INTEL has in store for us H2 2017, that we can leave to another thread)

* For Gaming, the CPU is neck and neck with INTEL, even at low res where CPU bound.

**LPC** · 10-11-16, 10:56

Boas!
Tive a ler...

Tirando alguns problemas que requerem lima, parece-me bem...

O facto de termos a bios integrada no silicone é novidade para mim e deve ser retirada na versão final do cpu.
Pensei que já estivessem mais avançados nesta fase...

Em especial nestas situações de bugs e outros problemas...
Mas pronto ainda existe tempo até ao lançamento... Mas garantidamente se querem ter o cpu em quantidade no dia do lançamento, têm que finalizar o design até ao final deste ano.

Polir o que existir para resolver e dar o design por concluído para ir para produção em massa (e para dar tb tempo aos parceiros para fazerem as boards).

Cumprimentos,

LPC

**Winjer** · 10-11-16, 11:02

Aquele problema estilo TBL bug é que me deixa preocupado.
Falta menos de meio ano para o lançamento e um bug destes costuma demorar a corrigir.

Aquilo de ter a bios dentro do CPU, só poder fazer OC pelo OS e ter de esperar meia hora para fazer um reset à bios, também me deixa um pouco preocupado.
Imagina estar a fazer OC, os settings darem erro e teres de esperar meia hora para poderes voltar a usar o PC.

**LPC** · 10-11-16, 11:06

Post Original de Winjer

Aquele problema estilo TBL bug é que me deixa preocupado.
Falta menos de meio ano para o lançamento e um bug destes costuma demorar a corrigir.

Aquilo de ter a bios dentro do CPU, só poder fazer OC pelo OS e ter de esperar meia hora para fazer um reset à bios, também me deixa um pouco preocupado.
Imagina estar a fazer OC, os settings darem erro e teres de esperar meia hora para poderes voltar a usar o PC.

Boas!
O bom é que foi detectado precocemente (e não como aconteceu na Intel), o que permite a resolução no silício ou através de uma bios inicial.

Aquilo da bios no SOC é estúpido mas poderá ser pensado para testar a integridade em diversas plataformas am4 sem ter que andar a configurar as coisas novamente...
Digo eu...

Sendo um desenho totalmente novo e de raiz (quebrando com o que vinha para trás), acredito que dá bastante trabalho a limar...
A Intel tem vindo a melhorar a arquitectura á 7 gerações e ainda existe espaço para melhoras...

A AMD não tem de longe os recursos da INTEL pelo que o trabalho é mais penoso... Mas estou a torcer pelo Underdog!

Cumprimentos,

LPC

**Winjer** · 10-11-16, 11:10

também estou a torcer pela AMD e se lançarem um CPU minimamente competitivo com a Intel e sem bugs destes, será compra certa.
Já ando com o bichinho para mudar de plataforma há algum tempo, mas como a Intel apenas lança incremento de 10% em cada CPU, acabei sempre por adiar.