Anandtech tests AMD Ryzen CPU licensed to China - find surprises in the architecture

[defaultluser]

https://www.anandtech.com/show/15493/hygon-dhyana-reviewed-chinese-x86-cpus-amd

There's a reason why it's taken forever for this licensed Zen 1 t o appear - they did more than just copy-and-paste.

It's surprising how much they castrated certain instructions! And is AVX just not there?

 

[mnewxcv]

So don't buy ryzen cpus from Alliexpress...

 

[Grimlakin]

Interesting, I wonder why.

 

[Lakados]

https://www.anandtech.com/show/15493/hygon-dhyana-reviewed-chinese-x86-cpus-amd

There's a reason why it's taken forever for this licensed Zen 1 t o appear - they did more than just copy-and-paste.

It's surprising how much they castrated certain instructions! And is AVX just not there?

Was just reading that, they think the lack of AVX is a bios glitch. But kind of hard to confirm anything on this chip.

 

[cjcox]

There's a memory...... Several Chinese men in a bath... one saying "Hygon, take me away!"

 

[defaultluser]

Interesting, I wonder why.

It's pretty common to cut the performance of electronics for foreign sales. But that's pretty huge encryption hit!

 

[Grimlakin]

Interesting and it makes sense to send china a detuned feature less CPU so when they make the invariable knockoffs they don't step on AMD.

 

[kirbyrj]

It's pretty common to cut the performance of electronics for foreign sales. But that's pretty huge encryption hit!

I have a feeling the encryption hit was at the direction of the govt.

 

[Auer]

 

[Zarathustra[H]]

I'd imagine these are just for the Chinese market.

Not sure why anyone in the west would want them with China's miserable track record.

It's not as if a real AMD Ryzen CPU is particularly expensive anyway, at least not unless you get Threadrippers or Epyc's, which ai am guessing this is not.

 

[Auer]

I'd imagine these are just for the Chinese market.

Not sure why anyone in the west would want them with China's miserable track record.

It's not as if a real AMD Ryzen CPU is particularly expensive anyway, at least not unless you get Threadrippers or Epyc's, which ai am guessing this is not.

Well they have to start somewhere, and it would seem AMD is a good (and willing) starting point.