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PlayStation 4K - Codename Neo - Technical analysis
- Thread starter Recall
- Start date
It wouldn't be Puma if the node information is correct, since that is a 28nm core.
AMD already marketed Puma as a successor for Jaguar, which keeps it within the 16h family and didn't really change much.
Even a shrink of Puma would get a different name and could make it a successor within 16h.
They seem very sure of their info: Decision taken by Sony during Spring 2014 to do a Puma + Polaris. Can we trust vrworld?
He means the source of the information. All I can tell from the article is that
and
.
That's my question, it's a generic "we learned that" and there's no source.
One reason for Sony to go with a custom derivative is right there: "to keep the hardware changes invisible to the game developers".
I have no idea what that implies for either of the existing choices. Binary compatibility is one thing, but guaranteeing performance profile applying in all cases is a bold one.
Written by Theo, which sort of rings a bell in the tech journalism arena from what way back when.
Yes the whole article could be wrong, but then that would mean we should ignore the part about the GPU being Polaris as well as the CPU not being Zen.
So this either confirms Polaris and no Zen, or it confirms nothing and should be ignored.
I'd say there is nothing confirmed anywhere, but the most credible specs rumor we have is the one corroborated by multiple sources by Eurogamer (first post here). That source is saying Jaguar.
If there are real technical reasons to put the Jaguar cores into question (only on 28nm), wouldn't the entire Neo specs from eurogamer be put into question, as this is the only reasonable source of specs we have?
(I don't want to be a bastard, but that would also put this thread back to rumors and speculation)
If there are real technical reasons to put the Jaguar cores into question (only on 28nm), wouldn't the entire Neo specs from eurogamer be put into question, as this is the only reasonable source of specs we have?
(I don't want to be a bastard, but that would also put this thread back to rumors and speculation)
One straightforward interpretation is that a re-implementation on a different process that otherwise looks the same from a software standpoint is being labeled imprecisely. AMD has made a habit of imprecision when labeling its bug-fixed APUs, such as Trinity/Richland and Kaveri/Godavari, so the signal/noise ratio is by default very low.
I read in this thread that Puma is just a shrunk Jaguar. Could it be that the CPU is referred to as both by different sources?
Puma is 28nm. That particular core, or Puma+ does exist on more than one 28nm process, but its primary distinction is that it has features like functional turbo that Jaguar for whatever reason failed to implement successfully. The characterization of this "successor" is that it wasn't really all that different.
Michellstar
Regular
Apparently they changed this line, now reads:
"The new 14nm FinFET APU consists out of eight x86 ‘Zen Lite’ LP cores at 2.1 GHz (they’re not Jaguar cores, as previously rumored) and a Polaris GPU, operating on 15-20% faster clock than the original PS4."
Zen lite, sure
"The new 14nm FinFET APU consists out of eight x86 ‘Zen Lite’ LP cores at 2.1 GHz (they’re not Jaguar cores, as previously rumored) and a Polaris GPU, operating on 15-20% faster clock than the original PS4."
Zen lite, sure
Yeah that's starting to lose credibility now.
Love_In_Rio
Veteran
L2 cache: 512KB per core --> 256KB per coreApparently they changed this line, now reads:
"The new 14nm FinFET APU consists out of eight x86 ‘Zen Lite’ LP cores at 2.1 GHz (they’re not Jaguar cores, as previously rumored) and a Polaris GPU, operating on 15-20% faster clock than the original PS4."
Zen lite, sure
L3 cache: 8 MB shared --> 4MB shared
And Voilá!, you have your zen-lite NEO edition!.
In fact, now the news has more sense than before. Zen is the most logical choice.
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Theo apparently has a history of phantom edits judging by some ancient B3D discussion.Apparently they changed this line, now reads:
"The new 14nm FinFET APU consists out of eight x86 ‘Zen Lite’ LP cores at 2.1 GHz (they’re not Jaguar cores, as previously rumored) and a Polaris GPU, operating on 15-20% faster clock than the original PS4."
Zen lite, sure
Michellstar
Regular
When i read it, after checking this thread, was odd that nobody mentioned the zen part lol
D
Deleted member 13524
Guest
Theo Valich is one of the bright scientific minds behind reverse-hyperthreading:
So Reverse-Hyperthreading, a technology that combines two cores to work as one, is so spectacular that even a single core A64 3800+ can use it to combine its.. erm.. single core.. with a.. hum.. with an interdimensional quantum... duplicate and overcome an Intel dual-core with higher IPC.
Brilliant.
Theo Valich said:
So Reverse-Hyperthreading, a technology that combines two cores to work as one, is so spectacular that even a single core A64 3800+ can use it to combine its.. erm.. single core.. with a.. hum.. with an interdimensional quantum... duplicate and overcome an Intel dual-core with higher IPC.
Brilliant.
Oh. OH! I was reading that and thinking "Wow that's impress-NOOOOO!!!"
