The Playstation 4 is already released on the North American market and many are revealing the console to run on an AMD Jaguar CPU, clocked at 1.8GHz. Before the machine’s release, it was thought that the PS4 will run on a 1.6GHz CPU only. On top of that, it is the AMD Jaguar so we can see the PS4 capable of going to 2GHz since the CPU is built for that speed.
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It's very unlikely that Sony would push even more power through their hardware than 1.6 GHz would do. The heat design just barely fits within the envelope they've created with the svelt little PS4 box.
Heck, look at FP games like Killzone. The AI is pretty bad in that game, yet the graphics are downright spectacular. Kinda screams "lack of CPU muscle", since AI is not something you can run effectively on the GPU.
It's 1.6 GHz, until proven otherwise. Sony would scream it to the masses, if it were faster than the 1.75 GHz of the XB1, and would have screamed it back when the XB1 was still 1.6 Ghz as well... that's PR 101. Rumors to the contrary are just wishful thinking.
Don't worry, when more devs get a handle on actually using the 6-7 cores they have available, the PS4 will be just fine in the CPU dept. Clock, as they say, isn't everything. Given the extra latency of GDDR5, and subsequent extra cache miss delays, bumping the clock actually has even less effect than it normally would, so its not worth stressing over.
If Sony had the heat headroom to bump the clock, they would have likely bumped it on the GPU first, in any case -- and we know they didn't.
Note these two quotes from the article:
Article: "When taken a closer look, two disabled compute units are present inside the PS4’s GPU which acts as an emergency, just in case the other fails. The compute unites cannot be enabled."
This is kinda wrong. These two extra cores are disabled at the factory, after reliability tests. They exist for factory yield reasons, and will never turn on in case of "emergency". If one of your 18 active CUs fails while you're using the system, you're screwed, even if one of the disabled CUs could have otherwise done the job (outside of being disabled at the factory). This guy doesn't really know his stuff, or is calling a factory yield issue an "emergency" which seems odd.
Article: "If these speculations are much more concrete, then the PS4 is likely the winner in terms of clock speed. However, these are still rumours so take it with a pinch of salt."
This clearly qualifies the story as a rumor. The author himself qualifies it as such.
Also, the story goes on to use the fact that AMD has published 2.0 GHz as Jaguar core limits as being valid backing for the rumor, in a chip package which contains *twice* the normal number of Jaguar cores. AMD's docs are actually referring to the Jaguar 4-core notebook chip package, with a far smaller GPU section in the APU, when claiming a 2.0 GHz limit. I sincerely doubt it's safe to run either the PS4 or XB1 at that speed, without some really amazing airflow, or liquid cooling -- which neither console has.
Out matched, out gunned, and out classed. Meaning faster, stronger, and biggest launch ever says its in a class of its own.
ThiS article is badly written and poorly researched.
There are much better written and far more informative articles on PS4 tech out there. My suggestion is if you are genuinely interested, jump on Google and do some reading.