DieAppleDie said:
Pemalite said:
Multimedialover said:
Hmmmm been trying to research about the 2 cpus. I keep coming back to many articles saying ps4 4 permclock cycle, and The One 6 per clock cycle. People are scratching their heads at how microsoft achieved this.
Some tech guys saying also that ddr3 should outperform ddr5 for all generalmpurpose tasks for cpu.
|
What the hell is a permclock cycle? I've never heard that term used.
Regardless, to put performance into perspective though, Anandtech did a run down of Kabini/Jaguar and it works out that a Quad Core Kabini chip is half the speed of a Dual Core Core i3/i5 at the same clock.
So, an 8 Core 1.6ghz Jaguar CPU that's found in the consoles should be relatively similar in performance to a Dual Core 1.6Ghz Core i3/i5. (Actually it should be less, scaling beyond multiple cores isn't a linear increase, it's a theoretical scenario.)
Poor performance? You bet, the PS4 and Xbox One are identical in this regard with their respective CPU's.
As for the DDR3, it will outperform GDDR5 in general purpose tasks because of latency, it will loose out in high-bandwidth hungry tasks like graphics. - However this is where the SRAM will provide assistance.
I'm *very* dissapointed in the Xbox One's GPU, even more so than the PS4's as it's only a Radeon 7770/7790 class in terms of compute. :(
|
Exactly, why is people always leaving out of the equation those high band 32mb Sdram?
|
Well, based on past experience on 360 with its eDRAM, that eSRAM will likely be used for "free" anti-aliasing in most games.
For comparison sake, bandwidth for each RAM:
In Xbone:
32Mb eSRAM: approx. 166GB/s
8Gb DDR3: 34.132
Add them together and you get 200Gb/s as MS marketed at their reveal. However, in real-world terms they'll be used in parallel and need to be taken separately. The 200 figure is typical marketing crap.
In PS4:
8Gb GDDR5: 176GB/s
Source: http://semiaccurate.com/2013/05/22/microsoft-subtly-admits-losing-with-xbox-one/
