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[TH] Xbox One's massive, custom CPU can pick you out of a lineup - Page 2

post #11 of 42
Quote:
Originally Posted by Alatar View Post

xbox-one-full-soc-specs-100051503-large.png
Quote:
Physically, the system-on-a-chip at the heart of the Xbox One is 363 square millimeters. But the real whopper is the amount of logic integrated within it: 5 billion transistors. Although Wikipedia isn’t necessarily the final arbiter, the Xbox One is possibly the largest chip manufactured to date, with a comparable number to Intel’s 64-core Xeon Phi coprocessor for supercomputers, and easily topping Intel’s 8-core “Poulsen” Itanium that the chip maker launched in 2012.

Source

Okay these guys clearly don't know a thing about big chips if they think this is the biggest one ever made but at least you guys can enjoy the newly released slides.
Z196 MCM anyone?
 
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post #12 of 42
Great SoC and the largest & most powerful ever created. What we shouldn't do is compare this to over-the-counter hardware because it will get outperformed by this pretty easily. With such a small pool of RAM accessible by the GPU, they had to make pipeline optimizations which aren't found in the desktop hardware.

Whats more, is that these SoCs have a lot of silicon dedicated to DSP/decoding/encoding that free up r/w cycles

Quote:
Originally Posted by lacrossewacker View Post

47MB storage on chip? I suppose they mean 32mb of that ESRAM and 15mb of L2/L3 cache?

Yes and there is likely cache built for redundancies. Remember, its a very large chip so they had to build in redundancies to improve yields.
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post #13 of 42
Quote:
Originally Posted by BizzareRide View Post

Yes and there is likely cache built for redundancies. Remember, its a very large chip so they had to build in redundancies to improve yields.

I think they've just added up all the caches in entire chip. CPU, GPU, ESRAM etc.
Couple of more interesting points about this:
- audio processor with 15.4 GFLOPs of power
- 15 application offload accelerators (cache coherent with the CPU)
- some SoC components (audio processor) use ARM's AXI bus standard and AMD has created/licensed a bridge to their internal bus
- ^ the above implies that AMD could easily hookup radeon graphics to ARM CPUs in a cache coherent way or that the SoC was initially ARM based

Other than that i'd really like to get my hands on a developer guide. Microsoft could have easily added additional vector processors to supplement the main CPU and GPU.

Nvidia's graphics chips may have been large, but they were nowhere near as complex (heterogeneous) as this. Good work, microsoft soc team and AMD!
post #14 of 42
Quote:
Originally Posted by BizzareRide View Post

Whats more, is that these SoCs have a lot of silicon dedicated to DSP/decoding/encoding that free up r/w cycles
Yes and there is likely cache built for redundancies. Remember, its a very large chip so they had to build in redundancies to improve yields.


You hit the nail on the Head
Quote:
To deal with the specter of defects, Sell said Microsoft designed in redundancies into the chip where it could so that if one section was inoperable, it doesn’t kill the whole chip. Nevertheless, it means that it won’t be easy to churn out millions of these chips.

here's some more info

Quote:
To help make the chip use less power, Microsoft designed small islands and gates within the chip that could switch off certain areas so the overall chip consumes less power. Such techniques are standard in big chip projects these days, and they mean that only the parts of a chip that are being used are drawing power.

The central processing unit (CPU) has eight 64-bit Jaguar cores designed by AMD.

The graphics section of the main processor has 15 special processors that can handle things like graphics or physics processing. Data highways can transfer bits at a rate of 200GBs per second or more across different parts of the chip. The audio subsystem has two dedicated vector cores.

The Xbox One has 8GB of shared main memory known as dynamic random access memory. It also has a Blu-ray drive and a 500GB hard disk.
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post #15 of 42
I wonder why sony hasn't shown anything to do with the internals of there system, we have seen the internals of xb1 and now the chip!
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post #16 of 42
This is nowhere near the biggest chip ever... Not by a long shot. FPGAs blow this out of the water.
post #17 of 42
Quote:
Originally Posted by Phaedrus2129 View Post

This is nowhere near the biggest chip ever... Not by a long shot. FPGAs blow this out of the water.

That is sort of comparing apples to oranges though....

Very different process nodes, different requirements/uses/design...
Edited by DuckieHo - 8/27/13 at 8:47am
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post #18 of 42
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post #19 of 42
Quote:
Originally Posted by TheRic89 View Post

IBM's new Power8 is 650mm2.


http://wccftech.com/ibm-power8-processor-architecture-detailed/

So expensive.... I am in the process of getting my group off AIX+POWER6 onto RHEL+Xeons.
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post #20 of 42
you guys are all silly with facts and stuff.
moar numbers = moar better and the xbone is the bestest.
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