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Processor specifications on next-generation Xbox

Rumors about the next-generation Xbox have been circulating for years. The next-generation Xbox, or Xbox 720 as some call it, is expected to launch later this year. There are some indications that Microsoft might unveil the next-generation Xbox ahead of E3 2013. Other rumors have put the price of the next-generation Xbox at around $400.

While most details of the next-generation console remain to be seen, leaked specs have surfaced this week that give some hardware specifications for the processor that will be the brains of the next-generation Xbox. The processor has x64 architecture and eight cores running at 1.6 GHz. Each of those CPU threads has its own 32 kB L1 instruction cache and 32 kB L1 data cache. Each module of the four CPU cores has its own 2 MB L2 cache giving the processor a total of 4 MB of L2 cache.

VGLeaks reports that each core has one fully independent hardware thread and doesn't share execution resources. Each hardware thread is also reportedly able to issue two instructions per clock cycle. The next-generation Xbox GPU is reportedly a custom D3D 11.1 class unit running at 800 MHz with 12 shader cores and 768 total threads.

Each of those threads is reportedly able to perform one scaler multiplication and additional operation per clock. A natural user interface sensor is also always present. That processor is reportedly paired with 8 GB of DDR3 RAM and 32 MB of fast embedded SRAM.

The machine is also paired with a 6x Blu-ray drive, gigabit Ethernet, Wi-Fi, Wi-Fi Direct, and various hardware accelerators for image, video, and audio codecs. The machine is also tipped include a Kinect multichannel echo cancellation hardware chip and cryptography engines for encrypting and decrypting content.

Source: VGLeaks

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By augiem on 1/22/2013 3:09:33 PM , Rating: 2
I'm curious about this too. But looking at Wikipedia's article on the Radeon R1000 family at, the 7870 has 1280 Unified shaders, 80 TMUs, and 32 ROPs. When the article says "shader cores", are they referring to TMUs?

By dubldwn on 1/22/2013 5:03:12 PM , Rating: 3
No a 7870 has 1280 shader processors in 20 compute units (not TMU’s)

7850 has 1024 shader processors in 16 compute units
7770 has 640 shader processors in 8 compute units

*I think* this next xbox gpu will have 768 shader processors in 12 compute units

So, inbetween a 7770 and 7850.

By augiem on 1/22/2013 6:25:56 PM , Rating: 2
Ahh, thanks. That might be a nice column to add to the wikipedia article (

According to this page
the 7770 has 640 shader processors in 10 compute units and runs at 1GHz. So I'd guess maybe slightly better than a 7770, considering its running at a lower clock but has more shader procs.

By dubldwn on 1/22/2013 7:10:43 PM , Rating: 2
oooops you're right...10. 64*10=640! 7750 has 8.

By augiem on 1/23/2013 12:31:14 AM , Rating: 2
Okay, so looks we can basically expect Radeon 7770 performance. Theoretical max calculations per second is roughly equal.
"The Radeon HD 7770’s 1 GHz Cape Verde GPU employs all 640 available shaders, theoretically yielding 1.28 TFLOPS of compute performance"

From the VGLeaks article linked above (link was incorrect)
at peak performance, the GPU can effectively issue 1.2 trillion floating-point operations per second

“So far we have not seen a single Android device that does not infringe on our patents." -- Microsoft General Counsel Brad Smith

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