The first realistically rumored specs for the Playstation 4 leaked out on Friday complete with what level of CPU and GPU power we should expect from Sony's next-gen console.
Of note, these specs point toward a four core AMD x86 processor based on the "Steamroller" design running at 3.2 GHz. This design integrates a CPU and GPU on a single die which should provide some extra power to the console's graphics.
The GPU is an AMD "Tahiti" design which is part of the recently released Radeon 7900 series of graphics cards for the PC. It supports Microsoft's Direct X11 graphics API and runs at 800 MHz.
The move to an all AMD CPU and GPU combination is interesting but should help Sony not only keep production costs low but help developers create multi-platform games on the Playstation 4.
While this may seem very powerful and expensive now, by the time the Playstation 3 releases in late 2013 or early 2014, it will be at least a generation behind PC hardware at the time. The PS3 and Xbox 360 were in a similar generation behind situation when they were released so that's what makes these specs believable.
Note that the following hardware is the rumored specs for alpha dev kits sent to developers. Anyone of these could change between now and then the Playstation 4 releases.
- 4 core (2 core pairs) 3.2 GHz AMD x86 (Steamroller)
- aggregate, 10x PS3 PPU performance
- 512 KByte L2 per core pair
- 64 bit pointers
- AMD R10x series GPU @ 800 MHz (Tahiti)
- aggregate 10x RSX performance, 1.84 TFlops
- cheap branching
- 18 compute units, focus on fine grained compute & tessellation
- 2 GByte UMA, pushing for 4 GByte
- 192 GByte/ sec non-coherent access for e.g. GPU
- 12 GByte/ sec coherent access for CPU
- >50% longer memory latency for CPU/ GPU compared to PC!!!
- DXT is lowest bpp texture compression format
- 50 GByte BD drive
- PCAV, between 3.3 and 8x BD, most likely clamped to 6x
- automatic background caching to HDD
- HDD SKU with at least 380 GByte
- downloadable games
- video encoder/ decoder
- audio processing unit, ~200 concurrent MP3 streams
- HW zlib decompressor