PlayStation 4 technical specifications

From Wikipedia, the free encyclopedia
Jump to: navigation, search

The PlayStation 4 technical specifications describe the internal components of the PlayStation 4 video game console.

Processors and memory[edit]

The PlayStation 4 uses a semi-custom accelerated processing unit (APU) developed by AMD in cooperation with Sony and is manufactured on the TSMC 28 nm process node.[1] Its APU is a single-chip that combines a central processing unit (CPU) and graphics processing unit (GPU), as well as other components such as a memory controller and video decoder/encoder.[2][3] The console also includes secondary custom chips that handle tasks associated with downloading, uploading, and social gameplay.[4][5] These tasks can be handled seamlessly in the background during gameplay or while the system is in sleep mode.[6]

Though not much is publicly known of the PS4's audio capabilities, the console also contains a dedicated hardware audio module, which can support in-game chat with minimal external resources as well as "a very large number" of MP3 streams for use in in-game audio.[7]

APU[edit]

The main APU (2013 release) had a die size of 19 by 18.3 mm (0.75 by 0.72 in), with GPUs, CPUs and memory controllers on the same die.[8] 2013 release version APUs contained 20 GCN compute units on die,[9] two of which are thought to be present to provide redundancy to improve manufacturing yield.[10] CPUs plus CPU caches make up approximately 15% of the chip area, and the GPU compute units take up approximately 33% of the 348 mm2 (0.539 sq in) die area.[10]

Device CPU (Jaguar) GPU (GCN) Memory Special features
Cores Frequency[11] L2 Cache Cores1[12] Frequency GFLOPS Pixel Fillrate (GP/s)2 Texture Fillrate (GT/s)3 Amount Bus Width (bit) Bus Type Bandwidth (GB/s)
Sony PS4 dual 4 core modules 1.6-? GHz 2 x 2 MB 1152:72:32 800MHz 1840 25.6 57.6 8 GB 256 GDDR5 176 8 ACEs in the GPU and additional modules

Central processing units[edit]

The central processing unit (CPU) consists of two x86-64 quad-core modules for a total of eight cores,[13] which are based on the Jaguar CPU architecture from AMD.[2] Each core has 32 kB L1 instruction and data caches, with one shared 2 MB L2 cache per four core module.[14] The CPU's base clock speed is said to be 1.6 GHz, with an unknown uptick in speed for CPU-intensive usage.[15]

Graphics processing unit[edit]

The graphics processing unit (GPU) is AMD's GPGPU-capable Radeon GCN architecture, consisting of 18 compute units (CUs) for a total of 1,152 cores (64 cores per CU), that produces a theoretical peak performance of 1.84 TFLOPS.[16] This processing power can be used for graphics, physics simulation, or a combination of the two, or any other tasks suited for general purpose compute. It is a customized version of AMD's 7870 GPU, with 2 CUs disabled.[17]

Though based on AMD's GCN architecture, there are several known differentiating factors between the PS4's GPU and current-gen PC graphics cards featuring first-gen GCN architecture:

  • An additional dedicated 20 GB/s bus that bypasses L1 and L2 GPU cache for direct system memory access, reducing synchronisation challenges when performing fine-grain GPGPU compute tasks.
  • L2 cache support for simultaneous graphical and asynchronous compute tasks through the addition of a 'volatile' bit tag, providing control over cache invalidation, reducing the impact of simultaneous graphical and general purpose compute operations.
  • An upgrade from 2 to 64 sources for compute commands, improving compute parallelism and execution priority control. This enables finer-grain control over load-balancing of compute commands including superior game-engine integration.[18]

Audio processing unit[edit]

Sharing the die with the rest of the components of the APU, is an Digital signal processing SIP block that is either identical to AMD TrueAudio or shares a certain amount of similarities with it.[19]

Memory controller[edit]

The rest of the microchip consists of the on-die memory controller, which is shared by the CPU and the GPU and some additional logic concerned with memory access. With AMD being a founding member of and Sony a contributor to the HSA Foundation the uncore of the PlayStation 4 supports several of the features promoted by the Heterogeneous System Architecture like e.g. hUMA (heterogeneous Uniform Memory Access). This means the system memory is not partitioned, so that a portion of it is exclusively available to the GPU, but unified, hence enabling hardware zero-copy.[20][21]

System memory (RAM)[edit]

The PS4 contains a total of 8 GiB (16×4 Gbit (512 MiB) memory chips[22]) of GDDR5 unified system memory, and is capable of running at a maximum clock frequency of 2.75 GHz (5500 MT/s) with a maximum bandwidth of 176 GB/s.[16][23] This is 16 times the amount of RAM found in the PS3 and is expected to give the console considerable longevity.[24][25] The unified memory architecture allows the CPU and GPU to access a consolidated memory, removing the need for separate, dedicated memory pools.[25]

Auxiliary processor[edit]

PS4 includes a secondary ARM processor (with separate 256 MiB of RAM) to assist with background functions and OS features.[26]

Storage[edit]

Blu-ray disc[edit]

The read-only optical drive reads Blu-ray discs at 6x constant angular velocity for a maximum read speed of 27 MB/s – a significant upgrade from the PS3's 2x speeds that were capped at 9 MB/s.[25][27] To further enhance optical drive performance, the PS4 features a hardware on-the-fly zlib decompression module (a special piece of hardware used to quickly decompress the data on the Blu-ray disc, which has been compressed to save space and bandwidth), allowing for greater effective bandwidth, whilst at the same time, the console continuously caches data onto its hard disk, even buffering unread data when a game is not actively accessing the optical drive, forming part of Sony's PlayGo strategy.[7]

A new Blu-ray Disc technology was designed to support 4K resolution.[25] Although the console supports photos and videos at 4K resolution, the system is not expected to render games at 4k.[28][29]

Hard drive[edit]

The console includes a 500 GB hard drive for additional storage,[30] which can be upgraded by the user.[31]

Other[edit]

An additional 256 MB chip, (using a 2 Gbit DDR3 SDRAM chip in the 2013 release) is fitted, thought to be used by the auxiliary processor.[32] An additional 32 MB (256 Mbit) flash memory chip is also fitted.[33]

Input and output[edit]

The PlayStation 4 features 802.11 b/g/n WiFi connectivity, Ethernet (10BASE-T, 100BASE-TX and 1000BASE-T), Bluetooth 2.1, and two USB 3.0 ports. An auxiliary port is also included for connection to the PlayStation Camera, a motion detection digital camera device first introduced on the PS2.[16] A mono headset, which can be plugged into the DualShock 4, comes bundled with the system.[34] Audio/video output options include HDMI and optical S/PDIF.[16] The PlayStation 4 does not have an analog audio/video output.[35]

Hardware modules[edit]

Module Name Purpose/capability Ref.
AMD TrueAudio This package of user-programmable audio DSPs offloads audio processing from the CPU. Possible effects include 3D audio, audio compression and decompression, reverb, and voice stream processing. [36]
Upload/Download Capable of uploading and downloading data to the hard disk
Video compression/decompression Capable of encoding/decoding video formats on-the-fly[examples needed]
Zlib decoder Decoding of compressed data from the Blu-ray optical drive
WiFi module Marvell Wireless Avastar 88W8797 Wireless communication : IEEE 802.11 b/g/n, Bluetooth 2.1(EDR).
Skyworks 2614B 315BB
[37]
HDMI module HDMI output [32]
Ethernet controller Marvell Alaska 88EC060-NNB2 Ethernet 10/100/1000 support [33]
USB controller USB 3.0 support [38]

Power usage[edit]

Power usage[39]
Standby mode 10 W
Standby mode (with download) 70 W
Idle on menu 89–91 W
Blu-ray 93–96 W
Netflix 93 W
Game installation 108–116 W
Gaming (Resogun) 130–139 W
Gaming (Killzone) 144–151 W

The PS4 is powered via an internal "universal" 110–240 V AC power supply,[40] with a maximum power rating of 250 W.[41] According to tests by Eurogamer, initial consoles drew approximately 80 W when operational in menu mode, rising to around 110–120 W in gameplay, with peaks of 140 W with both gameplay and menus active,[42] tests by the Natural Resources Defense Council showed similar power consumption figures with 137 W gameplay peaks (with PS4 Camera connected); power consumption in (internet connected) standby mode was measured at 8.8 W under the same conditions, with a lower power "off" state drawing 0.5 W.[43]

The PS4 cooling system uses a single centrifugal fan, which draws air in from both sides of the console, split into flows above and below the main PCB, before entering the fan from top and bottom; the fan exhaust then cools the main APU via a heat pipe–connected heatsink, with the exhaust passing over the main power supply before being emitted from the rear of the console.[41][44][45]

References[edit]

  1. ^ "A Look at Sony’s Playstation 4 Core Processor". ChipWorks. 15 November 2013. Archived from the original on 16 November 2013. Retrieved 16 November 2013. 
  2. ^ a b Taylor, John (February 21, 2013). "AMD and The Sony PS4. Allow Me To Elaborate.". Retrieved February 25, 2013. 
  3. ^ "「壁のないゲーム環境」を目指すPS4". 
  4. ^ Conditt, Jessica (February 20, 2013). "PS4 allows playing games as they're downloading". Retrieved February 24, 2013. 
  5. ^ Williams, Mike (February 20, 2013). "Articles Register Sony reveals developer-centric PlayStation 4". Retrieved February 24, 2013. 
  6. ^ Seifert, Dan (February 20, 2013). "Sony PlayStation 4 games can be played while they are downloading". Retrieved February 24, 2013. 
  7. ^ a b "Inside the PlayStation 4 With Mark Cerny". Retrieved June 8, 2013. 
  8. ^ Young et al. 2013, The Main Processor, p.1.
  9. ^ Young et al. 2013, The Main Processor, Image 20 of 40.
  10. ^ a b "A Look at Sony’s Playstation 4 Core Processor", www.chipworks.com, 15 Nov 2013 
  11. ^ "Post regarding the frequency of the APU". Sony. Retrieved 24 July 2014. 
  12. ^ "PlayStation 4 Xbox One Comparison Chart". Vgleaks. Retrieved 24 July 2014. 
  13. ^ AMD’s Jaguar Architecture: The CPU Powering Xbox One, PlayStation 4, Kabini & Temash
  14. ^ Orlan, Kyle (28 March 13), "Sony dives deep into the PS4’s hardware power, controller features", www.wired.co.uk 
  15. ^ http://www.bit-tech.net/gaming/ps3/2013/11/29/playstation-4-review/4
  16. ^ a b c d Sony Computer Entertainment Inc. (February 21, 2013). "SONY COMPUTER ENTERTAINMENT INC. INTRODUCES PLAYSTATION®4 (PS4™)". Retrieved February 25, 2013. 
  17. ^ Joel Hruska. "Reverse engineered PS4 APU reveals the console’s real CPU and GPU specs". Retrieved January 5, 2014. 
  18. ^ Cerny, Mark. "Inside the PlayStation 4 With Mark Cerny". Gamasutra. Retrieved 29 June 2013. 
  19. ^ "Playstation 4 Audio DSP Based On AMD’s PC TrueAudio Technology". 
  20. ^ "PlayStation supports unified memory, Xbox One does not". Heinz Heise. 2013-08-21. 
  21. ^ "Analysis: PlaySation 4 beats Xbox One". Heinz Heise. 2013-05-23. 
  22. ^ "Interview: PS4 Developer Discusses Design Philosophy". April 1, 2013. Retrieved November 11, 2013. 
  23. ^ Femmel, Kevin (February 20, 2013). "Sony reveals the PS4: New controller, 8GB RAM, doesn’t play PS3 discs and more". Gimme Gimme Games. Retrieved February 21, 2013. 
  24. ^ Yin-Poole, Wesley (February 22, 2013). "PS4: PC-like architecture, 8GB RAM delight developers". Retrieved February 25, 2013. 
  25. ^ a b c d Leadbetter, Richard (February 21, 2013). "Spec Analysis: PlayStation 4". Eurogamer.net. Retrieved February 25, 2013. 
  26. ^ Sony PlayStation 4 Torn Down, Reveals Secondary ARM Processor, nextpowerup.com, November 16, 2013.
  27. ^ Kuchera, Ben (January 17, 2007). "Is Blu-ray really a good medium for games?". Ars Technica. Retrieved February 25, 2013. 
  28. ^ JC Fletcher (February 21, 2013). "PS4 will output video in 4K, but not games". Joystiq. Retrieved February 21, 2013. 
  29. ^ Alexa Ray Corriea (February 21, 2013). "PS4 will support 4K for 'personal contents' like photos, but not games". Polygon (website). Retrieved February 21, 2013. 
  30. ^ Sony Computer Entertainment (June 11, 2013). "PLAYSTATION®4 (PS4™) DESIGN AND PRICE UNVEILED, AVAILABLE AT $399 IN U.S. AND AT €399 IN EUROPE". www.scei.co.jp. Retrieved June 11, 2013. 
  31. ^ "Sony's PlayStation 4 Eye is a $59 add-on, PS4 packs an upgradable 500GB HDD inside". Engadget. June 10, 2013. Retrieved June 10, 2013. 
  32. ^ a b Young et al. 2013, Other Devices of Interest.
  33. ^ a b Ifixit PS4 teardown, step 20
  34. ^ Sony Computer Entertainment Inc. (21 February 2013). "SONY COMPUTER ENTERTAINMENT INTRODUCES WIRELESS CONTROLLER FOR PLAYSTATION®4 (DUALSHOCK®4) AND PLAYSTATION®4 EYE". Retrieved February 26, 2013. 
  35. ^ Grant Brunner (June 18, 2013). "Sony issues correction: PS4 will not support analog output [Updated]". ExtremeTech. Retrieved June 20, 2013. 
  36. ^ Smith, Ryan (November 13, 2013). "PS4 Spec Update: Audio DSP Is Based On AMD’s TrueAudio". AnandTech. Retrieved January 19, 2014. 
  37. ^ Young et al. 2013, The WiFi Module.
  38. ^ Ifixit PS4 teardown, step 21
  39. ^ Orland, Kyle (November 15, 2013). "PlayStation 4 hardware review: Off to a mixed start". Ars Technica. Retrieved November 23, 2013. 
  40. ^ Ifixit PS4 teardown, step 14
  41. ^ a b "PS4のエレガントなデザインを可能にしたこだわりの冷却設計とは――PS4はPS3で培ったノウハウの集大成", www.famitsu.com (in japanese), 17 January 2014 
  42. ^ Leadbetter, Richard (29 November 2013), "Hardware Test: PlayStation 4", www.eurogamer.net 
  43. ^ Hruska, Jeol (18 December 2013), "PS4, Xbox One power consumption analysis points to Sony advantage and future efficiency gains", www.extremetech.com 
  44. ^ Strickland, Derek (20 January 2014), "Sony engineer unveils the ‘functional beauty’ of the PS4′s cooling system", vr-zone.com 
  45. ^ "静音性と冷却性を両立したPlayStation 4 本体設計者が語る改善の歴史", www.inside-games.jp (in japanese), 16 January 2014 

Sources[edit]