Patent knowledge. Technology expertise. Market understanding.

Patent knowledge. Technology expertise. Market understanding.

Patent knowledge. Technology expertise. Market understanding.

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Inside the Sony PS4

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Contributed by C. Young, T. Crane, J. Morrison, D. James and P. Gamache

We proudly partnered with iFixit for the PS4 launch and lined up outside of EB Games in Ottawa for the midnight release. Excitement was in the air, to say the least. It’s hard to believe that it’s already been seven years since Sony released their Playstation 3.

You’d think that in seven years, Sony would incorporate a fair bit of design innovation and that is in fact what we have here. In that time span, the market has evolved from gaming consoles to full fledged living room hubs that incorporate games, movies, music, social and much more. Despite the home media revolution, Sony’s marketing messaging has made it very clear that the PS4 is first and foremost a gaming console.

The new PS4’s design blends Sony’s traditional jet black color with a slim and lustrous look. It’s very similar in size to Sony’s second generation PS3 and slightly more compact than its rival Xbox One. One of the first things we noticed was that Sony’s engineers managed to find a way to fold the power supply inside the box, leaving clumsy gamers with no peripheral power brick to trip over. For a look at iFixit’s full teardown on the PS4 click here.

Feature top Pic 682 01

Thumbnail Pic 600 01   Feature top Pic 682 02   Feature top Pic 682 03   Thumbnail Pic 600 06   Thumbnail Pic 600 05   Feature top Pic 682 04

What’s Inside?

We know for sure that the PS4 is powered by a single chip custom CPU/GPU processor including a low power x86-64 AMD 8 core CPU block and a 1.84 TFLOPS AMD Radeon GPU block packaged in this single SoC. We also expected to find 8 GB GDDR5 RAM, 500 GB removable and upgradable hard drive storage, 802.11 b/g/n Wireless and Bluetooth 2.1 and USB 3.0 + Ethernet 10/100/1000.

Feature top Pic 682 05

Board Back   Board front   Main CPU nice shot   Main CPU nice shot2

The Main Processor

Based on widely circulated information, the PS4 uses a single die CPU/GPU and one main shared 8GB memory array. We therefore expected to see a single die under the main processor package, with no separate DRAM die in package, and no embedded DRAM on the main die. This is indeed what we have found. A huge monolithic die of 19 x 18.3 mm.

SONY CXD90026G (feature2)

Monster SoC   XRay 01   XRay 02   Top Metal CPU   die corner  Annotated Poly PS4

The DRAM

Many readers will have seen Sony’s own teardown video of the PS4. From the view of the mainboard seen in this video, one might have expected the eight DRAM die visible on the top of the board to be eight 1GB DRAM ICs. In fact there are eight DRAM ICs on the top of the board and eight on the bottom of the board. Given Sony’s published specs giving the amount of main memory at 8GB, we can conclude that each of the 16 DRAM die are 512MB.

DRAM feature

DRAM top metal   DRAM top metal die corner   DRAM XRay   DRAM Xray 2

The Network Co-Processor

One of the convenient new features of this generation of console is the capability they have to download content while in standby mode. This is enabled by dedicating silicon to that specific task, such that the majority of sub-systems can be turned off while keeping that functionality alive. The PS4’s dedicated network processor appears to be a custom ASIC by Marvell, judging from the package markings.

Network Co Pro

01   Network co procss    Network co processor   03   02

The WiFi Module

The WiFi Module featuring a metal lid and Marvell package markings contains an interesting component. The WiFi engine behind the PS4 is a Marvell Avastar 88W8797. The Avastar features multiple-input multiple-output (MIMO) Wi-Fi 802.11 a/b/gn/ + Bluetooth 4.0 with Low Energy Support (BLE) plus FM radio and an embedded PMIC block. Interestingly, this Avatar was designed for mobile applications like smart phones and tablets, but to date Chipworks has only ever observed this Marvell device inside one other product, The Microsoft Surface Tablet back in October of 2012. Do you think Sony got a deal on this? The WiFi module also contains two Skyworks/SiGe WiFi front end modules. The Avastar die measures 5.6 x 6.9 mm and was fabricated at TSMC and  appears to be fabricated on a 65 nm mixed signal process technology.

WiFi Module

B00594116AED   Wifi package   Wifi package XRay   Marvell top metal   Marvell top metal 2 

Other Devices of Interest

The remaining major components found tonight include Samsung 2G DDR 3 SDRAM used by the network co-processor, Sony Computer Entertainment Inc. (SCEI) device marked only as “1327KM449” and Panasonic’s MN86471A HDMI Communication LSI. Stay tuned as analysis continues to come out of our labs…

Samsung DRAM   Unknown SCEI   HDMI controller   …