Editing Graphics Synthesizer

Jump to navigation Jump to search
Warning: You are not logged in. Your IP address will be publicly visible if you make any edits. If you log in or create an account, your edits will be attributed to your username, along with other benefits.

The edit can be undone. Please check the comparison below to verify that this is what you want to do, and then publish the changes below to finish undoing the edit.

Latest revision Your text
Line 1: Line 1:
== Overview ==
== Overview ==
"GS" stands for Graphics Synthesizer. It's the PlayStation®2's co-processor that's responsible for rendering the graphics (but is also used by some games for additional calculations and other purposes). It runs at half of the Emotion Engine's Clock speed at 147.456 MHz.
The first revision released, CXD2934GB, is known to have been manufactured using a 180 nm process and to consume 19 W of power (calculated from the official information that the initially released [[Emotion Engine]] consumed 18 W of power and that EE and GS together initially consumed 37 W of power).
The first revision released, CXD2934GB, is known to have been manufactured using a 180 nm process and to consume 19 W of power (calculated from the official information that the initially released [[Emotion Engine]] consumed 18 W of power and that EE and GS together initially consumed 37 W of power).


There have been die-shrinks and optimizations over the years.
There have been die-shrinks and optimizations over the years.
== Revisions ==
* Press Release
** 279 mm² die size
** Announced at ISSCC 99, not used in any final/consumer consoles
* 0.8: CXD2934GB
** 188 mm² die size
** 19 W power consumption
** metal IHS
** Copyright date: 1999
** Used on [[motherboards]]: GH-001, GH-003, GH-005, GH-007, GH-012, GH-014, GH-016
** [[File:Ps9pRpU.jpg|200px]]
* 1.5: CXD2944GB
** 180nm process node, 108 mm² die size
** plastic case, very different pinout
** Copyright date: 2000
** Used on motherboards: GH-004, GH-006, GH-008, GH-010, GH-013
* 1.9: CXD2949GB (reported as CXD2949BGB in PS2ident)
** 96 mm² die size (?)
** different pinout, no analog RGB output (now generated by external DAC)
** Copyright date: 2001
** Used on motherboards: GH-015, GH-017 - GH-023 (except GH-016)
* 1.9: CXD2949BGB
** 96 mm² die size (?)
** Copyright date: 2001
** Used on motherboards: GH-015, GH-017 - GH-023 (except GH-016)
* 1.11: CXD2949CGB
** 83 mm² die size (?)
** Copyright date: 2002
** Used on motherboards: GH-023 - GH-032 (Confirmed use on GH-032 boards?)
* 1.11: CXD2949DGB
** 73 mm² die size (?)
** Copyright date: 2003
** Used on motherboards: ? - GH-032-54 - GH-041
* CXD2972GB
** 49 mm² die size
** likely 90 nm process
** Copyright date: 2006
** Used on motherboards: PlayStation 3 with COK-002/COK-002W (CECHC and CECHE models)
** Dieshots confirming that this is indeed just a GS and not an EE+GS variant (unlike EE+GS in CECHA and CECHB PS3 consoles)<br/>
[[File:0fB7Z5n.jpg|200px]] [[File:je066bM.jpg|200px]] [[File:2HjL1BY.jpg|200px]] [[File:TrNio8T.jpg|200px]] <br/>
* 1.1?: CXD2980GB
** Differences to the other CXD2980xGB revisions are unknown
** GS was made a separate IC again after combining EE with RDRAM, IOP and other components instead
** Copyright date: 2007
** Used on motherboards: GH-061-22 (likely others as well; please contribute)
* 1.14: CXD2980AGB (sometimes reported as CXD2980CGB in PS2ident)
** Differences to the other CXD2980xGB revisions are unknown
** GS was made a separate IC again after combining EE with RDRAM, IOP and other components instead
** Copyright date: 2007
** Used on motherboards: GH-061-12 (likely others as well; please contribute)
* 1.14: CXD2980CGB
** Differences to the other CXD2980xGB revisions are unknown
** GS was made a separate IC again after combining EE with RDRAM, IOP and other components instead
** Has no cooling at all besides airflow
** Copyright date: 2007
** Used on motherboards: GH-061-51, GH-070-42 (likely others as well; please contribute)
* 1.15: CXD2980BGB
** Differences to the other CXD2980xGB revisions are unknown
** Has no cooling at all besides airflow
** 49 mm² die size (identical to CXD2972GB found on PS3's COK-002, despite the BGA case being much smaller)
** likely 90 nm process
** Used on motherboards: GH-061-12 - GH-072-42, can thus be used in every 790xx and 900xx slim PS2
** Copyright date: 2007


== Specifications ==
== Specifications ==
* Parallel rendering processor with embedded DRAM "Graphics Synthesizer" (GS) clocked at 147.456&nbsp;MHz
* Parallel rendering processor with embedded DRAM "Graphics Synthesizer" (GS) clocked at 147.456&nbsp;MHz
* 279&nbsp;mm² die (combined EE+GS in SCPH-7500x: 86&nbsp;mm², 53.5 million transistors)
* Programmable CRT controller (PCRTC) for output
* Programmable CRT controller (PCRTC) for output
* Pixel pipelines: 16 without any texture mapping units (TMU), however half of pixel pipelines can perform texturing, so fillrate is either 16 pixels per clock with untextured 2400 Mpixels; or 8 pixels per clock with 1200 megapixels with bilinear texturing, and 1200 megatexels (bilinear).
* Pixel pipelines: 16 without any texture mapping units (TMU), however half of pixel pipelines can perform texturing, so fillrate is either 16 pixels per clock with untextured 2400 Mpixels; or 8 pixels per clock with 1200 megapixels with bilinear texturing, and 1200 megatexels (bilinear).
Line 82: Line 17:
* Display color depth: 32-bit (RGBA: 8 bits each)
* Display color depth: 32-bit (RGBA: 8 bits each)
* Dedicated connection to main CPU and VU1
* Dedicated connection to main CPU and VU1
* Overall pixel fillrate: 16 × 147&nbsp;Mpix/s = 2.352&nbsp;gigapixel/s
* Overall pixel fillrate: 16 × 147{{nbsp}}Mpix/s = 2.352&nbsp;gigapixel/s
** 1.2 gigapixel/s (with Z-buffer, alpha, and texture)
** 1.2 gigapixel/s (with Z-buffer, alpha, and texture)
** With no texture, flat shaded: 2.4&nbsp;Gpix/s (75,000,000 32-pixel raster triangles)
** With no texture, flat shaded: 2.4{{nbsp}}Gpix/s (75,000,000 32-pixel raster triangles)
** With 1 full texture (diffuse map), Gouraud shaded: 1.2&nbsp;Gpix/s (37,750,000 32-bit pixel raster triangles)
** With 1 full texture (diffuse map), Gouraud shaded: 1.2{{nbsp}}Gpix/s (37,750,000 32-bit pixel raster triangles)
** With 2 full textures (diffuse map and specular, alpha, or other), Gouraud shaded: 0.6&nbsp;Gpix/s (18,750,000 32-bit pixel raster triangles)
** With 2 full textures (diffuse map and specular, alpha, or other), Gouraud shaded: 0.6{{nbsp}}Gpix/s (18,750,000 32-bit pixel raster triangles)
** Texture fillrate: 1.2&nbsp;Gtexel/s
** Texture fillrate: 1.2&nbsp;Gtexel/s
** Sprite drawing rate: 18.75 million/s (8×8 pixels)
** Sprite drawing rate: 18.75 million/s (8×8 pixels)
Line 99: Line 34:
* Multi-pass rendering ability
* Multi-pass rendering ability
** Four passes: 300&nbsp;Mpixel/s (300&nbsp;Mpixels/s divided by 32&nbsp;pixels = 9,375,000&nbsp;triangles/s lost every four passes)
** Four passes: 300&nbsp;Mpixel/s (300&nbsp;Mpixels/s divided by 32&nbsp;pixels = 9,375,000&nbsp;triangles/s lost every four passes)
== Revisions ==
* 0.8: CXD2934GB
** 180 nm process, 188 mm² die size
** metal IHS
** Copyright date: 1999
** Used on [[motherboards]]: GH-001, GH-003, GH-005, GH-007, GH-012, GH-014, GH-016
* 1.5: CXD2944GB
** 108 mm² die size
** plastic case
** Copyright date: 2000
** Used on motherboards: GH-004, GH-006, GH-008, GH-010, GH-013
* 1.9: CXD2949GB / (reported as CXD2949BGB in PS2ident)
** 96 mm² die size
** Copyright date: 2001
** Used on motherboards: GH-015 - GH-023
* 1.11: CXD2949CGB
** 83 mm² die size
** Copyright date: 2002
** Used on motherboards: GH-023 - ?
* 1.11: CXD2949DGB
** 73 mm² die size
** Copyright date: 2003
** Used on motherboards: ? - GH-032-54 - ?
* CXD2972GB
** 49 mm² die size
** likely 90 nm process
** Copyright date: 2006
** Used on motherboards: PlayStation 3 COK-002/COK-002W (Models CECHC and CECHE) <br/>
<imgur w=240>0fB7Z5n.jpg</imgur> <imgur w=240>je066bM.jpg</imgur> <imgur w=240>2HjL1BY.jpg</imgur> <imgur w=240>TrNio8T.jpg</imgur> <br/>
* 1.15: CXD2980GB
** GS was made dedicated again after combining EE with RDRAM, IOP and other components instead, has no cooling at all besides airflow
** Used on motherboards: GH-061-12 - GH-072-42, thus used in every 79XXX and 90XXX slim PS2
* CXD2980BGB
** Copyright date: 2007
** Used on motherboards:
* 1.14: CXD2980CGB
** Used on motherboards:
Please note that all contributions to PS2 Developer wiki are considered to be released under the GNU Free Documentation License 1.2 (see PS2 Developer wiki:Copyrights for details). If you do not want your writing to be edited mercilessly and redistributed at will, then do not submit it here.
You are also promising us that you wrote this yourself, or copied it from a public domain or similar free resource. Do not submit copyrighted work without permission!

To protect the wiki against automated edit spam, we kindly ask you to solve the following hCaptcha:

Cancel Editing help (opens in new window)
Retrieved from "http://www.psdevwiki.com/ps2/Graphics_Synthesizer"