Nintendo GameCube System Specifications

MPU (“Microprocessor Unit”)

Custom IBM Power PC “Gekko”

Manufacturing process : 0.18 micron IBM copper wire technology
Clock frequency : 485 MHz
CPU capacity : 1125 Dmips (Dhrystone 2.1)
Internal data precision : 32-bit Integer & 64-bit floating-point
External bus : 1.3GB/second peak bandwidth
(32-bit address space, 64-bit data bus 162 MHz clock)
Internal cache : L1: instruction 32KB, data 32KB (8 way)
L2: 256KB (2 way)

System LSI : Custom ATI/Nintendo “Flipper”

Manufacturing process : 0.18 micron NEC Embedded DRAM Process
Clock frequency : 162 MHz
Embedded frame buffer : Approx. 2MB
sustainable latency : 6.2ns (1T-SRAM)
Embedded texture cache : Approx. 1MB
sustainable latency : 6.2ns (1T-SRAM)
Texture read bandwidth : 10.4GB/second (Peak)
Main memory bandwidth : 2.6GB/second (Peak)
Pixel depth : 24-bit color, 24-bit Z buffer
Image processing functions : Fog, subpixel anti-aliasing,
8 hardware lights, alpha blending,
virtual texture design, multi-texturing,
bump mapping, environment mapping, MIP mapping,
bilinear filtering, trilinear filtering, anisotropic filtering,
real-time hardware texture decompression (S3TC),
real-time decompression of display list,
HW 3-line deflickering filter.
Sound Processor : custom Macronix 16-bit DSP
DSP Instruction Memory : 8KB RAM + 8KB ROM
DSP Data Memory : 8KB RAM + 4KB ROM
DSP Clock Frequency : 81 MHz
Performance : 64 simultaneous channels, ADPCM encoding
Sampling Frequency : 48KHz

System Floating-point Arithmetic Capability

10.5 GFLOPS (Peak) (MPU, Geometry Engine, HW Lighting Total)

Real-world polygon

6 million to 12 million polygons/second (Peak)
(Assuming actual game conditions with complex models, fully textured, fully lit, etc.)

System Memory (Total 40MB)

Main Memory “Splash”

24 MB MoSys 1T-SRAM, Approximately 10ns Sustainable Latency


16 MB (81MHz DRAM)

Disc Drive

CAV (Constant Angular Velocity) System
Average Access Time : 128ms
Data Transfer Speed : 16Mbps to 25Mbps


3 inch NINTENDO GAMECUBE Disc based on Matsushita’s Optical Disc Technology,
Approx. 1.5GB Capacity


Controller Port x4
Memory Card Slot x2
Analog AV Output x1
Digital AV Output x1
High-Speed Serial Port x2
High-Speed Parallel Port x1
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