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Radeon HD 4890

General
ManufacturerATI
SeriesRadeon R700(HD 4800)
GPU NameRV790
ArchitectureTeraScale
GenerationRadeon R700(HD 4800)
Release DateApr 2009
Bus InterfacePCIe 2.0 x16
Process & Die
FoundryTSMC
Process Size55 nm
Transistors959 M
Transistor Density3,400 K/mm²
Die Size282 mm²
Clock Speeds
Base Clock850 MHz
Boost Clock850 MHz
Memory
VRAM1 GB
Memory TypeGDDR5
Memory Clock975 MHz
Memory Bus256-bit
Bandwidth124.8 GB/s
Processing Units
Shading Units800
TMUs40
ROPs16
SMs0
Tensor Cores0
RT Cores0
Cache
L1 Cache16 KB
L2 Cache0.25 MB
Power & Thermals
TDP190 W
Suggested PSU450 W
Power Connectors2x 6-pin
Dimensions
Board Length241 mm
Board Width111 mm
Outputs
Display Connectors2x DVI, 1x S-Video
API Support
DirectX10.1
OpenGL3.3
OpenCL1.1
Shader Model4.1
Theoretical Performance
Pixel Rate13.6 GP/s
Texture Rate34 GT/s
FP32 (Single)1,360 GFLOPS
FP64 (Double)272 GFLOPS
External
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