Mobility Radeon HD 4870
General
ManufacturerATI
SeriesM9x(Mobility HD 4800)
GPU NameM98
ArchitectureTeraScale
GenerationM9x(Mobility HD 4800)
Release DateJan 2009
Bus InterfacePCIe 2.0 x16
Process & Die
FoundryTSMC
Process Size55 nm
Transistors956 M
Transistor Density3,700 K/mm²
Die Size256 mm²
Chip PackageHFCBGA-1492
Clock Speeds
Base Clock550 MHz
Boost Clock550 MHz
Memory
VRAM0.5 GB
Memory TypeGDDR3
Memory Clock888 MHz
Memory Bus256-bit
Bandwidth56.83 GB/s
Processing Units
Shading Units800
TMUs40
ROPs16
SMs0
Tensor Cores0
RT Cores0
Cache
L1 Cache16 KB
L2 Cache0.25 MB
Power & Thermals
Power ConnectorsNone
Dimensions
Outputs
API Support
DirectX10.1
OpenGL3.3
OpenCL1.1
Shader Model4.1
Theoretical Performance
Pixel Rate8.8 GP/s
Texture Rate22 GT/s
FP32 (Single)880 GFLOPS
FP64 (Double)176 GFLOPS
External
TechPowerUpView →