GPU Wiki

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Select up to four GPU Wiki entries to compare matching specifications row by row. The comparison uses the site database and keeps generation-specific specs visibly separate.

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Spec Mobility Radeon HD 4870 ATI
Overview
Product name ATI Mobility Radeon HD 4870
Architecture TeraScale
Generation / family Radeon HD 4000 Series
Launch date 2009-01-09
Market segment Mobile
Board type / entry type Laptop GPU
GPU
Process node TSMC 55 nm
Die size 256 mm²
Transistor count 0.96 billion
GPU chip M98
Stream Processors 800
ROPs 16
TMUs 40
Clocks
Base / Core clock 550 MHz
Boost clock 550 MHz
Memory clock 888 MHz
Memory
Memory size 512 MB
Memory type GDDR3
Memory bus width 256-bit
Memory bandwidth 56.83 GB/s
Bus / Interface
Bus interface PCIe 2.0 x16
AGP / PCI / PCIe distinction PCIe
Power
Slot width MXM Module
Features
DirectX support DirectX 10.1
OpenGL support OpenGL 3.3
Shader Model 4.1
Performance / Benchmarks
FP32 throughput 0.88 TFLOPS
Muted cells indicate unavailable, not applicable, or not directly comparable specifications.

Frame rates compare runs of the same game at the same quality preset on one test system. DLAA counts as native resolution, because it applies anti-aliasing at full render resolution rather than upscaling; DLSS and FSR upscaling are never counted as native. Where a capture named ray tracing without a readable on or off value, it is read as on.