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Spec Radeon HD 4580 ATI
Overview
Product name ATI Radeon HD 4580
Architecture TeraScale
Generation / family Radeon HD 4000 Series
Launch date 2011-11-20
Market segment Gaming
Board type / entry type Reference GPU
GPU
Process node TSMC 55 nm
Die size 135 mm²
Transistor count 0.38 billion
GPU chip RV635
Stream Processors 120
ROPs 4
TMUs 8
Clocks
Base / Core clock 796 MHz
Boost clock 796 MHz
Memory clock 693 MHz
Memory
Memory size 512 MB
Memory type GDDR3
Memory bus width 128-bit
Memory bandwidth 22.18 GB/s
Bus / Interface
Bus interface PCIe 2.0 x16
AGP / PCI / PCIe distinction PCIe
Power
TDP / TBP / board power 65 W
Recommended PSU 250 W
Slot width Single-slot
Display / Media
Display outputs 2x DVI, 1x S-Video
Features
DirectX support DirectX 10.1
OpenGL support OpenGL 3.3
Shader Model 4.1
Performance / Benchmarks
FP32 throughput 0.19 TFLOPS
Muted cells indicate unavailable, not applicable, or not directly comparable specifications.

DLAA counts as native resolution; DLSS, FSR and XeSS upscaling never do. A ray tracing setting without a readable on or off value is read as on.