Radeon HD 4870 Mac Edition

TeraScale Radeon HD 4000 Series Gaming Desktop GDDR5 2009

Key Metrics

Architecture: TeraScale
Launch Date: 2009-01-06
Stream Processors: 800
Memory: 512 MB GDDR5
Memory Bandwidth: 108.8 GB/s
TDP/TBP: 150 W
Interface: PCIe 2.0 x16

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GPU Specs

What do these fields mean?

Identity
Entry Type	Reference GPU
Official Name	ATI Radeon HD 4870 Mac Edition
Architecture	TeraScale
Launch Date	2009-01-06
Core Specs
GPU Die	RV770
Chip Variant / Package	HFCBGA-1492
Process Node	TSMC 55 nm
Transistor Count	0.96 billion
Die Size	256 mm²
Stream Processors	800
TMUs	40
ROPs	16
Base Clock	750 MHz
Boost Clock	750 MHz
Pixel Fillrate	12 GP/s
Texture Fillrate	30 GT/s
FP32 Throughput	1.2 TFLOPS
FP64 Throughput	0.24 TFLOPS
Memory
Memory Size	512 MB
Memory Type	GDDR5
Memory Bus Width	256-bit
Memory Clock	850 MHz
Memory Bandwidth	108.8 GB/s
L2 Cache	0.25 MB
L1 Cache	16 KB
Board and Display
TDP / TBP	150 W
Recommended PSU	450 W
Interface	PCIe 2.0 x16
Display Outputs	1x DVI, 1x mini-DisplayPort 1.0
Slot Width	Dual-slot
Card Length	250 mm
Software
Shader Model	4.1
DirectX Support	DirectX 10.1
OpenGL Support	OpenGL 3.3
OpenCL Support	OpenCL 1.1

Partial entry. Core specifications may be present, but history, variant notes, known issues, and source review may be incomplete.

Sources

Sources reviewed: 2026-06-23

This entry is still being source-checked.

Data confidence and source status

Partial entry. Core specifications may be present, but history, variant notes, known issues, and source review may be incomplete.

Verified: core specifications and historical notes have been reviewed against listed sources.
Partial: core specifications may be present, but history, variant notes, known issues, and source review may be incomplete.
Imported: spec-only imported entry pending editorial source review.
Needs source review: narrative notes are incomplete until reviewed.

Independent reference sources

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