Radeon HD 3870 Mac Edition

Reference GPU

TeraScale Radeon HD 3000 / 2000 Series Gaming Desktop GDDR4 2008

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At a Glance

Entry Type: Reference GPU
Architecture: TeraScale
Series: Radeon HD 3000 / 2000 Series
GPU Die: RV670
Launch Date: 2008-06-12
Stream Processors: 320
TMUs: 16
ROPs: 16
Memory: 512 MB GDDR4
Bus Width: 256-bit
TDP/TBP: 106 W
Rec. PSU: 300 W
Interface: PCIe 2.0 x16
Data Confidence: Partial

GPU Specs

What do these fields mean?Partial

Identity
Entry Type	Reference GPU
Official Name	ATI Radeon HD 3870 Mac Edition
Architecture	TeraScale
Launch Date	2008-06-12
Core Specs
GPU Die	RV670
Chip Variant / Package	FCBGA-1281
Process Node	TSMC 55 nm
Transistor Count	0.67 billion
Die Size	192 mm²
Stream Processors	320
TMUs	16
ROPs	16
Base Clock	777 MHz
Boost Clock	777 MHz
Pixel Fillrate	12.43 GP/s
Texture Fillrate	12.43 GT/s
FP32 Throughput	0.5 TFLOPS
FP64 Throughput	0.1 TFLOPS
Memory
Memory Size	512 MB
Memory Type	GDDR4
Memory Bus Width	256-bit
Memory Clock	1,126 MHz
Memory Bandwidth	72.06 GB/s
L2 Cache	0.25 MB
Board and Display
TDP / TBP	106 W
Recommended PSU	300 W
Interface	PCIe 2.0 x16
Display Outputs	2x DVI, 1x S-Video
Slot Width	Single-slot
Card Length	241 mm
Software
Shader Model	4.1
DirectX Support	DirectX 10.1
OpenGL Support	OpenGL 3.3

This GPU Wiki entry is being expanded and source-checked.

Why It Mattered

This entry is currently a specification record. Historical notes will be added after source review.

Known Issues

Known issues pending source review.

SourcesPartial

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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