Radeon HD 4870

Reference GPU

TeraScale Radeon HD 4000 Series Gaming Desktop GDDR5 2008

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At a Glance

Entry Type: Reference GPU
Architecture: TeraScale
Series: Radeon HD 4000 Series
GPU Die: RV770
Launch Date: 2008-06-25
Stream Processors: 800
TMUs: 40
ROPs: 16
Memory: 512 MB GDDR5
Bus Width: 256-bit
TDP/TBP: 150 W
Rec. PSU: 450 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 4870
Architecture	TeraScale
Launch Date	2008-06-25
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	900 MHz
Memory Bandwidth	115.2 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	2x DVI, 1x S-Video
Slot Width	Dual-slot
Card Length	241 mm
Software
Shader Model	4.1
DirectX Support	DirectX 10.1
OpenGL Support	OpenGL 3.3
OpenCL Support	OpenCL 1.1

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.

Reviews1 review

Board-partner, reference-card, article, and video reviews that cover this GPU.

ArticleAnandTech

ATI Radeon HD 4870 Review

Review of the Radeon HD 4870.

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

TechPowerUp GPU SpecsOpen source

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