Radeon HD 5850

Reference GPU

TeraScale 2 Radeon HD 5000 Series Gaming Desktop GDDR5 2009

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At a Glance

Entry Type: Reference GPU
Architecture: TeraScale 2
Series: Radeon HD 5000 Series
GPU Die: Cypress
Launch Date: 2009-09-30
Stream Processors: 1,440
TMUs: 72
ROPs: 32
Memory: 1 GB GDDR5
Bus Width: 256-bit
TDP/TBP: 151 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 5850
Architecture	TeraScale 2
Launch Date	2009-09-30
Core Specs
GPU Die	Cypress
Process Node	TSMC 40 nm
Transistor Count	2.15 billion
Die Size	334 mm²
Stream Processors	1440
TMUs	72
ROPs	32
Base Clock	725 MHz
Boost Clock	725 MHz
Pixel Fillrate	23.2 GP/s
Texture Fillrate	52.2 GT/s
FP32 Throughput	2.09 TFLOPS
FP64 Throughput	0.42 TFLOPS
Memory
Memory Size	1 GB
Memory Type	GDDR5
Memory Bus Width	256-bit
Memory Clock	1,000 MHz
Memory Bandwidth	128 GB/s
L2 Cache	0.5 MB
L1 Cache	8 KB
Board and Display
TDP / TBP	151 W
Recommended PSU	450 W
Interface	PCIe 2.0 x16
Display Outputs	2x DVI, 1x HDMI 1.3a, 1x DisplayPort 1.1
Slot Width	Dual-slot
Card Length	241 mm
Software
Shader Model	5.0
DirectX Support	DirectX 11.0
OpenGL Support	OpenGL 4.4
OpenCL Support	OpenCL 1.2

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 5850 Review

Review coverage of Radeon HD 5800 series cards.

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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