ATI Radeon X1950 XTX

Reference GPU

Ultra-Threaded SE Radeon X1000 Series Gaming Desktop GDDR4 2006

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At a Glance

Entry Type: Reference GPU
Architecture: Ultra-Threaded SE
Series: Radeon X1000 Series
GPU Die: R580+
Launch Date: 2006-08-23
Launch MSRP: 449
Stream Processors: 48
TMUs: 16
ROPs: 16
Memory: 512 MB GDDR4
Bus Width: 256-bit
TDP/TBP: 150 W
Rec. PSU: 300 W
Interface: PCIe 1.0 x16
Data Confidence: Partial

GPU Specs

Identity
Entry Type	Reference GPU
Official Name	ATI Radeon X1950 XTX
GPU Codename	R580+
Architecture	R580
Launch Date	2006-08-23
Launch MSRP	449
Market Segment Notes	Desktop, Enthusiast
Core Specs
GPU Die	R580+
Process Node	80 nm
Transistor Count	384 million
Die Size	352 mm²
Stream Processors	48
TMUs	16
ROPs	16
Base Clock	650 MHz
Boost Clock	650 MHz
Pixel Fillrate	10.4 GP/s
Texture Fillrate	10.4 GT/s
Memory
Memory Size	512 MB
Memory Type	GDDR4
Memory Bus Width	256-bit
Memory Clock	1000 MHz
Memory Bandwidth	64.0 GB/s
Board and Display
TDP / TBP	150 W
Recommended PSU	300 W
Interface	PCIe 1.0 x16
Display Outputs	2x DVI, 1x S-Video
Slot Width	Dual-slot
Card Length	230 mm
Software
Shader Model	3.0
DirectX Support	DirectX 9.0c
OpenGL Support	OpenGL 2.0

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

Why It Mattered

Last flagship under the ATI brand before AMD completed the acquisition. Introduced GDDR4 and competed credibly with the GeForce 7950 GX2, making it a historically notable endpoint for the ATI identity.

Known Issues

Known issues pending source review.

Reviews1 review

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

ArticleAnandTech

ATI Radeon X1950 XTX Review

Review of the Radeon X1950 XTX.

SourcesPartial

Sources reviewed: 2026-06-25

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 SpecsSpecification referenceOpen source

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Why It Mattered

Known Issues

ATI Radeon X1950 XTX Review

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Independent reference sources