ATI Radeon X1950 XTX

Ultra-Threaded SE Radeon X1000 Series Gaming Desktop GDDR4 2006

Key Metrics

Architecture: Ultra-Threaded SE
Launch Date: 2006-10-17
Stream Processors: 48
Memory: 512 MB GDDR4
Memory Bandwidth: 64.0 GB/s
TDP/TBP: 125 W
Interface: PCIe 1.0 x16

Save this GPU, then open another GPU page to compare them side by side.

GPU Specs

Identity
Entry Type	Reference GPU
Official Name	ATI Radeon X1950 XTX
GPU Codename	R580+
Architecture	R580
Launch Date	2006-10-17
Launch MSRP	449
Market Segment Notes	Desktop, Enthusiast
Core Specs
GPU Die	R580+
Process Node	90 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	125 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

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

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.

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.

Sources

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

Found an incorrect spec, missing source, or variant issue?

Submit a correction

Why It Mattered

ATI Radeon X1950 XTX Review

Mobility Radeon X1300

Mobility Radeon X1350

Mobility Radeon X1400

Mobility Radeon X1450

Independent reference sources