Radeon HD 6990

TeraScale 3 Radeon HD 6000 Series Gaming Desktop GDDR5 2011

Key Metrics

Architecture: TeraScale 3
Launch Date: 2011-03-08
Stream Processors: 1,536
Memory: 2 GB GDDR5
Memory Bandwidth: 160 GB/s
TDP/TBP: 375 W
Interface: PCIe 2.0 x16

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GPU Specs

What do these fields mean?

Identity
Entry Type	Reference GPU
Official Name	AMD Radeon HD 6990
Architecture	TeraScale 3
Launch Date	2011-03-08
Core Specs
GPU Die	Antilles
Process Node	TSMC 40 nm
Transistor Count	2.64 billion
Die Size	389 mm²
Stream Processors	1536
TMUs	96
ROPs	32
Base Clock	830 MHz
Boost Clock	830 MHz
Pixel Fillrate	26.56 GP/s
Texture Fillrate	79.68 GT/s
FP32 Throughput	2.55 TFLOPS
FP64 Throughput	0.64 TFLOPS
Memory
Memory Size	2 GB
Memory Type	GDDR5
Memory Bus Width	256-bit
Memory Clock	1,250 MHz
Memory Bandwidth	160 GB/s
L2 Cache	0.5 MB
L1 Cache	8 KB
Board and Display
TDP / TBP	375 W
Recommended PSU	750 W
Interface	PCIe 2.0 x16
Display Outputs	1x DVI, 4x mini-DisplayPort 1.2
Slot Width	Dual-slot
Card Length	310 mm
Software
Shader Model	5.0
DirectX Support	DirectX 11.0
OpenGL Support	OpenGL 4.4
OpenCL Support	OpenCL 1.2

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

Sources

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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