Radeon HD 6870 X2

Key Metrics

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Identity
Entry Type	Reference GPU
Official Name	AMD Radeon HD 6870 X2
Architecture	TeraScale 2
Launch Date	2011-07-08
Core Specs
GPU Die	Barts
Chip Variant / Package	HFCBGA-1737
Process Node	TSMC 40 nm
Transistor Count	1.7 billion
Die Size	255 mm²
Stream Processors	1120
TMUs	56
ROPs	32
Base Clock	900 MHz
Boost Clock	900 MHz
Pixel Fillrate	28.8 GP/s
Texture Fillrate	50.4 GT/s
FP32 Throughput	2.02 TFLOPS
Memory
Memory Size	1 GB
Memory Type	GDDR5
Memory Bus Width	256-bit
Memory Clock	1,050 MHz
Memory Bandwidth	134.4 GB/s
L2 Cache	0.5 MB
L1 Cache	8 KB
Board and Display
TDP / TBP	300 W
Recommended PSU	700 W
Interface	PCIe 2.0 x16
Display Outputs	2x DVI, 1x HDMI 1.3a, 2x mini-DisplayPort 1.1
Slot Width	Dual-slot
Card Length	304 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.

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