AMD Radeon HD 6990M Crossfire vs AMD Radeon HD 6990M Rebrand

Comparative analysis of AMD Radeon HD 6990M Crossfire and AMD Radeon HD 6990M Rebrand videocards for all known characteristics in the following categories: Essentials, Technical info, Compatibility, dimensions and requirements, API support, Memory, Video outputs and ports.

AMD Radeon HD 6990M Crossfire

AMD Radeon HD 6990M Rebrand

Differences

Reasons to consider the AMD Radeon HD 6990M Crossfire

2.8x more pipelines: 2240 vs 800
4x more maximum memory size: 2x2 GB vs 1 GB

Pipelines	2240 vs 800
Maximum memory size	2x2 GB vs 1 GB

Reasons to consider the AMD Radeon HD 6990M Rebrand

Around 12% higher core clock speed: 800 MHz vs 715 MHz
4.9x more memory clock speed: 4400 MHz vs 900 MHz

Core clock speed	800 MHz vs 715 MHz
Memory clock speed	4400 MHz vs 900 MHz

Compare specifications (specs)

	AMD Radeon HD 6990M Crossfire	AMD Radeon HD 6990M Rebrand
Essentials
Architecture	Terascale 2	TeraScale 2
Code name	Blackcomb XTX	Broadway
Launch date	12 July 2011	12 July 2011
Place in performance rating	not rated	not rated
Type	Laptop	Desktop
Technical info
Core clock speed	715 MHz	800 MHz
Manufacturing process technology	40 nm	40 nm
Pipelines	2240	800
Transistor count	2x1700 Million	1,040 million
Floating-point performance		1,280.0 gflops
Texture fill rate		32.0 GTexel / s
Thermal Design Power (TDP)		100 Watt
Compatibility, dimensions and requirements
Laptop size	large
Interface		MXM-B (3.0)
API support
DirectX	11	11.2 (11_0)
OpenGL		4.4
Memory
Maximum RAM amount	2x2 GB	1 GB
Memory bus width	256 Bit	128 Bit
Memory clock speed	900 MHz	4400 MHz
Memory type	GDDR5	GDDR5
Shared memory	0
Memory bandwidth		70.4 GB / s
Video outputs and ports
Display Connectors		No outputs