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

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

AMD Radeon HD 6990M

AMD Radeon HD 6990M Crossfire

Differences

Reasons to consider the AMD Radeon HD 6990M

4x more memory clock speed: 3600 MHz vs 900 MHz

Memory clock speed	3600 MHz vs 900 MHz

Reasons to consider the AMD Radeon HD 6990M Crossfire

2x more pipelines: 2240 vs 1120
2x more maximum memory size: 2x2 GB vs 2 GB

Pipelines	2240 vs 1120
Maximum memory size	2x2 GB vs 2 GB

Compare specifications (specs)

	AMD Radeon HD 6990M	AMD Radeon HD 6990M Crossfire
Essentials
Architecture	TeraScale 2	Terascale 2
Code name	Blackcomb	Blackcomb XTX
Launch date	12 July 2011	12 July 2011
Place in performance rating	not rated	not rated
Type	Laptop	Laptop
Technical info
Core clock speed	715 MHz	715 MHz
Floating-point performance	1,601.6 gflops
Manufacturing process technology	40 nm	40 nm
Pipelines	1120	2240
Texture fill rate	40.0 GTexel / s
Thermal Design Power (TDP)	100 Watt
Transistor count	1,700 million	2x1700 Million
Video outputs and ports
Display Connectors	No outputs
Compatibility, dimensions and requirements
Interface	MXM-B (3.0)
Laptop size	large	large
Supplementary power connectors	None
API support
DirectX	11.2 (11_0)	11
OpenGL	4.4
Memory
Maximum RAM amount	2 GB	2x2 GB
Memory bandwidth	115.2 GB / s
Memory bus width	256 Bit	256 Bit
Memory clock speed	3600 MHz	900 MHz
Memory type	GDDR5	GDDR5
Shared memory	0	0