AMD Radeon HD 6990M Crossfire vs AMD Radeon HD 6390

Comparative analysis of AMD Radeon HD 6990M Crossfire and AMD Radeon HD 6390 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 6390

Differences

Reasons to consider the AMD Radeon HD 6990M Crossfire

Around 30% higher core clock speed: 715 MHz vs 550 MHz
7x more pipelines: 2240 vs 320
4x more maximum memory size: 2x2 GB vs 1 GB

Core clock speed	715 MHz vs 550 MHz
Pipelines	2240 vs 320
Maximum memory size	2x2 GB vs 1 GB

Reasons to consider the AMD Radeon HD 6390

Around 11% higher memory clock speed: 1000 MHz vs 900 MHz

Memory clock speed	1000 MHz vs 900 MHz

Compare specifications (specs)

	AMD Radeon HD 6990M Crossfire	AMD Radeon HD 6390
Essentials
Architecture	Terascale 2	TeraScale 2
Code name	Blackcomb XTX	Redwood
Launch date	12 July 2011	4 July 2011
Place in performance rating	not rated	not rated
Type	Laptop	Desktop
Technical info
Core clock speed	715 MHz	550 MHz
Manufacturing process technology	40 nm	40 nm
Pipelines	2240	320
Transistor count	2x1700 Million	627 million
Floating-point performance		352.0 gflops
Texture fill rate		8.8 GTexel / s
Thermal Design Power (TDP)		39 Watt
Compatibility, dimensions and requirements
Laptop size	large
Interface		PCIe 2.0 x16
Length		165 mm
Supplementary power connectors		None
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	1000 MHz
Memory type	GDDR5	DDR2
Shared memory	0
Memory bandwidth		16 GB / s
Video outputs and ports
Display Connectors		1x DVI, 1x HDMI, 1x VGA