Radeon HD 6990M Crossfire and GeForce GTX 485M SLI - video card comparison
Radeon HD 6990M Crossfire
GeForce GTX 485M SLI
Architecture
Terascale 2 (2009−2015)
Fermi (2010−2014)
GPU code name
Blackcomb XTX
N11E-GTX-A1
Market segment
Laptop
Laptop
Release date
July 2011
January 2011
Core clock speed
715 MHz
575 MHz
Manufacturing process technology
40 nm
40 nm
Number of transistors
2x1700 Million
-
Pipelines / CUDA cores
2240
768
Power consumption (TDP)
-
100 Watt
Memory type
GDDR5
GDDR5
Maximum RAM amount
2x2 GB
2x2 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
900 MHz
1500 MHz
Shared memory
-
-
DirectX
11
11