GeForce GTX 770M SLI and Radeon HD 6990M Crossfire - video card comparison
GeForce GTX 770M SLI
Radeon HD 6990M Crossfire
Architecture
Kepler (2012−2018)
Terascale 2 (2009−2015)
GPU code name
-
Blackcomb XTX
Market segment
Laptop
Laptop
Release date
May 2013
July 2011
SLI options
+
-
Core clock speed
811 MHz
715 MHz
Manufacturing process technology
28 nm
40 nm
Number of transistors
2x 2540 Million
2x1700 Million
Pipelines / CUDA cores
1920
2240
Power consumption (TDP)
150 Watt
-
Memory type
GDDR5
GDDR5
Maximum RAM amount
2x 3 GB
2x2 GB
Memory bus width
2x 192 Bit
256 Bit
Memory clock speed
4000 MHz
900 MHz
Shared memory
-
-
DirectX
11
11
CUDA
+
-
Optimus
+
-