Radeon HD 7970M Crossfire and GeForce GTX 680M SLI - video card comparison
Radeon HD 7970M Crossfire
GeForce GTX 680M SLI
Architecture
GCN (2011−2017)
Kepler (2012−2018)
GPU code name
Wimbledon XT
N13E-GTX
Market segment
Laptop
Laptop
Release date
May 2012
June 2012
SLI options
-
+
Core clock speed
850 MHz
720 MHz
Manufacturing process technology
28 nm
28 nm
Pipelines / CUDA cores
2560
2688
Power consumption (TDP)
200 Watt
-
Memory type
GDDR5
GDDR5
Maximum RAM amount
-
2x 4 GB
Memory bus width
2x 256 Bit
2x 256 Bit
Memory clock speed
4800 MHz
3600 MHz
Shared memory
-
-
DirectX
11.1
11
CUDA
-
+
Optimus
-
+