Radeon HD 7970M and GeForce GT 555M - video card comparison
Passmark - benchmark score Radeon HD 7970M vs GeForce GT 555M
Radeon HD 7970M
3635
GeForce GT 555M
674
Radeon HD 7970M
GeForce GT 555M
Architecture
GCN (2011−2017)
Fermi (2010−2014)
GPU code name
Wimbledon XT
N12E-GE-B
Market segment
Laptop
Laptop
Release date
May 2012
January 2011
Bus support
-
PCI Express 2.0
Interface
MXM-B (3.0)
PCIe 2.0 x16
Supplementary power connectors
None
-
SLI options
-
+
Boost clock speed
-
753 MHz
Core clock speed
850 MHz
Up to 753 MHz
CUDA cores
-
Up to 144
Floating-point performance
2,176 gflops
388.8 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
2,800 million
1,170 million
Pipelines / CUDA cores
1280
144
Power consumption (TDP)
100 Watt
35 Watt
Texture fill rate
68.00
Up to 16.2 billion/sec
Memory type
GDDR5
DDR3\DDR5
Maximum RAM amount
2 GB
3 GB
Memory bus width
256 Bit
Up to 192 bit/128 Bit
Memory clock speed
4800 MHz
Up to 1569 MHz
Memory bandwidth
153.6 GB/s
Up to 50.2 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_1)
12 API
CUDA
-
+
OpenCL
1.2
1.1
OpenGL
4.6
4.5
Shader Model
5.1
5.1
Vulkan
1.2.131
N/A
3D Blu-Ray
-
+
3D Gaming
-
+
Optimus
-
+