Radeon HD 6770M and GeForce GT 555M - video card comparison
Passmark - benchmark score Radeon HD 6770M vs GeForce GT 555M
Radeon HD 6770M
993
GeForce GT 555M
674
Radeon HD 6770M
GeForce GT 555M
Architecture
Terascale 2 (2009−2015)
Fermi (2010−2014)
GPU code name
Whistler-XT
N12E-GE-B
Market segment
Laptop
Laptop
Release date
January 2011
January 2011
Bus support
-
PCI Express 2.0
Interface
MXM-A (3.0)
PCIe 2.0 x16
SLI options
-
+
Boost clock speed
-
753 MHz
Core clock speed
675 / 725 MHz
Up to 753 MHz
CUDA cores
-
Up to 144
Floating-point performance
696.0 gflops
388.8 gflops
Manufacturing process technology
40 nm
40 nm
Number of transistors
716 million
1,170 million
Pipelines / CUDA cores
480
144
Power consumption (TDP)
35 Watt
35 Watt
Texture fill rate
17.40
Up to 16.2 billion/sec
Memory type
GDDR5
DDR3\DDR5
Maximum RAM amount
1 GB
3 GB
Memory bus width
128 Bit
Up to 192 bit/128 Bit
Memory clock speed
800 MHz
Up to 1569 MHz
Memory bandwidth
57.6 GB/s
Up to 50.2 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
11.2 (11_0)
12 API
CUDA
-
+
OpenCL
1.2
1.1
OpenGL
4.4
4.5
Shader Model
5.0
5.1
Vulkan
N/A
N/A
3D Blu-Ray
-
+
3D Gaming
-
+
Optimus
-
+