Radeon HD 6770M and Radeon HD 8670M - video card comparison
Passmark - benchmark score Radeon HD 6770M vs Radeon HD 8670M
Radeon HD 6770M
993
Radeon HD 8670M
536
Radeon HD 6770M
Radeon HD 8670M
Architecture
Terascale 2 (2009−2015)
GCN (2011−2017)
GPU code name
Whistler-XT
Sun
Market segment
Laptop
Laptop
Release date
January 2011
November 2012
Interface
MXM-A (3.0)
PCIe 3.0 x8
Boost clock speed
-
825 MHz
Core clock speed
675 / 725 MHz
775 MHz
Floating-point performance
696.0 gflops
633.6 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
716 million
690 million
Pipelines / CUDA cores
480
384
Power consumption (TDP)
35 Watt
-
Texture fill rate
17.40
19.50
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
2 GB
Memory bus width
128 Bit
64 Bit
Memory clock speed
800 MHz
2000 MHz
Memory bandwidth
57.6 GB/s
16 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
11.2 (11_0)
12 (11_1)
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
N/A
1.2.131