Radeon HD 7770M and Radeon HD 6770M - video card comparison
Radeon HD 7770M
Radeon HD 6770M
Architecture
GCN (2011−2017)
Terascale 2 (2009−2015)
GPU code name
Chelsea XT
Whistler-XT
Market segment
Laptop
Laptop
Release date
April 2012
January 2011
Interface
PCIe 2.0 x16
MXM-A (3.0)
Core clock speed
675 MHz
675 / 725 MHz
Floating-point performance
691.2 gflops
696.0 gflops
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,500 million
716 million
Pipelines / CUDA cores
512
480
Power consumption (TDP)
32 Watt
35 Watt
Texture fill rate
21.60
17.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
1 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
4000 MHz
800 MHz
Memory bandwidth
64 GB/s
57.6 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_1)
11.2 (11_0)
OpenCL
1.2
1.2
OpenGL
4.6
4.4
Shader Model
5.1
5.0
Vulkan
1.2.131
N/A