Radeon HD 4870 and Radeon HD 6770M - video card comparison
Passmark - benchmark score Radeon HD 4870 vs Radeon HD 6770M
Radeon HD 4870
1411
Radeon HD 6770M
993
Radeon HD 4870
Radeon HD 6770M
Architecture
TeraScale (2005−2013)
Terascale 2 (2009−2015)
GPU code name
RV770
Whistler-XT
Market segment
Desktop
Laptop
Release date
June 2008
January 2011
Interface
PCIe 2.0 x16
MXM-A (3.0)
Supplementary power connectors
2x 6-pin
-
Core clock speed
750 MHz
675 / 725 MHz
Floating-point performance
1,200.0 gflops
696.0 gflops
Manufacturing process technology
55 nm
40 nm
Number of transistors
956 million
716 million
Pipelines / CUDA cores
800
480
Power consumption (TDP)
150 Watt
35 Watt
Texture fill rate
30.00
17.40
Memory type
GDDR5
GDDR5
Maximum RAM amount
1 GB
1 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
3600 MHz
800 MHz
Memory bandwidth
115.2 GB/s
57.6 GB/s
Shared memory
-
-
Display Connectors
2x DVI, 1x S-Video
No outputs
DirectX
10.1 (10_1)
11.2 (11_0)
OpenCL
1.1
1.2
OpenGL
3.3
4.4
Shader Model
4.1
5.0
Vulkan
N/A
N/A