Radeon HD 6770M and GeForce GTX 745 OEM - video card comparison
Radeon HD 6770M
GeForce GTX 745 OEM
Architecture
Terascale 2 (2009−2015)
Maxwell (2014−2018)
GPU code name
Whistler-XT
GM107
Market segment
Laptop
Desktop
Release date
January 2011
February 2014
Interface
MXM-A (3.0)
PCIe 3.0 x16
Supplementary power connectors
-
None
Core clock speed
675 / 725 MHz
1033 MHz
Floating-point performance
696.0 gflops
793.3 gflops
Manufacturing process technology
40 nm
28 nm
Number of transistors
716 million
1,870 million
Pipelines / CUDA cores
480
384
Power consumption (TDP)
35 Watt
55 Watt
Texture fill rate
17.40
24.79
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
4 GB
Memory bus width
128 Bit
128 Bit
Memory clock speed
800 MHz
1800 MHz
Memory bandwidth
57.6 GB/s
28.8 GB/s
Shared memory
-
-
Display Connectors
No outputs
1x DVI, 1x HDMI, 1x VGA
HDMI
-
+
DirectX
11.2 (11_0)
12 (11_0)
CUDA
-
5.0
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
N/A
1.1.126