GeForce 845M and Radeon HD 7640G + HD 7670M Dual Graphics - video card comparison
GeForce 845M
Radeon HD 7640G + HD 7670M Dual Graphics
Architecture
Maxwell (2014−2018)
Terascale 3 (2010−2013)
GPU code name
GM108
-
Market segment
Laptop
Laptop
Release date
March 2014
May 2012
Interface
PCIe 3.0 x8
-
Boost clock speed
1150 MHz
-
Core clock speed
1071 MHz
655 / 600 MHz
Floating-point performance
883.7 gflops
-
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,870 million
-
Pipelines / CUDA cores
384
736
Power consumption (TDP)
45 Watt
-
Texture fill rate
37.63
-
Memory type
DDR3, GDDR5
-
Maximum RAM amount
2 GB
-
Memory bus width
64/128 Bit
128 Bit
Memory clock speed
2000 - 5000 MHz
1800 MHz
Memory bandwidth
40.1 GB/s
-
Shared memory
-
+
Display Connectors
No outputs
-
DirectX
12 (11_0)
11
CUDA
+
-
OpenCL
1.2
-
OpenGL
4.6
-
Shader Model
5.1
-
Vulkan
1.1.126
-
Optimus
+
-