GeForce 845M and Radeon HD 8770M - video card comparison
GeForce 845M
Radeon HD 8770M
Architecture
Maxwell (2014−2018)
GCN (2011−2017)
GPU code name
GM108
Mars
Market segment
Laptop
Laptop
Release date
March 2014
November 2012
Interface
PCIe 3.0 x8
PCIe 3.0 x8
Boost clock speed
1150 MHz
825 MHz
Core clock speed
1071 MHz
775 MHz
Floating-point performance
883.7 gflops
633.6 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,870 million
950 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
45 Watt
-
Texture fill rate
37.63
19.80
Memory type
DDR3, GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
64/128 Bit
128 Bit
Memory clock speed
2000 - 5000 MHz
4500 MHz
Memory bandwidth
40.1 GB/s
72 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
DirectX
12 (11_0)
12 (11_1)
CUDA
+
-
OpenCL
1.2
1.2
OpenGL
4.6
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
1.2.131
Optimus
+
-