GeForce GT 645M and Radeon HD 8670M - video card comparison
Passmark - benchmark score GeForce GT 645M vs Radeon HD 8670M
GeForce GT 645M
957
Radeon HD 8670M
536
GeForce GT 645M
Radeon HD 8670M
Architecture
Kepler (2012−2018)
GCN (2011−2017)
GPU code name
N13P-GS
Sun
Market segment
Laptop
Laptop
Release date
March 2012
November 2012
Bus support
PCI Express 2.0, PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x8
Boost clock speed
-
825 MHz
Core clock speed
Up to 710 MHz
775 MHz
CUDA cores
384
-
Floating-point performance
544.5 gflops
633.6 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
1,270 million
690 million
Pipelines / CUDA cores
384
384
Power consumption (TDP)
32 Watt
-
Texture fill rate
22.7 billion/sec
19.50
Memory type
DDR3\GDDR5
DDR3
Maximum RAM amount
2 GB
2 GB
Memory bus width
128bit
64 Bit
Memory clock speed
1800 MHz
2000 MHz
Memory bandwidth
Up to 64.0 GB/s
16 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
12 (11_1)
CUDA
+
-
OpenCL
1.1
1.2
OpenGL
4.5
4.6
Shader Model
5.1
5.1
Vulkan
1.1.126
1.2.131
3D Blu-Ray
+
-
Optimus
+
-