GeForce GTX 670MX and Mobility Radeon HD 3870 - video card comparison
GeForce GTX 670MX
Mobility Radeon HD 3870
Architecture
Kepler (2012−2018)
RV6xx (2007−2010)
GPU code name
N13E-GR
M88-XT
Market segment
Laptop
Laptop
Release date
October 2012
March 2008
Bus support
PCI Express 2.0
-
Interface
PCIe 3.0 x16
PCIe 2.0 x16
SLI options
+
-
Core clock speed
600 MHz
660 MHz
CUDA cores
960
-
Floating-point performance
1,154 gflops
422.4 gflops
Manufacturing process technology
28 nm
55 nm
Number of transistors
3,540 million
666 million
Pipelines / CUDA cores
960
320
Power consumption (TDP)
75 Watt
55 Watt
Texture fill rate
48.0 billion/sec
10.56
Memory type
GDDR5
GDDR3
Maximum RAM amount
3 GB
512 MB
Memory bus width
192 Bit
256 Bit
Memory clock speed
1400 MHz
850 MHz
Memory bandwidth
67.2 GB/s
54.4 GB/s
Shared memory
-
-
Display Connectors
No outputs
No outputs
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
-
DirectX
12 API
10.1 (10_1)
CUDA
+
-
OpenCL
1.1
N/A
OpenGL
4.5
3.3
Shader Model
5.1
4.1
Vulkan
1.1.126
N/A
Optimus
+
-