GeForce GTX 670M and Mobility Radeon HD 3870 X2 - video card comparison
GeForce GTX 670M
Mobility Radeon HD 3870 X2
Architecture
Fermi (2010−2014)
RV6xx (2007−2010)
GPU code name
N13E-GS1-LP
M88-XT CF
Market segment
Laptop
Laptop
Release date
March 2012
September 2008
Bus support
PCI Express 2.0
-
Interface
MXM-B (3.0)
PCIe 2.0 x16
SLI options
+
-
Core clock speed
598 MHz
660 MHz
CUDA cores
336
-
Floating-point performance
803.7 gflops
2x 422.4 gflops
Manufacturing process technology
40 nm
55 nm
Number of transistors
1,950 million
666 million
Pipelines / CUDA cores
336
640
Power consumption (TDP)
75 Watt
110 Watt
Texture fill rate
33.5 billion/sec
10.56
Memory type
GDDR5
GDDR3
Maximum RAM amount
3 GB
512 MB
Memory bus width
192bit
256 Bit
Memory clock speed
1500 MHz
850 MHz
Memory bandwidth
72.0 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
N/A
N/A
Optimus
+
-