GeForce GT 650M SLI and Radeon HD 3870 - video card comparison
GeForce GT 650M SLI
Radeon HD 3870
Architecture
Kepler (2012−2018)
TeraScale (2005−2013)
GPU code name
N13E-GE
RV670
Market segment
Laptop
Desktop
Release date
March 2012
November 2007
Interface
-
PCIe 2.0 x16
Supplementary power connectors
-
1x 6-pin
Boost clock speed
835 MHz
-
Core clock speed
790 MHz
777 MHz
Floating-point performance
-
497.3 gflops
Manufacturing process technology
28 nm
55 nm
Number of transistors
-
666 million
Pipelines / CUDA cores
768
320
Power consumption (TDP)
-
106 Watt
Texture fill rate
-
12.43
Memory type
GDDR5
GDDR4
Maximum RAM amount
2x2 GB
512 MB
Memory bus width
2x 128 Bit
256 Bit
Memory clock speed
4000 MHz
2252 MHz
Memory bandwidth
-
72.06 GB/s
Shared memory
-
-
Display Connectors
-
2x DVI, 1x S-Video
DirectX
11
10.1 (10_1)
CUDA
+
-
OpenCL
-
N/A
OpenGL
-
3.3
Shader Model
-
4.1
Vulkan
-
N/A
Optimus
+
-