GeForce GT 640M and GeForce GTS 260M - video card comparison
GeForce GT 640M
GeForce GTS 260M
Architecture
Kepler (2012−2018)
GT2xx (2009−2012)
GPU code name
N13P-GS
N10E-GS
Market segment
Laptop
Laptop
Release date
March 2012
June 2009
Bus support
PCI Express 2.0, PCI Express 3.0
PCI-E 2.0
Interface
PCIe 3.0 x16
PCIe 2.0 x16
SLI options
-
+
MXM Type
-
MXM 3.0 Type-B
Boost clock speed
645 MHz
-
Core clock speed
Up to 625 MHz
550 MHz
CUDA cores
384
96
Floating-point performance
480.0 gflops
264 gflops
Gigaflops
-
396
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,270 million
727 million
Pipelines / CUDA cores
384
96
Power consumption (TDP)
32 Watt
38 Watt
Texture fill rate
Up to 20.0 billion/sec
17.60
Memory type
DDR3\GDDR5
GDDR3, GDDR5
Maximum RAM amount
2 GB
1 GB
Memory bus width
128bit
128 Bit
Memory clock speed
1800 - 4000 MHz
Up to 2000 MHz
Memory bandwidth
Up to 64.0 GB/s
57.6 GB/s
Shared memory
-
-
Display Connectors
No outputs
HDMIVGADual Link DVIDisplayPortSingle Link DVILVDS
HDMI
+
-
HDCP
+
-
Maximum VGA resolution
Up to 2048x1536
2048x1536
DirectX
12 API
11.1 (10_1)
CUDA
+
+
OpenCL
1.1
1.1
OpenGL
4.5
2.1
Shader Model
5.1
4.1
Vulkan
1.1.126
N/A
3D Blu-Ray
+
-
Optimus
+
-
Power management
-
8.0