GeForce GT 640M and GeForce GT 335M - video card comparison
Passmark - benchmark score GeForce GT 640M vs GeForce GT 335M
GeForce GT 640M
943
GeForce GT 335M
396
GeForce GT 640M
GeForce GT 335M
Architecture
Kepler (2012−2018)
GT200 (2010)
GPU code name
N13P-GS
N11P-GS1
Market segment
Laptop
Laptop
Release date
March 2012
January 2010
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
-
+
Boost clock speed
645 MHz
-
Core clock speed
Up to 625 MHz
450 MHz
CUDA cores
384
72
Floating-point performance
480.0 gflops
155.52 gflops
Gigaflops
-
233
Manufacturing process technology
28 nm
40 nm
Number of transistors
1,270 million
727 million
Pipelines / CUDA cores
384
72
Power consumption (TDP)
32 Watt
28 Watt
Texture fill rate
Up to 20.0 billion/sec
10.80
Memory type
DDR3\GDDR5
DDR3, GDDR3
Maximum RAM amount
2 GB
1 GB
Memory bus width
128bit
128 Bit
Memory clock speed
1800 - 4000 MHz
Up to 1066 (DDR3), Up to 800 (GDDR3) MHz
Memory bandwidth
Up to 64.0 GB/s
25.6 GB/s
Shared memory
-
-
Display Connectors
No outputs
Single Link DVIVGADisplayPortHDMIDual Link DVI
Multi monitor support
-
+
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