GeForce GTX TITAN and GeForce GT 640M - video card comparison
Passmark - benchmark score GeForce GTX TITAN vs GeForce GT 640M
GeForce GTX TITAN
8435
GeForce GT 640M
946
GeForce GTX TITAN
GeForce GT 640M
Architecture
Kepler (2012−2018)
Kepler (2012−2018)
GPU code name
GK110
N13P-GS
Market segment
Desktop
Laptop
Release date
February 2013
March 2012
Bus support
PCI Express 3.0
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
One 8-pin and one 6-pin
-
Boost clock speed
876 MHz
645 MHz
Core clock speed
837 MHz
Up to 625 MHz
CUDA cores
2688
384
Floating-point performance
4,709 gflops
480.0 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
7,080 million
1,270 million
Pipelines / CUDA cores
2688
384
Power consumption (TDP)
250 Watt
32 Watt
Texture fill rate
187.5 billion/sec
Up to 20.0 billion/sec
Memory type
GDDR5
DDR3\GDDR5
Maximum RAM amount
6 GB
2 GB
Memory bus width
384-bit GDDR5
128bit
Memory clock speed
6.0 GB/s
1800 - 4000 MHz
Memory bandwidth
288.4 GB/s
Up to 64.0 GB/s
Shared memory
-
-
Display Connectors
One Dual Link DVI-I, One Dual Link DVI-D, One HDMI, One DisplayPort
No outputs
Multi monitor support
4 displays
-
HDMI
+
+
HDCP
+
+
Maximum VGA resolution
2048x1536
Up to 2048x1536
Audio input for HDMI
Internal
-
DirectX
12 (11_0)
12 API
CUDA
+
+
OpenCL
1.2
1.1
OpenGL
4.4
4.5
Shader Model
5.1
5.1
Vulkan
1.1.126
1.1.126
3D Blu-Ray
-
+
3D Gaming
+
-
3D Vision
+
-
3D Vision Live
+
-
Blu Ray 3D
+
-
Optimus
-
+