GeForce GTX TITAN X and GeForce GT 640 - video card comparison
Passmark - benchmark score GeForce GTX TITAN X vs GeForce GT 640
GeForce GTX TITAN X
13399
GeForce GT 640
1209
GeForce GTX TITAN X
GeForce GT 640
Architecture
Maxwell 2.0 (2015−2019)
Kepler (2012−2018)
GPU code name
GM200
GK107
Market segment
Desktop
Desktop
Release date
March 2015
June 2012
Bus support
PCI Express 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Recommended system power (PSU)
600 Watt
-
Supplementary power connectors
6-pin + 8-pin
None
SLI options
4x
-
Boost clock speed
1075 MHz
-
Core clock speed
1000 MHz
902 MHz
CUDA cores
3072
-
Floating-point performance
6,691 gflops
692.7 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
8,000 million
1,270 million
Pipelines / CUDA cores
3072
384
Power consumption (TDP)
250 Watt
65 Watt
Texture fill rate
192 billion/sec
28.86
Memory type
GDDR5
DDR3
Maximum RAM amount
12 GB
2 GB
Memory bus width
384 Bit
128 Bit
Memory clock speed
7.0 GB/s
1782 MHz
Memory bandwidth
336.5 GB/s
28.51 GB/s
Display Connectors
Dual Link DVI-I, HDMI 2.0, 3x DisplayPort 1.2
1x DVI, 1x HDMI, 1x DisplayPort
Multi monitor support
4 displays
-
HDMI
+
+
HDCP
+
-
Maximum VGA resolution
2048x1536
-
Audio input for HDMI
Internal
-
DirectX
12 (12_1)
12 (11_0)
CUDA
+
3.0
OpenCL
1.2
1.2
OpenGL
4.5
4.6
Shader Model
6.4
5.1
Vulkan
1.1.126
1.1.126
GameStream
+
-
GameWorks
+
-
GeForce ShadowPlay
+
-
GPU Boost
2.0
-