GeForce GTX 770 and GeForce GT 645M - video card comparison
Passmark - benchmark score GeForce GTX 770 vs GeForce GT 645M
GeForce GTX 770
6099
GeForce GT 645M
957
GeForce GTX 770
GeForce GT 645M
Architecture
Kepler (2012−2018)
Kepler (2012−2018)
GPU code name
GK104
N13P-GS
Market segment
Desktop
Laptop
Release date
May 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
Minimum recommended system power
600 Watt
-
Supplementary power connectors
One 8-pin and one 6-pin
-
Boost clock speed
1085 MHz
-
Core clock speed
1046 MHz
Up to 710 MHz
CUDA cores
1536
384
Floating-point performance
3,333 gflops
544.5 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
3,540 million
1,270 million
Pipelines / CUDA cores
1536
384
Power consumption (TDP)
230 Watt
32 Watt
Maximum GPU temperature
98 °C
-
Texture fill rate
134 billion/sec
22.7 billion/sec
Memory type
GDDR5
DDR3\GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
128bit
Memory clock speed
7012 MHz
1800 MHz
Memory bandwidth
224.3 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
4.3
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
-
+
PhysX
+
-