GeForce GTX 650 vs GeForce GT 645

GeForce GTX 650
GeForce GT 645
384 Shaders
1GB GDDR5
1058MHz
288 Shaders
1GB GDDR5
776MHz
FP32
0.81 TFLOPS
FP32
0.89 TFLOPS
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Form Factor
PCIe Card
1.5-Slots
Form Factor
PCIe Card
2.0-Slots
TDP
64W
TDP
140W
Power Connectors
1x 6-Pin
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GB5 OpenCL - N/A
0%
GB5 OpenCL - N/A
0%
GB5 CUDA - N/A
0%
GB5 CUDA - N/A
0%
GB5 Metal - N/A
0%
GB5 Metal - N/A
0%
GB5 Vulkan - N/A
0%
GB5 Vulkan - N/A
0%
OCT 2020.1 - N/A
0%
OCT 2020.1 - N/A
0%
OCT Metal - N/A
0%
OCT Metal - N/A
0%
Manufacturer
NVIDIA
Manufacturer
NVIDIA
Chip Designer
NVIDIA
Chip Designer
NVIDIA
Architecture
Kepler
Architecture
Fermi
Family
GeForce 600
Family
GeForce 600
Codename
NVE7
GK107
Variant
GK107-450-A2
Codename
NVCE
GF114
Variant
GF114-400-A1
Market Segment
Desktop
Market Segment
Desktop
Release Date
9/13/2012
Release Date
4/24/2012
Foundry
TSMC
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Foundry
TSMC
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Fabrication Node
28nm
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Fabrication Node
40nm
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Die Size
118 mm²
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Die Size
332 mm²
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Transistor Count
1.3 Billion
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Transistor Count
2 Billion
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Transistor Density
10.76M/mm²
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Transistor Density
5.87M/mm²
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Form
PCIe Card
Form
PCIe Card
Shading Units
384 Shaders
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Shading Units
288 Shaders
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Texture Mapping Units
32 TMUs
Texture Mapping Units
48 TMUs
Render Output Units
16 ROPs
Render Output Units
24 ROPs
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Streaming Multiprocessors
2 SMs
Streaming Multiprocessors
6 SMs
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1058MHz
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1552MHz Shader
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776MHz
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FP32
0.81 TFLOPS
FP32
0.89 TFLOPS
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FP64
0.03 TFLOPS
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FP64
0.07 TFLOPS
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Pixel Fillrate
16.928 GPixel/s
Pixel Fillrate
18.624 GPixel/s
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Texture Fillrate
33.856 GTexel/s
Texture Fillrate
37.248 GTexel/s
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L1
48KB/SM Tex
16KB/SM
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L1
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64KB/SM
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L2
256KB Shared
L2
512KB Shared
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1GB
GDDR5
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1GB
GDDR5
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Bus Width
128Bit
Bus Width
192Bit
Clock
1250MHz
Transfer Rate
5GT/s
Bandwidth
80GB/s
Clock
957MHz
Transfer Rate
3.8GT/s
Bandwidth
91.9GB/s
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TDP
64W
TDP
140W
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1x DVI-I Dual-Link
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1x DVI-D Dual-Link
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1x mini-HDMI 1.4
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2x DVI-I Dual-Link
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1x mini-HDMI 1.3
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Max Resolution
4096x2304
Max Resolution
2560x1600
Max Resolution Refresh Rate
30Hz
Max Resolution Refresh Rate
60Hz
Variable Refresh Rate
G-Sync
FreeSync
-
Variable Refresh Rate
-
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Display Stream Compression (DSC)
Not Supported
Display Stream Compression (DSC)
Not Supported
Multi Monitor Support
2
Multi Monitor Support
2
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Model
NVENC 1
No Encoders
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Codec
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AVC (H.264)
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Model
NVDEC 1
No Decoders
Codec
MPEG-1
MPEG-2
MPEG-4
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VC-1
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AVC (H.264)
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Direct X
12
Direct 3D
11_0
Direct X
12
Direct 3D
11_0
OpenGL
4.6
OpenCL
3.0
Vulkan
1.2
OpenGL
4.6
OpenCL
1.1
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Shader Model
6.5
CUDA
3.0
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PureVideo HD
VP5
VDPAU
Feature Set D
Shader Model
5.1
CUDA
2.1
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PureVideo HD
VP4
VDPAU
Feature Set C
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1x Fan
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1x Fan
Power Connectors
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1x 6-Pin
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Slots Required
1.5
PCIe Version
3.0
PCIe Lanes
16
Slots Required
2.0
PCIe Version
2.0
PCIe Lanes
16
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Height
111 mm (4.37 in)
Width
145 mm (5.71 in)
Depth
30 mm (1.18 in)
Height
111 mm (4.37 in)
Width
210 mm (8.27 in)
Depth
38 mm (1.5 in)
Change Results