GeForce GT 645 vs GeForce GTX 650 GK106

GeForce GT 645
GeForce GTX 650 GK106
288 Shaders
1GB GDDR5
776MHz
384 Shaders
1GB GDDR5
1058MHz
FP32
0.89 TFLOPS
FP32
0.81 TFLOPS
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-
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Form Factor
PCIe Card
2.0-Slots
Form Factor
PCIe Card
1.5-Slots
TDP
140W
TDP
Unknown
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-
-
-
-
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
Fermi
Architecture
Kepler
Family
GeForce 600
Family
GeForce 600
Codename
NVCE
GF114
Variant
GF114-400-A1
Codename
NVE6
GK106
Variant
GK-106-400-A1
Market Segment
Desktop
Market Segment
Desktop
Release Date
4/24/2012
Release Date
11/27/2013
Foundry
TSMC
-
Foundry
TSMC
-
Fabrication Node
40nm
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Fabrication Node
28nm
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Die Size
332 mm²
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Die Size
221 mm²
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Transistor Count
2 Billion
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Transistor Count
2.5 Billion
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Transistor Density
5.87M/mm²
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Transistor Density
11.49M/mm²
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Form
PCIe Card
Form
PCIe Card
Shading Units
288 Shaders
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Shading Units
384 Shaders
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Texture Mapping Units
48 TMUs
Texture Mapping Units
32 TMUs
Render Output Units
24 ROPs
Render Output Units
16 ROPs
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Streaming Multiprocessors
6 SMs
Streaming Multiprocessors
2 SMs
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1552MHz Shader
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776MHz
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1058MHz
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FP32
0.89 TFLOPS
FP32
0.81 TFLOPS
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FP64
0.07 TFLOPS
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FP64
0.03 TFLOPS
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Pixel Fillrate
18.624 GPixel/s
Pixel Fillrate
16.928 GPixel/s
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Texture Fillrate
37.248 GTexel/s
Texture Fillrate
33.856 GTexel/s
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L1
-
64KB/SM
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-
L1
48KB/SM Tex
16KB/SM
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L2
512KB Shared
L2
512KB Shared
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-
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1GB
GDDR5
-
1GB
GDDR5
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Bus Width
192Bit
Bus Width
128Bit
Clock
957MHz
Transfer Rate
3.8GT/s
Bandwidth
91.9GB/s
Clock
1250MHz
Transfer Rate
5GT/s
Bandwidth
80GB/s
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TDP
140W
TDP
Unknown
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2x DVI-I Dual-Link
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1x mini-HDMI 1.3
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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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Max Resolution
2560x1600
Max Resolution
4096x2304
Max Resolution Refresh Rate
60Hz
Max Resolution Refresh Rate
30Hz
Variable Refresh Rate
-
-
-
Variable Refresh Rate
G-Sync
FreeSync
-
Display Stream Compression (DSC)
Not Supported
Display Stream Compression (DSC)
Not Supported
Multi Monitor Support
2
Multi Monitor Support
2
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No Encoders
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Model
NVENC 1
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Codec
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AVC (H.264)
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No Decoders
Model
NVDEC 1
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Codec
MPEG-1
MPEG-2
MPEG-4
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VC-1
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AVC (H.264)
-
-
-
-
-
Direct X
12
Direct 3D
11_0
Direct X
12
Direct 3D
11_0
OpenGL
4.6
OpenCL
1.1
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-
OpenGL
4.6
OpenCL
3.0
Vulkan
1.2
Shader Model
5.1
CUDA
2.1
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-
PureVideo HD
VP4
VDPAU
Feature Set C
Shader Model
6.5
CUDA
3.0
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PureVideo HD
VP5
VDPAU
Feature Set D
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1x Fan
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1x Fan
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Power Connectors
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1x 6-Pin
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Slots Required
2.0
PCIe Version
2.0
PCIe Lanes
16
Slots Required
1.5
PCIe Version
3.0
PCIe Lanes
16
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Height
111 mm (4.37 in)
Width
210 mm (8.27 in)
Depth
38 mm (1.5 in)
Height
111 mm (4.37 in)
Width
145 mm (5.71 in)
Depth
30 mm (1.18 in)
Change Results