GeForce GT 645 vs GeForce GTX 645
GeForce GT 645
GeForce GTX 645
|
288 Shaders
1GB GDDR5
776MHz
|
576 Shaders
1GB GDDR5
889MHz
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|
FP32
0.89 TFLOPS
|
FP32
1.02 TFLOPS
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-
-
|
-
-
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Form Factor
PCIe Card
2.0-Slots
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Form Factor
PCIe Card
1.0-Slots
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TDP
140W
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TDP
64W
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-
-
-
-
-
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-
-
-
-
-
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GB5 OpenCL - N/A
0%
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GB5 OpenCL - N/A
0%
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GB5 CUDA - N/A
0%
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GB5 CUDA - N/A
0%
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GB5 Metal - N/A
0%
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GB5 Metal - N/A
0%
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GB5 Vulkan - N/A
0%
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GB5 Vulkan - N/A
0%
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OCT 2020.1 - N/A
0%
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OCT 2020.1 - N/A
0%
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OCT Metal - N/A
0%
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OCT Metal - N/A
0%
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Manufacturer
NVIDIA
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Manufacturer
NVIDIA
|
|
Chip Designer
NVIDIA
|
Chip Designer
NVIDIA
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Architecture
Fermi
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Architecture
Kepler
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Family
GeForce 600
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Family
GeForce 600
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Codename
NVCE
GF114
Variant
GF114-400-A1
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Codename
NVE6
GK106
-
-
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Market Segment
Desktop
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Market Segment
Desktop
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Release Date
4/24/2012
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Release Date
4/22/2013
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Foundry
TSMC
-
|
Foundry
TSMC
-
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Fabrication Node
40nm
-
|
Fabrication Node
28nm
-
|
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Die Size
332 mm²
-
|
Die Size
221 mm²
-
|
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Transistor Count
2 Billion
-
|
Transistor Count
2.5 Billion
-
|
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Transistor Density
5.87M/mm²
-
|
Transistor Density
11.49M/mm²
-
|
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Form
PCIe Card
|
Form
PCIe Card
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|
Shading Units
288 Shaders
-
|
Shading Units
576 Shaders
-
|
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Texture Mapping Units
48 TMUs
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Texture Mapping Units
48 TMUs
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|
Render Output Units
24 ROPs
|
Render Output Units
16 ROPs
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-
-
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-
-
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-
-
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-
-
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Streaming Multiprocessors
6 SMs
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Streaming Multiprocessors
3 SMs
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-
-
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-
-
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-
-
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-
-
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-
-
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-
-
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1552MHz Shader
-
776MHz
|
-
-
824MHz Base
889MHz
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-
-
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-
-
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-
-
-
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-
-
-
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-
-
-
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-
-
-
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-
-
-
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-
-
-
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FP32
0.89 TFLOPS
|
FP32
1.02 TFLOPS
|
|
-
-
|
-
-
|
|
FP64
0.07 TFLOPS
-
|
FP64
0.04 TFLOPS
-
|
|
-
-
|
-
-
|
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-
-
-
|
-
-
-
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Pixel Fillrate
18.624 GPixel/s
|
Pixel Fillrate
14.216 GPixel/s
|
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-
-
|
-
-
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Texture Fillrate
37.248 GTexel/s
|
Texture Fillrate
42.648 GTexel/s
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-
-
|
-
-
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L1
-
64KB/SM
-
-
|
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
-
|
|
Bus Width
192Bit
|
Bus Width
128Bit
|
|
Clock
957MHz
Transfer Rate
3.8GT/s
Bandwidth
91.9GB/s
|
Clock
1000MHz
Transfer Rate
4GT/s
Bandwidth
64GB/s
|
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-
-
-
-
-
-
-
-
-
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-
-
-
-
-
-
-
-
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TDP
140W
|
TDP
64W
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-
-
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-
-
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-
-
-
-
-
-
-
-
2x DVI-I Dual-Link
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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1x mini-HDMI 1.3
-
-
-
-
-
-
-
-
-
-
-
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-
-
-
-
-
-
-
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1x DVI-I Dual-Link
-
-
-
-
-
-
-
-
-
-
-
-
-
1x DisplayPort 1.2
-
-
-
-
-
-
-
-
-
-
-
1x HDMI 1.4
-
-
-
-
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Max Resolution
2560x1600
|
Max Resolution
4096x2304
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|
Max Resolution Refresh Rate
60Hz
|
Max Resolution Refresh Rate
30Hz
|
|
Variable Refresh Rate
-
-
-
|
Variable Refresh Rate
G-Sync
FreeSync
-
|
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Display Stream Compression (DSC)
Not Supported
|
Display Stream Compression (DSC)
Not Supported
|
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Multi Monitor Support
2
|
Multi Monitor Support
2
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-
-
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-
-
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No Encoders
-
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Model
NVENC 1
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-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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Codec
-
-
-
-
-
-
-
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AVC (H.264)
-
-
-
-
-
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No Decoders
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Model
NVDEC 1
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-
-
-
-
-
-
-
-
-
-
-
-
-
-
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Codec
MPEG-1
MPEG-2
MPEG-4
-
VC-1
-
-
-
AVC (H.264)
-
-
-
-
-
|
|
Direct X
12
Direct 3D
11_0
|
Direct X
12
Direct 3D
11_0
|
|
OpenGL
4.6
OpenCL
1.1
-
-
|
OpenGL
4.6
OpenCL
3.0
Vulkan
1.2
|
|
Shader Model
5.1
CUDA
2.1
-
-
PureVideo HD
VP4
VDPAU
Feature Set C
|
Shader Model
6.5
CUDA
3.0
-
-
PureVideo HD
VP5
VDPAU
Feature Set D
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-
-
-
1x Fan
|
-
-
-
1x Fan
|
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-
-
-
-
-
-
-
-
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-
-
-
-
-
-
-
-
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Slots Required
2.0
PCIe Version
2.0
PCIe Lanes
16
|
Slots Required
1.0
PCIe Version
3.0
PCIe Lanes
16
|
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-
-
-
-
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-
-
-
-
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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
168 mm (6.61 in)
Depth
20 mm (0.79 in)
|
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