NVIDIA GeForce GTX 550 Ti vs NVIDIA GeForce GT 645
NVIDIA GeForce GTX 550 Ti
$149
NVIDIA GeForce GT 645
|
192 Shaders
Shared Memory
900MHz
|
288 Shaders
1GB GDDR5
776MHz
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|
Peak AI Performance
0.69 TOPS
INT32
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Peak AI Performance
0.89 TOPS
INT32
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FP32
690 GFLOPS
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FP32
890 GFLOPS
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-
-
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-
-
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Form Factor
PCIe Card
2.0-Slots
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Form Factor
PCIe Card
2.0-Slots
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TDP
116W
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TDP
140W
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Power Connectors
1x 6-Pin
-
-
-
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-
-
-
-
-
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GB6 OpenCL N/A
0%
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GB6 OpenCL N/A
0%
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GB6 Metal N/A
0%
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GB6 Metal N/A
0%
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GB6 Vulkan N/A
0%
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GB6 Vulkan N/A
0%
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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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Peak AI
Performance
0.69 TOPS
INT32
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Peak AI
Performance
0.89 TOPS
INT32
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FP32
690 GFLOPS
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-
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FP32
890 GFLOPS
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-
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FP64
60 GFLOPS
-
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FP64
70 GFLOPS
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INT32
0.69 TOPS
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INT32
0.89 TOPS
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-
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-
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Pixel
Fillrate
21.6 GPixel/s
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Pixel
Fillrate
18.624 GPixel/s
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-
-
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-
-
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Texture
Fillrate
28.8 GTexel/s
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Texture
Fillrate
37.248 GTexel/s
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Manufacturer
NVIDIA
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Manufacturer
NVIDIA
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Chip Designer
NVIDIA
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Chip Designer
NVIDIA
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Architecture
Fermi
|
Architecture
Fermi
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Family
GeForce 500
|
Family
GeForce 600
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Codename
NVCF
GF116
Variant
GF116-400
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Codename
NVCE
GF114
Variant
GF114-400-A1
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Market Segment
Desktop
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Market Segment
Desktop
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Release Date
3/15/2011
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Release Date
4/24/2012
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Foundry
TSMC
-
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Foundry
TSMC
-
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Fabrication Node
40nm
-
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Fabrication Node
40nm
-
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Die Size
238 mm²
-
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Die Size
332 mm²
-
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Transistor Count
1.2 Billion
-
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Transistor Count
2 Billion
-
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Transistor Density
4.92M/mm²
-
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Transistor Density
5.87M/mm²
-
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Form
PCIe Card
|
Form
PCIe Card
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Shading Units
192 Shaders
-
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Shading Units
288 Shaders
-
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Texture Mapping Units
32 TMUs
|
Texture Mapping Units
48 TMUs
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Render Output Units
24 ROPs
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Render Output Units
24 ROPs
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-
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-
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-
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-
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Streaming Multiprocessors
4 SMs
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Streaming Multiprocessors
6 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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1800MHz Shader
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900MHz
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1552MHz Shader
-
776MHz
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-
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-
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L1
-
64KB/SM
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-
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L1
-
64KB/SM
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-
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L2
384KB Shared
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L2
512KB Shared
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-
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-
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Shared Memory
-
-
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1GB
GDDR5
-
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Bus Width
128Bit
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Bus Width
192Bit
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Clock
1026MHz
Transfer Rate
4.1GT/s
Bandwidth
65.7GB/s
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Clock
957MHz
Transfer Rate
3.8GT/s
Bandwidth
91.9GB/s
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TDP
116W
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TDP
140W
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2x DVI-I Dual-Link
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1x mini-HDMI 1.3
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2x DVI-I Dual-Link
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1x mini-HDMI 1.3
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Max Resolution
2560x1600
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Max Resolution
2560x1600
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Max Resolution Refresh Rate
60Hz
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Max Resolution Refresh Rate
60Hz
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Variable Refresh Rate
-
-
-
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Variable Refresh Rate
-
-
-
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Display Stream Compression (DSC)
Not Supported
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Display Stream Compression (DSC)
Not Supported
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Multi Monitor Support
2
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Multi Monitor Support
2
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-
-
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-
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No Encoders
-
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No Encoders
-
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No Decoders
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No Decoders
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Direct X
12
Direct 3D
11_0
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Direct X
12
Direct 3D
11_0
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OpenGL
4.6
OpenCL
1.1
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-
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OpenGL
4.6
OpenCL
1.1
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-
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Shader Model
5.1
CUDA
2.1
-
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PureVideo HD
VP4
VDPAU
Feature Set C
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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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-
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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
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Slots Required
2.0
PCIe Version
2.0
PCIe Lanes
16
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Multi GPU Support
Supported
Type
2-way SLI
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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
210 mm (8.27 in)
Depth
38 mm (1.5 in)
|
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