NVIDIA GeForce GT 645 vs AMD Radeon HD 7750
NVIDIA GeForce GT 645
AMD Radeon HD 7750
$110
|
288 Shaders
1GB GDDR5
776MHz
|
512 Shaders
1GB GDDR5
800MHz
|
|
Peak AI Performance
0.89 TOPS
INT32
|
Peak AI Performance
820 GFLOPS
FP32
|
|
FP32
890 GFLOPS
|
FP32
820 GFLOPS
|
|
Form Factor
PCIe Card
2.0-Slots
|
Form Factor
PCIe Card
1.0-Slots
|
|
TDP
140W
|
TDP
55W
|
Peak AI Performance
|
|
GeForce GT 645 - 0.89 TOPS INT32
x1.09
Radeon HD 7750 - 820 GFLOPS FP32
x1
FP32
|
|
GeForce GT 645 - 890 GFLOPS FP32
x1.09
Radeon HD 7750 - 820 GFLOPS FP32
x1
|
|
GeForce GT 645 - 91.9GB/s
x1.28
Radeon HD 7750 - 72GB/s
x1
|
|
GeForce GT 645 - 140W
x2.55
Radeon HD 7750 - 55W
x1
|
0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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0%
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Manufacturer
NVIDIA
|
Manufacturer
AMD
|
|
Chip Designer
NVIDIA
|
Chip Designer
AMD
|
|
Architecture
Fermi
|
Architecture
GCN 1
|
|
Family
GeForce 600
|
Family
Radeon HD 7000
|
|
Codename
NVCE
GF114
Variant
GF114-400-A1
|
Codename
Cape Verde
-
Variant
Cape Verde Pro
|
|
Market Segment
Desktop
|
Market Segment
Desktop
|
|
Release Date
4/24/2012
|
Release Date
2/1/2012
|
|
Foundry
TSMC
|
Foundry
TSMC
|
|
Fabrication Node
40nm
|
Fabrication Node
28nm
|
|
Die Size
332 mm²
|
Die Size
123 mm²
|
|
Transistor Count
2 Billion
|
Transistor Count
1.5 Billion
|
|
Transistor Density
5.87M/mm²
|
Transistor Density
12.20M/mm²
|
|
Form
PCIe Card
|
Form
PCIe Card
|
|
Shading Units
288 Shaders
|
Shading Units
512 Shaders
|
|
Texture Mapping Units
48 TMUs
|
Texture Mapping Units
32 TMUs
|
|
Render Output Units
24 ROPs
|
Render Output Units
16 ROPs
|
|
Streaming Multiprocessors
6 SMs
|
-
-
|
|
-
-
|
Compute Units
8 CUs
|
|
1552MHz Shader
776MHz
|
-
800MHz
|
|
Peak AI Performance
0.89 TOPS
INT32
|
Peak AI Performance
820 GFLOPS
FP32
|
|
FP32
890 GFLOPS
|
FP32
820 GFLOPS
|
|
FP64
70 GFLOPS
|
FP64
50 GFLOPS
|
|
INT32
0.89 TOPS
|
-
-
|
|
Pixel Fillrate
18.624 GPixel/s
|
Pixel Fillrate
12.8 GPixel/s
|
|
Texture Fillrate
37.248 GTexel/s
|
Texture Fillrate
25.6 GTexel/s
|
|
L1
64KB/SM
-
|
L1
-
16KB/CU
|
|
L2
512KB Shared
|
L2
256KB Shared
|
|
1GB
GDDR5
|
1GB
GDDR5
|
|
Bus Width
192Bit
|
Bus Width
128Bit
|
|
Clock
957MHz
Transfer Rate
3.8GT/s
Bandwidth
91.9GB/s
|
Clock
1125MHz
Transfer Rate
4.5GT/s
Bandwidth
72GB/s
|
|
TDP
140W
|
TDP
55W
|
|
2x DVI-I Dual-Link
-
1x mini-HDMI 1.3
-
|
1x DVI-I Dual-Link
1x DisplayPort 1.2
-
1x HDMI 1.4
|
|
Max Resolution
2560x1600
|
Max Resolution
4096x2160
|
|
Max Resolution Refresh Rate
60Hz
|
Max Resolution Refresh Rate
60Hz
|
|
Variable Refresh Rate
|
Variable Refresh Rate
|
|
Display Stream Compression (DSC)
Not Supported
|
Display Stream Compression (DSC)
Not Supported
|
|
Multi Monitor Support
2
|
Multi Monitor Support
3
|
|
No Encoders
|
No Encoders
|
|
No Decoders
|
Model
UVD 3.0
|
|
-
-
-
-
-
|
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_1
|
|
OpenGL
4.6
OpenCL
1.1
-
-
|
OpenGL
4.6
OpenCL
2.1
Vulkan
1.2
|
|
Shader Model
5.1
CUDA
2.1
-
-
PureVideo HD
VP4
VDPAU
Feature Set C
|
Shader Model
6.5
-
-
GFX
6
-
-
-
-
|
|
1x Fan
|
1x Fan
|
|
Slots Required
2.0
PCIe Version
2.0
PCIe Lanes
16
|
Slots Required
1.0
PCIe Version
3.0
PCIe Lanes
16
|
|
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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