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GPU Comparison
AMD Radeon R9 Nano vs NVIDIA GeForce GT 640
AMD Radeon R9 Nano vs NVIDIA GeForce GT 640
VS
AMD Radeon R9 Nano
NVIDIA GeForce GT 640
We compared two Desktop platform GPUs: 4GB VRAM Radeon R9 Nano and 2GB VRAM GeForce GT 640 to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.
Main Differences
AMD Radeon R9 Nano 's Advantages
Released 3 years and 2 months late
More VRAM (4GB vs 2GB)
Larger VRAM bandwidth (512.0GB/s vs 28.51GB/s)
3712 additional rendering cores
NVIDIA GeForce GT 640 's Advantages
Lower TDP (65W vs 175W)
Score
Benchmark
FP32 (float)
Radeon R9 Nano
+1082%
8.192 TFLOPS
GeForce GT 640
0.693 TFLOPS
Radeon R9 Nano
VS
GeForce GT 640
Graphics Card
Aug 2015
Release Date
Jun 2012
Pirate Islands
Generation
GeForce 600
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 3.0 x16
Clock Speeds
-
Base Clock
-
-
Boost Clock
-
500 MHz
Memory Clock
891 MHz
Memory
4GB
Memory Size
2GB
HBM
Memory Type
DDR3
4096bit
Memory Bus
128bit
512.0GB/s
Bandwidth
28.51GB/s
Render Config
-
SM Count
-
64
Compute Units
-
4096
Shading Units
384
256
TMUs
32
64
ROPs
16
-
Tensor Cores
-
-
RT Cores
-
16 KB (per CU)
L1 Cache
16 KB (per SMX)
2 MB
L2 Cache
256 KB
Theoretical Performance
64.00 GPixel/s
Pixel Rate
7.216 GPixel/s
256.0 GTexel/s
Texture Rate
28.86 GTexel/s
8.192 TFLOPS
FP16 (half)
-
8.192 TFLOPS
FP32 (float)
692.7 GFLOPS
512.0 GFLOPS
FP64 (double)
28.86 GFLOPS
Graphics Processor
Fiji
GPU Name
GK107
Fiji XT CA (215-0862120)
GPU Variant
GK107-300-A2
GCN 3.0
Architecture
Kepler
TSMC
Foundry
TSMC
28 nm
Process Size
28 nm
8.9 billion
Transistors
1.27 billion
596 mm²
Die Size
118 mm²
Board Design
175W
TDP
65W
450 W
Suggested PSU
250 W
1x HDMI 1.4a 3x DisplayPort 1.2
Outputs
1x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
1x 8-pin
Power Connectors
None
Graphics Features
12 (12_0)
DirectX
12 (11_0)
4.6
OpenGL
4.6
2.0
OpenCL
3.0
1.2
Vulkan
1.1
-
CUDA
3.0
6.3
Shader Model
5.1
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5
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6
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8
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9
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10
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