Home GPU Comparison NVIDIA GeForce GTX 660 Rev. 2 vs NVIDIA A40 PCIe

NVIDIA GeForce GTX 660 Rev. 2 vs NVIDIA A40 PCIe

NVIDIA GeForce GTX 660 Rev. 2
VS
NVIDIA A40 PCIe
NVIDIA GeForce GTX 660 Rev. 2 NVIDIA A40 PCIe
We compared two Desktop platform GPUs: 2GB VRAM GeForce GTX 660 Rev. 2 and 48GB VRAM A40 PCIe to see which GPU has better performance in key specifications, benchmark tests, power consumption, etc.

Main Differences

NVIDIA GeForce GTX 660 Rev. 2 's Advantages
Lower TDP (140W vs 300W)
NVIDIA A40 PCIe 's Advantages
Released 6 years and 1 months late
Boost Clock has increased by 69% (1740MHz vs 1032MHz)
More VRAM (48GB vs 2GB)
Larger VRAM bandwidth (695.8GB/s vs 144.2GB/s)
9792 additional rendering cores

Score

Benchmark

FP32 (float)
GeForce GTX 660 Rev. 2
1.981 TFLOPS
A40 PCIe +1788%
37.42 TFLOPS
GeForce GTX 660 Rev. 2
VS
A40 PCIe

Graphics Card

Sep 2014
Release Date
Oct 2020
GeForce 600
Generation
Tesla
Desktop
Type
Desktop
PCIe 3.0 x16
Bus Interface
PCIe 4.0 x16

Clock Speeds

980 MHz
Base Clock
1305 MHz
1032 MHz
Boost Clock
1740 MHz
1502 MHz
Memory Clock
1812 MHz

Memory

2GB
Memory Size
48GB
GDDR5
Memory Type
GDDR6
192bit
Memory Bus
384bit
144.2GB/s
Bandwidth
695.8GB/s

Render Config

-
SM Count
84
-
Compute Units
-
960
Shading Units
10752
80
TMUs
336
24
ROPs
112
-
Tensor Cores
336
-
RT Cores
84
16 KB (per SMX)
L1 Cache
128 KB (per SM)
384 KB
L2 Cache
6 MB

Theoretical Performance

20.64 GPixel/s
Pixel Rate
194.9 GPixel/s
82.56 GTexel/s
Texture Rate
584.6 GTexel/s
-
FP16 (half)
37.42 TFLOPS
1.981 TFLOPS
FP32 (float)
37.42 TFLOPS
82.56 GFLOPS
FP64 (double)
584.6 GFLOPS

Graphics Processor

GK104
GPU Name
GA102
-
GPU Variant
-
Kepler
Architecture
Ampere
TSMC
Foundry
Samsung
28 nm
Process Size
8 nm
3.54 billion
Transistors
28.3 billion
294 mm²
Die Size
628 mm²

Board Design

140W
TDP
300W
300 W
Suggested PSU
700 W
2x DVI 1x HDMI 1.4a 1x DisplayPort 1.2
Outputs
3x DisplayPort 1.4a
1x 6-pin
Power Connectors
8-pin EPS

Graphics Features

12 (11_0)
DirectX
12 Ultimate (12_2)
4.6
OpenGL
4.6
3.0
OpenCL
3.0
1.1
Vulkan
1.3
3.0
CUDA
8.6
5.1
Shader Model
6.6

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