NVIDIA GeForce GTX 660 OEM vs NVIDIA A40 PCIe
GPU · Specs Compare
Graphics Card
Release Date
Aug 2012
Oct 2020
Generation
GeForce 600
Tesla
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
823 MHz
1305 MHz
Boost Clock
888 MHz
1740 MHz
Memory Clock
1400 MHz
1812 MHz
Memory
Memory Size
1536MB
48GB
Memory Type
GDDR5
GDDR6
Memory Bus
192bit
384bit
Bandwidth
134.4GB/s
695.8GB/s
Render Config
Shading Units
1152
10752
TMUs
96
336
ROPs
24
112
L1 Cache
16 KB (per SMX)
128 KB (per SM)
L2 Cache
384 KB
6 MB
SM Count
—
84
Tensor Cores
—
336
RT Cores
—
84
Theoretical Performance
Pixel Rate
21.31 GPixel/s
194.9 GPixel/s
Texture Rate
85.25 GTexel/s
584.6 GTexel/s
FP32 (float)
2.046 TFLOPS
37.42 TFLOPS
FP64 (double)
85.25 GFLOPS
584.6 GFLOPS
FP16 (half)
—
37.42 TFLOPS
Graphics Processor
GPU Name
GK104
GA102
GPU Variant
GK104-200-KD-A2
—
Architecture
Kepler
Ampere
Foundry
TSMC
Samsung
Process Size
28 nm
8 nm
Transistors
3.54 billion
28.3 billion
Die Size
294 mm²
628 mm²
Board Design
TDP
130W
300W
Suggested PSU
300 W
700 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
3x DisplayPort 1.4a
Power Connectors
1x 6-pin
8-pin EPS
Graphics Features
DirectX
12 (11_0)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.1
1.3
CUDA
3.0
8.6
Shader Model
5.1
6.6
Benchmark
3DMark Time Spy
1,194
—
3DMark Time Spy Extreme
260
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.