NVIDIA GeForce GTX 660 Rev. 2 vs NVIDIA GeForce RTX 3090
GPU Specs Compare
Graphics Card
Release Date
Sep 2014
Sep 2020
Generation
GeForce 600
GeForce 30
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
980 MHz
1395 MHz
Boost Clock
1032 MHz
1695 MHz
Memory Clock
1502 MHz
1219 MHz
Memory
Memory Size
2GB
24GB
Memory Type
GDDR5
GDDR6X
Memory Bus
192bit
384bit
Bandwidth
144.2GB/s
936.2GB/s
Render Config
Shading Units
960
10496
TMUs
80
328
ROPs
24
112
L1 Cache
16 KB (per SMX)
128 KB (per SM)
L2 Cache
384 KB
6 MB
SM Count
-
82
Tensor Cores
-
328
RT Cores
-
82
Theoretical Performance
Pixel Rate
20.64 GPixel/s
189.8 GPixel/s
Texture Rate
82.56 GTexel/s
556.0 GTexel/s
FP32 (float)
1.981 TFLOPS
35.58 TFLOPS
FP64 (double)
82.56 GFLOPS
556.0 GFLOPS
FP16 (half)
-
35.58 TFLOPS
Graphics Processor
GPU Name
GK104
GA102
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
GPU Variant
-
GA102-300-A1
Board Design
TDP
140W
350W
Suggested PSU
300 W
750 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x HDMI 2.13x DisplayPort 1.4a
Power Connectors
1x 6-pin
1x 12-pin
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