NVIDIA GeForce RTX 3090 vs NVIDIA GeForce GTX 660 Rev. 2
GPU · Specs Compare
Graphics Card
Release Date
Sep 2020
Sep 2014
Generation
GeForce 30
GeForce 600
Type
Desktop
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1395 MHz
980 MHz
Boost Clock
1695 MHz
1032 MHz
Memory Clock
1219 MHz
1502 MHz
Memory
Memory Size
24GB
2GB
Memory Type
GDDR6X
GDDR5
Memory Bus
384bit
192bit
Bandwidth
936.2GB/s
144.2GB/s
Render Config
SM Count
82
—
Shading Units
10496
960
TMUs
328
80
ROPs
112
24
Tensor Cores
328
—
RT Cores
82
—
L1 Cache
128 KB (per SM)
16 KB (per SMX)
L2 Cache
6 MB
384 KB
Theoretical Performance
Pixel Rate
189.8 GPixel/s
20.64 GPixel/s
Texture Rate
556.0 GTexel/s
82.56 GTexel/s
FP16 (half)
35.58 TFLOPS
—
FP32 (float)
35.58 TFLOPS
1.981 TFLOPS
FP64 (double)
556.0 GFLOPS
82.56 GFLOPS
Graphics Processor
GPU Name
GA102
GK104
GPU Variant
GA102-300-A1
—
Architecture
Ampere
Kepler
Foundry
Samsung
TSMC
Process Size
8 nm
28 nm
Transistors
28.3 billion
3.54 billion
Die Size
628 mm²
294 mm²
Board Design
TDP
350W
140W
Suggested PSU
750 W
300 W
Outputs
1x HDMI 2.13x DisplayPort 1.4a
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
1x 12-pin
1x 6-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (11_0)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.3
1.1
CUDA
8.6
3.0
Shader Model
6.6
5.1
▲ Specs Compare
Data sourced from official specifications and benchmark tests.