NVIDIA GeForce GTX 660 vs NVIDIA GeForce RTX 4090
GPU · Specs Compare
Graphics Card
Release Date
Sep 2012
Sep 2022
Generation
GeForce 600
GeForce 40
Type
Desktop
Desktop
Bus Interface
PCIe 3.0 x16
PCIe 4.0 x16
Clock Speeds
Base Clock
980 MHz
2235 MHz
Boost Clock
1032 MHz
2520 MHz
Memory Clock
1502 MHz
1313 MHz
Memory
Memory Size
2GB
24GB
Memory Type
GDDR5
GDDR6X
Memory Bus
192bit
384bit
Bandwidth
144.2GB/s
1.01TB/s
Render Config
Shading Units
960
16384
TMUs
80
512
ROPs
24
176
L1 Cache
16 KB (per SMX)
128 KB (per SM)
L2 Cache
384 KB
72 MB
SM Count
—
128
Tensor Cores
—
512
RT Cores
—
128
Theoretical Performance
Pixel Rate
20.64 GPixel/s
443.5 GPixel/s
Texture Rate
82.56 GTexel/s
1290.2 GTexel/s
FP32 (float)
1.981 TFLOPS
82.58 TFLOPS
FP64 (double)
82.56 GFLOPS
1290.2 GFLOPS
FP16 (half)
—
82.58 TFLOPS
Graphics Processor
GPU Name
GK106
AD102
GPU Variant
GK106-400-A1
AD102-300-A1
Architecture
Kepler
Ada Lovelace
Foundry
TSMC
TSMC
Process Size
28 nm
5 nm
Transistors
2.54 billion
76.3 billion
Die Size
221 mm²
609 mm²
Board Design
TDP
140W
450W
Suggested PSU
300 W
850 W
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
1x HDMI 2.13x DisplayPort 1.4a
Power Connectors
1x 6-pin
1x 16-pin
Graphics Features
DirectX
12 (11_0)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.1
1.4
CUDA
3.0
8.9
Shader Model
5.1
6.8
Benchmark
3DMark Time Spy
1,194
—
3DMark Time Spy Extreme
260
—
OctaneBench
27
—
Blender
111
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.