NVIDIA GeForce RTX 4090 vs AMD Radeon 660M
GPU · Specs Compare
Graphics Card
Release Date
Sep 2022
Jan 2022
Generation
GeForce 40
Rembrandt
Type
Desktop
Integrated
Bus Interface
PCIe 4.0 x16
PCIe 4.0 x8
Clock Speeds
Base Clock
2235 MHz
1500 MHz
Boost Clock
2520 MHz
1900 MHz
Memory Clock
1313 MHz
System Shared
Memory
Memory Size
24GB
System Shared
Memory Type
GDDR6X
System Shared
Memory Bus
384bit
System Shared
Bandwidth
1.01TB/s
System Dependent
Render Config
SM Count
128
—
Shading Units
16384
384
TMUs
512
24
ROPs
176
16
Tensor Cores
512
—
RT Cores
128
6
L1 Cache
128 KB (per SM)
128 KB per Array
L2 Cache
72 MB
2 MB
Compute Units
—
6
Theoretical Performance
Pixel Rate
443.5 GPixel/s
30.40 GPixel/s
Texture Rate
1290.2 GTexel/s
45.60 GTexel/s
FP16 (half)
82.58 TFLOPS
2.918 TFLOPS
FP32 (float)
82.58 TFLOPS
1459 GFLOPS
FP64 (double)
1290.2 GFLOPS
91.20 GFLOPS
Graphics Processor
GPU Name
AD102
Rembrandt
GPU Variant
AD102-300-A1
—
Architecture
Ada Lovelace
RDNA 2.0
Foundry
TSMC
TSMC
Process Size
5 nm
6 nm
Transistors
76.3 billion
13.1 billion
Die Size
609 mm²
210 mm²
Board Design
TDP
450W
15W
Suggested PSU
850 W
—
Outputs
1x HDMI 2.13x DisplayPort 1.4a
No outputs
Power Connectors
1x 16-pin
None
Graphics Features
DirectX
12 Ultimate (12_2)
12 Ultimate (12_2)
OpenGL
4.6
4.6
OpenCL
3.0
2.0
Vulkan
1.4
1.2
CUDA
8.9
—
Shader Model
6.8
6.5
Benchmark
3DMark Time Spy
—
1,537
3DMark Time Spy Extreme
—
701
▲ Specs Compare
Data sourced from official specifications and benchmark tests.