NVIDIA GeForce RTX 5090 Mobile vs NVIDIA GeForce GTX 660
GPU · Specs Compare
Graphics Card
Release Date
Mar 2025
Sep 2012
Generation
GeForce 50 Mobile
GeForce 600
Type
Mobile
Desktop
Bus Interface
PCIe 5.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
990 MHz
980 MHz
Boost Clock
1515 MHz
1032 MHz
Memory Clock
1750 MHz
1502 MHz
Memory
Memory Size
24GB
2GB
Memory Type
GDDR7
GDDR5
Memory Bus
256bit
192bit
Bandwidth
896.0GB/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
64 MB
384 KB
Theoretical Performance
Pixel Rate
169.7 GPixel/s
20.64 GPixel/s
Texture Rate
496.9 GTexel/s
82.56 GTexel/s
FP16 (half)
31.80 TFLOPS
—
FP32 (float)
31.80 TFLOPS
1.981 TFLOPS
FP64 (double)
496.9 GFLOPS
82.56 GFLOPS
Graphics Processor
GPU Name
GB203
GK106
GPU Variant
GN22-X11-A1
GK106-400-A1
Architecture
Blackwell 2.0
Kepler
Foundry
TSMC
TSMC
Process Size
5 nm
28 nm
Transistors
45.6 billion
2.54 billion
Die Size
378 mm²
221 mm²
Board Design
TDP
95W
140W
Suggested PSU
550 W
300 W
Outputs
Portable Device Dependent
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
None
1x 6-pin
Graphics Features
DirectX
12 Ultimate (12_2)
12 (11_0)
OpenGL
4.6
4.6
OpenCL
3.0
3.0
Vulkan
1.4
1.1
CUDA
12.0
3.0
Shader Model
6.8
5.1
Benchmark
Blender
8,089
111
3DMark Time Spy
—
1,194
3DMark Time Spy Extreme
—
260
OctaneBench
—
27
▲ Specs Compare
Data sourced from official specifications and benchmark tests.