NVIDIA GeForce RTX 3080 Mobile vs NVIDIA GeForce GTX 660 OEM
GPU · Specs Compare
Graphics Card
Release Date
Jan 2021
Aug 2012
Generation
GeForce 30 Mobile
GeForce 600
Type
Mobile
Desktop
Bus Interface
PCIe 4.0 x16
PCIe 3.0 x16
Clock Speeds
Base Clock
1110 MHz
823 MHz
Boost Clock
1545 MHz
888 MHz
Memory Clock
1750 MHz
1400 MHz
Memory
Memory Size
8GB
1536MB
Memory Type
GDDR6
GDDR5
Memory Bus
256bit
192bit
Bandwidth
448.0GB/s
134.4GB/s
Render Config
SM Count
48
—
Shading Units
6144
1152
TMUs
192
96
ROPs
96
24
Tensor Cores
192
—
RT Cores
48
—
L1 Cache
128 KB (per SM)
16 KB (per SMX)
L2 Cache
4 MB
384 KB
Theoretical Performance
Pixel Rate
148.3 GPixel/s
21.31 GPixel/s
Texture Rate
296.6 GTexel/s
85.25 GTexel/s
FP16 (half)
18.98 TFLOPS
—
FP32 (float)
18.98 TFLOPS
2.046 TFLOPS
FP64 (double)
296.6 GFLOPS
85.25 GFLOPS
Graphics Processor
GPU Name
GA104
GK104
GPU Variant
GA104-775-A1
GK104-200-KD-A2
Architecture
Ampere
Kepler
Foundry
Samsung
TSMC
Process Size
8 nm
28 nm
Transistors
17.4 billion
3.54 billion
Die Size
392 mm²
294 mm²
Board Design
TDP
115W
130W
Outputs
No outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
Power Connectors
None
1x 6-pin
Suggested PSU
—
300 W
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
Benchmark
3DMark Time Spy
—
1,194
3DMark Time Spy Extreme
—
260
▲ Specs Compare
Data sourced from official specifications and benchmark tests.