AMD Radeon RX 550X Mobile vs NVIDIA GeForce GTX 660 OEM
GPU · Specs Compare
Graphics Card
Release Date
Apr 2018
Aug 2012
Generation
Mobility Radeon
GeForce 600
Type
Mobile
Desktop
Bus Interface
PCIe 3.0 x8
PCIe 3.0 x16
Clock Speeds
Base Clock
1100 MHz
823 MHz
Boost Clock
1176 MHz
888 MHz
Memory Clock
1500 MHz
1400 MHz
Memory
Memory Size
2GB
1536MB
Memory Type
GDDR5
GDDR5
Memory Bus
64bit
192bit
Bandwidth
48.00GB/s
134.4GB/s
Render Config
Compute Units
10
—
Shading Units
640
1152
TMUs
40
96
ROPs
16
24
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
512 KB
384 KB
Theoretical Performance
Pixel Rate
18.82 GPixel/s
21.31 GPixel/s
Texture Rate
47.04 GTexel/s
85.25 GTexel/s
FP16 (half)
1.505 TFLOPS
—
FP32 (float)
1.505 TFLOPS
2.046 TFLOPS
FP64 (double)
94.08 GFLOPS
85.25 GFLOPS
Graphics Processor
GPU Name
Polaris 23
GK104
GPU Variant
Polaris 23 MXT
GK104-200-KD-A2
Architecture
GCN 4.0
Kepler
Foundry
GlobalFoundries
TSMC
Process Size
14 nm
28 nm
Transistors
2.2 billion
3.54 billion
Die Size
103 mm²
294 mm²
Board Design
TDP
50W
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 (12_0)
12 (11_0)
OpenGL
4.6
4.6
OpenCL
2.1
3.0
Vulkan
1.2
1.1
Shader Model
6.4
5.1
CUDA
—
3.0
Benchmark
3DMark Time Spy
—
1,194
3DMark Time Spy Extreme
—
260
▲ Specs Compare
Data sourced from official specifications and benchmark tests.