NVIDIA GeForce GTX 660 OEM vs AMD Radeon RX 550 Mobile
GPU · Specs Compare
Graphics Card
Release Date
Aug 2012
Jul 2017
Generation
GeForce 600
Mobility Radeon
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x8
Clock Speeds
Base Clock
823 MHz
1100 MHz
Boost Clock
888 MHz
1287 MHz
Memory Clock
1400 MHz
1500 MHz
Memory
Memory Size
1536MB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
192bit
128bit
Bandwidth
134.4GB/s
96.00GB/s
Render Config
Shading Units
1152
640
TMUs
96
40
ROPs
24
16
L1 Cache
16 KB (per SMX)
16 KB (per CU)
L2 Cache
384 KB
512 KB
Compute Units
—
10
Theoretical Performance
Pixel Rate
21.31 GPixel/s
20.59 GPixel/s
Texture Rate
85.25 GTexel/s
51.48 GTexel/s
FP32 (float)
2.046 TFLOPS
1.647 TFLOPS
FP64 (double)
85.25 GFLOPS
103.0 GFLOPS
FP16 (half)
—
1.647 TFLOPS
Graphics Processor
GPU Name
GK104
Lexa
GPU Variant
GK104-200-KD-A2
Lexa PRO(215-0904018)
Architecture
Kepler
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
28 nm
14 nm
Transistors
3.54 billion
2.2 billion
Die Size
294 mm²
103 mm²
Board Design
TDP
130W
50W
Suggested PSU
300 W
—
Outputs
2x DVI1x HDMI 1.4a1x DisplayPort 1.2
No outputs
Power Connectors
1x 6-pin
None
Graphics Features
DirectX
12 (11_0)
12 (12_0)
OpenGL
4.6
4.6
OpenCL
3.0
2.1
Vulkan
1.1
1.2
CUDA
3.0
—
Shader Model
5.1
6.4
Benchmark
3DMark Time Spy
1,194
—
3DMark Time Spy Extreme
260
—
▲ Specs Compare
Data sourced from official specifications and benchmark tests.