AMD Radeon RX 580X Mobile vs NVIDIA GeForce GTX 660
GPU · Specs Compare
Graphics Card
Release Date
Apr 2018
Sep 2012
Generation
Mobility Radeon
GeForce 600
Type
Mobile
Desktop
Bus Interface
MXM-B (3.0)
PCIe 3.0 x16
Clock Speeds
Base Clock
1000 MHz
980 MHz
Boost Clock
1077 MHz
1032 MHz
Memory Clock
2000 MHz
1502 MHz
Memory
Memory Size
8GB
2GB
Memory Type
GDDR5
GDDR5
Memory Bus
256bit
192bit
Bandwidth
256.0GB/s
144.2GB/s
Render Config
Compute Units
36
—
Shading Units
2304
960
TMUs
144
80
ROPs
32
24
L1 Cache
16 KB (per CU)
16 KB (per SMX)
L2 Cache
2 MB
384 KB
Theoretical Performance
Pixel Rate
34.46 GPixel/s
20.64 GPixel/s
Texture Rate
155.1 GTexel/s
82.56 GTexel/s
FP16 (half)
4.963 TFLOPS
—
FP32 (float)
4.963 TFLOPS
1.981 TFLOPS
FP64 (double)
310.2 GFLOPS
82.56 GFLOPS
Graphics Processor
GPU Name
Polaris 20
GK106
GPU Variant
Polaris 20M XT
GK106-400-A1
Architecture
GCN 4.0
Kepler
Foundry
GlobalFoundries
TSMC
Process Size
14 nm
28 nm
Transistors
5.7 billion
2.54 billion
Die Size
232 mm²
221 mm²
Board Design
TDP
100W
140W
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
OctaneBench
—
27
Blender
—
111
▲ Specs Compare
Data sourced from official specifications and benchmark tests.