NVIDIA GeForce GTX 660 vs AMD Radeon 550X Mobile
GPU Specs Compare
Graphics Card
Release Date
Sep 2012
Apr 2018
Generation
GeForce 600
Mobility Radeon
Type
Desktop
Mobile
Bus Interface
PCIe 3.0 x16
PCIe 3.0 x8
Clock Speeds
Base Clock
980 MHz
1100 MHz
Boost Clock
1032 MHz
1287 MHz
Memory Clock
1502 MHz
1500 MHz
Memory
Memory Size
2GB
4GB
Memory Type
GDDR5
GDDR5
Memory Bus
192bit
64bit
Bandwidth
144.2GB/s
48.00GB/s
Render Config
Shading Units
960
640
TMUs
80
40
ROPs
24
16
L1 Cache
16 KB (per SMX)
16 KB (per CU)
L2 Cache
384 KB
256 KB
Compute Units
-
10
Theoretical Performance
Pixel Rate
20.64 GPixel/s
20.59 GPixel/s
Texture Rate
82.56 GTexel/s
51.48 GTexel/s
FP32 (float)
1.981 TFLOPS
1.647 TFLOPS
FP64 (double)
82.56 GFLOPS
103.0 GFLOPS
FP16 (half)
-
1.647 TFLOPS
Graphics Processor
GPU Name
GK106
Polaris 23
GPU Variant
GK106-400-A1
Polaris 23 MXT
Architecture
Kepler
GCN 4.0
Foundry
TSMC
GlobalFoundries
Process Size
28 nm
14 nm
Transistors
2.54 billion
2.2 billion
Die Size
221 mm²
103 mm²
Board Design
TDP
140W
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
-
OctaneBench
27
-
Blender
111
-