Iris Plus Graphics 655 and GeForce GTX 660M Mac Edition - video card comparison
Iris Plus Graphics 655
GeForce GTX 660M Mac Edition
Architecture
Gen. 9.5 Kaby Lake (2015−2017)
Kepler (2012−2018)
GPU code name
Kaby Lake GT3e
GK107
Market segment
Laptop
Desktop
Release date
September 2017
April 2013
Interface
PCIe 3.0 x1
MXM-B (3.0)
Supplementary power connectors
-
None
Boost clock speed
1200 MHz
-
Core clock speed
300 MHz
950 MHz
Floating-point performance
-
729.6 gflops
Manufacturing process technology
14 nm
28 nm
Number of transistors
189 million
1,270 million
Pipelines / CUDA cores
48
384
Power consumption (TDP)
15 Watt
50 Watt
Texture fill rate
50.40
30.40
Memory type
DDR3/DDR4
GDDR5
Maximum RAM amount
System Shared
512 MB
Memory bus width
System Shared
128 Bit
Memory clock speed
System Shared
5000 MHz
Memory bandwidth
-
80 GB/s
Shared memory
+
-
Display Connectors
No outputs
No outputs
DirectX
12 (12_1)
12 (11_0)
CUDA
-
3.0
OpenCL
2.1
1.2
OpenGL
4.6
4.6
Shader Model
6.4
5.1
Vulkan
1.1.103
1.1.126
Quick Sync
+
-