Iris Plus Graphics 655 and GeForce GT 640M LE - video card comparison
Passmark - benchmark score Iris Plus Graphics 655 vs GeForce GT 640M LE
Iris Plus Graphics 655
1787
GeForce GT 640M LE
720
Iris Plus Graphics 655
GeForce GT 640M LE
Architecture
Gen. 9.5 Kaby Lake (2015−2017)
Fermi / Kepler (2012)
GPU code name
Kaby Lake GT3e
N13P-LP
Market segment
Laptop
Laptop
Release date
September 2017
March 2012
Bus support
-
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x1
PCIe 2.0 x16
Boost clock speed
1200 MHz
-
Core clock speed
300 MHz
Up to 500 MHz
CUDA cores
-
Up to 384
Floating-point performance
-
384.0 gflops
Manufacturing process technology
14 nm
28 nm
Number of transistors
189 million
585 million
Pipelines / CUDA cores
48
384
Power consumption (TDP)
15 Watt
20 Watt
Texture fill rate
50.40
Up to 16.0 billion/sec
Memory type
DDR3/DDR4
DDR3\DDR5
Maximum RAM amount
System Shared
2 GB
Memory bus width
System Shared
128bit
Memory clock speed
System Shared
1800 - 4000 MHz
Memory bandwidth
-
Up to 28.8 GB/s
Shared memory
+
-
Display Connectors
No outputs
No outputs
HDMI
-
+
HDCP
-
+
Maximum VGA resolution
-
Up to 2048x1536
DirectX
12 (12_1)
12 API
CUDA
-
+
OpenCL
2.1
1.1
OpenGL
4.6
4.5
Shader Model
6.4
5.1
Vulkan
1.1.103
N/A
3D Blu-Ray
-
+
Optimus
-
+
Quick Sync
+
-