Iris Pro Graphics 580 and GeForce GT 640M - video card comparison
Passmark - benchmark score Iris Pro Graphics 580 vs GeForce GT 640M
Iris Pro Graphics 580
1896
GeForce GT 640M
943
Iris Pro Graphics 580
GeForce GT 640M
Architecture
Gen. 9 Skylake (2015−2016)
Kepler (2012−2018)
GPU code name
Skylake GT4e
N13P-GS
Market segment
Laptop
Laptop
Release date
September 2015
March 2012
Bus support
-
PCI Express 2.0, PCI Express 3.0
Interface
PCIe 3.0 x1
PCIe 3.0 x16
Boost clock speed
1050 MHz
645 MHz
Core clock speed
350 MHz
Up to 625 MHz
CUDA cores
-
384
Floating-point performance
-
480.0 gflops
Manufacturing process technology
14 nm
28 nm
Number of transistors
189 million
1,270 million
Pipelines / CUDA cores
72
384
Power consumption (TDP)
15 Watt
32 Watt
Texture fill rate
72.00
Up to 20.0 billion/sec
Memory type
DDR3L/LPDDR3/DDR4
DDR3\GDDR5
Maximum RAM amount
64 GB
2 GB
Memory bus width
eDRAM + 64/128 Bit
128bit
Memory clock speed
System Shared
1800 - 4000 MHz
Memory bandwidth
-
Up to 64.0 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
1.1.97
1.1.126
3D Blu-Ray
-
+
Optimus
-
+
Quick Sync
+
-