HD Graphics 620 and GeForce GTX 680 Mac Edition - video card comparison
HD Graphics 620
GeForce GTX 680 Mac Edition
Architecture
Gen. 9.5 Kaby Lake (2015−2017)
Kepler (2012−2018)
GPU code name
Kaby-Lake GT2
GK104
Market segment
Laptop
Desktop
Release date
August 2016
April 2013
Interface
PCIe 3.0 x1
PCIe 2.0 x16
Supplementary power connectors
-
2x 6-pin
Boost clock speed
1050 MHz
1058 MHz
Core clock speed
300 MHz
1006 MHz
Floating-point performance
403.2 gflops
3,250 gflops
Manufacturing process technology
14 nm
28 nm
Number of transistors
189 million
3,540 million
Pipelines / CUDA cores
24
1536
Power consumption (TDP)
15 Watt
195 Watt
Texture fill rate
25.20
135.4
Memory type
DDR3L/LPDDR3/LPDDR4
GDDR5
Maximum RAM amount
32 GB
2 GB
Memory bus width
64/128 Bit
256 Bit
Memory clock speed
System Shared
6008 MHz
Memory bandwidth
-
192.3 GB/s
Shared memory
+
-
Display Connectors
No outputs
2x DVI, 1x HDMI, 1x DisplayPort
HDMI
-
+
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
+
1.1.126
Quick Sync
+
-