Radeon R7 250X and HD Graphics 405 - video card comparison
Radeon R7 250X
HD Graphics 405
Architecture
GCN 1.0 (2012−2020)
Gen. 8 (2015−2016)
GPU code name
Cape Verde
Braswell
Market segment
Desktop
Laptop
Release date
February 2014
April 2016
Bus support
PCIe 3.0
-
Interface
PCIe 3.0 x16
PCIe 3.0 x1
Supplementary power connectors
1 x 6-pin
-
Boost clock speed
1000 MHz
700 MHz
Core clock speed
-
320 MHz
Floating-point performance
1,216 gflops
213.1 gflops
Manufacturing process technology
28 nm
14 nm
Number of transistors
1,500 million
189 million
Pipelines / CUDA cores
640
16
Power consumption (TDP)
80 Watt
6 Watt
Texture fill rate
38.00
11.20
Memory type
GDDR5
System Shared
Maximum RAM amount
2 GB
System Shared
Memory bus width
128 Bit
64/128 Bit
Memory clock speed
1625 MHz
System Shared
Memory bandwidth
96 GB/s
-
Shared memory
-
+
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
No outputs
Eyefinity
1
-
HDMI
+
-
DisplayPort support
-
-
DirectX
DirectX® 12
12 (11_1)
Mantle
-
-
OpenCL
1.2
2.0
OpenGL
4.6
4.3
Shader Model
5.1
5.1
Vulkan
-
1.1.80
AppAcceleration
-
-
CrossFire
1
-
DDMA audio
+
-
Enduro
-
-
FreeSync
1
-
HD3D
-
-
PowerTune
-
-
TrueAudio
-
-
ZeroCore
-
-