Radeon HD 7400G and Radeon R9 255 OEM - video card comparison
Radeon HD 7400G
Radeon R9 255 OEM
Architecture
Terascale 3 (2010−2013)
GCN 1.0 (2012−2020)
GPU code name
Trinity
Cape Verde
Market segment
Laptop
Desktop
Release date
September 2012
December 2013
Interface
IGP
PCIe 3.0 x16
Supplementary power connectors
-
1x 6-pin
Boost clock speed
423 MHz
930 MHz
Core clock speed
327 MHz
900 MHz
Floating-point performance
-
952.3 gflops
Manufacturing process technology
32 nm
28 nm
Number of transistors
1,303 million
1,500 million
Pipelines / CUDA cores
192
512
Power consumption (TDP)
17 Watt
65 Watt
Texture fill rate
5.088
29.76
Memory type
System Shared
GDDR5
Maximum RAM amount
System Shared
2 GB
Memory bus width
System Shared
128 Bit
Memory clock speed
System Shared
4600 MHz
Memory bandwidth
-
73.6 GB/s
Shared memory
+
-
Display Connectors
No outputs
No outputs
DirectX
11.2 (11_0)
12 (11_1)
OpenCL
1.2
1.2
OpenGL
4.4
4.6
Shader Model
5.0
5.1
Vulkan
N/A
1.2.131