Radeon HD 4250 and Radeon HD 6390 - video card comparison
Radeon HD 4250
Radeon HD 6390
Architecture
RV6xx (2007−2010)
TeraScale 2 (2009−2015)
GPU code name
RS880M
Redwood
Market segment
Laptop
Desktop
Release date
May 2010
July 2011
Interface
PCIe 2.0 x16
PCIe 2.0 x16
Supplementary power connectors
None
None
Core clock speed
500 MHz
550 MHz
Floating-point performance
47.52 gflops
352.0 gflops
Manufacturing process technology
55 nm
40 nm
Number of transistors
181 million
627 million
Pipelines / CUDA cores
40
320
Power consumption (TDP)
25 Watt
39 Watt
Texture fill rate
2.376
8.800
Memory type
DDR2
DDR2
Maximum RAM amount
512 MB
1 GB
Memory bus width
64 Bit
128 Bit
Memory clock speed
792 MHz
1000 MHz
Memory bandwidth
6.336 GB/s
16 GB/s
Shared memory
+
-
Display Connectors
1x DVI, 1x VGA, 1x S-Video
1x DVI, 1x HDMI, 1x VGA
HDMI
-
+
DirectX
10.1 (10_1)
11.2 (11_0)
OpenCL
N/A
1.2
OpenGL
3.3
4.4
Shader Model
4.1
5.0
Vulkan
N/A
N/A