Radeon HD 4870 and Radeon R7 250 OEM - video card comparison
Radeon HD 4870
Radeon R7 250 OEM
Architecture
TeraScale (2005−2013)
GCN 1.0 (2012−2020)
GPU code name
RV770
Oland
Market segment
Desktop
Desktop
Release date
June 2008
October 2013
Interface
PCIe 2.0 x16
PCIe 3.0 x8
Supplementary power connectors
2x 6-pin
None
Boost clock speed
-
1050 MHz
Core clock speed
750 MHz
1000 MHz
Floating-point performance
1,200.0 gflops
806.4 gflops
Manufacturing process technology
55 nm
28 nm
Number of transistors
956 million
950 million
Pipelines / CUDA cores
800
384
Power consumption (TDP)
150 Watt
65 Watt
Texture fill rate
30.00
25.20
Memory type
GDDR5
DDR3
Maximum RAM amount
1 GB
2 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
3600 MHz
2000 MHz
Memory bandwidth
115.2 GB/s
32 GB/s
Display Connectors
2x DVI, 1x S-Video
1x DVI, 1x HDMI, 1x VGA
HDMI
-
+
DirectX
10.1 (10_1)
12 (11_1)
OpenCL
1.1
1.2
OpenGL
3.3
4.6
Shader Model
4.1
5.1
Vulkan
N/A
1.2.131