Radeon HD 7870 and Radeon R7 450 OEM - video card comparison
Radeon HD 7870
Radeon R7 450 OEM
Architecture
GCN (2011−2017)
GCN 1.0 (2012−2020)
GPU code name
Pitcairn XT
Cape Verde
Market segment
Desktop
Desktop
Release date
March 2012
June 2016
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 6-pin
None
Core clock speed
1000 MHz
925 MHz
Floating-point performance
-
947.2 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2800 Million
1,500 million
Pipelines / CUDA cores
1280
512
Power consumption (TDP)
175 Watt
65 Watt
Texture fill rate
80.00
29.60
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
2 GB
Memory bus width
256 Bit
128 Bit
Memory clock speed
4800 MHz
4.5 GB/s
Memory bandwidth
153.6 GB/s
72 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
1x DVI, 1x HDMI 1.4a, 1x DisplayPort 1.2
Eyefinity
+
-
HDMI
+
+
DirectX
12 (11_1)
12 (11_1)
OpenCL
1.2
2.1 (1.2)
OpenGL
4.6
4.6
Shader Model
5.1
6.5 (5.1)
Vulkan
1.2.131
1.2.170