Radeon HD 7870 and Radeon R9 380 OEM - video card comparison
Radeon HD 7870
Radeon R9 380 OEM
Architecture
GCN (2011−2017)
GCN 3.0 (2014−2017)
GPU code name
Pitcairn XT
Antigua
Market segment
Desktop
Desktop
Release date
March 2012
May 2015
Interface
PCIe 3.0 x16
PCIe 3.0 x16
Supplementary power connectors
2x 6-pin
2x 6-pin
Core clock speed
1000 MHz
918 MHz
Floating-point performance
-
3,290 gflops
Manufacturing process technology
28 nm
28 nm
Number of transistors
2800 Million
5,000 million
Pipelines / CUDA cores
1280
1792
Power consumption (TDP)
175 Watt
190 Watt
Texture fill rate
80.00
102.8
Memory type
GDDR5
GDDR5
Maximum RAM amount
2 GB
4 GB
Memory bus width
256 Bit
256 Bit
Memory clock speed
4800 MHz
5500 MHz
Memory bandwidth
153.6 GB/s
176.0 GB/s
Shared memory
-
-
Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
2x DVI, 1x HDMI, 1x DisplayPort
Eyefinity
+
-
HDMI
+
+
DirectX
12 (11_1)
12 (12_0)
OpenCL
1.2
2.0
OpenGL
4.6
4.6
Shader Model
5.1
6.3
Vulkan
1.2.131
1.2.131