Radeon HD 7870 and Radeon R9 390X2 - video card comparison
Radeon HD 7870
Radeon R9 390X2
Architecture
GCN (2011−2017)
GCN (2011−2017)
GPU code name
Pitcairn XT
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Market segment
Desktop
Desktop
Release date
March 2012
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Interface
PCIe 3.0 x16
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Supplementary power connectors
2x 6-pin
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Boost clock speed
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1000 MHz
Core clock speed
1000 MHz
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Manufacturing process technology
28 nm
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Number of transistors
2800 Million
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Pipelines / CUDA cores
1280
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Power consumption (TDP)
175 Watt
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Texture fill rate
80.00
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Memory type
GDDR5
512
Maximum RAM amount
2 GB
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Memory bus width
256 Bit
5400 Bit
Memory clock speed
4800 MHz
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Memory bandwidth
153.6 GB/s
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Shared memory
-
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Display Connectors
1x DVI, 1x HDMI, 2x mini-DisplayPort
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Eyefinity
+
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HDMI
+
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DirectX
12 (11_1)
GDDR5
OpenCL
1.2
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OpenGL
4.6
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Shader Model
5.1
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Vulkan
1.2.131
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