Radeon HD 7870 vs Radeon R7 A265

In this comparison between Radeon HD 7870 and Radeon R7 A265 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people Radeon HD 7870 will be the best choice, for others Radeon R7 A265 will be their preference. Study the comparison tables below and make your choice.

Main Specs

  Radeon HD 7870 Radeon R7 A265
Power consumption (TDP) 175 Watt
Interface PCIe 3.0 x8
Memory type GDDR5 DDR3
Maximum RAM amount 2 GB 2 GB
Display Connectors No outputs
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  • Radeon HD 7870 and Radeon R7 A265 have maximum RAM of 2 GB.
  • Both cards are used in Desktops.
  • Radeon HD 7870 is build with GCN architecture, and Radeon R7 A265 - with GCN 1.0.
  • Core clock speed of Radeon HD 7870 is 275 MHz higher, than Radeon R7 A265.
  • Radeon HD 7870 and Radeon R7 A265 are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon HD 7870 is 3000 MHz higher, than Radeon R7 A265.

Game benchmarks

high / 1080p 24−27 1−2
ultra / 1080p 14−16 0−1
QHD / 1440p 9−10 0−1
4K / 2160p 6−7
low / 720p 45−50 12−14
medium / 1080p 30−33 3−4
The average gaming FPS of Radeon HD 7870 in Assassin's Creed Odyssey is 466% more, than Radeon R7 A265.

Full Specs

  Radeon HD 7870 Radeon R7 A265
Architecture GCN GCN 1.0
Code name Pitcairn XT Opal
Type Desktop Desktop
Release date 5 March 2012 9 January 2014
Pipelines 1280 384
Core clock speed 1000 MHz 725 MHz
Boost Clock 825 MHz
Transistor count 2800 Million 950 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 19.80
Floating-point performance 633.6 gflops
Memory bus width 256 Bit 128 Bit
Memory clock speed 4800 MHz 1800 MHz
Memory bandwidth 28.8 GB/s
Shared memory -
DirectX DirectX 11.1, Shader 5.1 12 (11_1)
Shader Model 5.1
OpenGL 4.6
OpenCL 1.2
Vulkan 1.2.131
Monero / XMR (CryptoNight) 0.39 kh/s
Eyefinity +
Decred / DCR (Decred) 0.63 Gh/s
Ethereum / ETH (DaggerHashimoto) 16.6 Mh/s
Zcash / ZEC (Equihash) 145 Sol/s
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