Radeon HD 4870 vs Radeon R7 A265

In this comparison between Radeon HD 4870 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 4870 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 4870 Radeon R7 A265
Power consumption (TDP) 150 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x8
Supplementary power connectors 2x 6-pin
Memory type GDDR5 DDR3
Maximum RAM amount 1 GB 2 GB
Display Connectors 2x DVI, 1x S-Video No outputs
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  • Radeon HD 4870 is connected by PCIe 2.0 x16, and Radeon R7 A265 uses PCIe 3.0 x8 interface.
  • Radeon R7 A265 has 1 GB more memory, than Radeon HD 4870.
  • Both cards are used in Desktops.
  • Radeon HD 4870 is build with TeraScale architecture, and Radeon R7 A265 - with GCN 1.0.
  • Core clock speed of Radeon HD 4870 is 25 MHz higher, than Radeon R7 A265.
  • Radeon HD 4870 is manufactured by 55 nm process technology, and Radeon R7 A265 - by 28 nm process technology.
  • Memory clock speed of Radeon HD 4870 is 1800 MHz higher, than Radeon R7 A265.

Game benchmarks

high / 1080p 3−4 1−2
ultra / 1080p 1−2 0−1
QHD / 1440p 0−1 0−1
low / 720p 14−16 12−14
medium / 1080p 6−7 3−4
The average gaming FPS of Radeon HD 4870 in Assassin's Creed Odyssey is 33% more, than Radeon R7 A265.

Full Specs

  Radeon HD 4870 Radeon R7 A265
Architecture TeraScale GCN 1.0
Code name RV770 Opal
Type Desktop Desktop
Release date 25 June 2008 9 January 2014
Pipelines 800 384
Core clock speed 750 MHz 725 MHz
Boost Clock 825 MHz
Transistor count 956 million 950 million
Manufacturing process technology 55 nm 28 nm
Texture fill rate 30.00 19.80
Floating-point performance 1,200.0 gflops 633.6 gflops
Length 250 mm
Memory bus width 256 Bit 128 Bit
Memory clock speed 3600 MHz 1800 MHz
Memory bandwidth 115.2 GB/s 28.8 GB/s
DirectX 10.1 (10_1) 12 (11_1)
Shader Model 4.1 5.1
OpenGL 3.3 4.6
OpenCL 1.1 1.2
Vulkan N/A 1.2.131
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