Radeon HD 7870 vs Radeon R9 280

If you are going to buy a new graphics card and are choosing between Radeon HD 7870 and Radeon R9 280, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Radeon HD 7870 stacks up against Radeon R9 280, check out specs charts below.

Main Specs

  Radeon HD 7870 Radeon R9 280
Power consumption (TDP) 175 Watt 200 Watt
Interface PCIe 3.0 x16
Supplementary power connectors 1 x 6-pin + 1 x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 3 GB
Display Connectors 2x DVI, 1x HDMI, 2x mini-DisplayPort
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  • Radeon R9 280 has 14% more power consumption, than Radeon HD 7870.
  • Radeon R9 280 has 1 GB more memory, than Radeon HD 7870.
  • Both cards are used in Desktops.
  • Radeon HD 7870 is build with GCN architecture, and Radeon R9 280 - with GCN 1.0.
  • Radeon HD 7870 and Radeon R9 280 are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon HD 7870 is 3550 MHz higher, than Radeon R9 280.

Game benchmarks

high / 1080p 24−27 35−40
ultra / 1080p 14−16 21−24
QHD / 1440p 9−10 16−18
4K / 2160p 6−7 10−11
low / 720p 45−50 60−65
medium / 1080p 30−33 40−45
The average gaming FPS of Radeon R9 280 in Assassin's Creed Odyssey is 45% more, than Radeon HD 7870.

Full Specs

  Radeon HD 7870 Radeon R9 280
Architecture GCN GCN 1.0
Code name Pitcairn XT Tahiti
Type Desktop Desktop
Release date 5 March 2012 4 March 2014
Pipelines 1280 1792
Core clock speed 1000 MHz
Boost Clock 933 MHz
Transistor count 2800 Million 4,313 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 104.5
Floating-point performance 3,344 gflops
Length 275 mm
Memory bus width 256 Bit 384 Bit
Memory clock speed 4800 MHz 1250 MHz
Memory bandwidth 240 GB/s
Shared memory -
DirectX DirectX 11.1, Shader 5.1
Shader Model 5.1
OpenGL 4.6
OpenCL 1.2
Vulkan +
Monero / XMR (CryptoNight) 0.39 kh/s
FreeSync +
Bus support PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 408 Mh/s
Eyefinity + +
HD3D +
TrueAudio +
Design reference
CrossFire +
DDMA audio +
Decred / DCR (Decred) 0.63 Gh/s
Ethereum / ETH (DaggerHashimoto) 16.6 Mh/s 21.5 Mh/s
Zcash / ZEC (Equihash) 145 Sol/s
LiquidVR +
TressFX +
UVD +
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