Radeon HD 6850 X2 vs Radeon HD 7870

When comparing Radeon HD 6850 X2 and Radeon HD 7870, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between Radeon HD 6850 X2 and Radeon HD 7870 is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Main Specs

  Radeon HD 6850 X2 Radeon HD 7870
Power consumption (TDP) 254 Watt 175 Watt
Interface PCIe 2.0 x16
Supplementary power connectors 2x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon HD 6850 X2 has 45% more power consumption, than Radeon HD 7870.
  • Radeon HD 6850 X2 and Radeon HD 7870 have maximum RAM of 2 GB.
  • Both cards are used in Desktops.
  • Radeon HD 6850 X2 is build with TeraScale 2 architecture, and Radeon HD 7870 - with GCN.
  • Core clock speed of Radeon HD 7870 is 200 MHz higher, than Radeon HD 6850 X2.
  • Radeon HD 6850 X2 is manufactured by 40 nm process technology, and Radeon HD 7870 - by 28 nm process technology.
  • Memory clock speed of Radeon HD 7870 is 600 MHz higher, than Radeon HD 6850 X2.

Game benchmarks

high / 1080p 12−14 24−27
ultra / 1080p 7−8 14−16
QHD / 1440p 2−3 9−10
4K / 2160p 6−7
low / 720p 27−30 45−50
medium / 1080p 16−18 30−33
The average gaming FPS of Radeon HD 7870 in Assassin's Creed Odyssey is 92% more, than Radeon HD 6850 X2.

Full Specs

  Radeon HD 6850 X2 Radeon HD 7870
Architecture TeraScale 2 GCN
Code name Barts Pitcairn XT
Type Desktop Desktop
Release date 19 September 2011 5 March 2012
Pipelines 960 1280
Core clock speed 800 MHz 1000 MHz
Transistor count 1,700 million 2800 Million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 38.40
Floating-point performance 2x 1,536.0 gflops
Memory bus width 256 Bit 256 Bit
Memory clock speed 4200 MHz 4800 MHz
Memory bandwidth 134.4 GB/s
Shared memory -
DirectX 11.2 (11_0) DirectX 11.1, Shader 5.1
Shader Model 5.0
OpenGL 4.4
OpenCL 1.2
Vulkan N/A
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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