Radeon HD 7870 XT vs Radeon HD 8770M

When choosing between Radeon HD 7870 XT and Radeon HD 8770M, it is worth examining the specifications of the models in detail. Do they meet the recommended requirements of modern games and software? Storage capacity, form factor, TDP, available ports, warranty and manufacturer support are all important. For example, the size of a PC case can limit the maximum thickness and length of the card. Often, instead of the factory overclocked card and RGB backlight, it is better to choose a reference model with a more efficient GPU. And make sure that your current power supply unit has the correct connection pins (using adapters is not recommended). This GPUs compare tool is meant to help you to choose the best graphics card for your build. Let's find out the difference between Radeon HD 7870 XT and Radeon HD 8770M.

Radeon HD 8770M is a Laptop Graphics Card

Note: Radeon HD 8770M is only used in laptop graphics. It has lower GPU clock speed compared to the desktop variant, which results in lower power consumption, but also 10-30% lower gaming performance. Check available laptop models with Radeon HD 8770M here:

Main Specs

  Radeon HD 7870 XT Radeon HD 8770M
Power consumption (TDP) 185 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x8
Supplementary power connectors 2x 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB 2 GB
Display Connectors 1x DVI, 1x HDMI, 2x mini-DisplayPort No outputs
  Check Price
  • Radeon HD 7870 XT is connected by PCIe 3.0 x16, and Radeon HD 8770M uses PCIe 3.0 x8 interface.
  • Radeon HD 7870 XT and Radeon HD 8770M have maximum RAM of 2 GB.
  • Radeon HD 7870 XT is used in Desktops, and Radeon HD 8770M - in Laptops.
  • Radeon HD 7870 XT is build with GCN 1.0 architecture, and Radeon HD 8770M - with GCN.
  • Core clock speed of Radeon HD 7870 XT is 150 MHz higher, than Radeon HD 8770M.
  • Radeon HD 7870 XT and Radeon HD 8770M are manufactured by 28 nm process technology.
  • Memory clock speed of Radeon HD 7870 XT is 1500 MHz higher, than Radeon HD 8770M.

Game benchmarks

high / 1080p 35−40 7−8
ultra / 1080p 21−24 4−5
QHD / 1440p 16−18 0−1
4K / 2160p 10−11
low / 720p 60−65 16−18
medium / 1080p 40−45 8−9
The average gaming FPS of Radeon HD 7870 XT in Assassin's Creed Odyssey is 355% more, than Radeon HD 8770M.

Full Specs

  Radeon HD 7870 XT Radeon HD 8770M
Architecture GCN 1.0 GCN
Code name Tahiti Mars
Type Desktop Laptop
Release date 19 November 2012 16 November 2012
Pipelines 1536 384
Core clock speed 925 MHz 775 MHz
Boost Clock 975 MHz 825 MHz
Transistor count 4,313 million 950 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 93.60 19.80
Floating-point performance 2,995 gflops 633.6 gflops
Length 267 mm
Memory bus width 256 Bit 128 Bit
Memory clock speed 6000 MHz 4500 MHz
Memory bandwidth 192.0 GB/s 72 GB/s
Shared memory -
DirectX 12 (11_1) 12 (11_1)
Shader Model 5.1 5.1
OpenGL 4.6 4.6
OpenCL 1.2 1.2
Vulkan 1.2.131 1.2.131
Bitcoin / BTC (SHA256) 346 Mh/s
Laptop size medium sized
Ethereum / ETH (DaggerHashimoto) 14.5 Mh/s
  Check Price