Radeon HD 4770 vs Radeon HD 7870M

Find out if it is worth upgrading your current GPU setup by comparing Radeon HD 4770 and Radeon HD 7870M. Here you can take a closer look at graphics cards specs, such as core clock speed, memory type and size, display connectors, etc. The price, overall benchmark and gaming performances are usually defining factors when it comes to choosing between Radeon HD 4770 and Radeon HD 7870M. Make sure that the graphics card has compatible dimensions and will properly fit in your new or current computer case. Also these graphics cards may have different system power recommendations, so take that into consideration and upgrade your PSU if necessary.

Radeon HD 7870M is a Laptop Graphics Card

Note: Radeon HD 7870M 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 7870M here:

Main Specs

  Radeon HD 4770 Radeon HD 7870M
Power consumption (TDP) 80 Watt 45 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x16
Supplementary power connectors 1x 6-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 512 MB 2 GB
Display Connectors 2x DVI, 1x S-Video No outputs
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  • Radeon HD 4770 has 77% more power consumption, than Radeon HD 7870M.
  • Radeon HD 4770 is connected by PCIe 2.0 x16, and Radeon HD 7870M uses PCIe 3.0 x16 interface.
  • Radeon HD 4770 has 510 GB more memory, than Radeon HD 7870M.
  • Radeon HD 4770 is used in Desktops, and Radeon HD 7870M - in Laptops.
  • Radeon HD 4770 is build with TeraScale architecture, and Radeon HD 7870M - with GCN.
  • Core clock speed of Radeon HD 7870M is 50 MHz higher, than Radeon HD 4770.
  • Radeon HD 4770 is manufactured by 40 nm process technology, and Radeon HD 7870M - by 28 nm process technology.
  • Memory clock speed of Radeon HD 7870M is 800 MHz higher, than Radeon HD 4770.

Game benchmarks

high / 1080p 1−2 6−7
ultra / 1080p 0−1 4−5
QHD / 1440p 0−1 0−1
low / 720p 10−12 16−18
medium / 1080p 2−3 8−9
The average gaming FPS of Radeon HD 7870M in Assassin's Creed Odyssey is 100% more, than Radeon HD 4770.

Full Specs

  Radeon HD 4770 Radeon HD 7870M
Architecture TeraScale GCN
Code name RV740 Heathrow XT
Type Desktop Laptop
Release date 28 April 2009 24 April 2012
Pipelines 640 640
Core clock speed 750 MHz 800 MHz
Transistor count 826 million 1,500 million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 24.00 32.00
Floating-point performance 960.0 gflops 1,024 gflops
Length 203 mm
Memory bus width 128 Bit 128 Bit
Memory clock speed 3200 MHz 4000 MHz
Memory bandwidth 51.2 GB/s 64 GB/s
Shared memory -
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
Laptop size large
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