Radeon HD 4770 vs Radeon R7 M340

Find out if it is worth upgrading your current GPU setup by comparing Radeon HD 4770 and Radeon R7 M340. 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 R7 M340. 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 R7 M340 is a Laptop Graphics Card

Note: Radeon R7 M340 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 R7 M340 here:

Main Specs

  Radeon HD 4770 Radeon R7 M340
Power consumption (TDP) 80 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x8
Supplementary power connectors 1x 6-pin None
Memory type GDDR5 DDR3
Maximum RAM amount 512 MB 4 GB
Display Connectors 2x DVI, 1x S-Video No outputs
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  • Radeon HD 4770 is connected by PCIe 2.0 x16, and Radeon R7 M340 uses PCIe 3.0 x8 interface.
  • Radeon HD 4770 has 508 GB more memory, than Radeon R7 M340.
  • Radeon HD 4770 is used in Desktops, and Radeon R7 M340 - in Laptops.
  • Radeon HD 4770 is build with TeraScale architecture, and Radeon R7 M340 - with GCN.
  • Core clock speed of Radeon R7 M340 is 271 MHz higher, than Radeon HD 4770.
  • Radeon HD 4770 is manufactured by 40 nm process technology, and Radeon R7 M340 - by 28 nm process technology.
  • Memory clock speed of Radeon HD 4770 is 2200 MHz higher, than Radeon R7 M340.

Game benchmarks

high / 1080p 1−2 0−1
ultra / 1080p 0−1
QHD / 1440p 0−1 0−1
low / 720p 10−12 1−2
medium / 1080p 2−3 0−1
The average gaming FPS of Radeon HD 4770 in Assassin's Creed Odyssey is 1000% more, than Radeon R7 M340.

Full Specs

  Radeon HD 4770 Radeon R7 M340
Architecture TeraScale GCN
Code name RV740 Meso Pro DDR3
Type Desktop Laptop
Release date 28 April 2009 16 June 2015
Pipelines 640 320
Core clock speed 750 MHz 1021 MHz
Boost Clock 1021 MHz
Transistor count 826 million 950 million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 24.00 17.16
Floating-point performance 960.0 gflops 549.1 gflops
Length 203 mm
Memory bus width 128 Bit 128 Bit
Memory clock speed 3200 MHz 1000 MHz
Memory bandwidth 51.2 GB/s 16 GB/s
Shared memory -
DirectX 10.1 (10_1)
Shader Model 4.1 5.1
OpenGL 3.3 4.4
OpenCL 1.1 Not Listed
Vulkan N/A +
FreeSync +
Bus support PCIe 3.0
Bitcoin / BTC (SHA256) 74 Mh/s
Eyefinity +
HD3D +
PowerTune +
DualGraphics +
ZeroCore +
Switchable graphics +
Mantle +
Compute units 6
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