GeForce GT 640 vs Radeon HD 4770

In this comparison between GeForce GT 640 and Radeon HD 4770 you will find out which graphics card performs better in today's games. Bear in mind that third-party versions may have more efficient cooling and higher clock speeds. This will increase cards' performance, though not by much. In addition to raw power you should also take into account the dimensions. Thicker models simply will not fit into a small mini-ITX case. The resolution of your monitor also affects the choice, since 4K gameplay requires a more powerful GPU. And don't overspend on the graphics card. Other parts of your build may also need to be upgraded, save some money for the CPU or power supply. For some people GeForce GT 640 will be the best choice, for others Radeon HD 4770 will be their preference. Study the comparison tables below and make your choice.

Main Specs

  GeForce GT 640 Radeon HD 4770
Power consumption (TDP) 65 Watt 80 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x16
Supplementary power connectors None 1x 6-pin
Memory type DDR3 GDDR5
Maximum RAM amount 2 GB 512 MB
Display Connectors 1x DVI, 1x HDMI, 1x DisplayPort 2x DVI, 1x S-Video
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  • Radeon HD 4770 has 23% more power consumption, than GeForce GT 640.
  • GeForce GT 640 is connected by PCIe 3.0 x16, and Radeon HD 4770 uses PCIe 2.0 x16 interface.
  • Radeon HD 4770 has 510 GB more memory, than GeForce GT 640.
  • Both cards are used in Desktops.
  • GeForce GT 640 is build with Kepler architecture, and Radeon HD 4770 - with TeraScale.
  • Core clock speed of GeForce GT 640 is 152 MHz higher, than Radeon HD 4770.
  • GeForce GT 640 is manufactured by 28 nm process technology, and Radeon HD 4770 - by 40 nm process technology.
  • Radeon HD 4770 is 58 mm longer, than GeForce GT 640.
  • Memory clock speed of Radeon HD 4770 is 1418 MHz higher, than GeForce GT 640.

Game benchmarks

high / 1080p 2−3 1−2
ultra / 1080p 1−2 0−1
QHD / 1440p 0−1 0−1
low / 720p 14−16 10−12
medium / 1080p 5−6 2−3
The average gaming FPS of GeForce GT 640 in Assassin's Creed Odyssey is 40% more, than Radeon HD 4770.

Full Specs

  GeForce GT 640 Radeon HD 4770
Architecture Kepler TeraScale
Code name GK107 RV740
Type Desktop Desktop
Release date 5 June 2012 28 April 2009
Pipelines 384 640
Core clock speed 902 MHz 750 MHz
Transistor count 1,270 million 826 million
Manufacturing process technology 28 nm 40 nm
Texture fill rate 28.86 24.00
Floating-point performance 692.7 gflops 960.0 gflops
Length 145 mm 203 mm
Memory bus width 128 Bit 128 Bit
Memory clock speed 1782 MHz 3200 MHz
Memory bandwidth 28.51 GB/s 51.2 GB/s
DirectX 12 (11_0) 10.1 (10_1)
Shader Model 5.1 4.1
OpenGL 4.6 3.3
OpenCL 1.2 1.1
Vulkan 1.1.126 N/A
CUDA 3.0
Bitcoin / BTC (SHA256) 24 Mh/s
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