GeForce GT 640 vs Radeon RX 550

Find out if it is worth upgrading your current GPU setup by comparing GeForce GT 640 and Radeon RX 550. 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 GeForce GT 640 and Radeon RX 550. 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.

Main Specs

  GeForce GT 640 Radeon RX 550
Power consumption (TDP) 65 Watt 50 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x8
Supplementary power connectors None None
Memory type DDR3 GDDR5
Maximum RAM amount 2 GB 4 GB
Display Connectors 1x DVI, 1x HDMI, 1x DisplayPort 1x DVI, 1x HDMI, 1x DisplayPort
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  • GeForce GT 640 has 30% more power consumption, than Radeon RX 550.
  • GeForce GT 640 is connected by PCIe 3.0 x16, and Radeon RX 550 uses PCIe 3.0 x8 interface.
  • Radeon RX 550 has 2 GB more memory, than GeForce GT 640.
  • Both cards are used in Desktops.
  • GeForce GT 640 is build with Kepler architecture, and Radeon RX 550 - with GCN 4.0.
  • Core clock speed of Radeon RX 550 is 198 MHz higher, than GeForce GT 640.
  • GeForce GT 640 is manufactured by 28 nm process technology, and Radeon RX 550 - by 14 nm process technology.
  • Both graphics cards are the same length of 145 mm.
  • Memory clock speed of Radeon RX 550 is 5218 MHz higher, than GeForce GT 640.

Game benchmarks

high / 1080p 2−3 14−16
ultra / 1080p 1−2 8−9
QHD / 1440p 0−1 3−4
low / 720p 14−16 30−33
medium / 1080p 5−6 18−20
The average gaming FPS of Radeon RX 550 in Assassin's Creed Odyssey is 200% more, than GeForce GT 640.

Full Specs

  GeForce GT 640 Radeon RX 550
Architecture Kepler GCN 4.0
Code name GK107 Lexa
Type Desktop Desktop
Release date 5 June 2012 20 April 2017
Pipelines 384 512
Core clock speed 902 MHz 1100 MHz
Boost Clock 1183 MHz
Transistor count 1,270 million 2,200 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 28.86 37.86
Floating-point performance 692.7 gflops 1,211 gflops
Length 145 mm 145 mm
Memory bus width 128 Bit 128 Bit
Memory clock speed 1782 MHz 7000 MHz
Memory bandwidth 28.51 GB/s 112.0 GB/s
DirectX 12 (11_0) 12 (12_0)
Shader Model 5.1 6.4
OpenGL 4.6 4.6
OpenCL 1.2 2.0
Vulkan 1.1.126 1.2.131
CUDA 3.0
Bitcoin / BTC (SHA256) 24 Mh/s
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