Quadro K620M vs Radeon HD 4870

If you are going to buy a new graphics card and are choosing between Quadro K620M and Radeon HD 4870, there are a couple of things to consider. Cards with more VRAM in general perform better and allow you to play on higher graphics settings. Size also makes a difference. A model with a large heatsink can occupy up to three expansion slots on a motherboard. Be sure you have enough room in your PC case. When comparing GPUs with different architectures, more processing cores and even higher TFLOPS will not always translate to better performance. To help you decide which GPU you need, we have measured frame rates in a number of popular games. For more on how the Quadro K620M stacks up against Radeon HD 4870, check out specs charts below.

Quadro K620M is a Laptop Graphics Card

Note: Quadro K620M 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 Quadro K620M here:

Main Specs

  Quadro K620M Radeon HD 4870
Power consumption (TDP) 30 Watt 150 Watt
Interface MXM-A (3.0) PCIe 2.0 x16
Supplementary power connectors None 2x 6-pin
Memory type DDR3 GDDR5
Maximum RAM amount 2 GB 1 GB
Display Connectors No outputs 2x DVI, 1x S-Video
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  • Radeon HD 4870 has 400% more power consumption, than Quadro K620M.
  • Quadro K620M is connected by MXM-A (3.0), and Radeon HD 4870 uses PCIe 2.0 x16 interface.
  • Quadro K620M has 1 GB more memory, than Radeon HD 4870.
  • Quadro K620M is used in Mobile workstations, and Radeon HD 4870 - in Desktops.
  • Quadro K620M is build with Maxwell architecture, and Radeon HD 4870 - with TeraScale.
  • Core clock speed of Quadro K620M is 279 MHz higher, than Radeon HD 4870.
  • Quadro K620M is manufactured by 28 nm process technology, and Radeon HD 4870 - by 55 nm process technology.
  • Memory clock speed of Radeon HD 4870 is 1600 MHz higher, than Quadro K620M.

Game benchmarks

high / 1080p 3−4 3−4
ultra / 1080p 1−2 1−2
QHD / 1440p 0−1 0−1
low / 720p 14−16 14−16
medium / 1080p 5−6 6−7
Quadro K620M and Radeon HD 4870 have the same average FPS in Assassin's Creed Odyssey.

Full Specs

  Quadro K620M Radeon HD 4870
Architecture Maxwell TeraScale
Code name GM108 RV770
Type Mobile workstation Desktop
Release date 1 March 2015 25 June 2008
Pipelines 384 800
Core clock speed 1029 MHz 750 MHz
Boost Clock 1124 MHz
Transistor count 956 million
Manufacturing process technology 28 nm 55 nm
Texture fill rate 17.98 30.00
Floating-point performance 863.2 gflops 1,200.0 gflops
Length 250 mm
Memory bus width 64 Bit 256 Bit
Memory clock speed 2000 MHz 3600 MHz
Memory bandwidth 14.4 GB/s 115.2 GB/s
Shared memory -
DirectX 12 10.1 (10_1)
Shader Model 5 4.1
OpenGL 4.5 3.3
OpenCL 1.2 1.1
Vulkan 1.1.126 N/A
CUDA +
Bitcoin / BTC (SHA256) 92 Mh/s
Optimus +
Display Port 1.2
nView Display Management +
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