Quadro P400 vs Radeon HD 6850M

When comparing Quadro P400 and Radeon HD 6850M, we look primarily at benchmarks and game tests. But it is not only about the numbers. Often you can find third-party models with higher clock speeds, better cooling, or a customizable RGB lighting. Not all of them will have all the features you need. Another thing to consider is the port selection. Most graphics cards have at least one DisplayPort and HDMI interface, but some monitors require DVI. Before you buy, check the TDP of the graphics card - this characteristic will help you estimate the consumption of the graphics card. You may even have to upgrade your PSU to meet its requirements. An important factor when choosing between Quadro P400 and Radeon HD 6850M is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Radeon HD 6850M is a Laptop Graphics Card

Note: Radeon HD 6850M 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 6850M here:

Main Specs

  Quadro P400 Radeon HD 6850M
Power consumption (TDP) 30 Watt 50 Watt
Interface PCIe 3.0 x16 PCIe 2.0 x16
Supplementary power connectors None
Memory type GDDR5 DDR3, GDDR5
Maximum RAM amount 2 GB 1 GB
Display Connectors 3x mini-DisplayPort No outputs
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  • Radeon HD 6850M has 66% more power consumption, than Quadro P400.
  • Quadro P400 is connected by PCIe 3.0 x16, and Radeon HD 6850M uses PCIe 2.0 x16 interface.
  • Quadro P400 has 1 GB more memory, than Radeon HD 6850M.
  • Quadro P400 is used in Desktops, and Radeon HD 6850M - in Laptops.
  • Quadro P400 is build with Pascal architecture, and Radeon HD 6850M - with Terascale 2.
  • Core clock speed of Quadro P400 is 653 MHz higher, than Radeon HD 6850M.
  • Quadro P400 is manufactured by 14 nm process technology, and Radeon HD 6850M - by 40 nm process technology.
  • Memory clock speed of Quadro P400 is 3208 MHz higher, than Radeon HD 6850M.

Game benchmarks

high / 1080p 7−8 2−3
ultra / 1080p 4−5 0−1
QHD / 1440p 0−1 0−1
low / 720p 18−20 12−14
medium / 1080p 9−10 3−4
The average gaming FPS of Quadro P400 in Assassin's Creed Odyssey is 100% more, than Radeon HD 6850M.

Full Specs

  Quadro P400 Radeon HD 6850M
Architecture Pascal Terascale 2
Code name GP107 Granville Pro/LP
Type Workstation Laptop
Release date 7 February 2017 6 January 2011
Pipelines 256 800
Core clock speed 1228 MHz 575 / 675 MHz
Boost Clock 1252 MHz
Transistor count 3,300 million 1,040 million
Manufacturing process technology 14 nm 40 nm
Texture fill rate 20.03 27.00
Floating-point performance 679.9 gflops 1,080.0 gflops
Length 145 mm
Memory bus width 64 Bit 128 Bit
Memory clock speed 4008 MHz 800 MHz
Memory bandwidth 32.06 GB/s 25.6 GB/s
Shared memory -
DirectX 12 (12_1) 11.2 (11_0)
Shader Model 6.4 5.0
OpenGL 4.6 4.4
OpenCL 1.2 1.2
Vulkan 1.2.131 N/A
CUDA 6.1
Laptop size large
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