Radeon Pro 455 vs Radeon R9 390X

When comparing Radeon Pro 455 and Radeon R9 390X, 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 Radeon Pro 455 and Radeon R9 390X is the price. Does the additional cost justify the performance hit? Our comparison should help you make the right decision.

Radeon Pro 455 is a Laptop Graphics Card

Note: Radeon Pro 455 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 Pro 455 here:

Main Specs

  Radeon Pro 455 Radeon R9 390X
Power consumption (TDP) 35 Watt 275 Watt
Interface PCIe 3.0 x8 PCIe 3.0 x16
Supplementary power connectors None 1 x 6-pin, 1 x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 2 GB
Display Connectors No outputs 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon R9 390X has 685% more power consumption, than Radeon Pro 455.
  • Radeon Pro 455 is connected by PCIe 3.0 x8, and Radeon R9 390X uses PCIe 3.0 x16 interface.
  • Radeon Pro 455 is used in Mobile workstations, and Radeon R9 390X - in Desktops.
  • Radeon Pro 455 is build with Polaris architecture, and Radeon R9 390X - with GCN.
  • Radeon Pro 455 is manufactured by 14 nm process technology, and Radeon R9 390X - by 28 nm process technology.
  • Memory clock speed of Radeon Pro 455 is 3950 MHz higher, than Radeon R9 390X.

Game benchmarks

high / 1080p 16−18 50−55
ultra / 1080p 9−10 30−35
QHD / 1440p 4−5 24−27
4K / 2160p 4−5 14−16
low / 720p 30−35 75−80
medium / 1080p 20−22 55−60
The average gaming FPS of Radeon R9 390X in Assassin's Creed Odyssey is 207% more, than Radeon Pro 455.

Full Specs

  Radeon Pro 455 Radeon R9 390X
Architecture Polaris GCN
Code name Polaris 11 Grenada XT
Type Mobile workstation Desktop
Release date 27 October 2016 16 June 2015
Pipelines 768 2816
Core clock speed 855 MHz
Boost Clock 1050 MHz
Transistor count 3,000 million 6,200 million
Manufacturing process technology 14 nm 28 nm
Texture fill rate 41.04 184.8
Floating-point performance 1,313 gflops 5,914 gflops
Length 275 mm
Memory bus width 128 Bit 512 Bit
Memory clock speed 5000 MHz 1050 MHz
Memory bandwidth 81.28 GB/s 384 GB/s
Shared memory - -
DirectX 12 (12_0)
Shader Model 6.4 6.3
OpenGL 4.6 4.6
OpenCL 2.0 2.0
Vulkan 1.2.131 +
FreeSync + +
Bus support PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 163 Mh/s 684 Mh/s
Laptop size large
Eyefinity +
PowerTune +
TrueAudio +
Mantle +
Design reference
Bridgeless CrossFire +
Number of Eyefinity displays 6
DisplayPort support +
CrossFire +
VCE +
DDMA audio +
Ethereum / ETH (DaggerHashimoto) 27.5 Mh/s
High bandwidth memory (HBM) -
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