Radeon R9 390X vs Radeon RX 460 mobile

If you are going to buy a new graphics card and are choosing between Radeon R9 390X and Radeon RX 460 mobile, 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 Radeon R9 390X stacks up against Radeon RX 460 mobile, check out specs charts below.

Radeon RX 460 mobile is a Laptop Graphics Card

Note: Radeon RX 460 mobile 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 RX 460 mobile here:

Main Specs

  Radeon R9 390X Radeon RX 460 mobile
Power consumption (TDP) 275 Watt 55 Watt
Interface PCIe 3.0 x16 MXM-B (3.0)
Supplementary power connectors 1 x 6-pin, 1 x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 4 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort No outputs
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  • Radeon R9 390X has 400% more power consumption, than Radeon RX 460 mobile.
  • Radeon R9 390X is connected by PCIe 3.0 x16, and Radeon RX 460 mobile uses MXM-B (3.0) interface.
  • Radeon R9 390X is used in Desktops, and Radeon RX 460 mobile - in Laptops.
  • Radeon R9 390X is build with GCN architecture, and Radeon RX 460 mobile - with Polaris.
  • Radeon R9 390X is manufactured by 28 nm process technology, and Radeon RX 460 mobile - by 14 nm process technology.
  • Memory clock speed of Radeon RX 460 mobile is 4950 MHz higher, than Radeon R9 390X.

Game benchmarks

high / 1080p 50−55 16−18
ultra / 1080p 30−35 9−10
QHD / 1440p 24−27 3−4
4K / 2160p 14−16
low / 720p 75−80 30−35
medium / 1080p 55−60 21−24
The average gaming FPS of Radeon R9 390X in Assassin's Creed Odyssey is 188% more, than Radeon RX 460 mobile.

Full Specs

  Radeon R9 390X Radeon RX 460 mobile
Architecture GCN Polaris
Code name Grenada XT Polaris 11 / Baffin XT
Type Desktop Laptop
Release date 16 June 2015 8 August 2016
Pipelines 2816 896
Boost Clock 1050 MHz 1180 MHz
Transistor count 6,200 million 3,000 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 184.8 66.08
Floating-point performance 5,914 gflops 2,115 gflops
Length 275 mm
Memory bus width 512 Bit 128 Bit
Memory clock speed 1050 MHz 6000 MHz
Memory bandwidth 384 GB/s 80 GB/s
Shared memory - -
DirectX 12 (12_0)
Shader Model 6.3 6.4
OpenGL 4.6 4.6
OpenCL 2.0 2.0
Vulkan + 1.2.131
FreeSync + +
Bus support PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 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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