GRID K2 vs Radeon R9 390X

Find out if it is worth upgrading your current GPU setup by comparing GRID K2 and Radeon R9 390X. 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 GRID K2 and Radeon R9 390X. 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

  GRID K2 Radeon R9 390X
Power consumption (TDP) 225 Watt 275 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x16
Supplementary power connectors 1x 8-pin 1 x 6-pin, 1 x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 4 GB
Display Connectors No outputs 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon R9 390X has 22% more power consumption, than GRID K2.
  • Both video cards are using PCIe 3.0 x16 interface connection to a motherboard.
  • Both cards are used in Desktops.
  • GRID K2 is build with Kepler architecture, and Radeon R9 390X - with GCN.
  • GRID K2 and Radeon R9 390X are manufactured by 28 nm process technology.
  • Radeon R9 390X is 8 mm longer, than GRID K2.
  • Memory clock speed of GRID K2 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 GRID K2.

Full Specs

  GRID K2 Radeon R9 390X
Architecture Kepler GCN
Code name GK104 Grenada XT
Type Workstation Desktop
Release date 11 May 2013 16 June 2015
Pipelines 1536 2816
Core clock speed 745 MHz
Boost Clock 1050 MHz
Transistor count 3,540 million 6,200 million
Manufacturing process technology 28 nm 28 nm
Texture fill rate 95.36 184.8
Floating-point performance 2x 2,289 gflops 5,914 gflops
Length 267 mm 275 mm
Memory bus width 256 Bit 512 Bit
Memory clock speed 5000 MHz 1050 MHz
Memory bandwidth 160.0 GB/s 384 GB/s
Shared memory -
DirectX 12 (11_0)
Shader Model 5.1 6.3
OpenGL 4.6 4.6
OpenCL 1.2 2.0
Vulkan 1.1.126 +
CUDA 3.0
FreeSync +
Bus support PCIe 3.0
HDMI +
Bitcoin / BTC (SHA256) 114 Mh/s 684 Mh/s
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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