Radeon HD 7990 vs Radeon RX 550 mobile

If you are going to buy a new graphics card and are choosing between Radeon HD 7990 and Radeon RX 550 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 HD 7990 stacks up against Radeon RX 550 mobile, check out specs charts below.

Radeon RX 550 mobile is a Laptop Graphics Card

Note: Radeon RX 550 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 550 mobile here:

Main Specs

  Radeon HD 7990 Radeon RX 550 mobile
Power consumption (TDP) 375 Watt 50 Watt
Interface PCIe 3.0 x16 PCIe 3.0 x8
Supplementary power connectors 2x 8-pin
Memory type GDDR5 GDDR5
Maximum RAM amount 3 GB 4 GB
Display Connectors 1x DVI, 4x mini-DisplayPort No outputs
  Check Price Check Price
  • Radeon HD 7990 has 650% more power consumption, than Radeon RX 550 mobile.
  • Radeon HD 7990 is connected by PCIe 3.0 x16, and Radeon RX 550 mobile uses PCIe 3.0 x8 interface.
  • Radeon RX 550 mobile has 1 GB more memory, than Radeon HD 7990.
  • Radeon HD 7990 is used in Desktops, and Radeon RX 550 mobile - in Laptops.
  • Radeon HD 7990 is build with GCN 1.0 architecture, and Radeon RX 550 mobile - with Polaris.
  • Core clock speed of Radeon RX 550 mobile is 337 MHz higher, than Radeon HD 7990.
  • Radeon HD 7990 is manufactured by 28 nm process technology, and Radeon RX 550 mobile - by 14 nm process technology.
  • Memory clock speed of Radeon HD 7990 and Radeon RX 550 mobile is 6000 MHz.

Game benchmarks

high / 1080p 35−40 18−20
ultra / 1080p 21−24 10−12
QHD / 1440p 16−18 5−6
4K / 2160p 10−11 4−5
low / 720p 60−65 35−40
medium / 1080p 40−45 24−27
The average gaming FPS of Radeon HD 7990 in Assassin's Creed Odyssey is 88% more, than Radeon RX 550 mobile.

Full Specs

  Radeon HD 7990 Radeon RX 550 mobile
Architecture GCN 1.0 Polaris
Code name Malta Polaris 12
Type Desktop Laptop
Release date 24 April 2013 21 March 2017
Pipelines 2048 640
Core clock speed 950 MHz 1287 MHz
Boost Clock 1000 MHz 1476 MHz
Transistor count 4,313 million 2,200 million
Manufacturing process technology 28 nm 14 nm
Texture fill rate 128.0 51.48
Floating-point performance 2x 4,096 gflops 1,647 gflops
Length 307 mm
Memory bus width 384 Bit 128 Bit
Memory clock speed 6000 MHz 6000 MHz
Memory bandwidth 288.0 GB/s 96 GB/s
Shared memory -
DirectX 12 (11_1) 12 (12_0)
Shader Model 5.1 6.4
OpenGL 4.6 4.6
OpenCL 1.2 2.0
Vulkan 1.2.131 1.2.131
FreeSync +
Bitcoin / BTC (SHA256) 459 Mh/s
Laptop size large
Ethereum / ETH (DaggerHashimoto) 44 Mh/s
  Check Price Check Price