Radeon HD 6790 vs UHD Graphics 615

If you are going to buy a new graphics card and are choosing between Radeon HD 6790 and UHD Graphics 615, 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 6790 stacks up against UHD Graphics 615, check out specs charts below.

UHD Graphics 615 is a Laptop Graphics Card

Note: UHD Graphics 615 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 UHD Graphics 615 here:

Main Specs

  Radeon HD 6790 UHD Graphics 615
Power consumption (TDP) 150 Watt 15 Watt
Interface PCIe 2.0 x16 PCIe 3.0 x1
Supplementary power connectors 2x 6-pin
Memory type GDDR5 DDR3L/LPDDR3
Maximum RAM amount 1 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort No outputs
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  • Radeon HD 6790 has 900% more power consumption, than UHD Graphics 615.
  • Radeon HD 6790 is connected by PCIe 2.0 x16, and UHD Graphics 615 uses PCIe 3.0 x1 interface.
  • Radeon HD 6790 is used in Desktops, and UHD Graphics 615 - in Laptops.
  • Radeon HD 6790 is build with Terascale 2 architecture, and UHD Graphics 615 - with Gen. 9 Amber Lake.
  • Core clock speed of Radeon HD 6790 is 540 MHz higher, than UHD Graphics 615.
  • Radeon HD 6790 is manufactured by 40 nm process technology, and UHD Graphics 615 - by 14 nm process technology.

Game benchmarks

high / 1080p 7−8 0−1
ultra / 1080p 4−5 0−1
QHD / 1440p 0−1 0−1
low / 720p 18−20 10−11
medium / 1080p 9−10 1−2
The average gaming FPS of Radeon HD 6790 in Assassin's Creed Odyssey is 133% more, than UHD Graphics 615.

Full Specs

  Radeon HD 6790 UHD Graphics 615
Architecture Terascale 2 Gen. 9 Amber Lake
Code name Barts Kaby-Lake GT2
Type Desktop Laptop
Release date 4 April 2011 30 August 2018
Pipelines 800 24
Core clock speed 840 MHz 300 MHz
Boost Clock 1000 MHz
Transistor count 1,700 million
Manufacturing process technology 40 nm 14 nm
Texture fill rate 33.60 25.20
Floating-point performance 1,344.0 gflops
Length 198 mm
Memory bus width 256 Bit 64/128 Bit
Memory clock speed 1050 MHz
Memory bandwidth 134.4 GB/s
Shared memory +
DirectX 11.2 (11_0) 12 (12_1)
Shader Model 5.0 6.4
OpenGL 4.4 4.6
OpenCL 1.2 2.1
Vulkan N/A 1.1.103
Bitcoin / BTC (SHA256) 122 Mh/s
Quick Sync +
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