Radeon HD 6790 vs Radeon R7 Carrizo

If you are going to buy a new graphics card and are choosing between Radeon HD 6790 and Radeon R7 Carrizo, 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 Radeon R7 Carrizo, check out specs charts below.

Radeon R7 Carrizo is a Laptop Graphics Card

Note: Radeon R7 Carrizo 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 R7 Carrizo here:

Main Specs

  Radeon HD 6790 Radeon R7 Carrizo
Power consumption (TDP) 150 Watt 12-35 Watt
Interface PCIe 2.0 x16
Supplementary power connectors 2x 6-pin
Memory type GDDR5
Maximum RAM amount 1 GB
Display Connectors 2x DVI, 1x HDMI, 1x DisplayPort
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  • Radeon HD 6790 has 1150% more power consumption, than Radeon R7 Carrizo.
  • Radeon HD 6790 is used in Desktops, and Radeon R7 Carrizo - in Laptops.
  • Radeon HD 6790 is build with Terascale 2 architecture, and Radeon R7 Carrizo - with GCN 1.2/2.0.
  • Radeon HD 6790 is manufactured by 40 nm process technology, and Radeon R7 Carrizo - by 28 nm process technology.

Game benchmarks

high / 1080p 7−8 2−3
ultra / 1080p 4−5 0−1
QHD / 1440p 0−1 0−1
low / 720p 18−20 12−14
medium / 1080p 9−10 5−6
The average gaming FPS of Radeon HD 6790 in Assassin's Creed Odyssey is 71% more, than Radeon R7 Carrizo.

Full Specs

  Radeon HD 6790 Radeon R7 Carrizo
Architecture Terascale 2 GCN 1.2/2.0
Code name Barts Carrizo
Type Desktop Laptop
Release date 4 April 2011 4 June 2015
Pipelines 800 512
Core clock speed 840 MHz
Boost Clock 800 MHz
Transistor count 1,700 million 2410 Million
Manufacturing process technology 40 nm 28 nm
Texture fill rate 33.60
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) DirectX 12 (FL 12_0)
Shader Model 5.0
OpenGL 4.4
OpenCL 1.2
Vulkan N/A
Bitcoin / BTC (SHA256) 122 Mh/s
Laptop size medium sized
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