GeForce GTX 1660 Ti vs Radeon HD 6790

Intro

Compare those specifications to the Radeon HD 6790, which comes with a GPU core clock speed of 840 MHz, and 1024 MB of GDDR5 memory running at 1050 MHz through a 256-bit bus. It also is comprised of 800 Stream Processors, 40 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1660 Ti		120 Watts
Radeon HD 6790		150 Watts
	Difference: 30 Watts (25%)

Memory Bandwidth

In theory, the GeForce GTX 1660 Ti should perform quite a bit faster than the Radeon HD 6790 in general. (explain)

GeForce GTX 1660 Ti		294912 MB/sec
Radeon HD 6790		134400 MB/sec
	Difference: 160512 (119%)

Texel Rate

The GeForce GTX 1660 Ti is a lot (approximately 329%) faster with regards to anisotropic filtering than the Radeon HD 6790. (explain)

GeForce GTX 1660 Ti		144000 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 110400 (329%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 1660 Ti is a better choice, by a large margin. (explain)

GeForce GTX 1660 Ti		72000 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 58560 (436%)

Please note that the above 'benchmarks' are all just theoretical - the results were calculated based on the card's specifications, and real-world performance may (and probably will) vary at least a bit.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.