GeForce GTX 1660 Ti vs Radeon HD 7870

Intro

Compare those specifications to the Radeon HD 7870, which comes with a GPU core clock speed of 1000 MHz, and 2048 MB of GDDR5 RAM set to run at 1200 MHz through a 256-bit bus. It also is made up of 1280 SPUs, 80 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1660 Ti		120 Watts
Radeon HD 7870		175 Watts
	Difference: 55 Watts (46%)

Memory Bandwidth

In theory, the GeForce GTX 1660 Ti will be 92% faster than the Radeon HD 7870 overall, due to its higher bandwidth. (explain)

GeForce GTX 1660 Ti		294912 MB/sec
Radeon HD 7870		153600 MB/sec
	Difference: 141312 (92%)

Texel Rate

The GeForce GTX 1660 Ti should be quite a bit (approximately 80%) faster with regards to anisotropic filtering than the Radeon HD 7870. (explain)

GeForce GTX 1660 Ti		144000 Mtexels/sec
Radeon HD 7870		80000 Mtexels/sec
	Difference: 64000 (80%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 1660 Ti is the winner, and very much so. (explain)

GeForce GTX 1660 Ti		72000 Mpixels/sec
Radeon HD 7870		32000 Mpixels/sec
	Difference: 40000 (125%)

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: Bandwidth is the max amount of data (counted in MB per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the bus width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.