GeForce GTX 1660 Ti vs Radeon RX Vega 64

Intro

Compare all that to the Radeon RX Vega 64, which comes with core clock speeds of 1247 MHz on the GPU, and 1890 MHz on the 8192 MB of HBM2 RAM. It features 4096 SPUs along with 256 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1660 Ti		120 Watts
Radeon RX Vega 64		295 Watts
	Difference: 175 Watts (146%)

Memory Bandwidth

In theory, the Radeon RX Vega 64 will be 68% quicker than the GeForce GTX 1660 Ti overall, because of its higher data rate. (explain)

Radeon RX Vega 64		495411 MB/sec
GeForce GTX 1660 Ti		294912 MB/sec
	Difference: 200499 (68%)

Texel Rate

The Radeon RX Vega 64 should be a lot (about 122%) faster with regards to anisotropic filtering than the GeForce GTX 1660 Ti. (explain)

Radeon RX Vega 64		319232 Mtexels/sec
GeForce GTX 1660 Ti		144000 Mtexels/sec
	Difference: 175232 (122%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon RX Vega 64 is superior to the GeForce GTX 1660 Ti, not by a very large margin though. (explain)

Radeon RX Vega 64		79808 Mpixels/sec
GeForce GTX 1660 Ti		72000 Mpixels/sec
	Difference: 7808 (11%)

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 largest amount of data (measured in MB per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 can be processed per second. This is worked out by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.