GeForce GTX 1660 Ti vs Radeon HD 7770

Intro

Compare all of that to the Radeon HD 7770, which comes with a clock speed of 1000 MHz and a GDDR5 memory frequency of 1125 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is made up of 640 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
GeForce GTX 1660 Ti		120 Watts
	Difference: 40 Watts (50%)

Memory Bandwidth

The GeForce GTX 1660 Ti, in theory, should perform quite a bit faster than the Radeon HD 7770 overall. (explain)

GeForce GTX 1660 Ti		294912 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 222912 (310%)

Texel Rate

The GeForce GTX 1660 Ti will be much (about 260%) better at AF than the Radeon HD 7770. (explain)

GeForce GTX 1660 Ti		144000 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 104000 (260%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTX 1660 Ti is superior to the Radeon HD 7770, by far. (explain)

GeForce GTX 1660 Ti		72000 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 56000 (350%)

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 information (measured in megabytes per second) that can be transferred over the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.