GeForce RTX 2070 Super vs Radeon HD 7770

Intro

Compare those specifications to the Radeon HD 7770, which makes use of a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 memory runs at a frequency of 1125 MHz on this specific card. It features 640 SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7770		80 Watts
GeForce RTX 2070 Super		215 Watts
	Difference: 135 Watts (169%)

Memory Bandwidth

In theory, the GeForce RTX 2070 Super is 537% quicker than the Radeon HD 7770 in general, due to its greater bandwidth. (explain)

GeForce RTX 2070 Super		458752 MB/sec
Radeon HD 7770		72000 MB/sec
	Difference: 386752 (537%)

Texel Rate

The GeForce RTX 2070 Super will be quite a bit (approximately 542%) better at anisotropic filtering than the Radeon HD 7770. (explain)

GeForce RTX 2070 Super		256800 Mtexels/sec
Radeon HD 7770		40000 Mtexels/sec
	Difference: 216800 (542%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce RTX 2070 Super is superior to the Radeon HD 7770, by a large margin. (explain)

GeForce RTX 2070 Super		102720 Mpixels/sec
Radeon HD 7770		16000 Mpixels/sec
	Difference: 86720 (542%)

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 largest amount of data (counted in megabytes per second) that can be transported past the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.