GeForce RTX 2080 SUPER vs Radeon HD 7790

Intro

Compare those specifications to the Radeon HD 7790, which uses a 28 nm design. AMD has clocked the core frequency at 1000 MHz. The GDDR5 memory runs at a speed of 1500 MHz on this specific card. It features 896 SPUs along with 56 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
GeForce RTX 2080 SUPER		250 Watts
	Difference: 165 Watts (194%)

Memory Bandwidth

As far as performance goes, the GeForce RTX 2080 SUPER should in theory be much better than the Radeon HD 7790 in general. (explain)

GeForce RTX 2080 SUPER		507904 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 411904 (429%)

Texel Rate

The GeForce RTX 2080 SUPER is quite a bit (more or less 466%) more effective at AF than the Radeon HD 7790. (explain)

GeForce RTX 2080 SUPER		316800 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 260800 (466%)

Pixel Rate

The GeForce RTX 2080 SUPER should be much (approximately 560%) more effective at full screen anti-aliasing than the Radeon HD 7790, and will be able to handle higher screen resolutions better. (explain)

GeForce RTX 2080 SUPER		105600 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 89600 (560%)

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 (in units of MB per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the 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 most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.