GeForce GTX 1080 vs Radeon HD 7790

Intro

Compare those specs to the Radeon HD 7790, which has a core clock speed of 1000 MHz and a GDDR5 memory frequency of 1500 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 896 SPUs, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 1080		21942 points
Radeon HD 7790		4330 points
	Difference: 17612 (407%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
GeForce GTX 1080		180 Watts
	Difference: 95 Watts (112%)

Memory Bandwidth

The GeForce GTX 1080 should theoretically perform much faster than the Radeon HD 7790 in general. (explain)

GeForce GTX 1080		327680 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 231680 (241%)

Texel Rate

The GeForce GTX 1080 is a lot (about 359%) faster with regards to texture filtering than the Radeon HD 7790. (explain)

GeForce GTX 1080		257120 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 201120 (359%)

Pixel Rate

The GeForce GTX 1080 will be a lot (approximately 543%) better at FSAA than the Radeon HD 7790, and also will be capable of handling higher resolutions better. (explain)

GeForce GTX 1080		102848 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 86848 (543%)

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 maximum amount of information (measured in megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better 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 are applied in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at 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 card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.