GeForce GTX 980 vs Radeon HD 7790

Intro

Compare that to the Radeon HD 7790, which makes use of a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 RAM is set to run at a frequency of 1500 MHz on this card. It features 896 SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

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 980		13552 points
Radeon HD 7790		4330 points
	Difference: 9222 (213%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
GeForce GTX 980		165 Watts
	Difference: 80 Watts (94%)

Memory Bandwidth

Performance-wise, the GeForce GTX 980 should theoretically be much better than the Radeon HD 7790 in general. (explain)

GeForce GTX 980		224000 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 128000 (133%)

Texel Rate

The GeForce GTX 980 should be a lot (more or less 157%) better at AF than the Radeon HD 7790. (explain)

GeForce GTX 980		144128 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 88128 (157%)

Pixel Rate

The GeForce GTX 980 is quite a bit (approximately 350%) faster with regards to AA than the Radeon HD 7790, and should be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 980		72064 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 56064 (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 max amount of information (counted in MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's 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 number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the clock 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 quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.