GeForce GTX 980 vs Radeon HD 7790

Intro

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

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 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

The GeForce GTX 980 should in theory perform a lot faster 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 quite a bit (more or less 157%) better at texture filtering 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 a lot (approximately 350%) faster with regards to AA than the Radeon HD 7790, and should be capable of handling higher screen resolutions while still performing well. (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 data (measured in megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen 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 texture units by the core clock speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can 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 the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.