Geforce GTX 780 vs Radeon HD 7790

Intro

Compare those specs to the Radeon HD 7790, which has core speeds of 1000 MHz on the GPU, and 1500 MHz on the 1024 MB of GDDR5 RAM. It features 896 SPUs as well as 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 780		10082 points
Radeon HD 7790		4330 points
	Difference: 5752 (133%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
Geforce GTX 780		250 Watts
	Difference: 165 Watts (194%)

Memory Bandwidth

The Geforce GTX 780 should in theory perform much faster than the Radeon HD 7790 in general. (explain)

Geforce GTX 780		288384 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 192384 (200%)

Texel Rate

The Geforce GTX 780 is quite a bit (approximately 196%) better at texture filtering than the Radeon HD 7790. (explain)

Geforce GTX 780		165696 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 109696 (196%)

Pixel Rate

If running with a high screen resolution is important to you, then the Geforce GTX 780 is superior to the Radeon HD 7790, and very much so. (explain)

Geforce GTX 780		41424 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 25424 (159%)

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 (in units of megabytes per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the graphics 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 the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units 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 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 reach the max fill rate.