Geforce GTX 760 vs Radeon HD 4790

Intro

Compare that to the Radeon HD 4790, which uses a 55 nm design. AMD has set the core speed at 600 MHz. The GDDR5 memory is set to run at a speed of 800 MHz on this particular card. It features 640(128x5) SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Geforce GTX 760 should in theory be quite a bit faster than the Radeon HD 4790 overall. (explain)

Geforce GTX 760		192256 MB/sec
Radeon HD 4790		102400 MB/sec
	Difference: 89856 (88%)

Texel Rate

The Geforce GTX 760 should be much (about 390%) more effective at texture filtering than the Radeon HD 4790. (explain)

Geforce GTX 760		94080 Mtexels/sec
Radeon HD 4790		19200 Mtexels/sec
	Difference: 74880 (390%)

Pixel Rate

If running with a high screen resolution is important to you, then the Geforce GTX 760 is the winner, and very much so. (explain)

Geforce GTX 760		31360 Mpixels/sec
Radeon HD 4790		9600 Mpixels/sec
	Difference: 21760 (227%)

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 data (measured in megabytes per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.