Geforce GTX 760 vs Radeon HD 4770

Intro

Compare that to the Radeon HD 4770, which features a core clock speed of 750 MHz and a GDDR5 memory speed of 800 MHz. It also uses a 128-bit memory bus, and uses a 40 nm design. It is made up of 640(128x5) SPUs, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4770		80 Watts
Geforce GTX 760		170 Watts
	Difference: 90 Watts (113%)

Memory Bandwidth

As far as performance goes, the Geforce GTX 760 should in theory be a lot superior to the Radeon HD 4770 overall. (explain)

Geforce GTX 760		192256 MB/sec
Radeon HD 4770		51200 MB/sec
	Difference: 141056 (276%)

Texel Rate

The Geforce GTX 760 will be much (about 292%) faster with regards to AF than the Radeon HD 4770. (explain)

Geforce GTX 760		94080 Mtexels/sec
Radeon HD 4770		24000 Mtexels/sec
	Difference: 70080 (292%)

Pixel Rate

The Geforce GTX 760 is much (about 161%) faster with regards to AA than the Radeon HD 4770, and will be able to handle higher screen resolutions without slowing down too much. (explain)

Geforce GTX 760		31360 Mpixels/sec
Radeon HD 4770		12000 Mpixels/sec
	Difference: 19360 (161%)

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 max amount of information (measured in MB per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. 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 ability to get to the max fill rate.