Geforce GTX 760 vs Radeon HD 4870 X2

Intro

Compare all of that to the Radeon HD 4870 X2, which has core speeds of 750 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR5 memory. It features 800(160x5) SPUs as well as 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Geforce GTX 760		170 Watts
Radeon HD 4870 X2		350 Watts
	Difference: 180 Watts (106%)

Memory Bandwidth

In theory, the Radeon HD 4870 X2 should perform a little bit faster than the Geforce GTX 760 in general. (explain)

Radeon HD 4870 X2		230400 MB/sec
Geforce GTX 760		192256 MB/sec
	Difference: 38144 (20%)

Texel Rate

The Geforce GTX 760 will be much (about 57%) better at AF than the Radeon HD 4870 X2. (explain)

Geforce GTX 760		94080 Mtexels/sec
Radeon HD 4870 X2		60000 Mtexels/sec
	Difference: 34080 (57%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Geforce GTX 760 is the winner, by a large margin. (explain)

Geforce GTX 760		31360 Mpixels/sec
Radeon HD 4870 X2		24000 Mpixels/sec
	Difference: 7360 (31%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of MB per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 number of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the card will be at 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 chip can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.