Geforce GTX 760 vs Radeon HD 4870 2GB

Intro

Compare those specs to the Radeon HD 4870 2GB, which features a clock frequency of 750 MHz and a GDDR5 memory frequency of 900 MHz. It also features a 256-bit bus, and makes use of a 55 nm design. It features 800(160x5) SPUs, 40 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4870 2GB		150 Watts
Geforce GTX 760		170 Watts
	Difference: 20 Watts (13%)

Memory Bandwidth

The Geforce GTX 760 should theoretically be much faster than the Radeon HD 4870 2GB overall. (explain)

Geforce GTX 760		192256 MB/sec
Radeon HD 4870 2GB		115200 MB/sec
	Difference: 77056 (67%)

Texel Rate

The Geforce GTX 760 will be quite a bit (approximately 214%) more effective at texture filtering than the Radeon HD 4870 2GB. (explain)

Geforce GTX 760		94080 Mtexels/sec
Radeon HD 4870 2GB		30000 Mtexels/sec
	Difference: 64080 (214%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Geforce GTX 760 is superior to the Radeon HD 4870 2GB, by a large margin. (explain)

Geforce GTX 760		31360 Mpixels/sec
Radeon HD 4870 2GB		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: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory 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 faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed 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 the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs 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 output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.