Geforce GTX 760 vs Radeon HD 4850 2GB

Intro

Compare those specifications to the Radeon HD 4850 2GB, which comes with core clock speeds of 625 MHz on the GPU, and 993 MHz on the 2048 MB of GDDR4 RAM. It features 800(160x5) SPUs along with 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 2GB		110 Watts
Geforce GTX 760		170 Watts
	Difference: 60 Watts (55%)

Memory Bandwidth

The Geforce GTX 760, in theory, should perform a lot faster than the Radeon HD 4850 2GB overall. (explain)

Geforce GTX 760		192256 MB/sec
Radeon HD 4850 2GB		63552 MB/sec
	Difference: 128704 (203%)

Texel Rate

The Geforce GTX 760 should be quite a bit (more or less 276%) more effective at anisotropic filtering than the Radeon HD 4850 2GB. (explain)

Geforce GTX 760		94080 Mtexels/sec
Radeon HD 4850 2GB		25000 Mtexels/sec
	Difference: 69080 (276%)

Pixel Rate

If using a high resolution is important to you, then the Geforce GTX 760 is superior to the Radeon HD 4850 2GB, and very much so. (explain)

Geforce GTX 760		31360 Mpixels/sec
Radeon HD 4850 2GB		10000 Mpixels/sec
	Difference: 21360 (214%)

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 max amount of information (in units of megabytes per second) that can be transported past the external memory interface in one second. It is worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.