Geforce GTX 760 vs Radeon HD 4830 512MB

Intro

Compare all that to the Radeon HD 4830 512MB, which features a clock speed of 575 MHz and a GDDR3 memory speed of 900 MHz. It also uses a 256-bit memory bus, and makes use of a 55 nm design. It is comprised 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 4830 512MB		95 Watts
Geforce GTX 760		170 Watts
	Difference: 75 Watts (79%)

Memory Bandwidth

Theoretically speaking, the Geforce GTX 760 will be 234% quicker than the Radeon HD 4830 512MB in general, because of its higher data rate. (explain)

Geforce GTX 760		192256 MB/sec
Radeon HD 4830 512MB		57600 MB/sec
	Difference: 134656 (234%)

Texel Rate

The Geforce GTX 760 will be quite a bit (approximately 411%) faster with regards to texture filtering than the Radeon HD 4830 512MB. (explain)

Geforce GTX 760		94080 Mtexels/sec
Radeon HD 4830 512MB		18400 Mtexels/sec
	Difference: 75680 (411%)

Pixel Rate

If using a high resolution is important to you, then the Geforce GTX 760 is the winner, by far. (explain)

Geforce GTX 760		31360 Mpixels/sec
Radeon HD 4830 512MB		9200 Mpixels/sec
	Difference: 22160 (241%)

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 (counted in megabytes per second) that can be transported over the external memory interface within a second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, 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 number of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total amount 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 processed per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.