GeForce GTX 460 (OEM) vs Radeon HD 4830 512MB

Intro

Compare that to the Radeon HD 4830 512MB, which comes with core speeds of 575 MHz on the GPU, and 900 MHz on the 512 MB of GDDR3 memory. It features 640(128x5) SPUs as well as 32 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4830 512MB		95 Watts
GeForce GTX 460 (OEM)		150 Watts
	Difference: 55 Watts (58%)

Memory Bandwidth

Theoretically, the GeForce GTX 460 (OEM) should perform a lot faster than the Radeon HD 4830 512MB in general. (explain)

GeForce GTX 460 (OEM)		108800 MB/sec
Radeon HD 4830 512MB		57600 MB/sec
	Difference: 51200 (89%)

Texel Rate

The GeForce GTX 460 (OEM) is a lot (approximately 98%) more effective at anisotropic filtering than the Radeon HD 4830 512MB. (explain)

GeForce GTX 460 (OEM)		36400 Mtexels/sec
Radeon HD 4830 512MB		18400 Mtexels/sec
	Difference: 18000 (98%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GTX 460 (OEM) is the winner, and very much so. (explain)

GeForce GTX 460 (OEM)		20800 Mpixels/sec
Radeon HD 4830 512MB		9200 Mpixels/sec
	Difference: 11600 (126%)

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 information (counted in megabytes per second) that can be moved over the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better 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 number of texture map elements (texels) that are processed 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 better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.