GeForce GTX 460 SE vs Radeon HD 4830 512MB

Intro

Compare all of that to the Radeon HD 4830 512MB, which uses a 55 nm design. AMD has set the core speed at 575 MHz. The GDDR3 memory runs at a speed of 900 MHz on this specific model. It features 640(128x5) SPUs along with 32 TAUs 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 SE		150 Watts
	Difference: 55 Watts (58%)

Memory Bandwidth

Theoretically speaking, the GeForce GTX 460 SE is 89% faster than the Radeon HD 4830 512MB overall, because of its higher bandwidth. (explain)

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

Texel Rate

The GeForce GTX 460 SE will be a lot (about 70%) faster with regards to texture filtering than the Radeon HD 4830 512MB. (explain)

GeForce GTX 460 SE		31200 Mtexels/sec
Radeon HD 4830 512MB		18400 Mtexels/sec
	Difference: 12800 (70%)

Pixel Rate

The GeForce GTX 460 SE should be a lot (more or less 126%) better at FSAA than the Radeon HD 4830 512MB, and also should be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 460 SE		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: Bandwidth is the maximum amount of information (in units of MB per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better 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 texture map elements (texels) that can be processed per 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 the texel rate, the better the graphics 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 card can possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate 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 outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.