GeForce GT 315 vs Radeon HD 5830

Intro

Compare all of that to the Radeon HD 5830, which has GPU clock speed of 800 MHz, and 1024 MB of GDDR5 memory set to run at 1000 MHz through a 256-bit bus. It also is made up of 1120(224x5) Stream Processors, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 315		52 Watts
Radeon HD 5830		175 Watts
	Difference: 123 Watts (237%)

Memory Bandwidth

Theoretically, the Radeon HD 5830 should be a lot faster than the GeForce GT 315 overall. (explain)

Radeon HD 5830		128000 MB/sec
GeForce GT 315		25280 MB/sec
	Difference: 102720 (406%)

Texel Rate

The Radeon HD 5830 should be a lot (about 348%) faster with regards to AF than the GeForce GT 315. (explain)

Radeon HD 5830		44800 Mtexels/sec
GeForce GT 315		10000 Mtexels/sec
	Difference: 34800 (348%)

Pixel Rate

The Radeon HD 5830 will be much (more or less 156%) better at full screen anti-aliasing than the GeForce GT 315, and will be capable of handling higher resolutions while still performing well. (explain)

Radeon HD 5830		12800 Mpixels/sec
GeForce GT 315		5000 Mpixels/sec
	Difference: 7800 (156%)

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 data (measured in megabytes per second) that can be moved over the external memory interface in a second. It's calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total number of texture units by the core clock 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 in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.