GeForce GT 340 1GB vs Radeon HD 5830

Intro

Compare those specifications to the Radeon HD 5830, which uses a 40 nm design. AMD has clocked the core frequency at 800 MHz. The GDDR5 memory works at a speed of 1000 MHz on this specific card. It features 1120(224x5) SPUs along with 56 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
Radeon HD 5830		175 Watts
	Difference: 106 Watts (154%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5830 should in theory be quite a bit superior to the GeForce GT 340 1GB in general. (explain)

Radeon HD 5830		128000 MB/sec
GeForce GT 340 1GB		54400 MB/sec
	Difference: 73600 (135%)

Texel Rate

The Radeon HD 5830 should be much (approximately 155%) more effective at AF than the GeForce GT 340 1GB. (explain)

Radeon HD 5830		44800 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 27200 (155%)

Pixel Rate

The Radeon HD 5830 will be much (approximately 191%) better at full screen anti-aliasing than the GeForce GT 340 1GB, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon HD 5830		12800 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 8400 (191%)

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 largest amount of information (measured in MB per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 can be applied in one second. This number is calculated by multiplying the total texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.