GeForce GTX 275 vs Radeon HD 5830

Intro

Compare all of that to the Radeon HD 5830, which features core clock speeds of 800 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 memory. It features 1120(224x5) SPUs along with 56 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5830		175 Watts
GeForce GTX 275		219 Watts
	Difference: 44 Watts (25%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5830 should in theory be a little bit superior to the GeForce GTX 275 in general. (explain)

Radeon HD 5830		128000 MB/sec
GeForce GTX 275		127008 MB/sec
	Difference: 992 (1%)

Texel Rate

The GeForce GTX 275 should be a small bit (approximately 13%) faster with regards to anisotropic filtering than the Radeon HD 5830. (explain)

GeForce GTX 275		50640 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 5840 (13%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 275 is the winner, by far. (explain)

GeForce GTX 275		17724 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 4924 (38%)

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 maximum amount of data (measured in MB per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This number is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number 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 filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.