GeForce GTX 295 vs Radeon HD 5830

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5830		175 Watts
GeForce GTX 295		289 Watts
	Difference: 114 Watts (65%)

Memory Bandwidth

The GeForce GTX 295 should theoretically perform quite a bit faster than the Radeon HD 5830 in general. (explain)

GeForce GTX 295		223776 MB/sec
Radeon HD 5830		128000 MB/sec
	Difference: 95776 (75%)

Texel Rate

The GeForce GTX 295 will be much (about 106%) more effective at AF than the Radeon HD 5830. (explain)

GeForce GTX 295		92160 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 47360 (106%)

Pixel Rate

The GeForce GTX 295 will be quite a bit (about 152%) more effective at FSAA than the Radeon HD 5830, and also will be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTX 295		32256 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 19456 (152%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the maximum amount of data (counted in megabytes per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the interface width by the speed of its memory. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better 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 applied per second. This is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends 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.