GeForce GTX 260 216SP 55 nm vs Radeon HD 5830

Intro

Compare those specs to the Radeon HD 5830, which features GPU clock speed of 800 MHz, and 1024 MB of GDDR5 RAM 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)

GeForce GTX 260 216SP 55 nm		171 Watts
Radeon HD 5830		175 Watts
	Difference: 4 Watts (2%)

Memory Bandwidth

Theoretically, the Radeon HD 5830 should perform a small bit faster than the GeForce GTX 260 216SP 55 nm in general. (explain)

Radeon HD 5830		128000 MB/sec
GeForce GTX 260 216SP 55 nm		111888 MB/sec
	Difference: 16112 (14%)

Texel Rate

The Radeon HD 5830 should be a small bit (approximately 8%) more effective at anisotropic filtering than the GeForce GTX 260 216SP 55 nm. (explain)

Radeon HD 5830		44800 Mtexels/sec
GeForce GTX 260 216SP 55 nm		41472 Mtexels/sec
	Difference: 3328 (8%)

Pixel Rate

The GeForce GTX 260 216SP 55 nm should be quite a bit (more or less 26%) faster with regards to FSAA than the Radeon HD 5830, and will be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 260 216SP 55 nm		16128 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 3328 (26%)

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 (counted in MB per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.