GeForce GTS 450 1GB vs Radeon HD 5830

Intro

Compare that to the Radeon HD 5830, which has a clock speed of 800 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 256-bit memory bus, and uses a 40 nm design. It is made up of 1120(224x5) SPUs, 56 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB		106 Watts
Radeon HD 5830		175 Watts
	Difference: 69 Watts (65%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5830 should be a lot faster than the GeForce GTS 450 1GB in general. (explain)

Radeon HD 5830		128000 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 70272 (122%)

Texel Rate

The Radeon HD 5830 should be quite a bit (more or less 79%) faster with regards to texture filtering than the GeForce GTS 450 1GB. (explain)

Radeon HD 5830		44800 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 19744 (79%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 5830 is a better choice, though not by far. (explain)

Radeon HD 5830		12800 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 272 (2%)

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 over the external memory interface in a second. It's calculated by multiplying the interface width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called 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 of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.