Radeon HD 5450 vs Radeon HD 5830

Intro

Compare those specs to the Radeon HD 5830, which makes use of a 40 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 memory is set to run at a frequency of 1000 MHz on this specific model. It features 1120(224x5) SPUs along with 56 TAUs and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
Radeon HD 5830		175 Watts
	Difference: 156 Watts (821%)

Memory Bandwidth

The Radeon HD 5830 should in theory perform quite a bit faster than the Radeon HD 5450 overall. (explain)

Radeon HD 5830		128000 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 115200 (900%)

Texel Rate

The Radeon HD 5830 should be much (about 762%) better at anisotropic filtering than the Radeon HD 5450. (explain)

Radeon HD 5830		44800 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 39600 (762%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 5830 is the winner, by a large margin. (explain)

Radeon HD 5830		12800 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 10200 (392%)

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 max amount of data (counted in megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.