Radeon HD 5450 vs Radeon HD 6570 (OEM) 1GB

Intro

Compare those specs to the Radeon HD 6570 (OEM) 1GB, which uses a 40 nm design. AMD has clocked the core frequency at 650 MHz. The GDDR3 memory is set to run at a frequency of 900 MHz on this card. It features 480 SPUs along with 24 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450		19 Watts
Radeon HD 6570 (OEM) 1GB		50 Watts
	Difference: 31 Watts (163%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6570 (OEM) 1GB should be 125% quicker than the Radeon HD 5450 in general, because of its greater data rate. (explain)

Radeon HD 6570 (OEM) 1GB		28800 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 16000 (125%)

Texel Rate

The Radeon HD 6570 (OEM) 1GB should be quite a bit (more or less 200%) faster with regards to anisotropic filtering than the Radeon HD 5450. (explain)

Radeon HD 6570 (OEM) 1GB		15600 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 10400 (200%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 6570 (OEM) 1GB is superior to the Radeon HD 5450, by far. (explain)

Radeon HD 6570 (OEM) 1GB		5200 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 2600 (100%)

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 megabytes per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.