Radeon HD 5450 vs Radeon HD 6670 (OEM)

Intro

Compare all of that to the Radeon HD 6670 (OEM), which uses a 40 nm design. AMD has set the core frequency at 800 MHz. The GDDR5 memory works at a frequency of 1000 MHz on this specific model. It features 480 SPUs as well as 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 6670 (OEM)		63 Watts
	Difference: 44 Watts (232%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6670 (OEM) will be 400% quicker than the Radeon HD 5450 in general, due to its higher data rate. (explain)

Radeon HD 6670 (OEM)		64000 MB/sec
Radeon HD 5450		12800 MB/sec
	Difference: 51200 (400%)

Texel Rate

The Radeon HD 6670 (OEM) will be a lot (more or less 269%) more effective at texture filtering than the Radeon HD 5450. (explain)

Radeon HD 6670 (OEM)		19200 Mtexels/sec
Radeon HD 5450		5200 Mtexels/sec
	Difference: 14000 (269%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 6670 (OEM) is superior to the Radeon HD 5450, and very much so. (explain)

Radeon HD 6670 (OEM)		6400 Mpixels/sec
Radeon HD 5450		2600 Mpixels/sec
	Difference: 3800 (146%)

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 transferred past the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's 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 are processed in one second. This number is worked out by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video 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 maximum amount of pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.