Radeon HD 3470 512MB vs Radeon HD 6450 (OEM)

Intro

Compare all that to the Radeon HD 6450 (OEM), which features core speeds of 625 MHz on the GPU, and 800 MHz on the 512 MB of GDDR3 RAM. It features 160 SPUs along with 8 Texture Address Units and 4 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 3470 512MB will be 138% quicker than the Radeon HD 6450 (OEM) overall, because of its higher bandwidth. (explain)

Radeon HD 3470 512MB		30400 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 17600 (138%)

Texel Rate

The Radeon HD 6450 (OEM) will be a lot (about 56%) faster with regards to AF than the Radeon HD 3470 512MB. (explain)

Radeon HD 6450 (OEM)		5000 Mtexels/sec
Radeon HD 3470 512MB		3200 Mtexels/sec
	Difference: 1800 (56%)

Pixel Rate

The Radeon HD 3470 512MB should be quite a bit (approximately 28%) faster with regards to AA than the Radeon HD 6450 (OEM), and capable of handling higher screen resolutions better. (explain)

Radeon HD 3470 512MB		3200 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 700 (28%)

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: Memory bandwidth is the max amount of information (in units of MB per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.