Radeon HD 3470 512MB vs Radeon HD 7750

Intro

Compare that to the Radeon HD 7750, which has clock speeds of 800 MHz on the GPU, and 1125 MHz on the 1024 MB of GDDR5 memory. It features 512 SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon HD 7750 should theoretically be quite a bit superior to the Radeon HD 3470 512MB in general. (explain)

Radeon HD 7750		72000 MB/sec
Radeon HD 3470 512MB		30400 MB/sec
	Difference: 41600 (137%)

Texel Rate

The Radeon HD 7750 will be much (approximately 700%) better at AF than the Radeon HD 3470 512MB. (explain)

Radeon HD 7750		25600 Mtexels/sec
Radeon HD 3470 512MB		3200 Mtexels/sec
	Difference: 22400 (700%)

Pixel Rate

The Radeon HD 7750 will be quite a bit (about 300%) faster with regards to AA than the Radeon HD 3470 512MB, and should be able to handle higher screen resolutions better. (explain)

Radeon HD 7750		12800 Mpixels/sec
Radeon HD 3470 512MB		3200 Mpixels/sec
	Difference: 9600 (300%)

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 largest amount of data (in units of megabytes per second) that can be transported past the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as 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 potential to get to the maximum fill rate.