Radeon HD 3470 512MB vs Radeon HD 6570 (OEM) 1GB

Intro

Compare those specifications to the Radeon HD 6570 (OEM) 1GB, which features clock speeds of 650 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR3 RAM. It features 480 SPUs along with 24 Texture Address Units and 8 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 3470 512MB should be a small bit faster than the Radeon HD 6570 (OEM) 1GB overall. (explain)

Radeon HD 3470 512MB		30400 MB/sec
Radeon HD 6570 (OEM) 1GB		28800 MB/sec
	Difference: 1600 (6%)

Texel Rate

The Radeon HD 6570 (OEM) 1GB will be quite a bit (about 388%) more effective at texture filtering than the Radeon HD 3470 512MB. (explain)

Radeon HD 6570 (OEM) 1GB		15600 Mtexels/sec
Radeon HD 3470 512MB		3200 Mtexels/sec
	Difference: 12400 (388%)

Pixel Rate

The Radeon HD 6570 (OEM) 1GB will be quite a bit (approximately 63%) better at AA than the Radeon HD 3470 512MB, and also will be capable of handling higher resolutions without losing too much performance. (explain)

Radeon HD 6570 (OEM) 1GB		5200 Mpixels/sec
Radeon HD 3470 512MB		3200 Mpixels/sec
	Difference: 2000 (63%)

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 across the external memory interface within a second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

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