Radeon HD 6450 (OEM) vs Radeon RX 470 4GB

Intro

Compare those specs to the Radeon RX 470 4GB, which features a GPU core clock speed of 926 MHz, and 4096 MB of GDDR5 memory running at 1650 MHz through a 256-bit bus. It also is comprised of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
Radeon RX 470 4GB		120 Watts
	Difference: 89 Watts (287%)

Memory Bandwidth

Theoretically speaking, the Radeon RX 470 4GB should perform quite a bit faster than the Radeon HD 6450 (OEM) overall. (explain)

Radeon RX 470 4GB		211200 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 198400 (1550%)

Texel Rate

The Radeon RX 470 4GB will be quite a bit (more or less 2271%) more effective at AF than the Radeon HD 6450 (OEM). (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 113528 (2271%)

Pixel Rate

The Radeon RX 470 4GB is quite a bit (approximately 1085%) better at FSAA than the Radeon HD 6450 (OEM), and also should be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 27132 (1085%)

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 maximum amount of information (measured in megabytes per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.