Radeon HD 6450 (OEM) 1GB vs Radeon RX 470 4GB

Intro

Compare those specs to the Radeon RX 470 4GB, which has a clock frequency of 926 MHz and a GDDR5 memory speed of 1650 MHz. It also uses a 256-bit memory bus, and uses a 14 nm design. It features 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) 1GB		31 Watts
Radeon RX 470 4GB		120 Watts
	Difference: 89 Watts (287%)

Memory Bandwidth

In theory, the Radeon RX 470 4GB should be much faster than the Radeon HD 6450 (OEM) 1GB in general. (explain)

Radeon RX 470 4GB		211200 MB/sec
Radeon HD 6450 (OEM) 1GB		28800 MB/sec
	Difference: 182400 (633%)

Texel Rate

The Radeon RX 470 4GB will be quite a bit (more or less 1875%) more effective at texture filtering than the Radeon HD 6450 (OEM) 1GB. (explain)

Radeon RX 470 4GB		118528 Mtexels/sec
Radeon HD 6450 (OEM) 1GB		6000 Mtexels/sec
	Difference: 112528 (1875%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon RX 470 4GB is superior to the Radeon HD 6450 (OEM) 1GB, and very much so. (explain)

Radeon RX 470 4GB		29632 Mpixels/sec
Radeon HD 6450 (OEM) 1GB		3000 Mpixels/sec
	Difference: 26632 (888%)

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 max amount of information (in units of MB per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better 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 texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of 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 most pixels that the graphics card can possibly record to its local memory per 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 - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.