Radeon HD 6450 (OEM) vs Radeon RX 460 2GB

Intro

Compare all that to the Radeon RX 460 2GB, which has GPU clock speed of 1090 MHz, and 2048 MB of GDDR5 memory running at 1750 MHz through a 128-bit bus. It also is made up of 896 Stream Processors, 56 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
Radeon RX 460 2GB		75 Watts
	Difference: 44 Watts (142%)

Memory Bandwidth

As far as performance goes, the Radeon RX 460 2GB should theoretically be quite a bit better than the Radeon HD 6450 (OEM) in general. (explain)

Radeon RX 460 2GB		112000 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 99200 (775%)

Texel Rate

The Radeon RX 460 2GB should be much (approximately 1121%) more effective at texture filtering than the Radeon HD 6450 (OEM). (explain)

Radeon RX 460 2GB		61040 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 56040 (1121%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 460 2GB is a better choice, and very much so. (explain)

Radeon RX 460 2GB		17440 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 14940 (598%)

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 maximum amount of information (in units of MB per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. If it uses DDR RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.