Radeon HD 6450 (OEM) 1GB vs Radeon RX 460 2GB

Intro

Compare those specifications to the Radeon RX 460 2GB, which has GPU core speed of 1090 MHz, and 2048 MB of GDDR5 RAM running at 1750 MHz through a 128-bit bus. It also is made up of 896 SPUs, 56 Texture Address Units, and 16 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 460 2GB		75 Watts
	Difference: 44 Watts (142%)

Memory Bandwidth

The Radeon RX 460 2GB should in theory be much faster than the Radeon HD 6450 (OEM) 1GB overall. (explain)

Radeon RX 460 2GB		112000 MB/sec
Radeon HD 6450 (OEM) 1GB		28800 MB/sec
	Difference: 83200 (289%)

Texel Rate

The Radeon RX 460 2GB is a lot (approximately 917%) better at anisotropic filtering than the Radeon HD 6450 (OEM) 1GB. (explain)

Radeon RX 460 2GB		61040 Mtexels/sec
Radeon HD 6450 (OEM) 1GB		6000 Mtexels/sec
	Difference: 55040 (917%)

Pixel Rate

The Radeon RX 460 2GB is quite a bit (approximately 481%) more effective at full screen anti-aliasing than the Radeon HD 6450 (OEM) 1GB, and should be able to handle higher resolutions while still performing well. (explain)

Radeon RX 460 2GB		17440 Mpixels/sec
Radeon HD 6450 (OEM) 1GB		3000 Mpixels/sec
	Difference: 14440 (481%)

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 megabytes per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. In the case of DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core 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 fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.