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

Intro

Compare all that to the Radeon RX 460, which comes with clock speeds of 1090 MHz on the GPU, and 1750 MHz on the 4096 MB of GDDR5 RAM. It features 896 SPUs as well as 56 TAUs and 16 Rasterization Operator 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		75 Watts
	Difference: 44 Watts (142%)

Memory Bandwidth

In theory, the Radeon RX 460 will be 289% quicker than the Radeon HD 6450 (OEM) 1GB in general, due to its higher bandwidth. (explain)

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

Texel Rate

The Radeon RX 460 should be quite a bit (about 917%) faster with regards to texture filtering than the Radeon HD 6450 (OEM) 1GB. (explain)

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

Pixel Rate

The Radeon RX 460 is much (approximately 481%) more effective at anti-aliasing than the Radeon HD 6450 (OEM) 1GB, and also should be able to handle higher resolutions better. (explain)

Radeon RX 460		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: Memory bandwidth is the max amount of data (in units of megabytes per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the video 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 that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.