Radeon HD 4850 2GB vs Radeon RX 460 2GB

Intro

Compare those specifications to the Radeon RX 460 2GB, which features a GPU core 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 SPUs, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 2GB		75 Watts
Radeon HD 4850 2GB		110 Watts
	Difference: 35 Watts (47%)

Memory Bandwidth

Performance-wise, the Radeon RX 460 2GB should in theory be much better than the Radeon HD 4850 2GB overall. (explain)

Radeon RX 460 2GB		112000 MB/sec
Radeon HD 4850 2GB		63552 MB/sec
	Difference: 48448 (76%)

Texel Rate

The Radeon RX 460 2GB should be a lot (approximately 144%) faster with regards to anisotropic filtering than the Radeon HD 4850 2GB. (explain)

Radeon RX 460 2GB		61040 Mtexels/sec
Radeon HD 4850 2GB		25000 Mtexels/sec
	Difference: 36040 (144%)

Pixel Rate

The Radeon RX 460 2GB is a lot (more or less 74%) more effective at anti-aliasing than the Radeon HD 4850 2GB, and should be able to handle higher screen resolutions better. (explain)

Radeon RX 460 2GB		17440 Mpixels/sec
Radeon HD 4850 2GB		10000 Mpixels/sec
	Difference: 7440 (74%)

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 (measured in megabytes per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.