Radeon HD 4850 1GB vs Radeon RX 460 2GB

Intro

Compare those specs to the Radeon RX 460 2GB, which comes with core clock speeds of 1090 MHz on the GPU, and 1750 MHz on the 2048 MB of GDDR5 memory. It features 896 SPUs along with 56 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 2GB		75 Watts
Radeon HD 4850 1GB		110 Watts
	Difference: 35 Watts (47%)

Memory Bandwidth

As far as performance goes, the Radeon RX 460 2GB should theoretically be quite a bit better than the Radeon HD 4850 1GB overall. (explain)

Radeon RX 460 2GB		112000 MB/sec
Radeon HD 4850 1GB		63552 MB/sec
	Difference: 48448 (76%)

Texel Rate

The Radeon RX 460 2GB is a lot (approximately 144%) faster with regards to AF than the Radeon HD 4850 1GB. (explain)

Radeon RX 460 2GB		61040 Mtexels/sec
Radeon HD 4850 1GB		25000 Mtexels/sec
	Difference: 36040 (144%)

Pixel Rate

The Radeon RX 460 2GB will be a lot (approximately 74%) faster with regards to AA than the Radeon HD 4850 1GB, and also will be able to handle higher screen resolutions more effectively. (explain)

Radeon RX 460 2GB		17440 Mpixels/sec
Radeon HD 4850 1GB		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 largest amount of information (in units of megabytes per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the bus width by its memory speed. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better 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 are applied in one second. This figure is worked out 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 handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.