Radeon HD 5850 vs Radeon RX 460 2GB

Intro

Compare all of that to the Radeon RX 460 2GB, which features a clock speed of 1090 MHz and a GDDR5 memory speed of 1750 MHz. It also features a 128-bit bus, and uses a 14 nm design. It is comprised of 896 SPUs, 56 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460 2GB		75 Watts
Radeon HD 5850		151 Watts
	Difference: 76 Watts (101%)

Memory Bandwidth

As far as performance goes, the Radeon HD 5850 should in theory be a little bit superior to the Radeon RX 460 2GB in general. (explain)

Radeon HD 5850		128000 MB/sec
Radeon RX 460 2GB		112000 MB/sec
	Difference: 16000 (14%)

Texel Rate

The Radeon RX 460 2GB will be just a bit (more or less 17%) better at AF than the Radeon HD 5850. (explain)

Radeon RX 460 2GB		61040 Mtexels/sec
Radeon HD 5850		52200 Mtexels/sec
	Difference: 8840 (17%)

Pixel Rate

The Radeon HD 5850 will be quite a bit (approximately 33%) more effective at anti-aliasing than the Radeon RX 460 2GB, and capable of handling higher resolutions more effectively. (explain)

Radeon HD 5850		23200 Mpixels/sec
Radeon RX 460 2GB		17440 Mpixels/sec
	Difference: 5760 (33%)

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 data (in units of megabytes per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, the result should 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 AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is worked out by multiplying the total number of texture units of the card by the core 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.