Radeon HD 6870 vs Radeon RX 460

Intro

Compare those specifications 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 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon RX 460		5595 points
Radeon HD 6870		2870 points
	Difference: 2725 (95%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon RX 460		75 Watts
Radeon HD 6870		151 Watts
	Difference: 76 Watts (101%)

Memory Bandwidth

Theoretically, the Radeon HD 6870 should perform a small bit faster than the Radeon RX 460 in general. (explain)

Radeon HD 6870		134400 MB/sec
Radeon RX 460		112000 MB/sec
	Difference: 22400 (20%)

Texel Rate

The Radeon RX 460 is much (more or less 21%) faster with regards to texture filtering than the Radeon HD 6870. (explain)

Radeon RX 460		61040 Mtexels/sec
Radeon HD 6870		50400 Mtexels/sec
	Difference: 10640 (21%)

Pixel Rate

The Radeon HD 6870 will be a lot (approximately 65%) more effective at AA than the Radeon RX 460, and also should be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 6870		28800 Mpixels/sec
Radeon RX 460		17440 Mpixels/sec
	Difference: 11360 (65%)

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 information (in units of MB per second) that can be transferred across the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses 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, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.