Radeon HD 4670 512MB vs Radeon RX 460

Intro

Compare those specs to the Radeon RX 460, which has a core clock speed of 1090 MHz and a GDDR5 memory speed of 1750 MHz. It also makes use of a 128-bit bus, and makes use of a 14 nm design. It is comprised of 896 SPUs, 56 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4670 512MB		70 Watts
Radeon RX 460		75 Watts
	Difference: 5 Watts (7%)

Memory Bandwidth

The Radeon RX 460 should in theory perform much faster than the Radeon HD 4670 512MB overall. (explain)

Radeon RX 460		112000 MB/sec
Radeon HD 4670 512MB		32000 MB/sec
	Difference: 80000 (250%)

Texel Rate

The Radeon RX 460 should be a lot (approximately 154%) better at texture filtering than the Radeon HD 4670 512MB. (explain)

Radeon RX 460		61040 Mtexels/sec
Radeon HD 4670 512MB		24000 Mtexels/sec
	Difference: 37040 (154%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon RX 460 is superior to the Radeon HD 4670 512MB, and very much so. (explain)

Radeon RX 460		17440 Mpixels/sec
Radeon HD 4670 512MB		6000 Mpixels/sec
	Difference: 11440 (191%)

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 MB per second) that can be transported across the external memory interface in one second. It is worked out 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 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 texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics 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 most pixels that the graphics chip can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs 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 quite a few other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.