Radeon HD 4890 2GB vs Radeon R7 360

Intro

Compare those specs to the Radeon R7 360, which has GPU core speed of 1050 MHz, and 2048 MB of GDDR5 memory running at 1625 MHz through a 128-bit bus. It also is comprised of 768 Stream Processors, 48 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 360		100 Watts
Radeon HD 4890 2GB		190 Watts
	Difference: 90 Watts (90%)

Memory Bandwidth

In theory, the Radeon HD 4890 2GB is 20% quicker than the Radeon R7 360 in general, due to its greater data rate. (explain)

Radeon HD 4890 2GB		124800 MB/sec
Radeon R7 360		104000 MB/sec
	Difference: 20800 (20%)

Texel Rate

The Radeon R7 360 is much (approximately 26%) more effective at anisotropic filtering than the Radeon HD 4890 2GB. (explain)

Radeon R7 360		50400 Mtexels/sec
Radeon HD 4890 2GB		40000 Mtexels/sec
	Difference: 10400 (26%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R7 360 is a better choice, though only just barely. (explain)

Radeon R7 360		16800 Mpixels/sec
Radeon HD 4890 2GB		16000 Mpixels/sec
	Difference: 800 (5%)

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 (in units of MB per second) that can be moved over the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, the result should 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 number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher 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 card could possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the the core 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 is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.