Radeon HD 4870 X2 vs Radeon R7 360

Intro

Compare those specs to the Radeon R7 360, which comes with a GPU core clock speed of 1050 MHz, and 2048 MB of GDDR5 RAM running at 1625 MHz through a 128-bit bus. It also features 768 Stream Processors, 48 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 360		100 Watts
Radeon HD 4870 X2		350 Watts
	Difference: 250 Watts (250%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4870 X2 is 122% faster than the Radeon R7 360 overall, because of its higher data rate. (explain)

Radeon HD 4870 X2		230400 MB/sec
Radeon R7 360		104000 MB/sec
	Difference: 126400 (122%)

Texel Rate

The Radeon HD 4870 X2 should be a bit (about 19%) more effective at anisotropic filtering than the Radeon R7 360. (explain)

Radeon HD 4870 X2		60000 Mtexels/sec
Radeon R7 360		50400 Mtexels/sec
	Difference: 9600 (19%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 4870 X2 is the winner, by far. (explain)

Radeon HD 4870 X2		24000 Mpixels/sec
Radeon R7 360		16800 Mpixels/sec
	Difference: 7200 (43%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transported past the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number is calculated by multiplying the total amount 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 handling 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 card can possibly record to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.