Radeon HD 4870 2GB vs Radeon R7 360

Intro

Compare all of that to the Radeon R7 360, which has GPU core 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 2GB		150 Watts
	Difference: 50 Watts (50%)

Memory Bandwidth

The Radeon HD 4870 2GB should theoretically perform a bit faster than the Radeon R7 360 in general. (explain)

Radeon HD 4870 2GB		115200 MB/sec
Radeon R7 360		104000 MB/sec
	Difference: 11200 (11%)

Texel Rate

The Radeon R7 360 will be much (approximately 68%) faster with regards to AF than the Radeon HD 4870 2GB. (explain)

Radeon R7 360		50400 Mtexels/sec
Radeon HD 4870 2GB		30000 Mtexels/sec
	Difference: 20400 (68%)

Pixel Rate

The Radeon R7 360 will be quite a bit (about 40%) better at anti-aliasing than the Radeon HD 4870 2GB, and also should be capable of handling higher resolutions without losing too much performance. (explain)

Radeon R7 360		16800 Mpixels/sec
Radeon HD 4870 2GB		12000 Mpixels/sec
	Difference: 4800 (40%)

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 maximum amount of data (in units of megabytes per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total number of 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 processed per second.

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