Radeon HD 4870 512MB 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 is made up of 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 512MB		150 Watts
	Difference: 50 Watts (50%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 4870 512MB is 11% quicker than the Radeon R7 360 overall, due to its higher bandwidth. (explain)

Radeon HD 4870 512MB		115200 MB/sec
Radeon R7 360		104000 MB/sec
	Difference: 11200 (11%)

Texel Rate

The Radeon R7 360 is quite a bit (about 68%) more effective at texture filtering than the Radeon HD 4870 512MB. (explain)

Radeon R7 360		50400 Mtexels/sec
Radeon HD 4870 512MB		30000 Mtexels/sec
	Difference: 20400 (68%)

Pixel Rate

The Radeon R7 360 should be a lot (more or less 40%) faster with regards to anti-aliasing than the Radeon HD 4870 512MB, and will be capable of handling higher resolutions without slowing down too much. (explain)

Radeon R7 360		16800 Mpixels/sec
Radeon HD 4870 512MB		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 MB per second) that can be moved past the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This number is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.