Radeon HD 4870 512MB vs Radeon R7 M360

Intro

Compare all that to the Radeon R7 M360, which comes with a clock frequency of 1125 MHz and a DDR3 memory frequency of 1000 MHz. It also features a 64-bit bus, and makes use of a 28 nm design. It features 384 SPUs, 24 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 4870 512MB is 620% quicker than the Radeon R7 M360 overall, because of its higher data rate. (explain)

Radeon HD 4870 512MB		115200 MB/sec
Radeon R7 M360		16000 MB/sec
	Difference: 99200 (620%)

Texel Rate

The Radeon HD 4870 512MB is a bit (about 11%) better at texture filtering than the Radeon R7 M360. (explain)

Radeon HD 4870 512MB		30000 Mtexels/sec
Radeon R7 M360		27000 Mtexels/sec
	Difference: 3000 (11%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon HD 4870 512MB is the winner, by far. (explain)

Radeon HD 4870 512MB		12000 Mpixels/sec
Radeon R7 M360		9000 Mpixels/sec
	Difference: 3000 (33%)

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 (counted in MB per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR memory, the result should be multiplied by 2 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 anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one 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 figure is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.