Radeon HD 5870 vs Radeon R9 M375

Intro

Compare all that to the Radeon R9 M375, which makes use of a 28 nm design. AMD has set the core speed at 1015 MHz. The DDR3 memory runs at a speed of 1100 MHz on this specific model. It features 640 SPUs as well as 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 5870 will be 336% quicker than the Radeon R9 M375 in general, due to its higher data rate. (explain)

Radeon HD 5870		153600 MB/sec
Radeon R9 M375		35200 MB/sec
	Difference: 118400 (336%)

Texel Rate

The Radeon HD 5870 is quite a bit (more or less 67%) more effective at texture filtering than the Radeon R9 M375. (explain)

Radeon HD 5870		68000 Mtexels/sec
Radeon R9 M375		40600 Mtexels/sec
	Difference: 27400 (67%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon HD 5870 is the winner, by a large margin. (explain)

Radeon HD 5870		27200 Mpixels/sec
Radeon R9 M375		16240 Mpixels/sec
	Difference: 10960 (67%)

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 largest amount of information (in units of MB per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This number is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the 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 video card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.