Radeon HD 5870 vs Radeon R7 370 2G

Intro

Compare that to the Radeon R7 370 2G, which features a GPU core clock speed of 975 MHz, and 2048 MB of GDDR5 memory set to run at 1400 MHz through a 256-bit bus. It also is made up of 1024 Stream Processors, 64 Texture Address Units, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 370 2G		110 Watts
Radeon HD 5870		188 Watts
	Difference: 78 Watts (71%)

Memory Bandwidth

In theory, the Radeon R7 370 2G should perform a small bit faster than the Radeon HD 5870 in general. (explain)

Radeon R7 370 2G		179200 MB/sec
Radeon HD 5870		153600 MB/sec
	Difference: 25600 (17%)

Texel Rate

The Radeon HD 5870 will be a bit (more or less 9%) faster with regards to AF than the Radeon R7 370 2G. (explain)

Radeon HD 5870		68000 Mtexels/sec
Radeon R7 370 2G		62400 Mtexels/sec
	Difference: 5600 (9%)

Pixel Rate

The Radeon R7 370 2G will be a little bit (about 15%) better at AA than the Radeon HD 5870, and also capable of handling higher resolutions without slowing down too much. (explain)

Radeon R7 370 2G		31200 Mpixels/sec
Radeon HD 5870		27200 Mpixels/sec
	Difference: 4000 (15%)

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 maximum amount of information (measured in MB per second) that can be moved over the external memory interface within a second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour 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 rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.