Radeon HD 5870 vs Radeon R7 370 2G

Intro

Compare those specifications to the Radeon R7 370 2G, which features core speeds of 975 MHz on the GPU, and 1400 MHz on the 2048 MB of GDDR5 memory. It features 1024 SPUs along with 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

Theoretically speaking, the Radeon R7 370 2G should be just a 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 small bit (more or less 9%) faster with regards to texture filtering 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

If running with a high resolution is important to you, then the Radeon R7 370 2G is the winner, not by a very large margin though. (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 data (counted in MB per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This is calculated 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

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