Radeon HD 6870 vs Radeon R7 370 4G

Intro

Compare all that to the Radeon R7 370 4G, which has GPU clock speed of 975 MHz, and 4096 MB of GDDR5 RAM set to run at 1400 MHz through a 256-bit bus. It also is comprised of 1024 Stream Processors, 64 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 370 4G		110 Watts
Radeon HD 6870		151 Watts
	Difference: 41 Watts (37%)

Memory Bandwidth

Theoretically speaking, the Radeon R7 370 4G should be 33% quicker than the Radeon HD 6870 in general, because of its greater bandwidth. (explain)

Radeon R7 370 4G		179200 MB/sec
Radeon HD 6870		134400 MB/sec
	Difference: 44800 (33%)

Texel Rate

The Radeon R7 370 4G should be a lot (more or less 24%) better at AF than the Radeon HD 6870. (explain)

Radeon R7 370 4G		62400 Mtexels/sec
Radeon HD 6870		50400 Mtexels/sec
	Difference: 12000 (24%)

Pixel Rate

The Radeon R7 370 4G is a small bit (approximately 8%) more effective at AA than the Radeon HD 6870, and also will be capable of handling higher resolutions better. (explain)

Radeon R7 370 4G		31200 Mpixels/sec
Radeon HD 6870		28800 Mpixels/sec
	Difference: 2400 (8%)

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 megabytes per second) that can be transferred past the external memory interface within a second. It's worked out by multiplying the interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster 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 are applied in one second. This number is worked out by multiplying the total number of 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 processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.