Radeon HD 6790 vs Radeon R7 370 4G

Intro

Compare those specs to the Radeon R7 370 4G, which comes with a GPU core clock speed of 975 MHz, and 4096 MB of GDDR5 memory set to run at 1400 MHz through a 256-bit bus. It also is comprised of 1024 SPUs, 64 TAUs, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 370 4G		110 Watts
Radeon HD 6790		150 Watts
	Difference: 40 Watts (36%)

Memory Bandwidth

As far as performance goes, the Radeon R7 370 4G should in theory be much better than the Radeon HD 6790 overall. (explain)

Radeon R7 370 4G		179200 MB/sec
Radeon HD 6790		134400 MB/sec
	Difference: 44800 (33%)

Texel Rate

The Radeon R7 370 4G will be quite a bit (approximately 86%) more effective at AF than the Radeon HD 6790. (explain)

Radeon R7 370 4G		62400 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 28800 (86%)

Pixel Rate

The Radeon R7 370 4G should be much (approximately 132%) more effective at full screen anti-aliasing than the Radeon HD 6790, and also able to handle higher resolutions better. (explain)

Radeon R7 370 4G		31200 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 17760 (132%)

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 max amount of data (in units of MB per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount 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 rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.