Radeon HD 7790 vs Radeon R7 370 4G

Intro

Compare those specs to the Radeon R7 370 4G, which comes with core speeds of 975 MHz on the GPU, and 1400 MHz on the 4096 MB of GDDR5 memory. It features 1024 SPUs as well as 64 TAUs and 32 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7790		85 Watts
Radeon R7 370 4G		110 Watts
	Difference: 25 Watts (29%)

Memory Bandwidth

Performance-wise, the Radeon R7 370 4G should theoretically be a lot better than the Radeon HD 7790 overall. (explain)

Radeon R7 370 4G		179200 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 83200 (87%)

Texel Rate

The Radeon R7 370 4G is just a bit (approximately 11%) more effective at AF than the Radeon HD 7790. (explain)

Radeon R7 370 4G		62400 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 6400 (11%)

Pixel Rate

The Radeon R7 370 4G will be much (about 95%) more effective at full screen anti-aliasing than the Radeon HD 7790, and should be capable of handling higher screen resolutions better. (explain)

Radeon R7 370 4G		31200 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 15200 (95%)

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 (measured in MB per second) that can be transferred past the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. If the card has DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The higher the texel rate, the better the video card will be at 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 video card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.