Radeon HD 7790 vs Radeon R7 370 4G

Intro

Compare all of that to the Radeon R7 370 4G, which has a core clock frequency of 975 MHz and a GDDR5 memory frequency of 1400 MHz. It also features a 256-bit memory bus, and makes use of a 28 nm design. It is made up of 1024 SPUs, 64 Texture Address Units, and 32 ROPs.

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

The Radeon R7 370 4G should in theory be quite a bit faster than the Radeon HD 7790 in general. (explain)

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

Texel Rate

The Radeon R7 370 4G will be a small bit (approximately 11%) faster with regards to anisotropic filtering than the Radeon HD 7790. (explain)

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

Pixel Rate

If running with high levels of AA is important to you, then the Radeon R7 370 4G is the winner, by far. (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: Memory bandwidth is the max amount of data (measured in MB per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the bus width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 applied per second. This is calculated by multiplying the total number of texture units by the core clock 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 applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to 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 memory bandwidth is, the lower the potential to get to the max fill rate.