GeForce GTX 1630 vs Radeon HD 7790

Intro

Compare all that to the Radeon HD 7790, which comes with GPU core speed of 1000 MHz, and 1024 MB of GDDR5 memory running at 1500 MHz through a 128-bit bus. It also is comprised of 896 Stream Processors, 56 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1630		75 Watts
Radeon HD 7790		85 Watts
	Difference: 10 Watts (13%)

Memory Bandwidth

In theory, the GeForce GTX 1630 will be 2% faster than the Radeon HD 7790 in general, because of its higher bandwidth. (explain)

GeForce GTX 1630		98304 MB/sec
Radeon HD 7790		96000 MB/sec
	Difference: 2304 (2%)

Texel Rate

The Radeon HD 7790 will be a little bit (more or less 1%) faster with regards to AF than the GeForce GTX 1630. (explain)

Radeon HD 7790		56000 Mtexels/sec
GeForce GTX 1630		55680 Mtexels/sec
	Difference: 320 (1%)

Pixel Rate

The GeForce GTX 1630 will be quite a bit (about 74%) more effective at full screen anti-aliasing than the Radeon HD 7790, and also able to handle higher resolutions more effectively. (explain)

GeForce GTX 1630		27840 Mpixels/sec
Radeon HD 7790		16000 Mpixels/sec
	Difference: 11840 (74%)

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 information (measured in MB per second) that can be moved across the external memory interface in a second. It's worked out by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.