GeForce GTX 1630 vs Radeon HD 6790

Intro

Compare those specifications to the Radeon HD 6790, which features a core clock speed of 840 MHz and a GDDR5 memory frequency of 1050 MHz. It also features a 256-bit memory bus, and makes use of a 40 nm design. It is comprised of 800 SPUs, 40 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1630		75 Watts
Radeon HD 6790		150 Watts
	Difference: 75 Watts (100%)

Memory Bandwidth

In theory, the Radeon HD 6790 should be 37% quicker than the GeForce GTX 1630 overall, due to its greater data rate. (explain)

Radeon HD 6790		134400 MB/sec
GeForce GTX 1630		98304 MB/sec
	Difference: 36096 (37%)

Texel Rate

The GeForce GTX 1630 will be much (approximately 66%) more effective at texture filtering than the Radeon HD 6790. (explain)

GeForce GTX 1630		55680 Mtexels/sec
Radeon HD 6790		33600 Mtexels/sec
	Difference: 22080 (66%)

Pixel Rate

The GeForce GTX 1630 will be a lot (more or less 107%) better at anti-aliasing than the Radeon HD 6790, and able to handle higher resolutions while still performing well. (explain)

GeForce GTX 1630		27840 Mpixels/sec
Radeon HD 6790		13440 Mpixels/sec
	Difference: 14400 (107%)

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 largest amount of data (measured in MB per second) that can be transferred over the external memory interface in one second. It is worked out by multiplying the interface width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on 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 memory bandwidth is, the lower the potential to get to the max fill rate.