GeForce GTX 1630 vs Radeon HD 7990

Intro

Compare all that to the Radeon HD 7990, which uses a 28 nm design. AMD has clocked the core frequency at 950 MHz. The GDDR5 memory works at a speed of 1500 MHz on this specific card. It features 2048 SPUs along with 128 TAUs and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1630		75 Watts
Radeon HD 7990		375 Watts
	Difference: 300 Watts (400%)

Memory Bandwidth

In theory, the Radeon HD 7990 is 486% quicker than the GeForce GTX 1630 overall, due to its greater bandwidth. (explain)

Radeon HD 7990		576000 MB/sec
GeForce GTX 1630		98304 MB/sec
	Difference: 477696 (486%)

Texel Rate

The Radeon HD 7990 is quite a bit (about 337%) faster with regards to anisotropic filtering than the GeForce GTX 1630. (explain)

Radeon HD 7990		243200 Mtexels/sec
GeForce GTX 1630		55680 Mtexels/sec
	Difference: 187520 (337%)

Pixel Rate

The Radeon HD 7990 should be much (approximately 118%) better at anti-aliasing than the GeForce GTX 1630, and also able to handle higher resolutions better. (explain)

Radeon HD 7990		60800 Mpixels/sec
GeForce GTX 1630		27840 Mpixels/sec
	Difference: 32960 (118%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the max amount of data (counted in megabytes per second) that can be transferred past the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better 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 texture map elements (texels) that can be processed in one second. This figure is calculated by multiplying the total texture units 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 applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends 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 reach the maximum fill rate.