GeForce GTX 1050 3GB vs Radeon HD 7990

Intro

Compare those specs to the Radeon HD 7990, which comes with a GPU core clock speed of 950 MHz, and 3072 MB of GDDR5 memory set to run at 1500 MHz through a 384-bit bus. It also is comprised of 2048 Stream Processors, 128 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1050 3GB		75 Watts
Radeon HD 7990		375 Watts
	Difference: 300 Watts (400%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7990 is 570% faster than the GeForce GTX 1050 3GB overall, because of its greater data rate. (explain)

Radeon HD 7990		576000 MB/sec
GeForce GTX 1050 3GB		86016 MB/sec
	Difference: 489984 (570%)

Texel Rate

The Radeon HD 7990 will be quite a bit (approximately 264%) better at anisotropic filtering than the GeForce GTX 1050 3GB. (explain)

Radeon HD 7990		243200 Mtexels/sec
GeForce GTX 1050 3GB		66816 Mtexels/sec
	Difference: 176384 (264%)

Pixel Rate

The Radeon HD 7990 will be much (approximately 82%) more effective at FSAA than the GeForce GTX 1050 3GB, and capable of handling higher screen resolutions more effectively. (explain)

Radeon HD 7990		60800 Mpixels/sec
GeForce GTX 1050 3GB		33408 Mpixels/sec
	Difference: 27392 (82%)

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 (measured in megabytes per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.