GeForce RTX 4070 Ti vs Radeon HD 7990

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 4070 Ti		285 Watts
Radeon HD 7990		375 Watts
	Difference: 90 Watts (32%)

Memory Bandwidth

In theory, the Radeon HD 7990 should be a small bit faster than the GeForce RTX 4070 Ti overall. (explain)

Radeon HD 7990		576000 MB/sec
GeForce RTX 4070 Ti		516096 MB/sec
	Difference: 59904 (12%)

Texel Rate

The GeForce RTX 4070 Ti will be much (approximately 128%) more effective at AF than the Radeon HD 7990. (explain)

GeForce RTX 4070 Ti		554400 Mtexels/sec
Radeon HD 7990		243200 Mtexels/sec
	Difference: 311200 (128%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce RTX 4070 Ti is superior to the Radeon HD 7990, and very much so. (explain)

GeForce RTX 4070 Ti		184800 Mpixels/sec
Radeon HD 7990		60800 Mpixels/sec
	Difference: 124000 (204%)

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 largest amount of data (in units of MB per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. In the case of DDR RAM, the result should be multiplied by 2 once 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The better the texel rate, the better the video 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 that the graphics chip can possibly record to the 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 the core clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.