GeForce RTX 4070 Ti vs Radeon HD 7990

Intro

Compare those specifications to the Radeon HD 7990, which uses a 28 nm design. AMD has set the core speed at 950 MHz. The GDDR5 memory is set to run at a frequency of 1500 MHz on this specific card. It features 2048 SPUs as well as 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

The Radeon HD 7990 should in theory be just a bit faster than the GeForce RTX 4070 Ti in general. (explain)

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

Texel Rate

The GeForce RTX 4070 Ti should be a lot (about 128%) faster with regards to anisotropic filtering 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 running with lots of anti-aliasing is important to you, then the GeForce RTX 4070 Ti is a better choice, by far. (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: Memory bandwidth is the max amount of information (measured in MB per second) that can be moved over the external memory interface in a second. It is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 number of texture map elements (texels) that can be applied in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.