GeForce RTX 4070 Ti vs Radeon HD 7990

Intro

Compare those specifications to the Radeon HD 7990, which has a GPU core clock speed of 950 MHz, and 3072 MB of GDDR5 memory running at 1500 MHz through a 384-bit bus. It also is made up of 2048 SPUs, 128 TAUs, and 32 ROPs.

Display Graphs

Hide Graphs

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 is 12% quicker than the GeForce RTX 4070 Ti in general, because of its greater bandwidth. (explain)

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

Texel Rate

The GeForce RTX 4070 Ti is much (more or less 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 a better choice, by a large margin. (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 max amount of information (in units of MB per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total amount of 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 per second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory per 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 - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate is also dependant 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 get to the max fill rate.