GeForce RTX 3070 Ti vs Radeon HD 7990

Intro

Compare those specifications to the Radeon HD 7990, which comes with a GPU core clock speed of 950 MHz, and 3072 MB of GDDR5 RAM set to run at 1500 MHz through a 384-bit bus. It also features 2048 SPUs, 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 RTX 3070 Ti		290 Watts
Radeon HD 7990		375 Watts
	Difference: 85 Watts (29%)

Memory Bandwidth

Theoretically speaking, the GeForce RTX 3070 Ti should be 8% quicker than the Radeon HD 7990 overall, due to its greater bandwidth. (explain)

GeForce RTX 3070 Ti		622899 MB/sec
Radeon HD 7990		576000 MB/sec
	Difference: 46899 (8%)

Texel Rate

The GeForce RTX 3070 Ti is a lot (approximately 24%) better at texture filtering than the Radeon HD 7990. (explain)

GeForce RTX 3070 Ti		302400 Mtexels/sec
Radeon HD 7990		243200 Mtexels/sec
	Difference: 59200 (24%)

Pixel Rate

The GeForce RTX 3070 Ti should be quite a bit (approximately 149%) better at FSAA than the Radeon HD 7990, and also will be capable of handling higher resolutions without slowing down too much. (explain)

GeForce RTX 3070 Ti		151200 Mpixels/sec
Radeon HD 7990		60800 Mpixels/sec
	Difference: 90400 (149%)

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 maximum amount of information (measured in MB per second) that can be moved past the external memory interface in one second. The number is worked out by multiplying the interface width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

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