GeForce RTX 2080 Ti vs Radeon HD 7990

Intro

Compare those specifications to the Radeon HD 7990, which comes with a clock speed of 950 MHz and a GDDR5 memory frequency of 1500 MHz. It also features a 384-bit memory bus, and makes use of a 28 nm design. It features 2048 SPUs, 128 Texture Address Units, and 32 ROPs.

Display Graphs

Hide Graphs

Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce RTX 2080 Ti		31381 points
Radeon HD 7990		15520 points
	Difference: 15861 (102%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 2080 Ti		250 Watts
Radeon HD 7990		375 Watts
	Difference: 125 Watts (50%)

Memory Bandwidth

In theory, the GeForce RTX 2080 Ti is 10% quicker than the Radeon HD 7990 overall, due to its greater data rate. (explain)

GeForce RTX 2080 Ti		630784 MB/sec
Radeon HD 7990		576000 MB/sec
	Difference: 54784 (10%)

Texel Rate

The GeForce RTX 2080 Ti will be a lot (approximately 51%) better at AF than the Radeon HD 7990. (explain)

GeForce RTX 2080 Ti		367200 Mtexels/sec
Radeon HD 7990		243200 Mtexels/sec
	Difference: 124000 (51%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce RTX 2080 Ti is the winner, by a large margin. (explain)

GeForce RTX 2080 Ti		118800 Mpixels/sec
Radeon HD 7990		60800 Mpixels/sec
	Difference: 58000 (95%)

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 (in units of MB per second) that can be transported across the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it should 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 texture map elements (texels) that are processed in one second. This number 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 graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.