GeForce GTX 1070 Ti vs Radeon HD 7990

Intro

Compare that to the Radeon HD 7990, which makes use of a 28 nm design. AMD has clocked the core speed at 950 MHz. The GDDR5 memory works at a frequency of 1500 MHz on this specific card. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

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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 GTX 1070 Ti		19808 points
Radeon HD 7990		15520 points
	Difference: 4288 (28%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1070 Ti		180 Watts
Radeon HD 7990		375 Watts
	Difference: 195 Watts (108%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7990 should be 120% faster than the GeForce GTX 1070 Ti in general, due to its higher bandwidth. (explain)

Radeon HD 7990		576000 MB/sec
GeForce GTX 1070 Ti		262144 MB/sec
	Difference: 313856 (120%)

Texel Rate

The GeForce GTX 1070 Ti is just a bit (about 0%) more effective at AF than the Radeon HD 7990. (explain)

GeForce GTX 1070 Ti		244264 Mtexels/sec
Radeon HD 7990		243200 Mtexels/sec
	Difference: 1064 (0%)

Pixel Rate

The GeForce GTX 1070 Ti is much (approximately 69%) better at anti-aliasing than the Radeon HD 7990, and also capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 1070 Ti		102848 Mpixels/sec
Radeon HD 7990		60800 Mpixels/sec
	Difference: 42048 (69%)

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 maximum amount of data (measured in MB per second) that can be transported over the external memory interface within a second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed in one second. This figure is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

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