GeForce GTX 980 Ti vs Radeon HD 7990

Intro

Compare those specifications to the Radeon HD 7990, which has core speeds of 950 MHz on the GPU, and 1500 MHz on the 3072 MB of GDDR5 RAM. It features 2048 SPUs along with 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 GTX 980 Ti		17120 points
Radeon HD 7990		15520 points
	Difference: 1600 (10%)

Zcash Mining Hash Rate

Radeon HD 7990		513 Sol/s
GeForce GTX 980 Ti		425 Sol/s
	Difference: 88 (21%)

Ethereum Mining Hash Rate

Radeon HD 7990		32 Mh/s
GeForce GTX 980 Ti		22 Mh/s
	Difference: 10 (45%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 980 Ti		250 Watts
Radeon HD 7990		375 Watts
	Difference: 125 Watts (50%)

Memory Bandwidth

The Radeon HD 7990 should in theory perform much faster than the GeForce GTX 980 Ti overall. (explain)

Radeon HD 7990		576000 MB/sec
GeForce GTX 980 Ti		336000 MB/sec
	Difference: 240000 (71%)

Texel Rate

The Radeon HD 7990 should be a lot (more or less 38%) more effective at texture filtering than the GeForce GTX 980 Ti. (explain)

Radeon HD 7990		243200 Mtexels/sec
GeForce GTX 980 Ti		176000 Mtexels/sec
	Difference: 67200 (38%)

Pixel Rate

The GeForce GTX 980 Ti is a lot (more or less 58%) more effective at anti-aliasing than the Radeon HD 7990, and also able to handle higher resolutions without losing too much performance. (explain)

GeForce GTX 980 Ti		96000 Mpixels/sec
Radeon HD 7990		60800 Mpixels/sec
	Difference: 35200 (58%)

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 megabytes per second) that can be transported over the external memory interface in one second. It's worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to its 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 clock 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 output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.