GeForce GTX 970 vs Radeon HD 7990

Intro

Compare those specifications to the Radeon HD 7990, which features core clock speeds of 950 MHz on the GPU, and 1500 MHz on the 3072 MB of GDDR5 RAM. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

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

Radeon HD 7990		15520 points
GeForce GTX 970		10867 points
	Difference: 4653 (43%)

Zcash Mining Hash Rate

Radeon HD 7990		513 Sol/s
GeForce GTX 970		262 Sol/s
	Difference: 251 (96%)

Ethereum Mining Hash Rate

Radeon HD 7990		32 Mh/s
GeForce GTX 970		19 Mh/s
	Difference: 13 (68%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 970		145 Watts
Radeon HD 7990		375 Watts
	Difference: 230 Watts (159%)

Memory Bandwidth

The Radeon HD 7990 should theoretically be a lot faster than the GeForce GTX 970 in general. (explain)

Radeon HD 7990		576000 MB/sec
GeForce GTX 970		224000 MB/sec
	Difference: 352000 (157%)

Texel Rate

The Radeon HD 7990 should be quite a bit (more or less 123%) more effective at anisotropic filtering than the GeForce GTX 970. (explain)

Radeon HD 7990		243200 Mtexels/sec
GeForce GTX 970		109200 Mtexels/sec
	Difference: 134000 (123%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 970 is superior to the Radeon HD 7990, though not by far. (explain)

GeForce GTX 970		67200 Mpixels/sec
Radeon HD 7990		60800 Mpixels/sec
	Difference: 6400 (11%)

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 information (measured in megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs 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 lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.