GeForce GTX 1070 vs Radeon HD 7990

Intro

Compare all that to the Radeon HD 7990, which makes use of a 28 nm design. AMD has set the core frequency at 950 MHz. The GDDR5 memory runs at a speed of 1500 MHz on this particular card. It features 2048 SPUs along with 128 Texture Address Units and 32 ROPs.

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		18174 points
Radeon HD 7990		15520 points
	Difference: 2654 (17%)

Zcash Mining Hash Rate

Radeon HD 7990		513 Sol/s
GeForce GTX 1070		436 Sol/s
	Difference: 77 (18%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 1070		150 Watts
Radeon HD 7990		375 Watts
	Difference: 225 Watts (150%)

Memory Bandwidth

The Radeon HD 7990 should in theory be much faster than the GeForce GTX 1070 in general. (explain)

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

Texel Rate

The Radeon HD 7990 should be a lot (about 35%) more effective at AF than the GeForce GTX 1070. (explain)

Radeon HD 7990		243200 Mtexels/sec
GeForce GTX 1070		180720 Mtexels/sec
	Difference: 62480 (35%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 1070 is superior to the Radeon HD 7990, by a large margin. (explain)

GeForce GTX 1070		96384 Mpixels/sec
Radeon HD 7990		60800 Mpixels/sec
	Difference: 35584 (59%)

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 max amount of information (counted in megabytes per second) that can be transported across the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the memory bandwidth, 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 amount of texture map elements (texels) that are processed in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of 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 rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.