Radeon HD 7990 vs Radeon R9 Fury X

Intro

Compare those specifications to the Radeon R9 Fury X, which makes use of a 28 nm design. AMD has clocked the core speed at 1050 MHz. The HBM RAM works at a frequency of 500 MHz on this particular card. It features 4096 SPUs as well as 256 Texture Address Units and 64 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

Radeon HD 7990		15520 points
Radeon R9 Fury X		14793 points
	Difference: 727 (5%)

Ethereum Mining Hash Rate

Radeon HD 7990		32 Mh/s
Radeon R9 Fury X		30 Mh/s
	Difference: 2 (7%)

Zcash Mining Hash Rate

Radeon HD 7990		513 Sol/s
Radeon R9 Fury X		450 Sol/s
	Difference: 63 (14%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 Fury X		275 Watts
Radeon HD 7990		375 Watts
	Difference: 100 Watts (36%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7990 should perform a bit faster than the Radeon R9 Fury X overall. (explain)

Radeon HD 7990		576000 MB/sec
Radeon R9 Fury X		512000 MB/sec
	Difference: 64000 (13%)

Texel Rate

The Radeon R9 Fury X should be a small bit (more or less 11%) better at anisotropic filtering than the Radeon HD 7990. (explain)

Radeon R9 Fury X		268800 Mtexels/sec
Radeon HD 7990		243200 Mtexels/sec
	Difference: 25600 (11%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 Fury X is the winner, not by a very large margin though. (explain)

Radeon R9 Fury X		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 (counted in megabytes per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better 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 number of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.