Radeon HD 7990 vs Radeon R9 Fury X

Intro

Compare those specs to the Radeon R9 Fury X, which features a core clock speed of 1050 MHz and a HBM memory speed of 500 MHz. It also makes use of a 4096-bit memory bus, and makes use of a 28 nm design. It features 4096 SPUs, 256 Texture Address Units, and 64 Raster Operation 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

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

The Radeon HD 7990 should theoretically perform a small 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 will be a small bit (approximately 11%) more effective 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

The Radeon R9 Fury X should be a bit (more or less 11%) more effective at full screen anti-aliasing than the Radeon HD 7990, and will be able to handle higher screen resolutions more effectively. (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: Memory bandwidth is the max amount of data (in units of MB per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the interface width by its memory speed. In the case of DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly write to its local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.