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GeForce RTX 2080 Ti vs Radeon HD 7990

Intro

The GeForce RTX 2080 Ti has a clock frequency of 1350 MHz and a GDDR6 memory speed of 14 MHz. It also makes use of a 352-bit memory bus, and uses a 12 nm design. It is made up of 4352 SPUs, 272 Texture Address Units, and 88 ROPs.

Compare all of that to the Radeon HD 7990, which has core clock 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.

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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 RTX 2080 Ti 31381 points
Radeon HD 7990 15520 points
Difference: 15861 (102%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce RTX 2080 Ti 250 Watts
Radeon HD 7990 375 Watts
Difference: 125 Watts (50%)

Memory Bandwidth

The GeForce RTX 2080 Ti should in theory perform a bit faster than the Radeon HD 7990 overall. (explain)

GeForce RTX 2080 Ti 630784 MB/sec
Radeon HD 7990 576000 MB/sec
Difference: 54784 (10%)

Texel Rate

The GeForce RTX 2080 Ti will be quite a bit (approximately 51%) faster with regards to texture filtering than the Radeon HD 7990. (explain)

GeForce RTX 2080 Ti 367200 Mtexels/sec
Radeon HD 7990 243200 Mtexels/sec
Difference: 124000 (51%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce RTX 2080 Ti is superior to the Radeon HD 7990, by far. (explain)

GeForce RTX 2080 Ti 118800 Mpixels/sec
Radeon HD 7990 60800 Mpixels/sec
Difference: 58000 (95%)

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

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GeForce RTX 2080 Ti

Amazon.com

Check prices at:

Radeon HD 7990

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

Specifications

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Model GeForce RTX 2080 Ti Radeon HD 7990
Manufacturer nVidia AMD
Year September 2018 April 2013
Code Name TU102-300A-K1-A1 Malta
Memory 11264 MB 3072 MB (x2)
Core Speed 1350 MHz 950 MHz (x2)
Memory Speed 14 GB/s 6000 MHz (x2)
Power (Max TDP) 250 watts 375 watts
Bandwidth 630784 MB/sec 576000 MB/sec
Texel Rate 367200 Mtexels/sec 243200 Mtexels/sec
Pixel Rate 118800 Mpixels/sec 60800 Mpixels/sec
Unified Shaders 4352 2048 (x2)
Texture Mapping Units 272 128 (x2)
Render Output Units 88 32 (x2)
Bus Type GDDR6 GDDR5
Bus Width 352-bit 384-bit (x2)
Fab Process 12 nm 28 nm
Transistors (Unknown) million 4313 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 12 DirectX 11.1
OpenGL Version OpenGL 4.6 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the card's bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better 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 can be applied per second. This is worked out 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 video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce RTX 2080 Ti

Amazon.com

Check prices at:

Radeon HD 7990

Amazon.com

Check prices at:

Please note that the price comparisons are based on search keywords - sometimes it might show cards with very similar names that are not exactly the same as the one chosen in the comparison. We do try to filter out the wrong results as best we can, though.

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