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Radeon HD 7990 vs Radeon Vega Frontier Edition

Intro

The Radeon HD 7990 has a clock speed of 950 MHz and a GDDR5 memory speed of 1500 MHz. It also features a 384-bit memory bus, and uses a 28 nm design. It is comprised of 2048 SPUs, 128 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Radeon Vega Frontier Edition, which has core clock speeds of 1382 MHz on the GPU, and 1890 MHz on the 16384 MB of HBM2 RAM. It features 4096 SPUs along with 256 TAUs and 64 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

Radeon Vega Frontier Edition 21379 points
Radeon HD 7990 15520 points
Difference: 5859 (38%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon Vega Frontier Edition 300 Watts
Radeon HD 7990 375 Watts
Difference: 75 Watts (25%)

Memory Bandwidth

The Radeon HD 7990, in theory, should perform just a bit faster than the Radeon Vega Frontier Edition overall. (explain)

Radeon HD 7990 576000 MB/sec
Radeon Vega Frontier Edition 495452 MB/sec
Difference: 80548 (16%)

Texel Rate

The Radeon Vega Frontier Edition should be a lot (more or less 45%) more effective at AF than the Radeon HD 7990. (explain)

Radeon Vega Frontier Edition 353792 Mtexels/sec
Radeon HD 7990 243200 Mtexels/sec
Difference: 110592 (45%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon Vega Frontier Edition is the winner, by a large margin. (explain)

Radeon Vega Frontier Edition 88448 Mpixels/sec
Radeon HD 7990 60800 Mpixels/sec
Difference: 27648 (45%)

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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Radeon HD 7990

Amazon.com

Check prices at:

Radeon Vega Frontier Edition

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 Radeon HD 7990 Radeon Vega Frontier Edition
Manufacturer AMD AMD
Year April 2013 June 2017
Code Name Malta Vega 10 XTX
Memory 3072 MB (x2) 16384 MB
Core Speed 950 MHz (x2) 1382 MHz
Memory Speed 6000 MHz (x2) 1890 MHz
Power (Max TDP) 375 watts 300 watts
Bandwidth 576000 MB/sec 495452 MB/sec
Texel Rate 243200 Mtexels/sec 353792 Mtexels/sec
Pixel Rate 60800 Mpixels/sec 88448 Mpixels/sec
Unified Shaders 2048 (x2) 4096
Texture Mapping Units 128 (x2) 256
Render Output Units 32 (x2) 64
Bus Type GDDR5 HBM2
Bus Width 384-bit (x2) 2048-bit
Fab Process 28 nm 14 nm
Transistors 4313 million 12500 million
Bus PCIe 3.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11.1 DirectX 12.0
OpenGL Version OpenGL 4.3 OpenGL 4.5

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transferred past the external memory interface in one second. The number is calculated by multiplying the interface width by its memory clock speed. If it uses DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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Radeon HD 7990

Amazon.com

Check prices at:

Radeon Vega Frontier Edition

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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