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GeForce GTX 590 vs Radeon HD 7990

Intro

The GeForce GTX 590 has a GPU core speed of 607 MHz, and the 1536 MB of GDDR5 memory is set to run at 855 MHz through a 384-bit bus. It also features 512 SPUs, 64 TAUs, and 48 Raster Operation Units.

Compare that to the Radeon HD 7990, which comes with core speeds of 950 MHz on the GPU, and 1500 MHz on the 3072 MB of GDDR5 RAM. It features 2048 SPUs as well as 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

Radeon HD 7990 15520 points
GeForce GTX 590 6680 points
Difference: 8840 (132%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 590 365 Watts
Radeon HD 7990 375 Watts
Difference: 10 Watts (3%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7990 should perform a lot faster than the GeForce GTX 590 in general. (explain)

Radeon HD 7990 576000 MB/sec
GeForce GTX 590 328320 MB/sec
Difference: 247680 (75%)

Texel Rate

The Radeon HD 7990 is a lot (about 213%) more effective at anisotropic filtering than the GeForce GTX 590. (explain)

Radeon HD 7990 243200 Mtexels/sec
GeForce GTX 590 77696 Mtexels/sec
Difference: 165504 (213%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 7990 is a better choice, but only just. (explain)

Radeon HD 7990 60800 Mpixels/sec
GeForce GTX 590 58272 Mpixels/sec
Difference: 2528 (4%)

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 GTX 590

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 GTX 590 Radeon HD 7990
Manufacturer nVidia AMD
Year March 2011 April 2013
Code Name GF110 Malta
Memory 1536 MB (x2) 3072 MB (x2)
Core Speed 607 MHz (x2) 950 MHz (x2)
Memory Speed 3420 MHz (x2) 6000 MHz (x2)
Power (Max TDP) 365 watts 375 watts
Bandwidth 328320 MB/sec 576000 MB/sec
Texel Rate 77696 Mtexels/sec 243200 Mtexels/sec
Pixel Rate 58272 Mpixels/sec 60800 Mpixels/sec
Unified Shaders 512 (x2) 2048 (x2)
Texture Mapping Units 64 (x2) 128 (x2)
Render Output Units 48 (x2) 32 (x2)
Bus Type GDDR5 GDDR5
Bus Width 384-bit (x2) 384-bit (x2)
Fab Process 40 nm 28 nm
Transistors 3000 million 4313 million
Bus PCIe 2.0 x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Bandwidth is the max amount of data (counted in MB per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster 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 number of texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

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

Display Prices

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GeForce GTX 590

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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