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GeForce GTX 560 vs Radeon HD 7990

Intro

The GeForce GTX 560 features a core clock frequency of 810 MHz and a GDDR5 memory speed of 1001 MHz. It also features a 256-bit bus, and uses a 40 nm design. It features 336 SPUs, 56 Texture Address Units, and 32 ROPs.

Compare all of that to the Radeon HD 7990, which has a core clock speed of 950 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 384-bit memory bus, and uses a 28 nm design. It features 2048 SPUs, 128 TAUs, 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 560 3030 points
Difference: 12490 (412%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560 150 Watts
Radeon HD 7990 375 Watts
Difference: 225 Watts (150%)

Memory Bandwidth

The Radeon HD 7990 should theoretically be much faster than the GeForce GTX 560 in general. (explain)

Radeon HD 7990 576000 MB/sec
GeForce GTX 560 128128 MB/sec
Difference: 447872 (350%)

Texel Rate

The Radeon HD 7990 will be much (about 436%) more effective at AF than the GeForce GTX 560. (explain)

Radeon HD 7990 243200 Mtexels/sec
GeForce GTX 560 45360 Mtexels/sec
Difference: 197840 (436%)

Pixel Rate

The Radeon HD 7990 should be much (approximately 135%) faster with regards to FSAA than the GeForce GTX 560, and able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 7990 60800 Mpixels/sec
GeForce GTX 560 25920 Mpixels/sec
Difference: 34880 (135%)

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 560

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 560 Radeon HD 7990
Manufacturer nVidia AMD
Year May 2011 April 2013
Code Name GF114 Malta
Memory 1024 MB 3072 MB (x2)
Core Speed 810 MHz 950 MHz (x2)
Memory Speed 4004 MHz 6000 MHz (x2)
Power (Max TDP) 150 watts 375 watts
Bandwidth 128128 MB/sec 576000 MB/sec
Texel Rate 45360 Mtexels/sec 243200 Mtexels/sec
Pixel Rate 25920 Mpixels/sec 60800 Mpixels/sec
Unified Shaders 336 2048 (x2)
Texture Mapping Units 56 128 (x2)
Render Output Units 32 32 (x2)
Bus Type GDDR5 GDDR5
Bus Width 256-bit 384-bit (x2)
Fab Process 40 nm 28 nm
Transistors 1950 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: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This is calculated by multiplying the total number of texture units by the core clock 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 processed in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GTX 560

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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