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GeForce GTX 550 Ti vs Radeon HD 7990

Intro

The GeForce GTX 550 Ti comes with a clock speed of 900 MHz and a GDDR5 memory speed of 1026 MHz. It also features a 192-bit memory bus, and uses a 40 nm design. It is comprised of 192 SPUs, 32 TAUs, and 24 Raster Operation Units.

Compare those specifications to the Radeon HD 7990, which uses a 28 nm design. AMD has set the core speed at 950 MHz. The GDDR5 memory works at a frequency of 1500 MHz on this specific model. It features 2048 SPUs along with 128 Texture Address Units and 32 Rasterization Operator Units.

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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 550 Ti 1897 points
Difference: 13623 (718%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 550 Ti 116 Watts
Radeon HD 7990 375 Watts
Difference: 259 Watts (223%)

Memory Bandwidth

The Radeon HD 7990, in theory, should perform quite a bit faster than the GeForce GTX 550 Ti overall. (explain)

Radeon HD 7990 576000 MB/sec
GeForce GTX 550 Ti 98496 MB/sec
Difference: 477504 (485%)

Texel Rate

The Radeon HD 7990 will be quite a bit (more or less 744%) faster with regards to anisotropic filtering than the GeForce GTX 550 Ti. (explain)

Radeon HD 7990 243200 Mtexels/sec
GeForce GTX 550 Ti 28800 Mtexels/sec
Difference: 214400 (744%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 7990 is a better choice, and very much so. (explain)

Radeon HD 7990 60800 Mpixels/sec
GeForce GTX 550 Ti 21600 Mpixels/sec
Difference: 39200 (181%)

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 550 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 GTX 550 Ti Radeon HD 7990
Manufacturer nVidia AMD
Year March 2011 April 2013
Code Name GF116 Malta
Memory 1024 MB 3072 MB (x2)
Core Speed 900 MHz 950 MHz (x2)
Memory Speed 4104 MHz 6000 MHz (x2)
Power (Max TDP) 116 watts 375 watts
Bandwidth 98496 MB/sec 576000 MB/sec
Texel Rate 28800 Mtexels/sec 243200 Mtexels/sec
Pixel Rate 21600 Mpixels/sec 60800 Mpixels/sec
Unified Shaders 192 2048 (x2)
Texture Mapping Units 32 128 (x2)
Render Output Units 24 32 (x2)
Bus Type GDDR5 GDDR5
Bus Width 192-bit 384-bit (x2)
Fab Process 40 nm 28 nm
Transistors 1170 million 4313 million
Bus PCIe 2.1 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 maximum amount of information (in units of MB per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the 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 most pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce GTX 550 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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