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GeForce GTX 560 Ti 448 vs Radeon HD 6990

Intro

The GeForce GTX 560 Ti 448 has a GPU core clock speed of 732 MHz, and the 1280 MB of GDDR5 memory is set to run at 900 MHz through a 320-bit bus. It also features 448 Stream Processors, 56 TAUs, and 40 Raster Operation Units.

Compare those specifications to the Radeon HD 6990, which has GPU core speed of 830 MHz, and 2048 MB of GDDR5 RAM set to run at 1250 MHz through a 256-bit bus. It also is made up of 1536 SPUs, 96 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 6990 5820 points
GeForce GTX 560 Ti 448 4200 points
Difference: 1620 (39%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560 Ti 448 210 Watts
Radeon HD 6990 375 Watts
Difference: 165 Watts (79%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6990 should be a lot faster than the GeForce GTX 560 Ti 448 overall. (explain)

Radeon HD 6990 320000 MB/sec
GeForce GTX 560 Ti 448 144000 MB/sec
Difference: 176000 (122%)

Texel Rate

The Radeon HD 6990 will be a lot (more or less 289%) more effective at texture filtering than the GeForce GTX 560 Ti 448. (explain)

Radeon HD 6990 159360 Mtexels/sec
GeForce GTX 560 Ti 448 40992 Mtexels/sec
Difference: 118368 (289%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 6990 is the winner, by far. (explain)

Radeon HD 6990 53120 Mpixels/sec
GeForce GTX 560 Ti 448 29280 Mpixels/sec
Difference: 23840 (81%)

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 Ti 448

Amazon.com

Check prices at:

Radeon HD 6990

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 Ti 448 Radeon HD 6990
Manufacturer nVidia AMD
Year December 2011 March 2011
Code Name GF110 Antilles
Memory 1280 MB 2048 MB (x2)
Core Speed 732 MHz 830 MHz (x2)
Memory Speed 3600 MHz 5000 MHz (x2)
Power (Max TDP) 210 watts 375 watts
Bandwidth 144000 MB/sec 320000 MB/sec
Texel Rate 40992 Mtexels/sec 159360 Mtexels/sec
Pixel Rate 29280 Mpixels/sec 53120 Mpixels/sec
Unified Shaders 448 1536 (x2)
Texture Mapping Units 56 96 (x2)
Render Output Units 40 32 (x2)
Bus Type GDDR5 GDDR5
Bus Width 320-bit 256-bit (x2)
Fab Process 40 nm 40 nm
Transistors 3000 million 2640 million
Bus PCIe 2.0 x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.2 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in MB per second) that can be transported across the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory speed. In the case of DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably 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 GTX 560 Ti 448

Amazon.com

Check prices at:

Radeon HD 6990

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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