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GeForce GTX 560 Ti vs Radeon HD 4890 2GB

Intro

The GeForce GTX 560 Ti has a core clock frequency of 822 MHz and a GDDR5 memory speed of 1002 MHz. It also makes use of a 256-bit memory bus, and uses a 40 nm design. It features 384 SPUs, 64 Texture Address Units, and 32 ROPs.

Compare all of that to the Radeon HD 4890 2GB, which comes with GPU clock speed of 1000 MHz, and 2048 MB of GDDR5 RAM running at 975 MHz through a 256-bit bus. It also features 800(160x5) Stream Processors, 40 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560 Ti 170 Watts
Radeon HD 4890 2GB 190 Watts
Difference: 20 Watts (12%)

Memory Bandwidth

Performance-wise, the GeForce GTX 560 Ti should in theory be a small bit better than the Radeon HD 4890 2GB overall. (explain)

GeForce GTX 560 Ti 128256 MB/sec
Radeon HD 4890 2GB 124800 MB/sec
Difference: 3456 (3%)

Texel Rate

The GeForce GTX 560 Ti is a lot (approximately 32%) better at AF than the Radeon HD 4890 2GB. (explain)

GeForce GTX 560 Ti 52608 Mtexels/sec
Radeon HD 4890 2GB 40000 Mtexels/sec
Difference: 12608 (32%)

Pixel Rate

The GeForce GTX 560 Ti will be a lot (more or less 64%) faster with regards to AA than the Radeon HD 4890 2GB, and should be capable of handling higher resolutions better. (explain)

GeForce GTX 560 Ti 26304 Mpixels/sec
Radeon HD 4890 2GB 16000 Mpixels/sec
Difference: 10304 (64%)

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.

Price Comparison

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GeForce GTX 560 Ti

Amazon.com

Check prices at:

Radeon HD 4890 2GB

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 Radeon HD 4890 2GB
Manufacturer nVidia AMD
Year January 2011 Apr 2, 2009
Code Name GF114 RV790 XT
Memory 1024 MB 2048 MB
Core Speed 822 MHz 1000 MHz
Memory Speed 4008 MHz 3900 MHz
Power (Max TDP) 170 watts 190 watts
Bandwidth 128256 MB/sec 124800 MB/sec
Texel Rate 52608 Mtexels/sec 40000 Mtexels/sec
Pixel Rate 26304 Mpixels/sec 16000 Mpixels/sec
Unified Shaders 384 800(160x5)
Texture Mapping Units 64 40
Render Output Units 32 16
Bus Type GDDR5 GDDR5
Bus Width 256-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 1950 million 959 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in MB per second) that can be moved over the external memory interface in a second. The number is calculated by multiplying the card's bus width by its memory clock speed. In the case of DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, 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 are processed in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

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

Display Prices

Hide Prices

GeForce GTX 560 Ti

Amazon.com

Check prices at:

Radeon HD 4890 2GB

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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