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GeForce GTX 560 Ti vs Radeon HD 4850 X2 1GB

Intro

The GeForce GTX 560 Ti uses a 40 nm design. nVidia has set the core speed at 822 MHz. The GDDR5 RAM is set to run at a speed of 1002 MHz on this specific model. It features 384 SPUs along with 64 TAUs and 32 Rasterization Operator Units.

Compare all that to the Radeon HD 4850 X2 1GB, which comes with a core clock frequency of 625 MHz and a GDDR3 memory frequency of 993 MHz. It also features a 256-bit bus, and uses a 55 nm design. It is made up of 800(160x5) SPUs, 40 TAUs, and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560 Ti 170 Watts
Radeon HD 4850 X2 1GB 250 Watts
Difference: 80 Watts (47%)

Memory Bandwidth

In theory, the GeForce GTX 560 Ti will be 1% quicker than the Radeon HD 4850 X2 1GB in general, because of its higher data rate. (explain)

GeForce GTX 560 Ti 128256 MB/sec
Radeon HD 4850 X2 1GB 127104 MB/sec
Difference: 1152 (1%)

Texel Rate

The GeForce GTX 560 Ti will be a small bit (about 5%) more effective at texture filtering than the Radeon HD 4850 X2 1GB. (explain)

GeForce GTX 560 Ti 52608 Mtexels/sec
Radeon HD 4850 X2 1GB 50000 Mtexels/sec
Difference: 2608 (5%)

Pixel Rate

The GeForce GTX 560 Ti will be much (approximately 32%) better at full screen anti-aliasing than the Radeon HD 4850 X2 1GB, and also capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 560 Ti 26304 Mpixels/sec
Radeon HD 4850 X2 1GB 20000 Mpixels/sec
Difference: 6304 (32%)

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

Amazon.com

Check prices at:

Radeon HD 4850 X2 1GB

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 4850 X2 1GB
Manufacturer nVidia AMD
Year January 2011 Nov 7, 2008
Code Name GF114 R700
Memory 1024 MB 1024 MB (x2)
Core Speed 822 MHz 625 MHz (x2)
Memory Speed 4008 MHz 1986 MHz (x2)
Power (Max TDP) 170 watts 250 watts
Bandwidth 128256 MB/sec 127104 MB/sec
Texel Rate 52608 Mtexels/sec 50000 Mtexels/sec
Pixel Rate 26304 Mpixels/sec 20000 Mpixels/sec
Unified Shaders 384 800(160x5) (x2)
Texture Mapping Units 64 40 (x2)
Render Output Units 32 16 (x2)
Bus Type GDDR5 GDDR3
Bus Width 256-bit 256-bit (x2)
Fab Process 40 nm 55 nm
Transistors 1950 million 956 million
Bus PCIe x16 PCIe 2.0 x16 (PCIe bridge)
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of information (counted in megabytes per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the card's 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 fill rate is also dependant on quite a few other factors, especially 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

Amazon.com

Check prices at:

Radeon HD 4850 X2 1GB

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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