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GeForce GTX 560 Ti vs Radeon HD 4850 X2 1GB

Intro

The GeForce GTX 560 Ti makes use of a 40 nm design. nVidia has clocked the core frequency at 822 MHz. The GDDR5 RAM works at a frequency of 1002 MHz on this particular card. It features 384 SPUs as well as 64 Texture Address Units and 32 Rasterization Operator Units.

Compare those specifications to the Radeon HD 4850 X2 1GB, which makes use of a 55 nm design. AMD has clocked the core frequency at 625 MHz. The GDDR3 RAM is set to run at a frequency of 993 MHz on this specific card. It features 800(160x5) SPUs as well as 40 Texture Address Units 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% faster than the Radeon HD 4850 X2 1GB in general, due to its higher bandwidth. (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 (approximately 5%) faster with regards to AF 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

If using high levels of AA is important to you, then the GeForce GTX 560 Ti is superior to the Radeon HD 4850 X2 1GB, and very much so. (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

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Radeon HD 4850 X2 1GB

Amazon.com

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

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

Pixel Rate: Pixel rate is the most pixels the graphics card can 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 - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential 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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