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GeForce GTX 560 Ti vs Radeon HD 4850 X2 1GB

Intro

The GeForce GTX 560 Ti has a GPU clock speed of 822 MHz, and the 1024 MB of GDDR5 RAM runs at 1002 MHz through a 256-bit bus. It also is made up of 384 Stream Processors, 64 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Radeon HD 4850 X2 1GB, which features a clock speed of 625 MHz and a GDDR3 memory speed of 993 MHz. It also uses a 256-bit memory bus, and makes use of a 55 nm design. It is comprised 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

Theoretically, the GeForce GTX 560 Ti should perform a bit faster than the Radeon HD 4850 X2 1GB overall. (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 should be a small bit (more or less 5%) faster with regards to anisotropic 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

If using a high screen resolution is important to you, then the GeForce GTX 560 Ti is superior to the Radeon HD 4850 X2 1GB, by a large margin. (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: Bandwidth is the max amount of information (counted in MB per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

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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