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GeForce GTX 560 Ti vs Radeon HD 4850 X2 512MB

Intro

The GeForce GTX 560 Ti comes with a GPU core clock speed of 822 MHz, and the 1024 MB of GDDR5 RAM is set to run at 1002 MHz through a 256-bit bus. It also is made up of 384 Stream Processors, 64 TAUs, and 32 ROPs.

Compare all that to the Radeon HD 4850 X2 512MB, which has a clock frequency of 625 MHz and a GDDR3 memory frequency of 993 MHz. It also makes use of a 256-bit memory bus, and makes use of a 55 nm design. It is comprised of 800(160x5) SPUs, 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 512MB 250 Watts
Difference: 80 Watts (47%)

Memory Bandwidth

Performance-wise, the GeForce GTX 560 Ti should theoretically be just a bit better than the Radeon HD 4850 X2 512MB in general. (explain)

GeForce GTX 560 Ti 128256 MB/sec
Radeon HD 4850 X2 512MB 127104 MB/sec
Difference: 1152 (1%)

Texel Rate

The GeForce GTX 560 Ti will be a small bit (about 5%) more effective at anisotropic filtering than the Radeon HD 4850 X2 512MB. (explain)

GeForce GTX 560 Ti 52608 Mtexels/sec
Radeon HD 4850 X2 512MB 50000 Mtexels/sec
Difference: 2608 (5%)

Pixel Rate

The GeForce GTX 560 Ti should be a lot (approximately 32%) better at full screen anti-aliasing than the Radeon HD 4850 X2 512MB, and will be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 560 Ti 26304 Mpixels/sec
Radeon HD 4850 X2 512MB 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 512MB

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 512MB
Manufacturer nVidia AMD
Year January 2011 Nov 7, 2008
Code Name GF114 R700
Memory 1024 MB 512 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 maximum amount of data (in units of MB per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the video 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 maximum number of pixels that the graphics chip could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GTX 560 Ti

Amazon.com

Check prices at:

Radeon HD 4850 X2 512MB

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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