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GeForce GTX 560 vs Radeon HD 4850 X2 512MB

Intro

The GeForce GTX 560 has a GPU core clock speed of 810 MHz, and the 1024 MB of GDDR5 RAM runs at 1001 MHz through a 256-bit bus. It also features 336 Stream Processors, 56 Texture Address Units, and 32 Raster Operation Units.

Compare those specs to the Radeon HD 4850 X2 512MB, which uses a 55 nm design. AMD has set the core frequency at 625 MHz. The GDDR3 memory works at a speed of 993 MHz on this particular 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 560 150 Watts
Radeon HD 4850 X2 512MB 250 Watts
Difference: 100 Watts (67%)

Memory Bandwidth

In theory, the GeForce GTX 560 is 1% faster than the Radeon HD 4850 X2 512MB overall, due to its higher bandwidth. (explain)

GeForce GTX 560 128128 MB/sec
Radeon HD 4850 X2 512MB 127104 MB/sec
Difference: 1024 (1%)

Texel Rate

The Radeon HD 4850 X2 512MB will be just a bit (more or less 10%) faster with regards to AF than the GeForce GTX 560. (explain)

Radeon HD 4850 X2 512MB 50000 Mtexels/sec
GeForce GTX 560 45360 Mtexels/sec
Difference: 4640 (10%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTX 560 is superior to the Radeon HD 4850 X2 512MB, by a large margin. (explain)

GeForce GTX 560 25920 Mpixels/sec
Radeon HD 4850 X2 512MB 20000 Mpixels/sec
Difference: 5920 (30%)

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

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 Radeon HD 4850 X2 512MB
Manufacturer nVidia AMD
Year May 2011 Nov 7, 2008
Code Name GF114 R700
Memory 1024 MB 512 MB (x2)
Core Speed 810 MHz 625 MHz (x2)
Memory Speed 4004 MHz 1986 MHz (x2)
Power (Max TDP) 150 watts 250 watts
Bandwidth 128128 MB/sec 127104 MB/sec
Texel Rate 45360 Mtexels/sec 50000 Mtexels/sec
Pixel Rate 25920 Mpixels/sec 20000 Mpixels/sec
Unified Shaders 336 800(160x5) (x2)
Texture Mapping Units 56 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 2.0 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 largest amount of information (in units of megabytes per second) that can be transferred across the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory speed. If it uses DDR type 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 anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce GTX 560

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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