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GeForce GTX 560 vs Radeon HD 4850 512MB

Intro

The GeForce GTX 560 uses a 40 nm design. nVidia has clocked the core frequency at 810 MHz. The GDDR5 memory works at a frequency of 1001 MHz on this model. It features 336 SPUs as well as 56 Texture Address Units and 32 ROPs.

Compare those specs to the Radeon HD 4850 512MB, which features core speeds of 625 MHz on the GPU, and 993 MHz on the 512 MB of GDDR3 memory. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4850 512MB 110 Watts
GeForce GTX 560 150 Watts
Difference: 40 Watts (36%)

Memory Bandwidth

The GeForce GTX 560 should in theory be quite a bit faster than the Radeon HD 4850 512MB in general. (explain)

GeForce GTX 560 128128 MB/sec
Radeon HD 4850 512MB 63552 MB/sec
Difference: 64576 (102%)

Texel Rate

The GeForce GTX 560 will be much (about 81%) faster with regards to texture filtering than the Radeon HD 4850 512MB. (explain)

GeForce GTX 560 45360 Mtexels/sec
Radeon HD 4850 512MB 25000 Mtexels/sec
Difference: 20360 (81%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTX 560 is the winner, by far. (explain)

GeForce GTX 560 25920 Mpixels/sec
Radeon HD 4850 512MB 10000 Mpixels/sec
Difference: 15920 (159%)

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.

Price Comparison

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GeForce GTX 560

Amazon.com

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Radeon HD 4850 512MB

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 Radeon HD 4850 512MB
Manufacturer nVidia AMD
Year May 2011 Jun 25, 2008
Code Name GF114 RV770 PRO
Memory 1024 MB 512 MB
Core Speed 810 MHz 625 MHz
Memory Speed 4004 MHz 1986 MHz
Power (Max TDP) 150 watts 110 watts
Bandwidth 128128 MB/sec 63552 MB/sec
Texel Rate 45360 Mtexels/sec 25000 Mtexels/sec
Pixel Rate 25920 Mpixels/sec 10000 Mpixels/sec
Unified Shaders 336 800(160x5)
Texture Mapping Units 56 40
Render Output Units 32 16
Bus Type GDDR5 GDDR3
Bus Width 256-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 1950 million 956 million
Bus PCIe 2.0 x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be moved across the external memory interface in one second. It is worked out by multiplying the bus width by the speed of its memory. If it uses DDR RAM, it should be multiplied by 2 once again. If it uses 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 number of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total number of texture units of the card 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core clock speed. 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 output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce GTX 560

Amazon.com

Check prices at:

Radeon HD 4850 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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