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GeForce GTX 480 vs GeForce GTX 560

Intro

The GeForce GTX 480 has a clock speed of 700 MHz and a GDDR5 memory frequency of 924 MHz. It also uses a 384-bit bus, and makes use of a 40 nm design. It is comprised of 480 SPUs, 60 Texture Address Units, and 48 Raster Operation Units.

Compare those specs to the GeForce GTX 560, which makes use of a 40 nm design. nVidia has set the core frequency at 810 MHz. The GDDR5 memory works at a speed of 1001 MHz on this specific model. It features 336 SPUs as well as 56 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 560 150 Watts
GeForce GTX 480 250 Watts
Difference: 100 Watts (67%)

Memory Bandwidth

In theory, the GeForce GTX 480 will be 38% quicker than the GeForce GTX 560 overall, because of its higher data rate. (explain)

GeForce GTX 480 177408 MB/sec
GeForce GTX 560 128128 MB/sec
Difference: 49280 (38%)

Texel Rate

The GeForce GTX 560 will be a bit (more or less 8%) more effective at texture filtering than the GeForce GTX 480. (explain)

GeForce GTX 560 45360 Mtexels/sec
GeForce GTX 480 42000 Mtexels/sec
Difference: 3360 (8%)

Pixel Rate

The GeForce GTX 480 should be quite a bit (more or less 30%) more effective at full screen anti-aliasing than the GeForce GTX 560, and should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 480 33600 Mpixels/sec
GeForce GTX 560 25920 Mpixels/sec
Difference: 7680 (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.

Price Comparison

GeForce GTX 480

GeForce GTX 560

Specifications

Display Specifications

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Model GeForce GTX 480 GeForce GTX 560
Manufacturer nVidia nVidia
Year March 2010 May 2011
Code Name GF100 GF114
Memory 1536 MB 1024 MB
Core Speed 700 MHz 810 MHz
Memory Speed 3696 MHz 4004 MHz
Power (Max TDP) 250 watts 150 watts
Bandwidth 177408 MB/sec 128128 MB/sec
Texel Rate 42000 Mtexels/sec 45360 Mtexels/sec
Pixel Rate 33600 Mpixels/sec 25920 Mpixels/sec
Unified Shaders 480 336
Texture Mapping Units 60 56
Render Output Units 48 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
Fab Process 40 nm 40 nm
Transistors 3000 million 1950 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the interface width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better 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 figure is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the video card 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 colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant 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.

GeForce GTX 480

GeForce GTX 560

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