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GeForce GTX 480 vs GeForce GTX 560

Intro

The GeForce GTX 480 comes with a clock speed of 700 MHz and a GDDR5 memory speed of 924 MHz. It also features a 384-bit bus, and makes use of a 40 nm design. It is made up of 480 SPUs, 60 TAUs, and 48 Raster Operation Units.

Compare that to the GeForce GTX 560, which comes with a GPU core clock speed of 810 MHz, and 1024 MB of GDDR5 RAM running at 1001 MHz through a 256-bit bus. It also is comprised of 336 Stream Processors, 56 Texture Address Units, and 32 ROPs.

(No game benchmarks for this combination yet.)

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

Performance-wise, the GeForce GTX 480 should theoretically be much better than the GeForce GTX 560 overall. (explain)

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

Texel Rate

The GeForce GTX 560 is a small bit (approximately 8%) faster with regards to AF than the GeForce GTX 480. (explain)

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

Pixel Rate

If running with a high resolution is important to you, then the GeForce GTX 480 is the winner, by far. (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

Amazon.com

GeForce GTX 560

Amazon.com

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

Model GeForce GTX 480 GeForce GTX 560
Manufacturer nVidia nVidia
Year March 2010 May 2011
Code Name GF100 GF114
Fab Process 40 nm 40 nm
Bus PCIe x16 PCIe 2.0 x16
Memory 1536 MB 1024 MB
Core Speed 700 MHz 810 MHz
Shader Speed 1401 MHz 1600 MHz
Memory Speed 924 MHz (3696 MHz effective) 1001 MHz (4004 MHz effective)
Unified Shaders 480 336
Texture Mapping Units 60 56
Render Output Units 48 32
Bus Type GDDR5 GDDR5
Bus Width 384-bit 256-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1
Power (Max TDP) 250 watts 150 watts
Shader Model 5.0 5.0
Bandwidth 177408 MB/sec 128128 MB/sec
Texel Rate 42000 Mtexels/sec 45360 Mtexels/sec
Pixel Rate 33600 Mpixels/sec 25920 Mpixels/sec

Memory Bandwidth: Bandwidth is the largest amount of information (in units of MB per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the interface width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the graphics 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 Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

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