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GeForce GTX 480 vs GeForce GTX 560

Intro

The GeForce GTX 480 has a GPU core speed of 700 MHz, and the 1536 MB of GDDR5 RAM runs at 924 MHz through a 384-bit bus. It also is comprised of 480 SPUs, 60 TAUs, and 48 ROPs.

Compare that to the GeForce GTX 560, which uses a 40 nm design. nVidia has clocked the core frequency at 810 MHz. The GDDR5 RAM runs at a frequency of 1001 MHz on this particular model. It features 336 SPUs along with 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

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

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

Texel Rate

The GeForce GTX 560 should be just a bit (more or less 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

The GeForce GTX 480 will be a lot (approximately 30%) faster with regards to anti-aliasing than the GeForce GTX 560, and also capable of handling higher screen resolutions without slowing down too much. (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 max amount of data (in units of MB per second) that can be moved over the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. If the card has DDR RAM, it should be multiplied by 2 once again. If 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This figure is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.

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