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GeForce GTX 285 2GB vs GeForce GTX 480

Intro

The GeForce GTX 285 2GB uses a 55 nm design. nVidia has set the core speed at 648 MHz. The GDDR3 RAM works at a frequency of 1242 MHz on this model. It features 240 SPUs as well as 80 TAUs and 32 Rasterization Operator Units.

Compare all that to the GeForce GTX 480, which uses a 40 nm design. nVidia has clocked the core speed at 700 MHz. The GDDR5 memory runs at a frequency of 924 MHz on this specific model. It features 480 SPUs along with 60 Texture Address Units and 48 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 285 2GB 204 Watts
GeForce GTX 480 250 Watts
Difference: 46 Watts (23%)

Memory Bandwidth

Theoretically, the GeForce GTX 480 should be a small bit faster than the GeForce GTX 285 2GB overall. (explain)

GeForce GTX 480 177408 MB/sec
GeForce GTX 285 2GB 158976 MB/sec
Difference: 18432 (12%)

Texel Rate

The GeForce GTX 285 2GB will be much (more or less 23%) better at texture filtering than the GeForce GTX 480. (explain)

GeForce GTX 285 2GB 51840 Mtexels/sec
GeForce GTX 480 42000 Mtexels/sec
Difference: 9840 (23%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 480 is the winner, by far. (explain)

GeForce GTX 480 33600 Mpixels/sec
GeForce GTX 285 2GB 20736 Mpixels/sec
Difference: 12864 (62%)

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 285 2GB

Amazon.com

Check prices at:

GeForce GTX 480

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 285 2GB GeForce GTX 480
Manufacturer nVidia nVidia
Year January 15, 2009 March 2010
Code Name G200b GF100
Memory 2048 MB 1536 MB
Core Speed 648 MHz 700 MHz
Memory Speed 2484 MHz 3696 MHz
Power (Max TDP) 204 watts 250 watts
Bandwidth 158976 MB/sec 177408 MB/sec
Texel Rate 51840 Mtexels/sec 42000 Mtexels/sec
Pixel Rate 20736 Mpixels/sec 33600 Mpixels/sec
Unified Shaders 240 480
Texture Mapping Units 80 60
Render Output Units 32 48
Bus Type GDDR3 GDDR5
Bus Width 512-bit 384-bit
Fab Process 55 nm 40 nm
Transistors 1400 million 3000 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.1 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be moved past the external memory interface within a second. It's calculated by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce GTX 285 2GB

Amazon.com

Check prices at:

GeForce GTX 480

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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