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GeForce GTX 480 vs GeForce GTX 660


Intro

The GeForce GTX 480 uses a 40 nm design. nVidia has set the core frequency at 700 MHz. The GDDR5 RAM works at a frequency of 924 MHz on this particular model. It features 480 SPUs as well as 60 TAUs and 48 ROPs.

Compare those specs to the GeForce GTX 660, which features core clock speeds of 980 MHz on the GPU, and 1502 MHz on the 2048 MB of GDDR5 memory. It features 960 SPUs as well as 80 Texture Address Units and 24 Rasterization Operator Units.

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

GeForce GTX 660 5090 points
GeForce GTX 480 3650 points
Difference: 1440 (39%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 140 Watts
GeForce GTX 480 250 Watts
Difference: 110 Watts (79%)

Memory Bandwidth

In theory, the GeForce GTX 480 is 23% faster than the GeForce GTX 660 in general, because of its higher bandwidth. (explain)

GeForce GTX 480 177408 MB/sec
GeForce GTX 660 144192 MB/sec
Difference: 33216 (23%)

Texel Rate

The GeForce GTX 660 should be much (approximately 87%) better at anisotropic filtering than the GeForce GTX 480. (explain)

GeForce GTX 660 78400 Mtexels/sec
GeForce GTX 480 42000 Mtexels/sec
Difference: 36400 (87%)

Pixel Rate

The GeForce GTX 480 is much (approximately 43%) better at AA than the GeForce GTX 660, and capable of handling higher screen resolutions without losing too much performance. (explain)

GeForce GTX 480 33600 Mpixels/sec
GeForce GTX 660 23520 Mpixels/sec
Difference: 10080 (43%)

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 480

Amazon.com

GeForce GTX 660

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

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Model GeForce GTX 480 GeForce GTX 660
Manufacturer nVidia nVidia
Year March 2010 September 2012
Code Name GF100 GK106
Memory 1536 MB 2048 MB
Core Speed 700 MHz 980 MHz
Memory Speed 3696 MHz 6008 MHz
Power (Max TDP) 250 watts 140 watts
Bandwidth 177408 MB/sec 144192 MB/sec
Texel Rate 42000 Mtexels/sec 78400 Mtexels/sec
Pixel Rate 33600 Mpixels/sec 23520 Mpixels/sec
Unified Shaders 480 960
Texture Mapping Units 60 80
Render Output Units 48 24
Bus Type GDDR5 GDDR5
Bus Width 384-bit 192-bit
Fab Process 40 nm 28 nm
Transistors 3000 million 2540 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.0
OpenGL Version OpenGL 4.1 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the largest amount of data (in units of megabytes per second) that can be transferred past the external memory interface in one second. It is calculated by multiplying the card's interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number 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 speed of the chip. The higher the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory per 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 - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

Hide Prices

GeForce GTX 480

Amazon.com

GeForce GTX 660

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.

Comments

2 Responses to “GeForce GTX 480 vs GeForce GTX 660”
Help! I need a new graphics card. says:

[...] £178.39. Looks like a nice graphics card at not an unreasonable price. Comparing the two, using: HWCompare I am not sure my motherboard can cope & would support the GTX 660's Bus requirement: [...]

DasPootisXD says:

I have money for either one and I need help on deciding on which one I should buy. Other question is: what use is texel rate and how important it is?

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