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GeForce GTX 285 1GB vs GeForce GTX 660

Intro

The GeForce GTX 285 1GB has a core clock speed of 648 MHz and a GDDR3 memory speed of 1242 MHz. It also makes use of a 512-bit memory bus, and uses a 55 nm design. It features 240 SPUs, 80 Texture Address Units, and 32 ROPs.

Compare that to the GeForce GTX 660, which uses a 28 nm design. nVidia has clocked the core speed at 980 MHz. The GDDR5 RAM is set to run at a speed of 1502 MHz on this specific model. It features 960 SPUs as well as 80 TAUs and 24 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 140 Watts
GeForce GTX 285 1GB 204 Watts
Difference: 64 Watts (46%)

Memory Bandwidth

The GeForce GTX 285 1GB, in theory, should be just a bit faster than the GeForce GTX 660 in general. (explain)

GeForce GTX 285 1GB 158976 MB/sec
GeForce GTX 660 144192 MB/sec
Difference: 14784 (10%)

Texel Rate

The GeForce GTX 660 should be much (about 51%) faster with regards to anisotropic filtering than the GeForce GTX 285 1GB. (explain)

GeForce GTX 660 78400 Mtexels/sec
GeForce GTX 285 1GB 51840 Mtexels/sec
Difference: 26560 (51%)

Pixel Rate

The GeForce GTX 660 should be a bit (about 13%) faster with regards to FSAA than the GeForce GTX 285 1GB, and also will be able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 660 23520 Mpixels/sec
GeForce GTX 285 1GB 20736 Mpixels/sec
Difference: 2784 (13%)

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 1GB

Amazon.com

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GeForce GTX 660

Amazon.com

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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 1GB GeForce GTX 660
Manufacturer nVidia nVidia
Year January 15, 2009 September 2012
Code Name G200b GK106
Memory 1024 MB 2048 MB
Core Speed 648 MHz 980 MHz
Memory Speed 2484 MHz 6008 MHz
Power (Max TDP) 204 watts 140 watts
Bandwidth 158976 MB/sec 144192 MB/sec
Texel Rate 51840 Mtexels/sec 78400 Mtexels/sec
Pixel Rate 20736 Mpixels/sec 23520 Mpixels/sec
Unified Shaders 240 960
Texture Mapping Units 80 80
Render Output Units 32 24
Bus Type GDDR3 GDDR5
Bus Width 512-bit 192-bit
Fab Process 55 nm 28 nm
Transistors 1400 million 2540 million
Bus PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.1 OpenGL 4.3

Memory Bandwidth: Bandwidth is the maximum amount of data (measured in MB per second) that can be transported past the external memory interface within a second. The number is worked out by multiplying the bus width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better 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 are applied in one second. This is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends 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.

Display Prices

Hide Prices

GeForce GTX 285 1GB

Amazon.com

Check prices at:

GeForce GTX 660

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.

Comments

One Response to “GeForce GTX 285 1GB vs GeForce GTX 660”
Nathan says:

If you're going for a 285 get the 2GB version... I would personally recommend an r9 280x though.

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