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GeForce GTX 285 1GB vs GeForce GTX 660

Intro

The GeForce GTX 285 1GB comes with a GPU core clock speed of 648 MHz, and the 1024 MB of GDDR3 memory is set to run at 1242 MHz through a 512-bit bus. It also is comprised of 240 Stream Processors, 80 TAUs, and 32 Raster Operation Units.

Compare all that to the GeForce GTX 660, which comes with a core clock frequency of 980 MHz and a GDDR5 memory frequency of 1502 MHz. It also makes use of a 192-bit bus, and makes use of a 28 nm design. It is comprised of 960 SPUs, 80 TAUs, and 24 Raster Operation 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

Theoretically speaking, the GeForce GTX 285 1GB is 10% quicker than the GeForce GTX 660 overall, due to its higher data rate. (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 a lot (about 51%) more effective at texture 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 will be a little bit (approximately 13%) better at anti-aliasing than the GeForce GTX 285 1GB, and also able to handle higher screen resolutions without losing too much performance. (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: Memory bandwidth is the maximum amount of information (measured in MB per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, 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 texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the video 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 record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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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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