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GeForce GTX 280 vs GeForce GTX 660 Ti

Intro

The GeForce GTX 280 has a GPU clock speed of 602 MHz, and the 1024 MB of GDDR3 memory is set to run at 1107 MHz through a 512-bit bus. It also is comprised of 240 SPUs, 80 TAUs, and 32 Raster Operation Units.

Compare those specifications to the GeForce GTX 660 Ti, which has a clock frequency of 915 MHz and a GDDR5 memory frequency of 1500 MHz. It also features a 192-bit memory bus, and makes use of a 28 nm design. It features 1344 SPUs, 112 TAUs, and 24 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 Ti 150 Watts
GeForce GTX 280 236 Watts
Difference: 86 Watts (57%)

Memory Bandwidth

In theory, the GeForce GTX 660 Ti should perform a small bit faster than the GeForce GTX 280 overall. (explain)

GeForce GTX 660 Ti 144000 MB/sec
GeForce GTX 280 141696 MB/sec
Difference: 2304 (2%)

Texel Rate

The GeForce GTX 660 Ti should be much (about 113%) faster with regards to texture filtering than the GeForce GTX 280. (explain)

GeForce GTX 660 Ti 102480 Mtexels/sec
GeForce GTX 280 48160 Mtexels/sec
Difference: 54320 (113%)

Pixel Rate

The GeForce GTX 660 Ti should be a small bit (approximately 14%) faster with regards to full screen anti-aliasing than the GeForce GTX 280, and able to handle higher resolutions while still performing well. (explain)

GeForce GTX 660 Ti 21960 Mpixels/sec
GeForce GTX 280 19264 Mpixels/sec
Difference: 2696 (14%)

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 280

Amazon.com

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GeForce GTX 660 Ti

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 280 GeForce GTX 660 Ti
Manufacturer nVidia nVidia
Year June 17, 2008 August 2012
Code Name G200 GK104
Memory 1024 MB 2048 MB
Core Speed 602 MHz 915 MHz
Memory Speed 2214 MHz 6000 MHz
Power (Max TDP) 236 watts 150 watts
Bandwidth 141696 MB/sec 144000 MB/sec
Texel Rate 48160 Mtexels/sec 102480 Mtexels/sec
Pixel Rate 19264 Mpixels/sec 21960 Mpixels/sec
Unified Shaders 240 1344
Texture Mapping Units 80 112
Render Output Units 32 24
Bus Type GDDR3 GDDR5
Bus Width 512-bit 192-bit
Fab Process 65 nm 28 nm
Transistors 1400 million 3540 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 data (measured in megabytes per second) that can be moved over the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed per second. This is calculated by multiplying the total texture units by the core speed of the chip. The higher the texel rate, the better the 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 number of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes 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 - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce GTX 280

Amazon.com

Check prices at:

GeForce GTX 660 Ti

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 280 vs GeForce GTX 660 Ti”
Mike'm says:

Looks like a decent upgrade.

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