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GeForce GTX 465 vs GeForce GTX 660

Intro

The GeForce GTX 465 makes use of a 40 nm design. nVidia has set the core frequency at 607 MHz. The GDDR5 RAM is set to run at a frequency of 802 MHz on this card. It features 352 SPUs along with 44 TAUs and 32 ROPs.

Compare that to the GeForce GTX 660, which features a core clock frequency of 980 MHz and a GDDR5 memory frequency of 1502 MHz. It also features a 192-bit bus, and uses a 28 nm design. It is made up of 960 SPUs, 80 TAUs, and 24 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 660 140 Watts
GeForce GTX 465 200 Watts
Difference: 60 Watts (43%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 660 should in theory be a lot better than the GeForce GTX 465 overall. (explain)

GeForce GTX 660 144192 MB/sec
GeForce GTX 465 102592 MB/sec
Difference: 41600 (41%)

Texel Rate

The GeForce GTX 660 should be much (more or less 194%) faster with regards to AF than the GeForce GTX 465. (explain)

GeForce GTX 660 78400 Mtexels/sec
GeForce GTX 465 26708 Mtexels/sec
Difference: 51692 (194%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 660 is superior to the GeForce GTX 465, by a large margin. (explain)

GeForce GTX 660 23520 Mpixels/sec
GeForce GTX 465 19424 Mpixels/sec
Difference: 4096 (21%)

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 465

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 465 GeForce GTX 660
Manufacturer nVidia nVidia
Year May 2010 September 2012
Code Name GF100 GK106
Memory 1024 MB 2048 MB
Core Speed 607 MHz 980 MHz
Memory Speed 3208 MHz 6008 MHz
Power (Max TDP) 200 watts 140 watts
Bandwidth 102592 MB/sec 144192 MB/sec
Texel Rate 26708 Mtexels/sec 78400 Mtexels/sec
Pixel Rate 19424 Mpixels/sec 23520 Mpixels/sec
Unified Shaders 352 960
Texture Mapping Units 44 80
Render Output Units 32 24
Bus Type GDDR5 GDDR5
Bus Width 256-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 max amount of information (counted in MB per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the video card will be at handling 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 number is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.

Display Prices

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GeForce GTX 465

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.

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