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GeForce GTX 465 vs GeForce GTX 660

Intro

The GeForce GTX 465 uses a 40 nm design. nVidia has set the core speed at 607 MHz. The GDDR5 memory is set to run at a speed of 802 MHz on this card. It features 352 SPUs as well as 44 Texture Address Units and 32 Rasterization Operator Units.

Compare that to the GeForce GTX 660, which makes use of a 28 nm design. nVidia has set the core speed at 980 MHz. The GDDR5 memory runs at a frequency of 1502 MHz on this specific model. It features 960 SPUs as well as 80 TAUs and 24 Rasterization Operator 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

In theory, the GeForce GTX 660 should perform much faster 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 is a lot (approximately 194%) better at texture filtering than the GeForce GTX 465. (explain)

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

Pixel Rate

The GeForce GTX 660 should be a lot (approximately 21%) faster with regards to AA than the GeForce GTX 465, and also should be capable of handling higher resolutions while still performing well. (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 maximum amount of data (counted in MB per second) that can be transported over the external memory interface in one second. It's calculated by multiplying the bus width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total texture units by the core speed of the chip. The better this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum 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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