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GeForce 8500 GT vs GeForce GTX 660 Ti

Intro

The GeForce 8500 GT comes with a GPU core clock speed of 450 MHz, and the 512 MB of DDR2 memory runs at 400 MHz through a 128-bit bus. It also is made up of 16 SPUs, 8 Texture Address Units, and 4 Raster Operation Units.

Compare those specifications to the GeForce GTX 660 Ti, which comes with a clock speed of 915 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 192-bit memory bus, and makes use of a 28 nm design. It is comprised of 1344 SPUs, 112 Texture Address Units, and 24 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8500 GT 45 Watts
GeForce GTX 660 Ti 150 Watts
Difference: 105 Watts (233%)

Memory Bandwidth

The GeForce GTX 660 Ti should theoretically perform quite a bit faster than the GeForce 8500 GT in general. (explain)

GeForce GTX 660 Ti 144000 MB/sec
GeForce 8500 GT 12800 MB/sec
Difference: 131200 (1025%)

Texel Rate

The GeForce GTX 660 Ti will be quite a bit (more or less 2747%) faster with regards to AF than the GeForce 8500 GT. (explain)

GeForce GTX 660 Ti 102480 Mtexels/sec
GeForce 8500 GT 3600 Mtexels/sec
Difference: 98880 (2747%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTX 660 Ti is the winner, by far. (explain)

GeForce GTX 660 Ti 21960 Mpixels/sec
GeForce 8500 GT 1800 Mpixels/sec
Difference: 20160 (1120%)

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 8500 GT

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 8500 GT GeForce GTX 660 Ti
Manufacturer nVidia nVidia
Year April 2007 August 2012
Code Name G86 GK104
Memory 512 MB 2048 MB
Core Speed 450 MHz 915 MHz
Memory Speed 800 MHz 6000 MHz
Power (Max TDP) 45 watts 150 watts
Bandwidth 12800 MB/sec 144000 MB/sec
Texel Rate 3600 Mtexels/sec 102480 Mtexels/sec
Pixel Rate 1800 Mpixels/sec 21960 Mpixels/sec
Unified Shaders 16 1344
Texture Mapping Units 8 112
Render Output Units 4 24
Bus Type DDR2 GDDR5
Bus Width 128-bit 192-bit
Fab Process 80 nm 28 nm
Transistors 210 million 3540 million
Bus PCIe x16, PCI, PCIe x16 2.0 PCIe 3.0 x16
DirectX Version DirectX 10 DirectX 11.0
OpenGL Version OpenGL 3.0 OpenGL 4.3

Memory Bandwidth: Memory bandwidth is the max amount of information (counted in megabytes per second) that can be moved past the external memory interface in one second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 applied in one second. This number is worked out by multiplying the total number of texture units by the core clock speed of the chip. The higher 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 number of pixels that the graphics chip can possibly write to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce 8500 GT

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.

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