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GeForce 8800 GTX vs GeForce GTX 650 Ti

Intro

The GeForce 8800 GTX uses a 90 nm design. nVidia has set the core speed at 575 MHz. The GDDR3 RAM is set to run at a speed of 900 MHz on this particular card. It features 128 SPUs along with 64 Texture Address Units and 24 Rasterization Operator Units.

Compare that to the GeForce GTX 650 Ti, which features clock speeds of 928 MHz on the GPU, and 1350 MHz on the 1024 MB of GDDR5 memory. It features 768 SPUs as well as 64 Texture Address Units and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 Ti 110 Watts
GeForce 8800 GTX 155 Watts
Difference: 45 Watts (41%)

Memory Bandwidth

Both cards have exactly the same memory bandwidth, so theoretically they should have identical performance. (explain)

Texel Rate

The GeForce GTX 650 Ti is a lot (about 61%) better at texture filtering than the GeForce 8800 GTX. (explain)

GeForce GTX 650 Ti 59392 Mtexels/sec
GeForce 8800 GTX 36800 Mtexels/sec
Difference: 22592 (61%)

Pixel Rate

The GeForce GTX 650 Ti is a little bit (about 8%) better at AA than the GeForce 8800 GTX, and also able to handle higher screen resolutions without slowing down too much. (explain)

GeForce GTX 650 Ti 14848 Mpixels/sec
GeForce 8800 GTX 13800 Mpixels/sec
Difference: 1048 (8%)

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 8800 GTX

Amazon.com

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GeForce GTX 650 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 8800 GTX GeForce GTX 650 Ti
Manufacturer nVidia nVidia
Year Nov 2006 October 2012
Code Name G80 GK106
Memory 768 MB 1024 MB
Core Speed 575 MHz 928 MHz
Memory Speed 1800 MHz 5400 MHz
Power (Max TDP) 155 watts 110 watts
Bandwidth 86400 MB/sec 86400 MB/sec
Texel Rate 36800 Mtexels/sec 59392 Mtexels/sec
Pixel Rate 13800 Mpixels/sec 14848 Mpixels/sec
Unified Shaders 128 768
Texture Mapping Units 64 64
Render Output Units 24 16
Bus Type GDDR3 GDDR5
Bus Width 384-bit 128-bit
Fab Process 90 nm 28 nm
Transistors 681 million 2540 million
Bus PCIe x16 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 data (counted in megabytes per second) that can be transferred over the external memory interface within a second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka 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 memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce 8800 GTX

Amazon.com

Check prices at:

GeForce GTX 650 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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