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GeForce 8800 GTX vs GeForce GTX 650

Intro

The GeForce 8800 GTX features a GPU core speed of 575 MHz, and the 768 MB of GDDR3 memory is set to run at 900 MHz through a 384-bit bus. It also is comprised of 128 SPUs, 64 Texture Address Units, and 24 Raster Operation Units.

Compare that to the GeForce GTX 650, which features clock speeds of 1058 MHz on the GPU, and 1250 MHz on the 1024 MB of GDDR5 memory. It features 384 SPUs as well as 32 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650 64 Watts
GeForce 8800 GTX 155 Watts
Difference: 91 Watts (142%)

Memory Bandwidth

The GeForce 8800 GTX, in theory, should be just a bit faster than the GeForce GTX 650 overall. (explain)

GeForce 8800 GTX 86400 MB/sec
GeForce GTX 650 80000 MB/sec
Difference: 6400 (8%)

Texel Rate

The GeForce 8800 GTX should be a little bit (more or less 9%) better at AF than the GeForce GTX 650. (explain)

GeForce 8800 GTX 36800 Mtexels/sec
GeForce GTX 650 33856 Mtexels/sec
Difference: 2944 (9%)

Pixel Rate

The GeForce GTX 650 should be much (about 23%) better at FSAA than the GeForce 8800 GTX, and also will be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 650 16928 Mpixels/sec
GeForce 8800 GTX 13800 Mpixels/sec
Difference: 3128 (23%)

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

Check prices at:

GeForce GTX 650

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.

Specifications

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Model GeForce 8800 GTX GeForce GTX 650
Manufacturer nVidia nVidia
Year Nov 2006 September 2012
Code Name G80 GK107
Memory 768 MB 1024 MB
Core Speed 575 MHz 1058 MHz
Memory Speed 1800 MHz 5000 MHz
Power (Max TDP) 155 watts 64 watts
Bandwidth 86400 MB/sec 80000 MB/sec
Texel Rate 36800 Mtexels/sec 33856 Mtexels/sec
Pixel Rate 13800 Mpixels/sec 16928 Mpixels/sec
Unified Shaders 128 384
Texture Mapping Units 64 32
Render Output Units 24 16
Bus Type GDDR3 GDDR5
Bus Width 384-bit 128-bit
Fab Process 90 nm 28 nm
Transistors 681 million 1300 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: Bandwidth is the max amount of data (counted in megabytes per second) that can be transported past the external memory interface within a second. It's worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type memory, the result 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 AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GTX

Amazon.com

Check prices at:

GeForce GTX 650

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 8800 GTX vs GeForce GTX 650”
Cory says:

Wish I would've found this site sooner than later... Already bought a 650 to replace my 8800. Back to the store!

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