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GeForce 8800 GTX vs GeForce GTX 465

Intro

The GeForce 8800 GTX makes use of a 90 nm design. nVidia has clocked the core speed at 575 MHz. The GDDR3 memory is set to run at a frequency of 900 MHz on this specific model. It features 128 SPUs as well as 64 Texture Address Units and 24 Rasterization Operator Units.

Compare all that to the GeForce GTX 465, which comes with clock speeds of 607 MHz on the GPU, and 802 MHz on the 1024 MB of GDDR5 RAM. It features 352 SPUs along with 44 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 GTX 155 Watts
GeForce GTX 465 200 Watts
Difference: 45 Watts (29%)

Memory Bandwidth

In theory, the GeForce GTX 465 should perform a small bit faster than the GeForce 8800 GTX in general. (explain)

GeForce GTX 465 102592 MB/sec
GeForce 8800 GTX 86400 MB/sec
Difference: 16192 (19%)

Texel Rate

The GeForce 8800 GTX should be much (approximately 38%) better at texture filtering than the GeForce GTX 465. (explain)

GeForce 8800 GTX 36800 Mtexels/sec
GeForce GTX 465 26708 Mtexels/sec
Difference: 10092 (38%)

Pixel Rate

The GeForce GTX 465 will be much (more or less 41%) faster with regards to full screen anti-aliasing than the GeForce 8800 GTX, and should be capable of handling higher resolutions without slowing down too much. (explain)

GeForce GTX 465 19424 Mpixels/sec
GeForce 8800 GTX 13800 Mpixels/sec
Difference: 5624 (41%)

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 465

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 465
Manufacturer nVidia nVidia
Year Nov 2006 May 2010
Code Name G80 GF100
Memory 768 MB 1024 MB
Core Speed 575 MHz 607 MHz
Memory Speed 1800 MHz 3208 MHz
Power (Max TDP) 155 watts 200 watts
Bandwidth 86400 MB/sec 102592 MB/sec
Texel Rate 36800 Mtexels/sec 26708 Mtexels/sec
Pixel Rate 13800 Mpixels/sec 19424 Mpixels/sec
Unified Shaders 128 352
Texture Mapping Units 64 44
Render Output Units 24 32
Bus Type GDDR3 GDDR5
Bus Width 384-bit 256-bit
Fab Process 90 nm 40 nm
Transistors 681 million 3000 million
Bus PCIe x16 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

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

Display Prices

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GeForce 8800 GTX

Amazon.com

Check prices at:

GeForce GTX 465

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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