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GeForce 8800 Ultra vs GeForce GTX 465

Intro

The GeForce 8800 Ultra makes use of a 90 nm design. nVidia has clocked the core speed at 612 MHz. The GDDR3 RAM is set to run at a speed of 1080 MHz on this particular model. It features 128 SPUs along with 64 Texture Address Units and 24 ROPs.

Compare those specifications to the GeForce GTX 465, which has GPU core speed of 607 MHz, and 1024 MB of GDDR5 RAM set to run at 802 MHz through a 256-bit bus. It also is made up of 352 Stream Processors, 44 TAUs, and 32 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 Ultra 171 Watts
GeForce GTX 465 200 Watts
Difference: 29 Watts (17%)

Memory Bandwidth

Theoretically speaking, the GeForce 8800 Ultra is 1% faster than the GeForce GTX 465 overall, due to its higher data rate. (explain)

GeForce 8800 Ultra 103680 MB/sec
GeForce GTX 465 102592 MB/sec
Difference: 1088 (1%)

Texel Rate

The GeForce 8800 Ultra will be much (approximately 47%) better at AF than the GeForce GTX 465. (explain)

GeForce 8800 Ultra 39168 Mtexels/sec
GeForce GTX 465 26708 Mtexels/sec
Difference: 12460 (47%)

Pixel Rate

The GeForce GTX 465 will be quite a bit (more or less 32%) better at AA than the GeForce 8800 Ultra, and also capable of handling higher screen resolutions more effectively. (explain)

GeForce GTX 465 19424 Mpixels/sec
GeForce 8800 Ultra 14688 Mpixels/sec
Difference: 4736 (32%)

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 Ultra

Amazon.com

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GeForce GTX 465

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 Ultra GeForce GTX 465
Manufacturer nVidia nVidia
Year May 2007 May 2010
Code Name G80 GF100
Memory 768 MB 1024 MB
Core Speed 612 MHz 607 MHz
Memory Speed 2160 MHz 3208 MHz
Power (Max TDP) 171 watts 200 watts
Bandwidth 103680 MB/sec 102592 MB/sec
Texel Rate 39168 Mtexels/sec 26708 Mtexels/sec
Pixel Rate 14688 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 largest amount of information (measured in megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

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

Display Prices

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GeForce 8800 Ultra

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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