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GeForce 8800 Ultra vs GeForce GTX 260

Intro

The GeForce 8800 Ultra uses a 90 nm design. nVidia has set the core speed at 612 MHz. The GDDR3 memory runs at a frequency of 1080 MHz on this specific model. It features 128 SPUs along with 64 TAUs and 24 Rasterization Operator Units.

Compare those specifications to the GeForce GTX 260, which makes use of a 65 nm design. nVidia has clocked the core frequency at 576 MHz. The GDDR3 RAM works at a speed of 999 MHz on this specific card. It features 192 SPUs along with 64 Texture Address Units and 28 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 Ultra 171 Watts
GeForce GTX 260 182 Watts
Difference: 11 Watts (6%)

Memory Bandwidth

Performance-wise, the GeForce GTX 260 should theoretically be a little bit superior to the GeForce 8800 Ultra in general. (explain)

GeForce GTX 260 111888 MB/sec
GeForce 8800 Ultra 103680 MB/sec
Difference: 8208 (8%)

Texel Rate

The GeForce 8800 Ultra will be a little bit (approximately 6%) more effective at texture filtering than the GeForce GTX 260. (explain)

GeForce 8800 Ultra 39168 Mtexels/sec
GeForce GTX 260 36864 Mtexels/sec
Difference: 2304 (6%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 260 is superior to the GeForce 8800 Ultra, though not by far. (explain)

GeForce GTX 260 16128 Mpixels/sec
GeForce 8800 Ultra 14688 Mpixels/sec
Difference: 1440 (10%)

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

Check prices at:

GeForce GTX 260

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 Ultra GeForce GTX 260
Manufacturer nVidia nVidia
Year May 2007 June 16, 2008
Code Name G80 G200
Memory 768 MB 896 MB
Core Speed 612 MHz 576 MHz
Memory Speed 2160 MHz 1998 MHz
Power (Max TDP) 171 watts 182 watts
Bandwidth 103680 MB/sec 111888 MB/sec
Texel Rate 39168 Mtexels/sec 36864 Mtexels/sec
Pixel Rate 14688 Mpixels/sec 16128 Mpixels/sec
Unified Shaders 128 192
Texture Mapping Units 64 64
Render Output Units 24 28
Bus Type GDDR3 GDDR3
Bus Width 384-bit 448-bit
Fab Process 90 nm 65 nm
Transistors 681 million 1400 million
Bus PCIe x16 PCIe x16 2.0
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.1

Memory Bandwidth: Bandwidth is the largest amount of information (measured in MB per second) that can be transferred across the external memory interface in a second. The number is worked out by multiplying the interface width by its memory speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka 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, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

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GeForce 8800 Ultra

Amazon.com

Check prices at:

GeForce GTX 260

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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