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GeForce 8800 Ultra vs Radeon HD 5830

Intro

The GeForce 8800 Ultra uses a 90 nm design. nVidia has clocked the core speed at 612 MHz. The GDDR3 RAM works at a frequency of 1080 MHz on this particular card. It features 128 SPUs as well as 64 Texture Address Units and 24 ROPs.

Compare those specs to the Radeon HD 5830, which features a core clock frequency of 800 MHz and a GDDR5 memory speed of 1000 MHz. It also uses a 256-bit memory bus, and makes use of a 40 nm design. It features 1120(224x5) SPUs, 56 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 8800 Ultra 171 Watts
Radeon HD 5830 175 Watts
Difference: 4 Watts (2%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5830 will be 23% quicker than the GeForce 8800 Ultra in general, due to its higher bandwidth. (explain)

Radeon HD 5830 128000 MB/sec
GeForce 8800 Ultra 103680 MB/sec
Difference: 24320 (23%)

Texel Rate

The Radeon HD 5830 will be just a bit (approximately 14%) faster with regards to anisotropic filtering than the GeForce 8800 Ultra. (explain)

Radeon HD 5830 44800 Mtexels/sec
GeForce 8800 Ultra 39168 Mtexels/sec
Difference: 5632 (14%)

Pixel Rate

The GeForce 8800 Ultra is a small bit (approximately 15%) better at AA than the Radeon HD 5830, and will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce 8800 Ultra 14688 Mpixels/sec
Radeon HD 5830 12800 Mpixels/sec
Difference: 1888 (15%)

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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Radeon HD 5830

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 Radeon HD 5830
Manufacturer nVidia AMD
Year May 2007 February 25, 2010
Code Name G80 Cypress LE
Memory 768 MB 1024 MB
Core Speed 612 MHz 800 MHz
Memory Speed 2160 MHz 4000 MHz
Power (Max TDP) 171 watts 175 watts
Bandwidth 103680 MB/sec 128000 MB/sec
Texel Rate 39168 Mtexels/sec 44800 Mtexels/sec
Pixel Rate 14688 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 128 1120(224x5)
Texture Mapping Units 64 56
Render Output Units 24 16
Bus Type GDDR3 GDDR5
Bus Width 384-bit 256-bit
Fab Process 90 nm 40 nm
Transistors 681 million 2154 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Bandwidth is the largest amount of data (in units of megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to its local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the core clock speed. 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 is also dependant on lots of other factors, most notably the memory bandwidth - the lower the memory 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:

Radeon HD 5830

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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