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GeForce 8800 Ultra vs Radeon HD 6670 (OEM) 1GB

Intro

The GeForce 8800 Ultra comes with core speeds of 612 MHz on the GPU, and 1080 MHz on the 768 MB of GDDR3 RAM. It features 128 SPUs along with 64 TAUs and 24 ROPs.

Compare all of that to the Radeon HD 6670 (OEM) 1GB, which features clock speeds of 800 MHz on the GPU, and 1000 MHz on the 1024 MB of GDDR5 RAM. It features 480 SPUs along with 24 TAUs and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 1GB 63 Watts
GeForce 8800 Ultra 171 Watts
Difference: 108 Watts (171%)

Memory Bandwidth

Performance-wise, the GeForce 8800 Ultra should theoretically be a lot better than the Radeon HD 6670 (OEM) 1GB overall. (explain)

GeForce 8800 Ultra 103680 MB/sec
Radeon HD 6670 (OEM) 1GB 64000 MB/sec
Difference: 39680 (62%)

Texel Rate

The GeForce 8800 Ultra will be much (more or less 104%) better at anisotropic filtering than the Radeon HD 6670 (OEM) 1GB. (explain)

GeForce 8800 Ultra 39168 Mtexels/sec
Radeon HD 6670 (OEM) 1GB 19200 Mtexels/sec
Difference: 19968 (104%)

Pixel Rate

The GeForce 8800 Ultra is much (more or less 130%) faster with regards to FSAA than the Radeon HD 6670 (OEM) 1GB, and capable of handling higher resolutions while still performing well. (explain)

GeForce 8800 Ultra 14688 Mpixels/sec
Radeon HD 6670 (OEM) 1GB 6400 Mpixels/sec
Difference: 8288 (130%)

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:

Radeon HD 6670 (OEM) 1GB

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 Radeon HD 6670 (OEM) 1GB
Manufacturer nVidia AMD
Year May 2007 February 2011
Code Name G80 Turks
Memory 768 MB 1024 MB
Core Speed 612 MHz 800 MHz
Memory Speed 2160 MHz 4000 MHz
Power (Max TDP) 171 watts 63 watts
Bandwidth 103680 MB/sec 64000 MB/sec
Texel Rate 39168 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 14688 Mpixels/sec 6400 Mpixels/sec
Unified Shaders 128 480
Texture Mapping Units 64 24
Render Output Units 24 8
Bus Type GDDR3 GDDR5
Bus Width 384-bit 128-bit
Fab Process 90 nm 40 nm
Transistors 681 million 715 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Bandwidth is the largest amount of data (counted in megabytes per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. 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 number of texture map elements (texels) that are applied per second. This number 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 video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per 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. The number is worked out by multiplying the number of colour ROPs by the the card's 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 output rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce 8800 Ultra

Amazon.com

Check prices at:

Radeon HD 6670 (OEM) 1GB

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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