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GeForce 8800 GTX vs Radeon HD 6670 (OEM)

Intro

The GeForce 8800 GTX comes with a clock speed of 575 MHz and a GDDR3 memory frequency of 900 MHz. It also features a 384-bit bus, and makes use of a 90 nm design. It is comprised of 128 SPUs, 64 Texture Address Units, and 24 ROPs.

Compare those specifications to the Radeon HD 6670 (OEM), which makes use of a 40 nm design. AMD has set the core speed at 800 MHz. The GDDR5 RAM is set to run at a frequency of 1000 MHz on this particular card. It features 480 SPUs as well as 24 TAUs and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 63 Watts
GeForce 8800 GTX 155 Watts
Difference: 92 Watts (146%)

Memory Bandwidth

In theory, the GeForce 8800 GTX is 35% quicker than the Radeon HD 6670 (OEM) overall, because of its higher bandwidth. (explain)

GeForce 8800 GTX 86400 MB/sec
Radeon HD 6670 (OEM) 64000 MB/sec
Difference: 22400 (35%)

Texel Rate

The GeForce 8800 GTX should be much (more or less 92%) faster with regards to AF than the Radeon HD 6670 (OEM). (explain)

GeForce 8800 GTX 36800 Mtexels/sec
Radeon HD 6670 (OEM) 19200 Mtexels/sec
Difference: 17600 (92%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce 8800 GTX is a better choice, by a large margin. (explain)

GeForce 8800 GTX 13800 Mpixels/sec
Radeon HD 6670 (OEM) 6400 Mpixels/sec
Difference: 7400 (116%)

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:

Radeon HD 6670 (OEM)

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 Radeon HD 6670 (OEM)
Manufacturer nVidia AMD
Year Nov 2006 February 2011
Code Name G80 Turks
Memory 768 MB 512 MB
Core Speed 575 MHz 800 MHz
Memory Speed 1800 MHz 4000 MHz
Power (Max TDP) 155 watts 63 watts
Bandwidth 86400 MB/sec 64000 MB/sec
Texel Rate 36800 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 13800 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 maximum amount of information (measured in MB per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 in one second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 8800 GTX

Amazon.com

Check prices at:

Radeon HD 6670 (OEM)

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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