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GeForce 8800 GTS (G80) 320MB vs Radeon HD 6670 (OEM) 1GB

Intro

The GeForce 8800 GTS (G80) 320MB has a clock speed of 513 MHz and a GDDR3 memory speed of 792 MHz. It also makes use of a 320-bit bus, and makes use of a 90 nm design. It features 96 SPUs, 48 TAUs, and 20 Raster Operation Units.

Compare all that to the Radeon HD 6670 (OEM) 1GB, which features a clock frequency of 800 MHz and a GDDR5 memory frequency of 1000 MHz. It also features a 128-bit memory bus, and uses a 40 nm design. It is comprised of 480 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 1GB 63 Watts
GeForce 8800 GTS (G80) 320MB 143 Watts
Difference: 80 Watts (127%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6670 (OEM) 1GB should perform a little bit faster than the GeForce 8800 GTS (G80) 320MB overall. (explain)

Radeon HD 6670 (OEM) 1GB 64000 MB/sec
GeForce 8800 GTS (G80) 320MB 63360 MB/sec
Difference: 640 (1%)

Texel Rate

The GeForce 8800 GTS (G80) 320MB should be quite a bit (more or less 28%) more effective at texture filtering than the Radeon HD 6670 (OEM) 1GB. (explain)

GeForce 8800 GTS (G80) 320MB 24624 Mtexels/sec
Radeon HD 6670 (OEM) 1GB 19200 Mtexels/sec
Difference: 5424 (28%)

Pixel Rate

The GeForce 8800 GTS (G80) 320MB should be much (more or less 60%) better at AA than the Radeon HD 6670 (OEM) 1GB, and will be capable of handling higher screen resolutions better. (explain)

GeForce 8800 GTS (G80) 320MB 10260 Mpixels/sec
Radeon HD 6670 (OEM) 1GB 6400 Mpixels/sec
Difference: 3860 (60%)

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 GTS (G80) 320MB

Amazon.com

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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 GTS (G80) 320MB Radeon HD 6670 (OEM) 1GB
Manufacturer nVidia AMD
Year Feb 2007 February 2011
Code Name G80 Turks
Memory 320 MB 1024 MB
Core Speed 513 MHz 800 MHz
Memory Speed 1584 MHz 4000 MHz
Power (Max TDP) 143 watts 63 watts
Bandwidth 63360 MB/sec 64000 MB/sec
Texel Rate 24624 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 10260 Mpixels/sec 6400 Mpixels/sec
Unified Shaders 96 480
Texture Mapping Units 48 24
Render Output Units 20 8
Bus Type GDDR3 GDDR5
Bus Width 320-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: Memory bandwidth is the maximum amount of data (counted in megabytes per second) that can be transferred over the external memory interface in a second. It is worked out by multiplying the card's interface width by its memory clock speed. If the card has DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied in one second. This 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka 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 of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

Hide Prices

GeForce 8800 GTS (G80) 320MB

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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