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GeForce 9800 GT 1GB vs Radeon HD 6670 (OEM)

Intro

The GeForce 9800 GT 1GB makes use of a 65/55 nm design. nVidia has clocked the core frequency at 600 MHz. The GDDR3 memory runs at a speed of 900 MHz on this particular card. It features 112 SPUs as well as 56 Texture Address Units and 16 ROPs.

Compare all that to the Radeon HD 6670 (OEM), which has GPU core speed of 800 MHz, and 512 MB of GDDR5 memory running at 1000 MHz through a 128-bit bus. It also features 480 Stream Processors, 24 Texture Address Units, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 63 Watts
GeForce 9800 GT 1GB 105 Watts
Difference: 42 Watts (67%)

Memory Bandwidth

As far as performance goes, the Radeon HD 6670 (OEM) should in theory be just a bit better than the GeForce 9800 GT 1GB overall. (explain)

Radeon HD 6670 (OEM) 64000 MB/sec
GeForce 9800 GT 1GB 57600 MB/sec
Difference: 6400 (11%)

Texel Rate

The GeForce 9800 GT 1GB will be quite a bit (more or less 75%) better at AF than the Radeon HD 6670 (OEM). (explain)

GeForce 9800 GT 1GB 33600 Mtexels/sec
Radeon HD 6670 (OEM) 19200 Mtexels/sec
Difference: 14400 (75%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce 9800 GT 1GB is the winner, by a large margin. (explain)

GeForce 9800 GT 1GB 9600 Mpixels/sec
Radeon HD 6670 (OEM) 6400 Mpixels/sec
Difference: 3200 (50%)

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 9800 GT 1GB

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 9800 GT 1GB Radeon HD 6670 (OEM)
Manufacturer nVidia AMD
Year July 2008 February 2011
Code Name G92a/b Turks
Memory 1024 MB 512 MB
Core Speed 600 MHz 800 MHz
Memory Speed 1800 MHz 4000 MHz
Power (Max TDP) 105 watts 63 watts
Bandwidth 57600 MB/sec 64000 MB/sec
Texel Rate 33600 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 6400 Mpixels/sec
Unified Shaders 112 480
Texture Mapping Units 56 24
Render Output Units 16 8
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65/55 nm 40 nm
Transistors 754 million 715 million
Bus PCIe x16 2.0 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 information (in units of MB per second) that can be transported across the external memory interface within a second. It is worked out by multiplying the bus width by its memory clock speed. If it uses DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied 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 higher the texel rate, the better the card will be at handling 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 chip can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce 9800 GT 1GB

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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