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

Intro

The GeForce 9800 GTX features a core clock speed of 675 MHz and a GDDR3 memory frequency of 1100 MHz. It also features a 256-bit bus, and uses a 65 nm design. It features 128 SPUs, 64 Texture Address Units, and 16 ROPs.

Compare those specifications to the Radeon HD 6670 (OEM) 1GB, which makes use of a 40 nm design. AMD has clocked the core frequency at 800 MHz. The GDDR5 RAM is set to run at a frequency of 1000 MHz on this 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) 1GB 63 Watts
GeForce 9800 GTX 140 Watts
Difference: 77 Watts (122%)

Memory Bandwidth

The GeForce 9800 GTX, in theory, should perform a little bit faster than the Radeon HD 6670 (OEM) 1GB in general. (explain)

GeForce 9800 GTX 70400 MB/sec
Radeon HD 6670 (OEM) 1GB 64000 MB/sec
Difference: 6400 (10%)

Texel Rate

The GeForce 9800 GTX will be quite a bit (more or less 125%) more effective at AF than the Radeon HD 6670 (OEM) 1GB. (explain)

GeForce 9800 GTX 43200 Mtexels/sec
Radeon HD 6670 (OEM) 1GB 19200 Mtexels/sec
Difference: 24000 (125%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce 9800 GTX is the winner, and very much so. (explain)

GeForce 9800 GTX 10800 Mpixels/sec
Radeon HD 6670 (OEM) 1GB 6400 Mpixels/sec
Difference: 4400 (69%)

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 GTX

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 9800 GTX Radeon HD 6670 (OEM) 1GB
Manufacturer nVidia AMD
Year April 2008 February 2011
Code Name G92 Turks
Memory 512 MB 1024 MB
Core Speed 675 MHz 800 MHz
Memory Speed 2200 MHz 4000 MHz
Power (Max TDP) 140 watts 63 watts
Bandwidth 70400 MB/sec 64000 MB/sec
Texel Rate 43200 Mtexels/sec 19200 Mtexels/sec
Pixel Rate 10800 Mpixels/sec 6400 Mpixels/sec
Unified Shaders 128 480
Texture Mapping Units 64 24
Render Output Units 16 8
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65 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 max amount of data (measured in MB per second) that can be moved across the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the 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 number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to the 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 speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

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GeForce 9800 GTX

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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