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GeForce 9800 GT 1GB vs GeForce GTX 580 3GB

Intro

The GeForce 9800 GT 1GB has a clock speed of 600 MHz and a GDDR3 memory speed of 900 MHz. It also makes use of a 256-bit memory bus, and uses a 65/55 nm design. It features 112 SPUs, 56 TAUs, and 16 ROPs.

Compare those specs to the GeForce GTX 580 3GB, which has a core clock frequency of 772 MHz and a GDDR5 memory speed of 1002 MHz. It also features a 384-bit memory bus, and makes use of a 40 nm design. It is made up of 512 SPUs, 64 TAUs, and 48 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GT 1GB 105 Watts
GeForce GTX 580 3GB 244 Watts
Difference: 139 Watts (132%)

Memory Bandwidth

Performance-wise, the GeForce GTX 580 3GB should in theory be much superior to the GeForce 9800 GT 1GB in general. (explain)

GeForce GTX 580 3GB 192384 MB/sec
GeForce 9800 GT 1GB 57600 MB/sec
Difference: 134784 (234%)

Texel Rate

The GeForce GTX 580 3GB should be much (about 47%) faster with regards to AF than the GeForce 9800 GT 1GB. (explain)

GeForce GTX 580 3GB 49408 Mtexels/sec
GeForce 9800 GT 1GB 33600 Mtexels/sec
Difference: 15808 (47%)

Pixel Rate

The GeForce GTX 580 3GB is quite a bit (more or less 286%) more effective at AA than the GeForce 9800 GT 1GB, and will be capable of handling higher screen resolutions while still performing well. (explain)

GeForce GTX 580 3GB 37056 Mpixels/sec
GeForce 9800 GT 1GB 9600 Mpixels/sec
Difference: 27456 (286%)

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:

GeForce GTX 580 3GB

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 GeForce GTX 580 3GB
Manufacturer nVidia nVidia
Year July 2008 November 2010
Code Name G92a/b GF110
Memory 1024 MB 3072 MB
Core Speed 600 MHz 772 MHz
Memory Speed 1800 MHz 4008 MHz
Power (Max TDP) 105 watts 244 watts
Bandwidth 57600 MB/sec 192384 MB/sec
Texel Rate 33600 Mtexels/sec 49408 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 37056 Mpixels/sec
Unified Shaders 112 512
Texture Mapping Units 56 64
Render Output Units 16 48
Bus Type GDDR3 GDDR5
Bus Width 256-bit 384-bit
Fab Process 65/55 nm 40 nm
Transistors 754 million 3000 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 4.1

Memory Bandwidth: Bandwidth is the max amount of information (in units of megabytes per second) that can be moved past the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR type RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total amount of texture units of the card by the core speed of the chip. The higher this number, 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 amount of pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

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GeForce 9800 GT 1GB

Amazon.com

Check prices at:

GeForce GTX 580 3GB

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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