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GeForce 9800 GT 512MB vs GeForce GTS 450

Intro

The GeForce 9800 GT 512MB has a GPU clock speed of 600 MHz, and the 512 MB of GDDR3 memory runs at 900 MHz through a 256-bit bus. It also is made up of 112 Stream Processors, 56 TAUs, and 16 Raster Operation Units.

Compare those specifications to the GeForce GTS 450, which makes use of a 40 nm design. nVidia has set the core frequency at 783 MHz. The GDDR5 memory is set to run at a frequency of 902 MHz on this specific card. It features 192 SPUs along with 32 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GT 512MB 105 Watts
GeForce GTS 450 106 Watts
Difference: 1 Watts (1%)

Memory Bandwidth

The GeForce GTS 450, in theory, should perform just a bit faster than the GeForce 9800 GT 512MB overall. (explain)

GeForce GTS 450 57728 MB/sec
GeForce 9800 GT 512MB 57600 MB/sec
Difference: 128 (0%)

Texel Rate

The GeForce 9800 GT 512MB will be quite a bit (about 34%) better at anisotropic filtering than the GeForce GTS 450. (explain)

GeForce 9800 GT 512MB 33600 Mtexels/sec
GeForce GTS 450 25056 Mtexels/sec
Difference: 8544 (34%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce GTS 450 is the winner, and very much so. (explain)

GeForce GTS 450 12528 Mpixels/sec
GeForce 9800 GT 512MB 9600 Mpixels/sec
Difference: 2928 (31%)

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

Display Prices

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GeForce 9800 GT 512MB

Amazon.com

Check prices at:

GeForce GTS 450

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 512MB GeForce GTS 450
Manufacturer nVidia nVidia
Year July 2008 September 2010
Code Name G92a/b GF106
Memory 512 MB 512 MB
Core Speed 600 MHz 783 MHz
Memory Speed 1800 MHz 3608 MHz
Power (Max TDP) 105 watts 106 watts
Bandwidth 57600 MB/sec 57728 MB/sec
Texel Rate 33600 Mtexels/sec 25056 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 12528 Mpixels/sec
Unified Shaders 112 192
Texture Mapping Units 56 32
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65/55 nm 40 nm
Transistors 754 million 1170 million
Bus PCIe x16 2.0 PCIe 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 (measured in MB per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher 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 texture map elements (texels) that can be processed per second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also called 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 memory bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce 9800 GT 512MB

Amazon.com

Check prices at:

GeForce GTS 450

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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