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GeForce 9800 GTX vs GeForce GTS 450 1GB

Intro

The GeForce 9800 GTX has a core clock speed of 675 MHz and a GDDR3 memory frequency of 1100 MHz. It also makes use of a 256-bit bus, and makes use of a 65 nm design. It is comprised of 128 SPUs, 64 TAUs, and 16 ROPs.

Compare those specifications to the GeForce GTS 450 1GB, which features core clock speeds of 783 MHz on the GPU, and 902 MHz on the 1024 MB of GDDR5 RAM. It features 192 SPUs along with 32 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTS 450 1GB 106 Watts
GeForce 9800 GTX 140 Watts
Difference: 34 Watts (32%)

Memory Bandwidth

In theory, the GeForce 9800 GTX is 22% faster than the GeForce GTS 450 1GB in general, due to its higher data rate. (explain)

GeForce 9800 GTX 70400 MB/sec
GeForce GTS 450 1GB 57728 MB/sec
Difference: 12672 (22%)

Texel Rate

The GeForce 9800 GTX will be quite a bit (more or less 72%) faster with regards to anisotropic filtering than the GeForce GTS 450 1GB. (explain)

GeForce 9800 GTX 43200 Mtexels/sec
GeForce GTS 450 1GB 25056 Mtexels/sec
Difference: 18144 (72%)

Pixel Rate

If using high levels of AA is important to you, then the GeForce GTS 450 1GB is a better choice, not by a very large margin though. (explain)

GeForce GTS 450 1GB 12528 Mpixels/sec
GeForce 9800 GTX 10800 Mpixels/sec
Difference: 1728 (16%)

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

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GeForce GTS 450 1GB

Amazon.com

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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 GeForce GTS 450 1GB
Manufacturer nVidia nVidia
Year April 2008 September 2010
Code Name G92 GF106
Memory 512 MB 1024 MB
Core Speed 675 MHz 783 MHz
Memory Speed 2200 MHz 3608 MHz
Power (Max TDP) 140 watts 106 watts
Bandwidth 70400 MB/sec 57728 MB/sec
Texel Rate 43200 Mtexels/sec 25056 Mtexels/sec
Pixel Rate 10800 Mpixels/sec 12528 Mpixels/sec
Unified Shaders 128 192
Texture Mapping Units 64 32
Render Output Units 16 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65 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 information (in units of MB per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, 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 texture map elements (texels) that are processed per second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the graphics 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 amount of pixels the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few 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:

GeForce GTS 450 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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