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GeForce 9800 GT 1GB vs GeForce GTS 250 512MB

Intro

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

Compare that to the GeForce GTS 250 512MB, which makes use of a 65/55 nm design. nVidia has clocked the core speed at 738 MHz. The GDDR3 memory works at a frequency of 1100 MHz on this specific card. It features 128 SPUs along with 64 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GT 1GB 105 Watts
GeForce GTS 250 512MB 145 Watts
Difference: 40 Watts (38%)

Memory Bandwidth

In theory, the GeForce GTS 250 512MB is 22% quicker than the GeForce 9800 GT 1GB in general, because of its greater data rate. (explain)

GeForce GTS 250 512MB 70400 MB/sec
GeForce 9800 GT 1GB 57600 MB/sec
Difference: 12800 (22%)

Texel Rate

The GeForce GTS 250 512MB should be much (more or less 41%) faster with regards to AF than the GeForce 9800 GT 1GB. (explain)

GeForce GTS 250 512MB 47232 Mtexels/sec
GeForce 9800 GT 1GB 33600 Mtexels/sec
Difference: 13632 (41%)

Pixel Rate

The GeForce GTS 250 512MB is much (approximately 23%) more effective at anti-aliasing than the GeForce 9800 GT 1GB, and should be able to handle higher resolutions more effectively. (explain)

GeForce GTS 250 512MB 11808 Mpixels/sec
GeForce 9800 GT 1GB 9600 Mpixels/sec
Difference: 2208 (23%)

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 GTS 250 512MB

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 GTS 250 512MB
Manufacturer nVidia nVidia
Year July 2008 March 3, 2009
Code Name G92a/b G92a/b
Memory 1024 MB 512 MB
Core Speed 600 MHz 738 MHz
Memory Speed 1800 MHz 2200 MHz
Power (Max TDP) 105 watts 145 watts
Bandwidth 57600 MB/sec 70400 MB/sec
Texel Rate 33600 Mtexels/sec 47232 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 11808 Mpixels/sec
Unified Shaders 112 128
Texture Mapping Units 56 64
Render Output Units 16 16
Bus Type GDDR3 GDDR3
Bus Width 256-bit 256-bit
Fab Process 65/55 nm 65/55 nm
Transistors 754 million 754 million
Bus PCIe x16 2.0 PCIe x16 2.0
DirectX Version DirectX 10 DirectX 10
OpenGL Version OpenGL 3.0 OpenGL 3.1

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 a second. The number is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed per second. This is worked out by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount 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 outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

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GeForce 9800 GT 1GB

Amazon.com

Check prices at:

GeForce GTS 250 512MB

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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