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GeForce 9800 GTX+ vs GeForce GT 240 GDDR5 1GB

Intro

The GeForce 9800 GTX+ uses a 55 nm design. nVidia has clocked the core frequency at 738 MHz. The GDDR3 memory is set to run at a speed of 1100 MHz on this model. It features 128 SPUs along with 64 Texture Address Units and 16 ROPs.

Compare those specifications to the GeForce GT 240 GDDR5 1GB, which features a clock speed of 550 MHz and a GDDR5 memory speed of 850 MHz. It also uses a 128-bit memory bus, and uses a 40 nm design. It is comprised of 96 SPUs, 32 TAUs, and 8 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 240 GDDR5 1GB 70 Watts
GeForce 9800 GTX+ 145 Watts
Difference: 75 Watts (107%)

Memory Bandwidth

Performance-wise, the GeForce 9800 GTX+ should theoretically be quite a bit better than the GeForce GT 240 GDDR5 1GB overall. (explain)

GeForce 9800 GTX+ 70400 MB/sec
GeForce GT 240 GDDR5 1GB 54400 MB/sec
Difference: 16000 (29%)

Texel Rate

The GeForce 9800 GTX+ should be much (approximately 168%) better at anisotropic filtering than the GeForce GT 240 GDDR5 1GB. (explain)

GeForce 9800 GTX+ 47232 Mtexels/sec
GeForce GT 240 GDDR5 1GB 17600 Mtexels/sec
Difference: 29632 (168%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce 9800 GTX+ is the winner, by a large margin. (explain)

GeForce 9800 GTX+ 11808 Mpixels/sec
GeForce GT 240 GDDR5 1GB 4400 Mpixels/sec
Difference: 7408 (168%)

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 GT 240 GDDR5 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 GT 240 GDDR5 1GB
Manufacturer nVidia nVidia
Year July 2008 November 2009
Code Name G92b GT215
Memory 512 MB 1024 MB
Core Speed 738 MHz 550 MHz
Memory Speed 2200 MHz 3400 MHz
Power (Max TDP) 145 watts 70 watts
Bandwidth 70400 MB/sec 54400 MB/sec
Texel Rate 47232 Mtexels/sec 17600 Mtexels/sec
Pixel Rate 11808 Mpixels/sec 4400 Mpixels/sec
Unified Shaders 128 96
Texture Mapping Units 64 32
Render Output Units 16 8
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 55 nm 40 nm
Transistors 754 million 289 million
Bus PCIe x16 2.0 PCIe x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Bandwidth is the largest amount of information (in units of megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory speed. If it uses DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 number of texture map elements (texels) that can be processed per second. This figure is worked out 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the memory 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 GT 240 GDDR5 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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