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GeForce 9800 GX2 vs GeForce GTX 295

Intro

The GeForce 9800 GX2 has a GPU clock speed of 600 MHz, and the 512 MB of GDDR3 RAM is set to run at 1000 MHz through a 256-bit bus. It also is comprised of 128 Stream Processors, 64 Texture Address Units, and 16 Raster Operation Units.

Compare all that to the GeForce GTX 295, which uses a 55 nm design. nVidia has clocked the core frequency at 576 MHz. The GDDR3 RAM runs at a speed of 999 MHz on this particular model. It features 240 SPUs as well as 80 Texture Address Units and 28 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GX2 197 Watts
GeForce GTX 295 289 Watts
Difference: 92 Watts (47%)

Memory Bandwidth

The GeForce GTX 295 should theoretically perform a lot faster than the GeForce 9800 GX2 in general. (explain)

GeForce GTX 295 223776 MB/sec
GeForce 9800 GX2 128000 MB/sec
Difference: 95776 (75%)

Texel Rate

The GeForce GTX 295 is just a bit (more or less 20%) more effective at anisotropic filtering than the GeForce 9800 GX2. (explain)

GeForce GTX 295 92160 Mtexels/sec
GeForce 9800 GX2 76800 Mtexels/sec
Difference: 15360 (20%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GTX 295 is a better choice, by far. (explain)

GeForce GTX 295 32256 Mpixels/sec
GeForce 9800 GX2 19200 Mpixels/sec
Difference: 13056 (68%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce 9800 GX2

Amazon.com

Check prices at:

GeForce GTX 295

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 GX2 GeForce GTX 295
Manufacturer nVidia nVidia
Year Mar 2008 January 8, 2009
Code Name G92 G200b
Memory 512 MB (x2) 896 MB (x2)
Core Speed 600 MHz (x2) 576 MHz (x2)
Memory Speed 2000 MHz (x2) 1998 MHz (x2)
Power (Max TDP) 197 watts 289 watts
Bandwidth 128000 MB/sec 223776 MB/sec
Texel Rate 76800 Mtexels/sec 92160 Mtexels/sec
Pixel Rate 19200 Mpixels/sec 32256 Mpixels/sec
Unified Shaders 128 (x2) 240 (x2)
Texture Mapping Units 64 (x2) 80 (x2)
Render Output Units 16 (x2) 28 (x2)
Bus Type GDDR3 GDDR3
Bus Width 256-bit (x2) 448-bit (x2)
Fab Process 65 nm 55 nm
Transistors 754 million 1400 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: Bandwidth is the largest amount of data (measured in MB per second) that can be transported over the external memory interface in one second. It is calculated by multiplying the bus width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the 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 in one second. This figure is worked out by multiplying the total number 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 processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on lots of 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 GX2

Amazon.com

Check prices at:

GeForce GTX 295

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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