Compare any two graphics cards:
VS

GeForce 9800 GTX vs GeForce 9800 GX2

Intro

The GeForce 9800 GTX features a GPU core speed of 675 MHz, and the 512 MB of GDDR3 RAM is set to run at 1100 MHz through a 256-bit bus. It also is made up of 128 Stream Processors, 64 TAUs, and 16 Raster Operation Units.

Compare all that to the GeForce 9800 GX2, which comes with GPU core speed of 600 MHz, and 512 MB of GDDR3 RAM set to run at 1000 MHz through a 256-bit bus. It also features 128 SPUs, 64 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GTX 140 Watts
GeForce 9800 GX2 197 Watts
Difference: 57 Watts (41%)

Memory Bandwidth

Theoretically, the GeForce 9800 GX2 should be quite a bit faster than the GeForce 9800 GTX overall. (explain)

GeForce 9800 GX2 128000 MB/sec
GeForce 9800 GTX 70400 MB/sec
Difference: 57600 (82%)

Texel Rate

The GeForce 9800 GX2 is much (more or less 78%) more effective at anisotropic filtering than the GeForce 9800 GTX. (explain)

GeForce 9800 GX2 76800 Mtexels/sec
GeForce 9800 GTX 43200 Mtexels/sec
Difference: 33600 (78%)

Pixel Rate

If using a high resolution is important to you, then the GeForce 9800 GX2 is the winner, and very much so. (explain)

GeForce 9800 GX2 19200 Mpixels/sec
GeForce 9800 GTX 10800 Mpixels/sec
Difference: 8400 (78%)

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

Display Prices

Hide Prices

GeForce 9800 GTX

Amazon.com

Check prices at:

GeForce 9800 GX2

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

Display Specifications

Hide Specifications

Model GeForce 9800 GTX GeForce 9800 GX2
Manufacturer nVidia nVidia
Year April 2008 Mar 2008
Code Name G92 G92
Memory 512 MB 512 MB (x2)
Core Speed 675 MHz 600 MHz (x2)
Memory Speed 2200 MHz 2000 MHz (x2)
Power (Max TDP) 140 watts 197 watts
Bandwidth 70400 MB/sec 128000 MB/sec
Texel Rate 43200 Mtexels/sec 76800 Mtexels/sec
Pixel Rate 10800 Mpixels/sec 19200 Mpixels/sec
Unified Shaders 128 128 (x2)
Texture Mapping Units 64 64 (x2)
Render Output Units 16 16 (x2)
Bus Type GDDR3 GDDR3
Bus Width 256-bit 256-bit (x2)
Fab Process 65 nm 65 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 3.0

Memory Bandwidth: Memory bandwidth is the max amount of information (in units of MB per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the video card will be at 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 could possibly record to its local memory per second - measured in millions of pixels per second. The number is worked out 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 filling the screen with pixels (the image). The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce 9800 GTX

Amazon.com

Check prices at:

GeForce 9800 GX2

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.

Comments

Be the first to leave a comment!

Your email address will not be published. Required fields are marked *


*

WordPress Anti Spam by WP-SpamShield