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GeForce 9800 GT 512MB vs GeForce 9800 GTX+

Intro

The GeForce 9800 GT 512MB features a GPU core clock speed of 600 MHz, and the 512 MB of GDDR3 RAM runs at 900 MHz through a 256-bit bus. It also features 112 SPUs, 56 TAUs, and 16 ROPs.

Compare those specifications to the GeForce 9800 GTX+, which comes with a core clock frequency of 738 MHz and a GDDR3 memory speed of 1100 MHz. It also makes use of a 256-bit bus, and makes use of a 55 nm design. It features 128 SPUs, 64 TAUs, and 16 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GT 512MB 105 Watts
GeForce 9800 GTX+ 145 Watts
Difference: 40 Watts (38%)

Memory Bandwidth

As far as performance goes, the GeForce 9800 GTX+ should in theory be much better than the GeForce 9800 GT 512MB overall. (explain)

GeForce 9800 GTX+ 70400 MB/sec
GeForce 9800 GT 512MB 57600 MB/sec
Difference: 12800 (22%)

Texel Rate

The GeForce 9800 GTX+ will be much (about 41%) better at texture filtering than the GeForce 9800 GT 512MB. (explain)

GeForce 9800 GTX+ 47232 Mtexels/sec
GeForce 9800 GT 512MB 33600 Mtexels/sec
Difference: 13632 (41%)

Pixel Rate

The GeForce 9800 GTX+ will be quite a bit (more or less 23%) faster with regards to full screen anti-aliasing than the GeForce 9800 GT 512MB, and will be capable of handling higher resolutions without losing too much performance. (explain)

GeForce 9800 GTX+ 11808 Mpixels/sec
GeForce 9800 GT 512MB 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 512MB

Amazon.com

Check prices at:

GeForce 9800 GTX+

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 512MB GeForce 9800 GTX+
Manufacturer nVidia nVidia
Year July 2008 July 2008
Code Name G92a/b G92b
Memory 512 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 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 3.0

Memory Bandwidth: Memory bandwidth is the maximum amount of data (in units of megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the card's interface width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.

Display Prices

Hide Prices

GeForce 9800 GT 512MB

Amazon.com

Check prices at:

GeForce 9800 GTX+

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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