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GeForce 9800 GX2 vs Radeon HD 5750 512MB

Intro

The GeForce 9800 GX2 comes with clock speeds of 600 MHz on the GPU, and 1000 MHz on the 512 MB of GDDR3 RAM. It features 128 SPUs along with 64 TAUs and 16 ROPs.

Compare that to the Radeon HD 5750 512MB, which uses a 40 nm design. AMD has clocked the core speed at 700 MHz. The GDDR5 RAM works at a frequency of 1150 MHz on this specific model. It features 720(144x5) SPUs as well as 36 TAUs and 16 Rasterization Operator Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5750 512MB 86 Watts
GeForce 9800 GX2 197 Watts
Difference: 111 Watts (129%)

Memory Bandwidth

As far as performance goes, the GeForce 9800 GX2 should theoretically be quite a bit superior to the Radeon HD 5750 512MB overall. (explain)

GeForce 9800 GX2 128000 MB/sec
Radeon HD 5750 512MB 73600 MB/sec
Difference: 54400 (74%)

Texel Rate

The GeForce 9800 GX2 will be a lot (approximately 205%) faster with regards to texture filtering than the Radeon HD 5750 512MB. (explain)

GeForce 9800 GX2 76800 Mtexels/sec
Radeon HD 5750 512MB 25200 Mtexels/sec
Difference: 51600 (205%)

Pixel Rate

The GeForce 9800 GX2 will be quite a bit (more or less 71%) more effective at FSAA than the Radeon HD 5750 512MB, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce 9800 GX2 19200 Mpixels/sec
Radeon HD 5750 512MB 11200 Mpixels/sec
Difference: 8000 (71%)

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:

Radeon HD 5750 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 GX2 Radeon HD 5750 512MB
Manufacturer nVidia AMD
Year Mar 2008 October 13, 2009
Code Name G92 Juniper LE
Memory 512 MB (x2) 512 MB
Core Speed 600 MHz (x2) 700 MHz
Memory Speed 2000 MHz (x2) 4600 MHz
Power (Max TDP) 197 watts 86 watts
Bandwidth 128000 MB/sec 73600 MB/sec
Texel Rate 76800 Mtexels/sec 25200 Mtexels/sec
Pixel Rate 19200 Mpixels/sec 11200 Mpixels/sec
Unified Shaders 128 (x2) 720(144x5)
Texture Mapping Units 64 (x2) 36
Render Output Units 16 (x2) 16
Bus Type GDDR3 GDDR5
Bus Width 256-bit (x2) 128-bit
Fab Process 65 nm 40 nm
Transistors 754 million 1040 million
Bus PCIe x16 2.0 PCIe 2.1 x16
DirectX Version DirectX 10 DirectX 11
OpenGL Version OpenGL 3.0 OpenGL 3.2

Memory Bandwidth: Bandwidth is the maximum amount of data (in units of MB per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the card's bus width by its memory speed. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling 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 can possibly record to its local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock speed of the card. 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 output rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the max fill rate.

Display Prices

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GeForce 9800 GX2

Amazon.com

Check prices at:

Radeon HD 5750 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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