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GeForce 9800 GTX vs Radeon HD 4730

Intro

The GeForce 9800 GTX features a core clock speed of 675 MHz and a GDDR3 memory speed of 1100 MHz. It also features a 256-bit memory bus, and uses a 65 nm design. It is comprised of 128 SPUs, 64 Texture Address Units, and 16 ROPs.

Compare those specs to the Radeon HD 4730, which features a core clock frequency of 700 MHz and a GDDR5 memory frequency of 900 MHz. It also makes use of a 128-bit bus, and makes use of a 55 nm design. It features 640(128x5) SPUs, 32 TAUs, and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

The GeForce 9800 GTX should in theory perform a lot faster than the Radeon HD 4730 overall. (explain)

GeForce 9800 GTX 70400 MB/sec
Radeon HD 4730 57600 MB/sec
Difference: 12800 (22%)

Texel Rate

The GeForce 9800 GTX will be quite a bit (more or less 93%) more effective at anisotropic filtering than the Radeon HD 4730. (explain)

GeForce 9800 GTX 43200 Mtexels/sec
Radeon HD 4730 22400 Mtexels/sec
Difference: 20800 (93%)

Pixel Rate

If running with high levels of AA is important to you, then the GeForce 9800 GTX is the winner, and very much so. (explain)

GeForce 9800 GTX 10800 Mpixels/sec
Radeon HD 4730 5600 Mpixels/sec
Difference: 5200 (93%)

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

Check prices at:

Radeon HD 4730

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 GTX Radeon HD 4730
Manufacturer nVidia AMD
Year April 2008 Jun 8, 2009
Code Name G92 RV770/CE
Memory 512 MB 512 MB
Core Speed 675 MHz 700 MHz
Memory Speed 2200 MHz 3600 MHz
Power (Max TDP) 140 watts 140 watts
Bandwidth 70400 MB/sec 57600 MB/sec
Texel Rate 43200 Mtexels/sec 22400 Mtexels/sec
Pixel Rate 10800 Mpixels/sec 5600 Mpixels/sec
Unified Shaders 128 640(128x5)
Texture Mapping Units 64 32
Render Output Units 16 8
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65 nm 55 nm
Transistors 754 million 956 million
Bus PCIe x16 2.0 PCIe 2.0 x16
DirectX Version DirectX 10 DirectX 10.1
OpenGL Version OpenGL 3.0 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of information (counted in MB per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied per second. This is calculated by multiplying the total number of texture units of the card by the core clock speed of the chip. The higher 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 the graphics card could possibly write to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

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GeForce 9800 GTX

Amazon.com

Check prices at:

Radeon HD 4730

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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