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GeForce 9800 GT 1GB vs Radeon HD 4730

Intro

The GeForce 9800 GT 1GB comes with a GPU core clock speed of 600 MHz, and the 1024 MB of GDDR3 memory runs at 900 MHz through a 256-bit bus. It also is comprised of 112 SPUs, 56 Texture Address Units, and 16 Raster Operation Units.

Compare all that to the Radeon HD 4730, which features a GPU core clock speed of 700 MHz, and 512 MB of GDDR5 memory set to run at 900 MHz through a 128-bit bus. It also is made up of 640(128x5) Stream Processors, 32 TAUs, and 8 Raster Operation Units.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce 9800 GT 1GB 105 Watts
Radeon HD 4730 140 Watts
Difference: 35 Watts (33%)

Memory Bandwidth

Both cards have exactly the same memory bandwidth, so theoretically they should perform the same. (explain)

Texel Rate

The GeForce 9800 GT 1GB is a lot (approximately 50%) better at texture filtering than the Radeon HD 4730. (explain)

GeForce 9800 GT 1GB 33600 Mtexels/sec
Radeon HD 4730 22400 Mtexels/sec
Difference: 11200 (50%)

Pixel Rate

If running with a high resolution is important to you, then the GeForce 9800 GT 1GB is the winner, and very much so. (explain)

GeForce 9800 GT 1GB 9600 Mpixels/sec
Radeon HD 4730 5600 Mpixels/sec
Difference: 4000 (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.

Price Comparison

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GeForce 9800 GT 1GB

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 GT 1GB Radeon HD 4730
Manufacturer nVidia AMD
Year July 2008 Jun 8, 2009
Code Name G92a/b RV770/CE
Memory 1024 MB 512 MB
Core Speed 600 MHz 700 MHz
Memory Speed 1800 MHz 3600 MHz
Power (Max TDP) 105 watts 140 watts
Bandwidth 57600 MB/sec 57600 MB/sec
Texel Rate 33600 Mtexels/sec 22400 Mtexels/sec
Pixel Rate 9600 Mpixels/sec 5600 Mpixels/sec
Unified Shaders 112 640(128x5)
Texture Mapping Units 56 32
Render Output Units 16 8
Bus Type GDDR3 GDDR5
Bus Width 256-bit 128-bit
Fab Process 65/55 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 largest amount of information (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 bus width by its memory speed. If the card has DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This is worked out by multiplying the total amount of texture units of the card by the core 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 per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

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GeForce 9800 GT 1GB

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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