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GeForce 9800 GTX vs Radeon HD 4730

Intro

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

Compare that to the Radeon HD 4730, which comes with core speeds of 700 MHz on the GPU, and 900 MHz on the 512 MB of GDDR5 RAM. It features 640(128x5) SPUs along with 32 Texture Address Units and 8 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Both cards have the same power consumption.

Memory Bandwidth

Theoretically, the GeForce 9800 GTX should be quite a bit 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 much (about 93%) more effective at AF 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 a high resolution is important to you, then the GeForce 9800 GTX is superior to the Radeon HD 4730, by far. (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 max amount of data (counted in MB per second) that can be moved past the external memory interface in a second. It's worked out by multiplying the interface width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied per second. This figure is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The better this number, the better the video 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 could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max 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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