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GeForce GT 430 vs Radeon HD 4830 512MB

Intro

The GeForce GT 430 has a GPU clock speed of 700 MHz, and the 512 MB of GDDR3 memory runs at 900 MHz through a 128-bit bus. It also is comprised of 96 Stream Processors, 16 TAUs, and 4 Raster Operation Units.

Compare all of that to the Radeon HD 4830 512MB, which makes use of a 55 nm design. AMD has clocked the core frequency at 575 MHz. The GDDR3 RAM runs at a frequency of 900 MHz on this particular model. It features 640(128x5) SPUs along with 32 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 60 Watts
Radeon HD 4830 512MB 95 Watts
Difference: 35 Watts (58%)

Memory Bandwidth

As far as performance goes, the Radeon HD 4830 512MB should in theory be quite a bit better than the GeForce GT 430 in general. (explain)

Radeon HD 4830 512MB 57600 MB/sec
GeForce GT 430 28800 MB/sec
Difference: 28800 (100%)

Texel Rate

The Radeon HD 4830 512MB will be quite a bit (about 64%) more effective at texture filtering than the GeForce GT 430. (explain)

Radeon HD 4830 512MB 18400 Mtexels/sec
GeForce GT 430 11200 Mtexels/sec
Difference: 7200 (64%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 4830 512MB is a better choice, by far. (explain)

Radeon HD 4830 512MB 9200 Mpixels/sec
GeForce GT 430 2800 Mpixels/sec
Difference: 6400 (229%)

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 GT 430

Amazon.com

Check prices at:

Radeon HD 4830 512MB

Amazon.com

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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 GT 430 Radeon HD 4830 512MB
Manufacturer nVidia AMD
Year October 2010 Oct 21, 2008
Code Name GF108 RV770 LE
Memory 512 MB 512 MB
Core Speed 700 MHz 575 MHz
Memory Speed 1800 MHz 1800 MHz
Power (Max TDP) 60 watts 95 watts
Bandwidth 28800 MB/sec 57600 MB/sec
Texel Rate 11200 Mtexels/sec 18400 Mtexels/sec
Pixel Rate 2800 Mpixels/sec 9200 Mpixels/sec
Unified Shaders 96 640(128x5)
Texture Mapping Units 16 32
Render Output Units 4 16
Bus Type GDDR3 GDDR3
Bus Width 128-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 585 million 956 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transported over the external memory interface within a second. The number is calculated by multiplying the bus width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Display Prices

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GeForce GT 430

Amazon.com

Check prices at:

Radeon HD 4830 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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