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GeForce GT 430 vs Radeon HD 3870 1GB

Intro

The GeForce GT 430 uses a 40 nm design. nVidia has set the core speed at 700 MHz. The GDDR3 RAM works at a speed of 900 MHz on this model. It features 96 SPUs as well as 16 TAUs and 4 Rasterization Operator Units.

Compare those specifications to the Radeon HD 3870 1GB, which uses a 55 nm design. AMD has clocked the core frequency at 775 MHz. The GDDR4 RAM is set to run at a speed of 1125 MHz on this model. It features 320(64x5) SPUs as well as 16 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 60 Watts
Radeon HD 3870 1GB 106 Watts
Difference: 46 Watts (77%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 3870 1GB will be 150% quicker than the GeForce GT 430 overall, because of its greater bandwidth. (explain)

Radeon HD 3870 1GB 72000 MB/sec
GeForce GT 430 28800 MB/sec
Difference: 43200 (150%)

Texel Rate

The Radeon HD 3870 1GB is a small bit (more or less 11%) more effective at texture filtering than the GeForce GT 430. (explain)

Radeon HD 3870 1GB 12400 Mtexels/sec
GeForce GT 430 11200 Mtexels/sec
Difference: 1200 (11%)

Pixel Rate

The Radeon HD 3870 1GB will be much (more or less 343%) faster with regards to full screen anti-aliasing than the GeForce GT 430, and able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 3870 1GB 12400 Mpixels/sec
GeForce GT 430 2800 Mpixels/sec
Difference: 9600 (343%)

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 3870 1GB

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 GT 430 Radeon HD 3870 1GB
Manufacturer nVidia AMD
Year October 2010 Nov 19, 2007
Code Name GF108 RV670 XT
Memory 512 MB 1024 MB
Core Speed 700 MHz 775 MHz
Memory Speed 1800 MHz 2250 MHz
Power (Max TDP) 60 watts 106 watts
Bandwidth 28800 MB/sec 72000 MB/sec
Texel Rate 11200 Mtexels/sec 12400 Mtexels/sec
Pixel Rate 2800 Mpixels/sec 12400 Mpixels/sec
Unified Shaders 96 320(64x5)
Texture Mapping Units 16 16
Render Output Units 4 16
Bus Type GDDR3 GDDR4
Bus Width 128-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 585 million (Unknown) million
Bus PCIe x16 PCIe 2.0 x16/AGP 8x
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of MB per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster 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 are processed per second. This figure is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as 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, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GT 430

Amazon.com

Check prices at:

Radeon HD 3870 1GB

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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