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GeForce GT 430 1GB vs Radeon HD 3870 512MB

Intro

The GeForce GT 430 1GB comes with a clock frequency of 700 MHz and a GDDR3 memory speed of 900 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It is comprised of 96 SPUs, 16 TAUs, and 4 ROPs.

Compare all that to the Radeon HD 3870 512MB, which uses a 55 nm design. AMD has clocked the core speed at 775 MHz. The GDDR3 memory runs at a speed of 900 MHz on this model. It features 320(64x5) SPUs along with 16 TAUs and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB 60 Watts
Radeon HD 3870 512MB 106 Watts
Difference: 46 Watts (77%)

Memory Bandwidth

The Radeon HD 3870 512MB, in theory, should be quite a bit faster than the GeForce GT 430 1GB in general. (explain)

Radeon HD 3870 512MB 57600 MB/sec
GeForce GT 430 1GB 28800 MB/sec
Difference: 28800 (100%)

Texel Rate

The Radeon HD 3870 512MB should be a small bit (about 11%) faster with regards to texture filtering than the GeForce GT 430 1GB. (explain)

Radeon HD 3870 512MB 12400 Mtexels/sec
GeForce GT 430 1GB 11200 Mtexels/sec
Difference: 1200 (11%)

Pixel Rate

The Radeon HD 3870 512MB will be much (approximately 343%) better at full screen anti-aliasing than the GeForce GT 430 1GB, and also will be capable of handling higher screen resolutions better. (explain)

Radeon HD 3870 512MB 12400 Mpixels/sec
GeForce GT 430 1GB 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 1GB

Amazon.com

Check prices at:

Radeon HD 3870 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.

Specifications

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Model GeForce GT 430 1GB Radeon HD 3870 512MB
Manufacturer nVidia AMD
Year October 2010 Nov 19, 2007
Code Name GF108 RV670 XT
Memory 1024 MB 512 MB
Core Speed 700 MHz 775 MHz
Memory Speed 1800 MHz 1800 MHz
Power (Max TDP) 60 watts 106 watts
Bandwidth 28800 MB/sec 57600 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 GDDR3
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 max amount of information (measured in megabytes per second) that can be transported over the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory clock speed. If the card has DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen 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 by the core clock speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

Display Prices

Hide Prices

GeForce GT 430 1GB

Amazon.com

Check prices at:

Radeon HD 3870 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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