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GeForce GT 430 vs Radeon HD 3850 256MB

Intro

The GeForce GT 430 features a clock speed of 700 MHz and a GDDR3 memory frequency of 900 MHz. It also features a 128-bit bus, and uses a 40 nm design. It is comprised of 96 SPUs, 16 TAUs, and 4 Raster Operation Units.

Compare those specifications to the Radeon HD 3850 256MB, which has a clock frequency of 668 MHz and a GDDR3 memory speed of 828 MHz. It also features a 256-bit memory bus, and uses a 55 nm design. It is made up of 320(64x5) SPUs, 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 3850 256MB 75 Watts
Difference: 15 Watts (25%)

Memory Bandwidth

The Radeon HD 3850 256MB, in theory, should perform a lot faster than the GeForce GT 430 overall. (explain)

Radeon HD 3850 256MB 52992 MB/sec
GeForce GT 430 28800 MB/sec
Difference: 24192 (84%)

Texel Rate

The GeForce GT 430 is just a bit (approximately 5%) more effective at anisotropic filtering than the Radeon HD 3850 256MB. (explain)

GeForce GT 430 11200 Mtexels/sec
Radeon HD 3850 256MB 10688 Mtexels/sec
Difference: 512 (5%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon HD 3850 256MB is the winner, by a large margin. (explain)

Radeon HD 3850 256MB 10688 Mpixels/sec
GeForce GT 430 2800 Mpixels/sec
Difference: 7888 (282%)

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 3850 256MB

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 3850 256MB
Manufacturer nVidia AMD
Year October 2010 Nov 19, 2007
Code Name GF108 RV670 PRO
Memory 512 MB 256 MB
Core Speed 700 MHz 668 MHz
Memory Speed 1800 MHz 1656 MHz
Power (Max TDP) 60 watts 75 watts
Bandwidth 28800 MB/sec 52992 MB/sec
Texel Rate 11200 Mtexels/sec 10688 Mtexels/sec
Pixel Rate 2800 Mpixels/sec 10688 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 largest amount of information (measured in megabytes per second) that can be transported across the external memory interface within a second. The number is worked out by multiplying the card's bus width by its memory clock speed. In the case of DDR type memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied in one second. This figure is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The better the texel rate, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per 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 calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.

Display Prices

Hide Prices

GeForce GT 430

Amazon.com

Check prices at:

Radeon HD 3850 256MB

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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