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GeForce GT 430 vs Radeon HD 3850 X2

Intro

The GeForce GT 430 has a clock frequency 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 ROPs.

Compare those specifications to the Radeon HD 3850 X2, which features core clock speeds of 668 MHz on the GPU, and 828 MHz on the 512 MB of GDDR3 memory. It features 320(64x5) SPUs as well as 16 Texture Address Units and 16 ROPs.

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 3850 X2 should theoretically be quite a bit faster than the GeForce GT 430 in general. (explain)

Radeon HD 3850 X2 105984 MB/sec
GeForce GT 430 28800 MB/sec
Difference: 77184 (268%)

Texel Rate

The Radeon HD 3850 X2 should be a lot (about 91%) faster with regards to anisotropic filtering than the GeForce GT 430. (explain)

Radeon HD 3850 X2 21376 Mtexels/sec
GeForce GT 430 11200 Mtexels/sec
Difference: 10176 (91%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 3850 X2 is a better choice, and very much so. (explain)

Radeon HD 3850 X2 21376 Mpixels/sec
GeForce GT 430 2800 Mpixels/sec
Difference: 18576 (663%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

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GeForce GT 430

Amazon.com

Check prices at:

Radeon HD 3850 X2

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 X2
Manufacturer nVidia AMD
Year October 2010 Apr 4, 2008
Code Name GF108 RV670 PRO
Memory 512 MB 512 MB (x2)
Core Speed 700 MHz 668 MHz (x2)
Memory Speed 1800 MHz 1656 MHz (x2)
Power (Max TDP) 60 watts (Unknown) watts
Bandwidth 28800 MB/sec 105984 MB/sec
Texel Rate 11200 Mtexels/sec 21376 Mtexels/sec
Pixel Rate 2800 Mpixels/sec 21376 Mpixels/sec
Unified Shaders 96 320(64x5) (x2)
Texture Mapping Units 16 16 (x2)
Render Output Units 4 16 (x2)
Bus Type GDDR3 GDDR3
Bus Width 128-bit 256-bit (x2)
Fab Process 40 nm 55 nm
Transistors 585 million (Unknown) million
Bus PCIe x16 PCIe 2.0 x16/(internal PCIe 1.1 x16)
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 MB per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the card's bus width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, 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 maximum amount of pixels that the graphics card can possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.

Display Prices

Hide Prices

GeForce GT 430

Amazon.com

Check prices at:

Radeon HD 3850 X2

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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