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GeForce GT 430 vs Radeon HD 7750


Intro

The GeForce GT 430 makes use of a 40 nm design. nVidia has clocked the core speed at 700 MHz. The GDDR3 memory works at a frequency of 900 MHz on this specific model. It features 96 SPUs along with 16 Texture Address Units and 4 ROPs.

Compare all that to the Radeon HD 7750, which has a clock speed of 800 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It is comprised of 512 SPUs, 32 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 7750 55 Watts
GeForce GT 430 60 Watts
Difference: 5 Watts (9%)

Memory Bandwidth

The Radeon HD 7750 should theoretically be quite a bit faster than the GeForce GT 430 overall. (explain)

Radeon HD 7750 72000 MB/sec
GeForce GT 430 28800 MB/sec
Difference: 43200 (150%)

Texel Rate

The Radeon HD 7750 should be a lot (approximately 129%) more effective at texture filtering than the GeForce GT 430. (explain)

Radeon HD 7750 25600 Mtexels/sec
GeForce GT 430 11200 Mtexels/sec
Difference: 14400 (129%)

Pixel Rate

The Radeon HD 7750 will be a lot (more or less 357%) better at AA than the GeForce GT 430, and able to handle higher resolutions more effectively. (explain)

Radeon HD 7750 12800 Mpixels/sec
GeForce GT 430 2800 Mpixels/sec
Difference: 10000 (357%)

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

Radeon HD 7750

Amazon.com

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 7750
Manufacturer nVidia AMD
Year October 2010 February 2012
Code Name GF108 Cape Verde Pro
Memory 512 MB 1024 MB
Core Speed 700 MHz 800 MHz
Memory Speed 1800 MHz 4500 MHz
Power (Max TDP) 60 watts 55 watts
Bandwidth 28800 MB/sec 72000 MB/sec
Texel Rate 11200 Mtexels/sec 25600 Mtexels/sec
Pixel Rate 2800 Mpixels/sec 12800 Mpixels/sec
Unified Shaders 96 512
Texture Mapping Units 16 32
Render Output Units 4 16
Bus Type GDDR3 GDDR5
Bus Width 128-bit 128-bit
Fab Process 40 nm 28 nm
Transistors 585 million 1500 million
Bus PCIe x16 PCIe 3.0 x16
DirectX Version DirectX 11 DirectX 11.1
OpenGL Version OpenGL 4.1 OpenGL 4.2

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in megabytes per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. In the case of DDR type RAM, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 can be processed per second. This 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 video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). 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 get to the max fill rate.

Display Prices

Hide Prices

GeForce GT 430

Amazon.com

Radeon HD 7750

Amazon.com

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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