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GeForce GT 430 1GB vs Radeon HD 4850 512MB

Intro

The GeForce GT 430 1GB comes with core clock speeds of 700 MHz on the GPU, and 900 MHz on the 1024 MB of GDDR3 memory. It features 96 SPUs as well as 16 TAUs and 4 ROPs.

Compare those specifications to the Radeon HD 4850 512MB, which comes with core clock speeds of 625 MHz on the GPU, and 993 MHz on the 512 MB of GDDR3 RAM. It features 800(160x5) SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB 60 Watts
Radeon HD 4850 512MB 110 Watts
Difference: 50 Watts (83%)

Memory Bandwidth

The Radeon HD 4850 512MB should in theory perform a lot faster than the GeForce GT 430 1GB overall. (explain)

Radeon HD 4850 512MB 63552 MB/sec
GeForce GT 430 1GB 28800 MB/sec
Difference: 34752 (121%)

Texel Rate

The Radeon HD 4850 512MB is quite a bit (about 123%) more effective at AF than the GeForce GT 430 1GB. (explain)

Radeon HD 4850 512MB 25000 Mtexels/sec
GeForce GT 430 1GB 11200 Mtexels/sec
Difference: 13800 (123%)

Pixel Rate

The Radeon HD 4850 512MB is much (approximately 257%) faster with regards to FSAA than the GeForce GT 430 1GB, and capable of handling higher resolutions more effectively. (explain)

Radeon HD 4850 512MB 10000 Mpixels/sec
GeForce GT 430 1GB 2800 Mpixels/sec
Difference: 7200 (257%)

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

Radeon HD 4850 512MB

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 1GB Radeon HD 4850 512MB
Manufacturer nVidia AMD
Year October 2010 Jun 25, 2008
Code Name GF108 RV770 PRO
Memory 1024 MB 512 MB
Core Speed 700 MHz 625 MHz
Memory Speed 1800 MHz 1986 MHz
Power (Max TDP) 60 watts 110 watts
Bandwidth 28800 MB/sec 63552 MB/sec
Texel Rate 11200 Mtexels/sec 25000 Mtexels/sec
Pixel Rate 2800 Mpixels/sec 10000 Mpixels/sec
Unified Shaders 96 800(160x5)
Texture Mapping Units 16 40
Render Output Units 4 16
Bus Type GDDR3 GDDR3
Bus Width 128-bit 256-bit
Fab Process 40 nm 55 nm
Transistors 585 million 956 million
Bus PCIe x16 PCIe 2.0 x16
DirectX Version DirectX 11 DirectX 10.1
OpenGL Version OpenGL 4.1 OpenGL 3.0

Memory Bandwidth: Memory bandwidth is the largest amount of information (counted in MB per second) that can be transported over the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better 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 in one second. This figure is calculated by multiplying the total amount of texture units of the card by the core 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.

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