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GeForce GT 430 1GB vs Radeon HD 5830

Intro

The GeForce GT 430 1GB has 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 Rasterization Operator Units.

Compare all that to the Radeon HD 5830, which comes with a GPU core clock speed of 800 MHz, and 1024 MB of GDDR5 RAM set to run at 1000 MHz through a 256-bit bus. It also is made up of 1120(224x5) SPUs, 56 TAUs, and 16 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 430 1GB 60 Watts
Radeon HD 5830 175 Watts
Difference: 115 Watts (192%)

Memory Bandwidth

Theoretically, the Radeon HD 5830 should perform quite a bit faster than the GeForce GT 430 1GB overall. (explain)

Radeon HD 5830 128000 MB/sec
GeForce GT 430 1GB 28800 MB/sec
Difference: 99200 (344%)

Texel Rate

The Radeon HD 5830 will be a lot (approximately 300%) better at anisotropic filtering than the GeForce GT 430 1GB. (explain)

Radeon HD 5830 44800 Mtexels/sec
GeForce GT 430 1GB 11200 Mtexels/sec
Difference: 33600 (300%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon HD 5830 is a better choice, and very much so. (explain)

Radeon HD 5830 12800 Mpixels/sec
GeForce GT 430 1GB 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

GeForce GT 430 1GB

Amazon.com

Radeon HD 5830

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

Model GeForce GT 430 1GB Radeon HD 5830
Manufacturer nVidia AMD
Year October 2010 February 25, 2010
Code Name GF108 Cypress LE
Fab Process 40 nm 40 nm
Bus PCIe x16 PCIe 2.1 x16
Memory 1024 MB 1024 MB
Core Speed 700 MHz 800 MHz
Shader Speed 1400 MHz (N/A) MHz
Memory Speed 900 MHz (1800 MHz effective) 1000 MHz (4000 MHz effective)
Unified Shaders 96 1120(224x5)
Texture Mapping Units 16 56
Render Output Units 4 16
Bus Type GDDR3 GDDR5
Bus Width 128-bit 256-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 3.2
Power (Max TDP) 60 watts 175 watts
Shader Model 5.0 5.0
Bandwidth 28800 MB/sec 128000 MB/sec
Texel Rate 11200 Mtexels/sec 44800 Mtexels/sec
Pixel Rate 2800 Mpixels/sec 12800 Mpixels/sec

Memory Bandwidth: Memory bandwidth is the largest amount of information (in units of MB per second) that can be moved past the external memory interface in a second. The number is worked out by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied in one second. This figure is worked out by multiplying the total texture units of the card by the core 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 applied in a second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number 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, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the max fill rate.

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