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GeForce GT 430 1GB vs Radeon HD 5450


The GeForce GT 430 1GB has a core clock speed of 700 MHz and a GDDR3 memory speed of 900 MHz. It also uses a 128-bit memory bus, and uses a 40 nm design. It is comprised of 96 SPUs, 16 Texture Address Units, and 4 ROPs.

Compare those specs to the Radeon HD 5450, which features core clock speeds of 650 MHz on the GPU, and 800 MHz on the 512 MB of DDR3 memory. It features 80(16x5) SPUs as well as 8 TAUs and 4 ROPs.

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5450 19 Watts
GeForce GT 430 1GB 60 Watts
Difference: 41 Watts (216%)

Memory Bandwidth

In theory, the GeForce GT 430 1GB should be 125% faster than the Radeon HD 5450 in general, because of its greater data rate. (explain)

GeForce GT 430 1GB 28800 MB/sec
Radeon HD 5450 12800 MB/sec
Difference: 16000 (125%)

Texel Rate

The GeForce GT 430 1GB will be quite a bit (more or less 115%) better at texture filtering than the Radeon HD 5450. (explain)

GeForce GT 430 1GB 11200 Mtexels/sec
Radeon HD 5450 5200 Mtexels/sec
Difference: 6000 (115%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GT 430 1GB is the winner, but only just. (explain)

GeForce GT 430 1GB 2800 Mpixels/sec
Radeon HD 5450 2600 Mpixels/sec
Difference: 200 (8%)

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

Radeon HD 5450

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.


Display Specifications

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Model GeForce GT 430 1GB Radeon HD 5450
Manufacturer nVidia AMD
Year October 2010 February 4, 2010
Code Name GF108 Cedar PRO
Memory 1024 MB 512 MB
Core Speed 700 MHz 650 MHz
Memory Speed 1800 MHz 1600 MHz
Power (Max TDP) 60 watts 19 watts
Bandwidth 28800 MB/sec 12800 MB/sec
Texel Rate 11200 Mtexels/sec 5200 Mtexels/sec
Pixel Rate 2800 Mpixels/sec 2600 Mpixels/sec
Unified Shaders 96 80(16x5)
Texture Mapping Units 16 8
Render Output Units 4 4
Bus Type GDDR3 DDR3
Bus Width 128-bit 64-bit
Fab Process 40 nm 40 nm
Transistors 585 million 292 million
Bus PCIe x16 PCIe 2.1 x16
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 3.2

Memory Bandwidth: Bandwidth is the maximum amount of information (in units of megabytes per second) that can be moved past the external memory interface in one second. The number is calculated by multiplying the bus width by its memory speed. If it uses DDR memory, it should be multiplied by 2 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, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.


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