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GeForce GT 430 1GB vs Radeon HD 5450


Intro

The GeForce GT 430 1GB comes with a GPU core clock speed of 700 MHz, and the 1024 MB of GDDR3 RAM is set to run at 900 MHz through a 128-bit bus. It also is comprised of 96 Stream Processors, 16 TAUs, and 4 ROPs.

Compare all that to the Radeon HD 5450, which features core speeds of 650 MHz on the GPU, and 800 MHz on the 512 MB of DDR3 RAM. It features 80(16x5) SPUs as well as 8 Texture Address Units and 4 ROPs.

Display Graphs

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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

As far as performance goes, the GeForce GT 430 1GB should theoretically be quite a bit superior to the Radeon HD 5450 in general. (explain)

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

Texel Rate

The GeForce GT 430 1GB is a lot (about 115%) more effective 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

The GeForce GT 430 1GB will be a bit (more or less 8%) faster with regards to anti-aliasing than the Radeon HD 5450, and will be able to handle higher resolutions while still performing well. (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

GeForce GT 430 1GB

Radeon HD 5450

Specifications

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: Memory bandwidth is the max amount of data (counted in megabytes per second) that can be transferred across the external memory interface within a second. It's calculated by multiplying the card's bus width by the speed of its memory. In the case of DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the bandwidth is, 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 texture map elements (texels) that are applied in one second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.

GeForce GT 430 1GB

Radeon HD 5450

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