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GeForce GT 430 vs Radeon HD 6450 (OEM) 1GB

Intro

The GeForce GT 430 has a GPU clock speed of 700 MHz, and the 512 MB of GDDR3 memory runs at 900 MHz through a 128-bit bus. It also is made up of 96 Stream Processors, 16 TAUs, and 4 Raster Operation Units.

Compare those specifications to the Radeon HD 6450 (OEM) 1GB, which has a core clock speed of 750 MHz and a GDDR5 memory speed of 900 MHz. It also features a 64-bit memory bus, and makes use of a 40 nm design. It is comprised of 160 SPUs, 8 TAUs, and 4 ROPs.

(No game benchmarks for this combination yet.)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM) 1GB 31 Watts
GeForce GT 430 60 Watts
Difference: 29 Watts (94%)

Memory Bandwidth

Both cards have exactly the same memory bandwidth, so in theory they should perform the same. (explain)

Texel Rate

The GeForce GT 430 should be quite a bit (about 87%) better at anisotropic filtering than the Radeon HD 6450 (OEM) 1GB. (explain)

GeForce GT 430 11200 Mtexels/sec
Radeon HD 6450 (OEM) 1GB 6000 Mtexels/sec
Difference: 5200 (87%)

Pixel Rate

The Radeon HD 6450 (OEM) 1GB is a bit (more or less 7%) more effective at anti-aliasing than the GeForce GT 430, and capable of handling higher resolutions while still performing well. (explain)

Radeon HD 6450 (OEM) 1GB 3000 Mpixels/sec
GeForce GT 430 2800 Mpixels/sec
Difference: 200 (7%)

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

Please note that the price comparisons are based on search keywords, and might not be the exact same card listed on this page. We have no control over the accuracy of their search results.

GeForce GT 430

Amazon.com

Other US-based stores

Radeon HD 6450 (OEM) 1GB

Amazon.com

Other US-based stores

Specifications

Model GeForce GT 430 Radeon HD 6450 (OEM) 1GB
Manufacturer nVidia ATi
Year October 2010 February 2011
Code Name GF108 Caicos
Fab Process 40 nm 40 nm
Bus PCIe x16 PCIe 2.1 x16
Memory 512 MB 1024 MB
Core Speed 700 MHz 750 MHz
Shader Speed 1400 MHz (N/A) MHz
Memory Speed 900 MHz (1800 MHz effective) 900 MHz (3600 MHz effective)
Unified Shaders 96 160
Texture Mapping Units 16 8
Render Output Units 4 4
Bus Type GDDR3 GDDR5
Bus Width 128-bit 64-bit
DirectX Version DirectX 11 DirectX 11
OpenGL Version OpenGL 4.1 OpenGL 4.1
Power (Max TDP) 60 watts 31 watts
Shader Model 5.0 5.0
Bandwidth 28800 MB/sec 28800 MB/sec
Texel Rate 11200 Mtexels/sec 6000 Mtexels/sec
Pixel Rate 2800 Mpixels/sec 3000 Mpixels/sec

Memory Bandwidth: Bandwidth is the max amount of data (in units of MB per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the interface width by its memory clock speed. If the card has DDR type RAM, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range 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 calculated by multiplying the total number of 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 processed in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of colour 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 output rate also depends on quite a few other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.

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