GeForce GT 430 1GB vs GeForce GTS 150

Intro

Compare those specs to the GeForce GTS 150, which makes use of a 55 nm design. nVidia has clocked the core speed at 740 MHz. The GDDR3 memory works at a speed of 500 MHz on this specific model. It features 128 SPUs along with 64 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
GeForce GTS 150		141 Watts
	Difference: 81 Watts (135%)

Memory Bandwidth

Theoretically speaking, the GeForce GTS 150 will be 11% quicker than the GeForce GT 430 1GB in general, because of its higher bandwidth. (explain)

GeForce GTS 150		32000 MB/sec
GeForce GT 430 1GB		28800 MB/sec
	Difference: 3200 (11%)

Texel Rate

The GeForce GTS 150 is a lot (approximately 323%) better at texture filtering than the GeForce GT 430 1GB. (explain)

GeForce GTS 150		47360 Mtexels/sec
GeForce GT 430 1GB		11200 Mtexels/sec
	Difference: 36160 (323%)

Pixel Rate

The GeForce GTS 150 is much (more or less 323%) faster with regards to FSAA than the GeForce GT 430 1GB, and also able to handle higher resolutions better. (explain)

GeForce GTS 150		11840 Mpixels/sec
GeForce GT 430 1GB		2800 Mpixels/sec
	Difference: 9040 (323%)

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

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in megabytes per second) that can be moved across the external memory interface in one second. The number is worked out by multiplying the card's interface width by its memory speed. In the case of DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of ROPs by the the core 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, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.