GeForce GT 340 1GB vs GeForce GTS 150

Intro

Compare those specifications to the GeForce GTS 150, which has core clock speeds of 740 MHz on the GPU, and 500 MHz on the 1024 MB of GDDR3 RAM. It features 128 SPUs along with 64 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 340 1GB		69 Watts
GeForce GTS 150		141 Watts
	Difference: 72 Watts (104%)

Memory Bandwidth

As far as performance goes, the GeForce GT 340 1GB should in theory be much better than the GeForce GTS 150 in general. (explain)

GeForce GT 340 1GB		54400 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 22400 (70%)

Texel Rate

The GeForce GTS 150 should be much (more or less 169%) faster with regards to texture filtering than the GeForce GT 340 1GB. (explain)

GeForce GTS 150		47360 Mtexels/sec
GeForce GT 340 1GB		17600 Mtexels/sec
	Difference: 29760 (169%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the GeForce GTS 150 is a better choice, by far. (explain)

GeForce GTS 150		11840 Mpixels/sec
GeForce GT 340 1GB		4400 Mpixels/sec
	Difference: 7440 (169%)

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: Bandwidth is the largest amount of information (counted in MB per second) that can be moved past the external memory interface in one second. It's worked out by multiplying the bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 texture map elements (texels) that can be applied in one second. This number is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write 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 core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.