GeForce GT 320 vs GeForce GTS 150

Intro

Compare those specs to the GeForce GTS 150, which comes with GPU core speed of 740 MHz, and 1024 MB of GDDR3 memory running at 500 MHz through a 256-bit bus. It also features 128 SPUs, 64 TAUs, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 320		43 Watts
GeForce GTS 150		141 Watts
	Difference: 98 Watts (228%)

Memory Bandwidth

In theory, the GeForce GTS 150 should perform quite a bit faster than the GeForce GT 320 in general. (explain)

GeForce GTS 150		32000 MB/sec
GeForce GT 320		25280 MB/sec
	Difference: 6720 (27%)

Texel Rate

The GeForce GTS 150 is a lot (about 265%) better at AF than the GeForce GT 320. (explain)

GeForce GTS 150		47360 Mtexels/sec
GeForce GT 320		12960 Mtexels/sec
	Difference: 34400 (265%)

Pixel Rate

If using a high resolution is important to you, then the GeForce GTS 150 is superior to the GeForce GT 320, by far. (explain)

GeForce GTS 150		11840 Mpixels/sec
GeForce GT 320		4320 Mpixels/sec
	Difference: 7520 (174%)

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 max amount of information (measured in megabytes per second) that can be moved over the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. If it uses DDR type RAM, it must 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, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel 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.