GeForce GT 320 vs GeForce GTS 150

Intro

Compare all of that to the GeForce GTS 150, which comes with a core clock frequency of 740 MHz and a GDDR3 memory speed of 500 MHz. It also uses a 256-bit memory bus, and makes use of a 55 nm design. It is made up of 128 SPUs, 64 Texture Address Units, 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 be much 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 will be quite a bit (approximately 265%) faster with regards to anisotropic filtering than the GeForce GT 320. (explain)

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

Pixel Rate

The GeForce GTS 150 should be quite a bit (more or less 174%) faster with regards to full screen anti-aliasing than the GeForce GT 320, and should be able to handle higher screen resolutions while still performing well. (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: Bandwidth is the largest amount of information (measured in megabytes per second) that can be transferred over the external memory interface in a second. It is calculated by multiplying the interface width by its memory speed. If it uses DDR memory, the result should be multiplied by 2 once 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are 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 better the texel rate, the better the video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.