GeForce 920M 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 runs at a speed of 500 MHz on this particular model. It features 128 SPUs along with 64 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the GeForce GTS 150 should in theory be much superior to the GeForce 920M in general. (explain)

GeForce GTS 150		32000 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 17600 (122%)

Texel Rate

The GeForce GTS 150 is quite a bit (approximately 55%) more effective at texture filtering than the GeForce 920M. (explain)

GeForce GTS 150		47360 Mtexels/sec
GeForce 920M		30528 Mtexels/sec
	Difference: 16832 (55%)

Pixel Rate

The GeForce GTS 150 is quite a bit (more or less 55%) more effective at full screen anti-aliasing than the GeForce 920M, and should be able to handle higher screen resolutions while still performing well. (explain)

GeForce GTS 150		11840 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 4208 (55%)

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 data (counted in megabytes per second) that can be moved across the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.