GeForce GT 240 GDDR5 1GB vs GeForce GTS 150

Intro

Compare those specifications to the GeForce GTS 150, which uses a 55 nm design. nVidia has clocked the core frequency at 740 MHz. The GDDR3 memory works at a frequency of 500 MHz on this specific model. 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 240 GDDR5 1GB		70 Watts
GeForce GTS 150		141 Watts
	Difference: 71 Watts (101%)

Memory Bandwidth

The GeForce GT 240 GDDR5 1GB should theoretically be much faster than the GeForce GTS 150 overall. (explain)

GeForce GT 240 GDDR5 1GB		54400 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 22400 (70%)

Texel Rate

The GeForce GTS 150 should be much (about 169%) faster with regards to texture filtering than the GeForce GT 240 GDDR5 1GB. (explain)

GeForce GTS 150		47360 Mtexels/sec
GeForce GT 240 GDDR5 1GB		17600 Mtexels/sec
	Difference: 29760 (169%)

Pixel Rate

The GeForce GTS 150 will be much (approximately 169%) faster with regards to FSAA than the GeForce GT 240 GDDR5 1GB, and also should be capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTS 150		11840 Mpixels/sec
GeForce GT 240 GDDR5 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 data (measured in megabytes per second) that can be moved past the external memory interface within a second. It is worked out by multiplying the bus width by its memory speed. If the card has DDR memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 applied per second. This number is worked out by multiplying the total number of texture units of the card by the core clock speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Render Output Units by the the core clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.