GeForce GTS 150 vs GeForce GTX 750

Intro

Compare all that to the GeForce GTX 750, which features a clock frequency of 1020 MHz and a GDDR5 memory frequency of 1250 MHz. It also makes use of a 128-bit bus, and makes use of a 28 nm design. It features 512 SPUs, 32 Texture Address Units, and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
GeForce GTS 150		141 Watts
	Difference: 86 Watts (156%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 750 should theoretically be much superior to the GeForce GTS 150 in general. (explain)

GeForce GTX 750		80000 MB/sec
GeForce GTS 150		32000 MB/sec
	Difference: 48000 (150%)

Texel Rate

The GeForce GTS 150 is a lot (approximately 45%) more effective at AF than the GeForce GTX 750. (explain)

GeForce GTS 150		47360 Mtexels/sec
GeForce GTX 750		32640 Mtexels/sec
	Difference: 14720 (45%)

Pixel Rate

The GeForce GTX 750 is a lot (more or less 38%) faster with regards to full screen anti-aliasing than the GeForce GTS 150, and should be able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 750		16320 Mpixels/sec
GeForce GTS 150		11840 Mpixels/sec
	Difference: 4480 (38%)

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 maximum amount of data (in units of MB per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total texture units by the core clock 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 applied in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.