GeForce GTS 450 1GB vs GeForce GTX 750

Intro

Compare those specs to the GeForce GTX 750, which has a clock frequency of 1020 MHz and a GDDR5 memory frequency of 1250 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 512 SPUs, 32 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
GeForce GTS 450 1GB		106 Watts
	Difference: 51 Watts (93%)

Memory Bandwidth

In theory, the GeForce GTX 750 should perform a lot faster than the GeForce GTS 450 1GB overall. (explain)

GeForce GTX 750		80000 MB/sec
GeForce GTS 450 1GB		57728 MB/sec
	Difference: 22272 (39%)

Texel Rate

The GeForce GTX 750 should be a lot (more or less 30%) more effective at AF than the GeForce GTS 450 1GB. (explain)

GeForce GTX 750		32640 Mtexels/sec
GeForce GTS 450 1GB		25056 Mtexels/sec
	Difference: 7584 (30%)

Pixel Rate

The GeForce GTX 750 should be much (about 30%) faster with regards to anti-aliasing than the GeForce GTS 450 1GB, and capable of handling higher screen resolutions without slowing down too much. (explain)

GeForce GTX 750		16320 Mpixels/sec
GeForce GTS 450 1GB		12528 Mpixels/sec
	Difference: 3792 (30%)

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 data (in units of megabytes per second) that can be transported across the external memory interface within a second. The number is calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This is worked out 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 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 number of pixels that the graphics card could possibly write to its local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on lots of other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.