GeForce GT 450 (OEM) vs GeForce GTX 750

Intro

Compare those specs to the GeForce GTX 750, which makes use of a 28 nm design. nVidia has set the core frequency at 1020 MHz. The GDDR5 RAM is set to run at a frequency of 1250 MHz on this particular card. It features 512 SPUs along with 32 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 750		55 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 51 Watts (93%)

Memory Bandwidth

Theoretically speaking, the GeForce GT 450 (OEM) should be a bit faster than the GeForce GTX 750 in general. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce GTX 750		80000 MB/sec
	Difference: 16000 (20%)

Texel Rate

The GeForce GTX 750 will be much (approximately 72%) more effective at AF than the GeForce GT 450 (OEM). (explain)

GeForce GTX 750		32640 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 13680 (72%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GT 450 (OEM) is the winner, but not by far. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce GTX 750		16320 Mpixels/sec
	Difference: 2640 (16%)

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 a second. The number is worked out by multiplying the bus width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better 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 can be processed per second. This is worked out by multiplying the total texture units of the card by the core speed of the chip. The better this number, the better the video card will be at handling 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 the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.