GeForce GT 450 (OEM) vs GeForce GTX 650

Intro

Compare all that to the GeForce GTX 650, which has a clock frequency of 1058 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 384 SPUs, 32 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 650		64 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 42 Watts (66%)

Memory Bandwidth

The GeForce GT 450 (OEM) should in theory perform a little bit faster than the GeForce GTX 650 in general. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
GeForce GTX 650		80000 MB/sec
	Difference: 16000 (20%)

Texel Rate

The GeForce GTX 650 will be much (approximately 79%) better at anisotropic filtering than the GeForce GT 450 (OEM). (explain)

GeForce GTX 650		33856 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 14896 (79%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GT 450 (OEM) is the winner, but only just. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
GeForce GTX 650		16928 Mpixels/sec
	Difference: 2032 (12%)

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 max amount of data (in units of megabytes per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the interface width by the speed of its memory. If the card has DDR type RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the faster 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 in one second. This number 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 texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip could possibly record to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the card's clock speed. 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 fill 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 potential to reach the max fill rate.