GeForce GT 450 (OEM) vs GeForce GTX 650

Intro

Compare all of that to the GeForce GTX 650, which has a clock speed of 1058 MHz and a GDDR5 memory frequency of 1250 MHz. It also makes use of a 128-bit memory bus, and makes use of a 28 nm design. It is made up of 384 SPUs, 32 TAUs, 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), in theory, should be 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 should be a lot (more or less 79%) more effective at AF 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 resolution is important to you, then the GeForce GT 450 (OEM) is superior to the GeForce GTX 650, not by a very large margin though. (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: Memory bandwidth is the largest amount of information (counted in MB per second) that can be moved over the external memory interface in one second. It is calculated by multiplying the card's interface width by its memory clock speed. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better 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 can be applied in one second. This is calculated by multiplying the total number of texture units by the core clock 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 applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also 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 memory bandwidth is, the lower the ability to get to the max fill rate.