GeForce GT 450 (OEM) vs GeForce GTX 590

Intro

Compare those specifications to the GeForce GTX 590, which has clock speeds of 607 MHz on the GPU, and 855 MHz on the 1536 MB of GDDR5 RAM. It features 512 SPUs as well as 64 Texture Address Units and 48 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
GeForce GTX 590		365 Watts
	Difference: 259 Watts (244%)

Memory Bandwidth

In theory, the GeForce GTX 590 is 242% faster than the GeForce GT 450 (OEM) in general, because of its greater data rate. (explain)

GeForce GTX 590		328320 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 232320 (242%)

Texel Rate

The GeForce GTX 590 will be quite a bit (more or less 310%) better at anisotropic filtering than the GeForce GT 450 (OEM). (explain)

GeForce GTX 590		77696 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 58736 (310%)

Pixel Rate

The GeForce GTX 590 will be quite a bit (more or less 207%) more effective at anti-aliasing than the GeForce GT 450 (OEM), and capable of handling higher resolutions better. (explain)

GeForce GTX 590		58272 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 39312 (207%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (measured in MB per second) that can be transferred over the external memory interface in a second. It's calculated by multiplying the card's bus width by its memory speed. If it uses DDR memory, it should be multiplied by 2 once again. If 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 high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be applied per second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics 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 most pixels that the graphics chip can possibly write 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 outputting the pixels (image) to the screen. The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.