GeForce GT 450 (OEM) vs GeForce GTX 980

Intro

Compare all of that to the GeForce GTX 980, which makes use of a 28 nm design. nVidia has clocked the core speed at 1126 MHz. The GDDR5 RAM runs at a speed of 1750 MHz on this particular model. It features 2048 SPUs along with 128 Texture Address Units and 64 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
GeForce GTX 980		165 Watts
	Difference: 59 Watts (56%)

Memory Bandwidth

As far as performance goes, the GeForce GTX 980 should in theory be a lot superior to the GeForce GT 450 (OEM) in general. (explain)

GeForce GTX 980		224000 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 128000 (133%)

Texel Rate

The GeForce GTX 980 will be quite a bit (about 660%) faster with regards to AF than the GeForce GT 450 (OEM). (explain)

GeForce GTX 980		144128 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 125168 (660%)

Pixel Rate

The GeForce GTX 980 should be a lot (more or less 280%) faster with regards to FSAA than the GeForce GT 450 (OEM), and should be capable of handling higher resolutions without losing too much performance. (explain)

GeForce GTX 980		72064 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 53104 (280%)

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 past the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is calculated by multiplying the total texture units of the card by the core clock speed of the chip. The higher this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of Render Output Units 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 output rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.