GeForce GT 450 (OEM) vs Radeon R9 280

Intro

Compare all of that to the Radeon R9 280, which comes with core speeds of 933 MHz on the GPU, and 1250 MHz on the 3072 MB of GDDR5 memory. It features 1792 SPUs along with 112 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
Radeon R9 280		250 Watts
	Difference: 144 Watts (136%)

Memory Bandwidth

Performance-wise, the Radeon R9 280 should in theory be much superior to the GeForce GT 450 (OEM) overall. (explain)

Radeon R9 280		240000 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 144000 (150%)

Texel Rate

The Radeon R9 280 is much (about 451%) faster with regards to anisotropic filtering than the GeForce GT 450 (OEM). (explain)

Radeon R9 280		104496 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 85536 (451%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 280 is superior to the GeForce GT 450 (OEM), by far. (explain)

Radeon R9 280		29856 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 10896 (57%)

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 maximum amount of information (in units of megabytes per second) that can be transferred past the external memory interface in a second. It is worked out by multiplying the interface width by the speed of its memory. If it uses DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, 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 texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total texture units by the core speed of the chip. The higher this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Raster Operations Pipelines by the clock 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 lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.