GeForce GT 450 (OEM) vs Radeon R9 280X

Intro

Compare those specifications to the Radeon R9 280X, which comes with core speeds of 850 MHz on the GPU, and 1500 MHz on the 3072 MB of GDDR5 RAM. It features 2048 SPUs along with 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

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

Memory Bandwidth

In theory, the Radeon R9 280X is 200% faster than the GeForce GT 450 (OEM) overall, because of its greater data rate. (explain)

Radeon R9 280X		288000 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 192000 (200%)

Texel Rate

The Radeon R9 280X will be much (more or less 474%) faster with regards to AF than the GeForce GT 450 (OEM). (explain)

Radeon R9 280X		108800 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 89840 (474%)

Pixel Rate

The Radeon R9 280X should be much (more or less 43%) more effective at full screen anti-aliasing than the GeForce GT 450 (OEM), and will be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon R9 280X		27200 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 8240 (43%)

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 largest amount of data (measured in megabytes per second) that can be transported over the external memory interface within a second. It's calculated by multiplying the card's bus width by its memory speed. If it uses DDR type memory, it must be multiplied by 2 once 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 high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.