GeForce GT 450 (OEM) vs Radeon R9 285

Intro

Compare those specs to the Radeon R9 285, which has clock speeds of 918 MHz on the GPU, and 1375 MHz on the 2048 MB of GDDR5 RAM. It features 1792 SPUs along with 112 Texture Address Units and 32 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
Radeon R9 285		190 Watts
	Difference: 84 Watts (79%)

Memory Bandwidth

The Radeon R9 285 should theoretically be a lot faster than the GeForce GT 450 (OEM) overall. (explain)

Radeon R9 285		176000 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 80000 (83%)

Texel Rate

The Radeon R9 285 should be a lot (approximately 442%) better at texture filtering than the GeForce GT 450 (OEM). (explain)

Radeon R9 285		102816 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 83856 (442%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 285 is superior to the GeForce GT 450 (OEM), by a large margin. (explain)

Radeon R9 285		29376 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 10416 (55%)

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 (counted in megabytes per second) that can be moved over the external memory interface in one second. It is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.