GeForce GT 450 (OEM) vs Radeon R9 270

Intro

Compare all of that to the Radeon R9 270, which makes use of a 28 nm design. AMD has set the core speed at 900 MHz. The GDDR5 memory runs at a speed of 1400 MHz on this particular model. It features 1280 SPUs along with 80 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 270		150 Watts
	Difference: 44 Watts (42%)

Memory Bandwidth

The Radeon R9 270 should in theory be a lot faster than the GeForce GT 450 (OEM) overall. (explain)

Radeon R9 270		179200 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 83200 (87%)

Texel Rate

The Radeon R9 270 will be much (approximately 280%) more effective at texture filtering than the GeForce GT 450 (OEM). (explain)

Radeon R9 270		72000 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 53040 (280%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon R9 270 is superior to the GeForce GT 450 (OEM), by a large margin. (explain)

Radeon R9 270		28800 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 9840 (52%)

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 max amount of information (counted in MB per second) that can be transferred past the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The higher the bandwidth is, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to its local memory in a second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the max fill rate.