GeForce GT 450 (OEM) vs Radeon R9 270X

Intro

Compare those specifications to the Radeon R9 270X, which has GPU clock speed of 1000 MHz, and 2048 MB of GDDR5 memory set to run at 1400 MHz through a 256-bit bus. It also is made up of 1280 Stream Processors, 80 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GT 450 (OEM)		106 Watts
Radeon R9 270X		180 Watts
	Difference: 74 Watts (70%)

Memory Bandwidth

In theory, the Radeon R9 270X should be 87% quicker than the GeForce GT 450 (OEM) in general, due to its greater data rate. (explain)

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

Texel Rate

The Radeon R9 270X is a lot (approximately 322%) better at texture filtering than the GeForce GT 450 (OEM). (explain)

Radeon R9 270X		80000 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 61040 (322%)

Pixel Rate

The Radeon R9 270X will be quite a bit (about 69%) better at FSAA than the GeForce GT 450 (OEM), and also capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon R9 270X		32000 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 13040 (69%)

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 max amount of information (counted in MB per second) that can be moved over the external memory interface within a second. It's calculated by multiplying the bus width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that are applied in one 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 better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.