GeForce GT 450 (OEM) vs Radeon R9 M290X

Intro

Compare those specs to the Radeon R9 M290X, which comes with GPU clock speed of 850 MHz, and 4096 MB of GDDR5 RAM running at 1200 MHz through a 256-bit bus. It also is comprised of 1280 SPUs, 80 Texture Address Units, and 32 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R9 M290X		100 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 6 Watts (6%)

Memory Bandwidth

Performance-wise, the Radeon R9 M290X should theoretically be much better than the GeForce GT 450 (OEM) overall. (explain)

Radeon R9 M290X		153600 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 57600 (60%)

Texel Rate

The Radeon R9 M290X will be a lot (approximately 259%) better at texture filtering than the GeForce GT 450 (OEM). (explain)

Radeon R9 M290X		68000 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 49040 (259%)

Pixel Rate

The Radeon R9 M290X will be quite a bit (about 43%) better at anti-aliasing than the GeForce GT 450 (OEM), and also able to handle higher resolutions without slowing down too much. (explain)

Radeon R9 M290X		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: Memory bandwidth is the max amount of information (measured in megabytes per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory speed. If the card has DDR memory, the result should be multiplied by 2 once 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 higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of colour ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to reach the max fill rate.