GeForce GT 450 (OEM) vs Radeon HD 3850 X2

Intro

Compare those specs to the Radeon HD 3850 X2, which comes with core speeds of 668 MHz on the GPU, and 828 MHz on the 512 MB of GDDR3 memory. It features 320(64x5) SPUs as well as 16 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 3850 X2 should in theory perform a little bit faster than the GeForce GT 450 (OEM) in general. (explain)

Radeon HD 3850 X2		105984 MB/sec
GeForce GT 450 (OEM)		96000 MB/sec
	Difference: 9984 (10%)

Texel Rate

The Radeon HD 3850 X2 will be a small bit (approximately 13%) faster with regards to texture filtering than the GeForce GT 450 (OEM). (explain)

Radeon HD 3850 X2		21376 Mtexels/sec
GeForce GT 450 (OEM)		18960 Mtexels/sec
	Difference: 2416 (13%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 3850 X2 is superior to the GeForce GT 450 (OEM), though not by far. (explain)

Radeon HD 3850 X2		21376 Mpixels/sec
GeForce GT 450 (OEM)		18960 Mpixels/sec
	Difference: 2416 (13%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Memory bandwidth is the largest amount of data (counted in MB per second) that can be moved across the external memory interface within a second. It is calculated by multiplying the interface width by the speed of its memory. If the card has DDR memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster 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 texture map elements (texels) that are processed in one second. This figure is calculated by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

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