GeForce GT 450 (OEM) vs Radeon HD 3850 512MB

Intro

Compare those specs to the Radeon HD 3850 512MB, which has GPU core speed of 668 MHz, and 512 MB of GDDR3 memory running at 828 MHz through a 256-bit bus. It also is made up of 320(64x5) Stream Processors, 16 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3850 512MB		75 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 31 Watts (41%)

Memory Bandwidth

As far as performance goes, the GeForce GT 450 (OEM) should theoretically be much better than the Radeon HD 3850 512MB in general. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
Radeon HD 3850 512MB		52992 MB/sec
	Difference: 43008 (81%)

Texel Rate

The GeForce GT 450 (OEM) will be a lot (more or less 77%) better at AF than the Radeon HD 3850 512MB. (explain)

GeForce GT 450 (OEM)		18960 Mtexels/sec
Radeon HD 3850 512MB		10688 Mtexels/sec
	Difference: 8272 (77%)

Pixel Rate

If running with a high screen resolution is important to you, then the GeForce GT 450 (OEM) is superior to the Radeon HD 3850 512MB, by a large margin. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
Radeon HD 3850 512MB		10688 Mpixels/sec
	Difference: 8272 (77%)

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 (in units of MB per second) that can be transported over the external memory interface in a second. It is calculated by multiplying the bus width by the speed of its memory. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed 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 one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.