GeForce GT 450 (OEM) vs Radeon HD 6570 (OEM) 2GB

Intro

Compare those specifications to the Radeon HD 6570 (OEM) 2GB, which comes with GPU core speed of 650 MHz, and 1024 MB of GDDR5 memory running at 1000 MHz through a 128-bit bus. It also features 480 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6570 (OEM) 2GB		50 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 56 Watts (112%)

Memory Bandwidth

The GeForce GT 450 (OEM) should in theory be much faster than the Radeon HD 6570 (OEM) 2GB in general. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
Radeon HD 6570 (OEM) 2GB		64000 MB/sec
	Difference: 32000 (50%)

Texel Rate

The GeForce GT 450 (OEM) should be a lot (more or less 22%) more effective at anisotropic filtering than the Radeon HD 6570 (OEM) 2GB. (explain)

GeForce GT 450 (OEM)		18960 Mtexels/sec
Radeon HD 6570 (OEM) 2GB		15600 Mtexels/sec
	Difference: 3360 (22%)

Pixel Rate

If using a high screen resolution is important to you, then the GeForce GT 450 (OEM) is superior to the Radeon HD 6570 (OEM) 2GB, and very much so. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
Radeon HD 6570 (OEM) 2GB		5200 Mpixels/sec
	Difference: 13760 (265%)

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 MB per second) that can be transported past the external memory interface in one second. It's calculated by multiplying the card's interface width by the speed of its memory. In the case of DDR type RAM, the result should be multiplied by 2 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is calculated by multiplying the total amount of texture units by the core clock speed of the chip. The better this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in one 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. Pixel rate is worked out by multiplying the amount of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill 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 get to the maximum fill rate.