GeForce GT 450 (OEM) vs Radeon HD 5570

Intro

Compare those specifications to the Radeon HD 5570, which has a GPU core clock speed of 650 MHz, and 512 MB of DDR3 RAM running at 900 MHz through a 128-bit bus. It also features 400(80x5) Stream Processors, 20 TAUs, and 8 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
GeForce GT 450 (OEM)		106 Watts
	Difference: 63 Watts (147%)

Memory Bandwidth

In theory, the GeForce GT 450 (OEM) should be a lot faster than the Radeon HD 5570 overall. (explain)

GeForce GT 450 (OEM)		96000 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 67200 (233%)

Texel Rate

The GeForce GT 450 (OEM) will be a lot (about 46%) faster with regards to AF than the Radeon HD 5570. (explain)

GeForce GT 450 (OEM)		18960 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 5960 (46%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the GeForce GT 450 (OEM) is a better choice, by a large margin. (explain)

GeForce GT 450 (OEM)		18960 Mpixels/sec
Radeon HD 5570		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: Bandwidth is the largest amount of data (counted in megabytes per second) that can be transported over the external memory interface in one second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR type memory, it must be multiplied by 2 again. If it uses 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 can be applied in one second. This number is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly record to its local memory in one second - measured in millions of pixels per second. The number is worked out by multiplying the number 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 output rate also depends on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.