GeForce GT 240 GDDR5 vs Radeon HD 6450 (OEM)

Intro

Compare those specifications to the Radeon HD 6450 (OEM), which features a GPU core clock speed of 625 MHz, and 512 MB of GDDR3 memory running at 800 MHz through a 64-bit bus. It also is made up of 160 SPUs, 8 Texture Address Units, and 4 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6450 (OEM)		31 Watts
GeForce GT 240 GDDR5		70 Watts
	Difference: 39 Watts (126%)

Memory Bandwidth

In theory, the GeForce GT 240 GDDR5 is 325% quicker than the Radeon HD 6450 (OEM) overall, because of its higher data rate. (explain)

GeForce GT 240 GDDR5		54400 MB/sec
Radeon HD 6450 (OEM)		12800 MB/sec
	Difference: 41600 (325%)

Texel Rate

The GeForce GT 240 GDDR5 will be much (approximately 252%) more effective at anisotropic filtering than the Radeon HD 6450 (OEM). (explain)

GeForce GT 240 GDDR5		17600 Mtexels/sec
Radeon HD 6450 (OEM)		5000 Mtexels/sec
	Difference: 12600 (252%)

Pixel Rate

The GeForce GT 240 GDDR5 is a lot (approximately 76%) more effective at full screen anti-aliasing than the Radeon HD 6450 (OEM), and should be able to handle higher resolutions while still performing well. (explain)

GeForce GT 240 GDDR5		4400 Mpixels/sec
Radeon HD 6450 (OEM)		2500 Mpixels/sec
	Difference: 1900 (76%)

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 maximum amount of data (in units of MB per second) that can be transported past the external memory interface in a second. The number is worked out by multiplying the bus width by its memory clock speed. If it uses DDR type memory, the result should be multiplied by 2 again. If 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, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.