GeForce GT 240 GDDR5 vs Radeon HD 6670 (OEM) 1GB

Intro

Compare those specs to the Radeon HD 6670 (OEM) 1GB, which has a GPU core clock speed of 800 MHz, and 1024 MB of GDDR5 memory set to run at 1000 MHz through a 128-bit bus. It also features 480 Stream Processors, 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 6670 (OEM) 1GB		63 Watts
GeForce GT 240 GDDR5		70 Watts
	Difference: 7 Watts (11%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 6670 (OEM) 1GB should perform a small bit faster than the GeForce GT 240 GDDR5 overall. (explain)

Radeon HD 6670 (OEM) 1GB		64000 MB/sec
GeForce GT 240 GDDR5		54400 MB/sec
	Difference: 9600 (18%)

Texel Rate

The Radeon HD 6670 (OEM) 1GB is a bit (approximately 9%) better at texture filtering than the GeForce GT 240 GDDR5. (explain)

Radeon HD 6670 (OEM) 1GB		19200 Mtexels/sec
GeForce GT 240 GDDR5		17600 Mtexels/sec
	Difference: 1600 (9%)

Pixel Rate

The Radeon HD 6670 (OEM) 1GB should be a lot (more or less 45%) better at anti-aliasing than the GeForce GT 240 GDDR5, and should be able to handle higher resolutions without slowing down too much. (explain)

Radeon HD 6670 (OEM) 1GB		6400 Mpixels/sec
GeForce GT 240 GDDR5		4400 Mpixels/sec
	Difference: 2000 (45%)

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 maximum amount of data (counted in MB per second) that can be transferred across the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the graphics card could possibly record to the local memory per second - measured in millions of pixels per second. The number is worked out by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.