GeForce GTX 275 vs Radeon HD 6670 (OEM)

Intro

Compare those specifications to the Radeon HD 6670 (OEM), which features a GPU core clock speed of 800 MHz, and 512 MB of GDDR5 memory running at 1000 MHz through a 128-bit bus. It also is comprised of 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 6670 (OEM)		63 Watts
GeForce GTX 275		219 Watts
	Difference: 156 Watts (248%)

Memory Bandwidth

Performance-wise, the GeForce GTX 275 should theoretically be quite a bit better than the Radeon HD 6670 (OEM) in general. (explain)

GeForce GTX 275		127008 MB/sec
Radeon HD 6670 (OEM)		64000 MB/sec
	Difference: 63008 (98%)

Texel Rate

The GeForce GTX 275 is a lot (approximately 164%) faster with regards to anisotropic filtering than the Radeon HD 6670 (OEM). (explain)

GeForce GTX 275		50640 Mtexels/sec
Radeon HD 6670 (OEM)		19200 Mtexels/sec
	Difference: 31440 (164%)

Pixel Rate

The GeForce GTX 275 is much (approximately 177%) more effective at FSAA than the Radeon HD 6670 (OEM), and also capable of handling higher screen resolutions better. (explain)

GeForce GTX 275		17724 Mpixels/sec
Radeon HD 6670 (OEM)		6400 Mpixels/sec
	Difference: 11324 (177%)

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 data (measured in MB per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR type memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The higher the memory bandwidth, the better the card will be in general. It especially helps with AA, 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 texture units of the card by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card can possibly record to the local memory per second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the max fill rate.