GeForce GTX 660 Ti vs Radeon HD 6670 (OEM) 1GB

Intro

Compare all of that to the Radeon HD 6670 (OEM) 1GB, which uses a 40 nm design. AMD has clocked the core speed at 800 MHz. The GDDR5 RAM is set to run at a speed of 1000 MHz on this particular model. It features 480 SPUs along with 24 TAUs and 8 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM) 1GB		63 Watts
GeForce GTX 660 Ti		150 Watts
	Difference: 87 Watts (138%)

Memory Bandwidth

In theory, the GeForce GTX 660 Ti is 125% quicker than the Radeon HD 6670 (OEM) 1GB in general, due to its greater data rate. (explain)

GeForce GTX 660 Ti		144000 MB/sec
Radeon HD 6670 (OEM) 1GB		64000 MB/sec
	Difference: 80000 (125%)

Texel Rate

The GeForce GTX 660 Ti is a lot (more or less 434%) more effective at AF than the Radeon HD 6670 (OEM) 1GB. (explain)

GeForce GTX 660 Ti		102480 Mtexels/sec
Radeon HD 6670 (OEM) 1GB		19200 Mtexels/sec
	Difference: 83280 (434%)

Pixel Rate

The GeForce GTX 660 Ti is a lot (approximately 243%) faster with regards to anti-aliasing than the Radeon HD 6670 (OEM) 1GB, and should be able to handle higher screen resolutions without losing too much performance. (explain)

GeForce GTX 660 Ti		21960 Mpixels/sec
Radeon HD 6670 (OEM) 1GB		6400 Mpixels/sec
	Difference: 15560 (243%)

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 (in units of megabytes per second) that can be moved over the external memory interface within a second. The number is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, the faster 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 processed in one second. This number is calculated by multiplying the total number of texture units of the card by the core speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels 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. The figure is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.