GeForce GTX 580 3GB vs Radeon HD 6670 (OEM)

Intro

Compare that to the Radeon HD 6670 (OEM), which has a core clock frequency of 800 MHz and a GDDR5 memory frequency of 1000 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It is made up of 480 SPUs, 24 Texture Address Units, and 8 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM)		63 Watts
GeForce GTX 580 3GB		244 Watts
	Difference: 181 Watts (287%)

Memory Bandwidth

In theory, the GeForce GTX 580 3GB should be quite a bit faster than the Radeon HD 6670 (OEM) in general. (explain)

GeForce GTX 580 3GB		192384 MB/sec
Radeon HD 6670 (OEM)		64000 MB/sec
	Difference: 128384 (201%)

Texel Rate

The GeForce GTX 580 3GB will be quite a bit (about 157%) more effective at anisotropic filtering than the Radeon HD 6670 (OEM). (explain)

GeForce GTX 580 3GB		49408 Mtexels/sec
Radeon HD 6670 (OEM)		19200 Mtexels/sec
	Difference: 30208 (157%)

Pixel Rate

The GeForce GTX 580 3GB is quite a bit (more or less 479%) faster with regards to AA than the Radeon HD 6670 (OEM), and able to handle higher resolutions without slowing down too much. (explain)

GeForce GTX 580 3GB		37056 Mpixels/sec
Radeon HD 6670 (OEM)		6400 Mpixels/sec
	Difference: 30656 (479%)

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 largest amount of information (counted in MB per second) that can be transferred over the external memory interface in a second. The number is worked out by multiplying the card's bus width by its memory speed. If it uses DDR RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The higher the bandwidth is, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card could possibly write 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 core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate also depends on lots of other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to reach the maximum fill rate.