Radeon HD 5570 vs Radeon HD 6670 (OEM)

Intro

Compare those specifications to the Radeon HD 6670 (OEM), which features a clock frequency of 800 MHz and a GDDR5 memory frequency of 1000 MHz. It also uses a 128-bit bus, and uses a 40 nm design. It is made up of 480 SPUs, 24 Texture Address Units, and 8 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5570		43 Watts
Radeon HD 6670 (OEM)		63 Watts
	Difference: 20 Watts (47%)

Memory Bandwidth

Performance-wise, the Radeon HD 6670 (OEM) should in theory be a lot superior to the Radeon HD 5570 overall. (explain)

Radeon HD 6670 (OEM)		64000 MB/sec
Radeon HD 5570		28800 MB/sec
	Difference: 35200 (122%)

Texel Rate

The Radeon HD 6670 (OEM) will be a lot (approximately 48%) more effective at AF than the Radeon HD 5570. (explain)

Radeon HD 6670 (OEM)		19200 Mtexels/sec
Radeon HD 5570		13000 Mtexels/sec
	Difference: 6200 (48%)

Pixel Rate

The Radeon HD 6670 (OEM) will be quite a bit (about 23%) more effective at AA than the Radeon HD 5570, and also able to handle higher screen resolutions without losing too much performance. (explain)

Radeon HD 6670 (OEM)		6400 Mpixels/sec
Radeon HD 5570		5200 Mpixels/sec
	Difference: 1200 (23%)

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 information (counted in megabytes per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the bus width by the speed of its memory. If it uses DDR memory, it should be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better 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 applied per second. This number is calculated by multiplying the total texture units by the core speed of the chip. The better the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core 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 fill rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.