Radeon HD 6670 (OEM) vs Radeon HD 7850

Intro

Compare those specifications to the Radeon HD 7850, which features clock speeds of 860 MHz on the GPU, and 1200 MHz on the 2048 MB of GDDR5 RAM. It features 1024 SPUs along with 64 Texture Address Units and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon HD 7850		5200 points
Radeon HD 6670 (OEM)		1120 points
	Difference: 4080 (364%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 6670 (OEM)		63 Watts
Radeon HD 7850		130 Watts
	Difference: 67 Watts (106%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7850 will be 140% quicker than the Radeon HD 6670 (OEM) in general, due to its higher bandwidth. (explain)

Radeon HD 7850		153600 MB/sec
Radeon HD 6670 (OEM)		64000 MB/sec
	Difference: 89600 (140%)

Texel Rate

The Radeon HD 7850 is much (about 187%) better at texture filtering than the Radeon HD 6670 (OEM). (explain)

Radeon HD 7850		55040 Mtexels/sec
Radeon HD 6670 (OEM)		19200 Mtexels/sec
	Difference: 35840 (187%)

Pixel Rate

The Radeon HD 7850 will be much (approximately 330%) better at FSAA than the Radeon HD 6670 (OEM), and should be able to handle higher screen resolutions while still performing well. (explain)

Radeon HD 7850		27520 Mpixels/sec
Radeon HD 6670 (OEM)		6400 Mpixels/sec
	Difference: 21120 (330%)

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 largest amount of information (in units of megabytes per second) that can be moved over the external memory interface within a second. It is worked out by multiplying the interface width by its memory speed. If the card has DDR memory, it should be multiplied by 2 once again. If it uses 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 amount of texture map elements (texels) that can be processed in one second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The better this number, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed per second.

Pixel Rate: Pixel rate is the most pixels the video card could possibly write to its local memory per second - measured in millions of pixels per second. The number is calculated by multiplying the amount 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 outputting the pixels (image) to the screen. The actual pixel output rate also depends on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.