Radeon HD 3470 256MB vs Radeon HD 6750

Intro

Compare all of that to the Radeon HD 6750, which uses a 40 nm design. AMD has clocked the core speed at 725 MHz. The GDDR5 RAM is set to run at a frequency of 1000 MHz on this specific card. It features 720 SPUs along with 36 TAUs and 16 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 6750 will be 111% quicker than the Radeon HD 3470 256MB overall, because of its greater bandwidth. (explain)

Radeon HD 6750		64000 MB/sec
Radeon HD 3470 256MB		30400 MB/sec
	Difference: 33600 (111%)

Texel Rate

The Radeon HD 6750 should be quite a bit (more or less 716%) faster with regards to AF than the Radeon HD 3470 256MB. (explain)

Radeon HD 6750		26100 Mtexels/sec
Radeon HD 3470 256MB		3200 Mtexels/sec
	Difference: 22900 (716%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 6750 is the winner, by far. (explain)

Radeon HD 6750		11600 Mpixels/sec
Radeon HD 3470 256MB		3200 Mpixels/sec
	Difference: 8400 (263%)

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 data (measured in megabytes per second) that can be transferred over the external memory interface in a second. It's worked out by multiplying the interface width by its memory speed. If it uses DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed in one second. This is calculated by multiplying the total number of texture units by the core speed of the chip. The better this number, 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 maximum amount of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the number of ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel 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 max fill rate.