Radeon HD 3470 512MB vs Radeon HD 6750

Intro

Compare all of that to the Radeon HD 6750, which comes with a clock frequency of 725 MHz and a GDDR5 memory speed of 1000 MHz. It also makes use of a 128-bit bus, and uses a 40 nm design. It features 720 SPUs, 36 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Radeon HD 6750 should be much faster than the Radeon HD 3470 512MB overall. (explain)

Radeon HD 6750		64000 MB/sec
Radeon HD 3470 512MB		30400 MB/sec
	Difference: 33600 (111%)

Texel Rate

The Radeon HD 6750 will be a lot (about 716%) faster with regards to AF than the Radeon HD 3470 512MB. (explain)

Radeon HD 6750		26100 Mtexels/sec
Radeon HD 3470 512MB		3200 Mtexels/sec
	Difference: 22900 (716%)

Pixel Rate

The Radeon HD 6750 will be quite a bit (about 263%) better at AA than the Radeon HD 3470 512MB, and capable of handling higher screen resolutions without losing too much performance. (explain)

Radeon HD 6750		11600 Mpixels/sec
Radeon HD 3470 512MB		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: Memory bandwidth is the max amount of information (measured in MB per second) that can be moved across the external memory interface within a second. It's worked out by multiplying the bus width by the speed of its memory. If the card has DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's 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 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 clock 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 per second.

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly write to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number 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 drawing the pixels (image) on the screen. The actual pixel fill rate is also dependant 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.