Radeon HD 3650 vs Radeon HD 6750 1GB

Intro

Compare all that to the Radeon HD 6750 1GB, which makes use of a 40 nm design. AMD has set the core speed at 725 MHz. The GDDR5 memory works at a speed of 1000 MHz on this card. It features 720 SPUs along with 36 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 3650		78 Watts
Radeon HD 6750 1GB		86 Watts
	Difference: 8 Watts (10%)

Memory Bandwidth

The Radeon HD 6750 1GB, in theory, should be a lot faster than the Radeon HD 3650 in general. (explain)

Radeon HD 6750 1GB		64000 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 38400 (150%)

Texel Rate

The Radeon HD 6750 1GB should be a lot (approximately 350%) more effective at AF than the Radeon HD 3650. (explain)

Radeon HD 6750 1GB		26100 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 20300 (350%)

Pixel Rate

The Radeon HD 6750 1GB will be quite a bit (more or less 300%) faster with regards to full screen anti-aliasing than the Radeon HD 3650, and also should be capable of handling higher resolutions more effectively. (explain)

Radeon HD 6750 1GB		11600 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 8700 (300%)

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 maximum amount of data (in units of megabytes per second) that can be transported across the external memory interface within a second. It is calculated by multiplying the interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The higher 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 amount of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total number of texture units by the core speed of the chip. The higher this number, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called 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 bandwidth is, the lower the potential to get to the max fill rate.