Radeon HD 4350 vs Radeon HD 6770 1GB

Intro

Compare those specs to the Radeon HD 6770 1GB, which features a core clock frequency of 900 MHz and a GDDR5 memory speed of 1050 MHz. It also makes use of a 128-bit memory bus, and uses a 40 nm design. It is comprised of 800 SPUs, 40 Texture Address Units, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4350		22 Watts
Radeon HD 6770 1GB		108 Watts
	Difference: 86 Watts (391%)

Memory Bandwidth

The Radeon HD 6770 1GB should in theory be much faster than the Radeon HD 4350 overall. (explain)

Radeon HD 6770 1GB		67200 MB/sec
Radeon HD 4350		8000 MB/sec
	Difference: 59200 (740%)

Texel Rate

The Radeon HD 6770 1GB is quite a bit (approximately 683%) more effective at texture filtering than the Radeon HD 4350. (explain)

Radeon HD 6770 1GB		36000 Mtexels/sec
Radeon HD 4350		4600 Mtexels/sec
	Difference: 31400 (683%)

Pixel Rate

The Radeon HD 6770 1GB is much (approximately 526%) better at full screen anti-aliasing than the Radeon HD 4350, and should be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon HD 6770 1GB		14400 Mpixels/sec
Radeon HD 4350		2300 Mpixels/sec
	Difference: 12100 (526%)

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 megabytes per second) that can be transferred across the external memory interface within a second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the bandwidth is, 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 are applied in one second. This is worked out by multiplying the total number of texture units of the card 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 in one second.

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card could possibly write to its local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. 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 fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.