Radeon HD 4350 vs Radeon HD 5670

Intro

Compare those specs to the Radeon HD 5670, which has a GPU core clock speed of 775 MHz, and 1024 MB of GDDR5 RAM set to run at 1000 MHz through a 128-bit bus. It also is comprised of 400(80x5) Stream Processors, 20 Texture Address Units, and 8 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 5670		61 Watts
	Difference: 39 Watts (177%)

Memory Bandwidth

In theory, the Radeon HD 5670 should be 700% quicker than the Radeon HD 4350 in general, because of its greater data rate. (explain)

Radeon HD 5670		64000 MB/sec
Radeon HD 4350		8000 MB/sec
	Difference: 56000 (700%)

Texel Rate

The Radeon HD 5670 will be quite a bit (about 237%) more effective at anisotropic filtering than the Radeon HD 4350. (explain)

Radeon HD 5670		15500 Mtexels/sec
Radeon HD 4350		4600 Mtexels/sec
	Difference: 10900 (237%)

Pixel Rate

The Radeon HD 5670 is a lot (approximately 170%) faster with regards to anti-aliasing than the Radeon HD 4350, and will be able to handle higher resolutions better. (explain)

Radeon HD 5670		6200 Mpixels/sec
Radeon HD 4350		2300 Mpixels/sec
	Difference: 3900 (170%)

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 max amount of information (in units of megabytes per second) that can be transferred across the external memory interface in one second. The number is worked out by multiplying the card's bus width by its memory clock speed. If the card has DDR memory, the result should 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, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be applied per second. This is worked out by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card can possibly write to the local memory in a second - measured in millions of pixels per second. The number is worked out by multiplying the number of colour ROPs by the clock speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel output rate also depends on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.