Radeon HD 4350 vs Radeon HD 6790

Intro

Compare those specs to the Radeon HD 6790, which features core clock speeds of 840 MHz on the GPU, and 1050 MHz on the 1024 MB of GDDR5 memory. It features 800 SPUs along with 40 TAUs and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 4350		22 Watts
Radeon HD 6790		150 Watts
	Difference: 128 Watts (582%)

Memory Bandwidth

In theory, the Radeon HD 6790 will be 1580% faster than the Radeon HD 4350 in general, due to its higher bandwidth. (explain)

Radeon HD 6790		134400 MB/sec
Radeon HD 4350		8000 MB/sec
	Difference: 126400 (1580%)

Texel Rate

The Radeon HD 6790 will be a lot (more or less 630%) faster with regards to texture filtering than the Radeon HD 4350. (explain)

Radeon HD 6790		33600 Mtexels/sec
Radeon HD 4350		4600 Mtexels/sec
	Difference: 29000 (630%)

Pixel Rate

If running with a high resolution is important to you, then the Radeon HD 6790 is a better choice, by far. (explain)

Radeon HD 6790		13440 Mpixels/sec
Radeon HD 4350		2300 Mpixels/sec
	Difference: 11140 (484%)

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 information (in units of megabytes per second) that can be transferred over the external memory interface in one second. The number is calculated by multiplying the card's interface 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 better the memory bandwidth, the faster the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that can be processed in one second. This number 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 processed per second.

Pixel Rate: Pixel rate is the most pixels the video card can possibly record to its local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.