Radeon HD 4350 vs Radeon HD 7870

Intro

Compare those specs to the Radeon HD 7870, which makes use of a 28 nm design. AMD has set the core frequency at 1000 MHz. The GDDR5 RAM works at a speed of 1200 MHz on this particular card. It features 1280 SPUs as well as 80 TAUs and 32 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 7870		175 Watts
	Difference: 153 Watts (695%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 7870 is 1820% quicker than the Radeon HD 4350 overall, because of its higher bandwidth. (explain)

Radeon HD 7870		153600 MB/sec
Radeon HD 4350		8000 MB/sec
	Difference: 145600 (1820%)

Texel Rate

The Radeon HD 7870 is much (more or less 1639%) faster with regards to anisotropic filtering than the Radeon HD 4350. (explain)

Radeon HD 7870		80000 Mtexels/sec
Radeon HD 4350		4600 Mtexels/sec
	Difference: 75400 (1639%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 7870 is the winner, by far. (explain)

Radeon HD 7870		32000 Mpixels/sec
Radeon HD 4350		2300 Mpixels/sec
	Difference: 29700 (1291%)

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 transported past the external memory interface within a second. It's worked out by multiplying the interface width by its memory clock speed. In the case of DDR RAM, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are processed in one second. This number is calculated 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 video card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core 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 quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.