Radeon HD 4350 vs Radeon HD 7870

Intro

Compare all that to the Radeon HD 7870, which has core speeds of 1000 MHz on the GPU, and 1200 MHz on the 2048 MB of GDDR5 RAM. 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

Performance-wise, the Radeon HD 7870 should in theory be quite a bit better than the Radeon HD 4350 in general. (explain)

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

Texel Rate

The Radeon HD 7870 is a lot (approximately 1639%) more effective at texture filtering than the Radeon HD 4350. (explain)

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

Pixel Rate

The Radeon HD 7870 should be a lot (approximately 1291%) faster with regards to full screen anti-aliasing than the Radeon HD 4350, and should be capable of handling higher resolutions better. (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: Memory bandwidth is the maximum amount of data (measured in MB per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the interface width by the speed of its memory. If it uses DDR RAM, the result should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be applied per second. This figure is calculated by multiplying the total texture units by the core clock speed of the chip. The higher the texel rate, the better the video 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 video card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of Raster Operations Pipelines 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 output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.