Radeon HD 5830 vs Radeon R9 270

Intro

Compare all of that to the Radeon R9 270, which uses a 28 nm design. AMD has set the core frequency at 900 MHz. The GDDR5 memory works at a speed of 1400 MHz on this model. 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 R9 270		150 Watts
Radeon HD 5830		175 Watts
	Difference: 25 Watts (17%)

Memory Bandwidth

Performance-wise, the Radeon R9 270 should theoretically be quite a bit better than the Radeon HD 5830 in general. (explain)

Radeon R9 270		179200 MB/sec
Radeon HD 5830		128000 MB/sec
	Difference: 51200 (40%)

Texel Rate

The Radeon R9 270 is a lot (approximately 61%) better at texture filtering than the Radeon HD 5830. (explain)

Radeon R9 270		72000 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 27200 (61%)

Pixel Rate

If using high levels of AA is important to you, then the Radeon R9 270 is superior to the Radeon HD 5830, by far. (explain)

Radeon R9 270		28800 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 16000 (125%)

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 information (counted in megabytes per second) that can be transferred across the external memory interface in one second. It's calculated by multiplying the card's interface width by its memory clock speed. In the case of DDR type RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the bandwidth is, the better 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 applied in one second. This figure is worked out by multiplying the total texture units of the card by the core clock 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 a second.

Pixel Rate: Pixel rate is the maximum amount of pixels that the graphics chip can possibly record to the local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of colour ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to reach the maximum fill rate.