Radeon HD 5830 vs Radeon R9 380X

Intro

Compare those specs to the Radeon R9 380X, which uses a 28 nm design. AMD has set the core frequency at 970 MHz. The GDDR5 memory runs at a speed of 1425 MHz on this particular card. It features 2048 SPUs along with 128 Texture Address Units and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon HD 5830		175 Watts
Radeon R9 380X		190 Watts
	Difference: 15 Watts (9%)

Memory Bandwidth

Theoretically speaking, the Radeon R9 380X will be 43% quicker than the Radeon HD 5830 in general, due to its higher data rate. (explain)

Radeon R9 380X		182400 MB/sec
Radeon HD 5830		128000 MB/sec
	Difference: 54400 (43%)

Texel Rate

The Radeon R9 380X will be quite a bit (about 177%) faster with regards to texture filtering than the Radeon HD 5830. (explain)

Radeon R9 380X		124160 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 79360 (177%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 380X is a better choice, and very much so. (explain)

Radeon R9 380X		31040 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 18240 (143%)

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 data (in units of megabytes per second) that can be transferred across the external memory interface in a second. It's calculated by multiplying the card's interface width by its memory speed. If the card has DDR type memory, the result should be multiplied by 2 again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and high resolutions.

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

Pixel Rate: Pixel rate is the maximum amount of pixels the graphics card could possibly write to the local memory in a second - measured in millions of pixels per second. The number is calculated by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output 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 maximum fill rate.