Radeon HD 5830 vs Radeon R7 260X

Intro

Compare all of that to the Radeon R7 260X, which comes with clock speeds of 1100 MHz on the GPU, and 1625 MHz on the 2048 MB of GDDR5 RAM. It features 896 SPUs along with 56 Texture Address Units and 16 Rasterization Operator Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

Radeon R7 260X		115 Watts
Radeon HD 5830		175 Watts
	Difference: 60 Watts (52%)

Memory Bandwidth

Theoretically speaking, the Radeon HD 5830 should be 23% quicker than the Radeon R7 260X overall, because of its higher bandwidth. (explain)

Radeon HD 5830		128000 MB/sec
Radeon R7 260X		104000 MB/sec
	Difference: 24000 (23%)

Texel Rate

The Radeon R7 260X will be a lot (approximately 38%) better at texture filtering than the Radeon HD 5830. (explain)

Radeon R7 260X		61600 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 16800 (38%)

Pixel Rate

The Radeon R7 260X should be a lot (more or less 38%) faster with regards to anti-aliasing than the Radeon HD 5830, and capable of handling higher screen resolutions while still performing well. (explain)

Radeon R7 260X		17600 Mpixels/sec
Radeon HD 5830		12800 Mpixels/sec
	Difference: 4800 (38%)

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 (measured in MB per second) that can be transported across the external memory interface in one second. The number is worked out by multiplying the bus width by its memory clock speed. In the case of DDR memory, it should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the 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 can be processed in one second. This is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better the texel rate, the better the graphics card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the most pixels the graphics card could 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 Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the maximum fill rate.