Radeon HD 5830 vs Radeon R9 M385X

Intro

Compare all that to the Radeon R9 M385X, which has a clock speed of 1100 MHz and a GDDR5 memory frequency of 1500 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It features 896 SPUs, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 5830, in theory, should be quite a bit faster than the Radeon R9 M385X in general. (explain)

Radeon HD 5830		128000 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 32000 (33%)

Texel Rate

The Radeon R9 M385X will be quite a bit (about 38%) better at texture filtering than the Radeon HD 5830. (explain)

Radeon R9 M385X		61600 Mtexels/sec
Radeon HD 5830		44800 Mtexels/sec
	Difference: 16800 (38%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 M385X is superior to the Radeon HD 5830, and very much so. (explain)

Radeon R9 M385X		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: Memory bandwidth is the largest amount of data (counted in megabytes per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the interface width by the speed of its memory. If the card has DDR RAM, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the faster 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 per second. This is calculated by multiplying the total texture units of the card by the core speed of the chip. The higher this number, the better the video card will be at handling 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 that the graphics card could possibly record to its local memory per second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the core clock speed. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the max fill rate.