Radeon HD 7950 vs Radeon R9 M385X

Intro

Compare that to the Radeon R9 M385X, which features a core clock speed of 1100 MHz and a GDDR5 memory speed of 1500 MHz. It also makes use of a 128-bit memory bus, and uses a 28 nm design. It is made up of 896 SPUs, 56 Texture Address Units, and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon HD 7950 should theoretically be much superior to the Radeon R9 M385X in general. (explain)

Radeon HD 7950		240000 MB/sec
Radeon R9 M385X		96000 MB/sec
	Difference: 144000 (150%)

Texel Rate

The Radeon HD 7950 should be a lot (about 45%) better at anisotropic filtering than the Radeon R9 M385X. (explain)

Radeon HD 7950		89600 Mtexels/sec
Radeon R9 M385X		61600 Mtexels/sec
	Difference: 28000 (45%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 7950 is the winner, by a large margin. (explain)

Radeon HD 7950		25600 Mpixels/sec
Radeon R9 M385X		17600 Mpixels/sec
	Difference: 8000 (45%)

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 max amount of data (counted in megabytes per second) that can be transported past the external memory interface in a second. It's worked out by multiplying the card's bus width by its memory clock speed. If it uses DDR type memory, it must be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, 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 per second. This figure is calculated by multiplying the total amount of texture units of the card by the core clock speed of the chip. The better this number, the better the 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 most pixels the graphics card can possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the core speed of the card. ROPs (Raster Operations Pipelines - sometimes also referred to as Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate also depends on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the max fill rate.