Radeon HD 7950 vs Radeon R9 M385X

Intro

Compare all of that to the Radeon R9 M385X, which makes use of a 28 nm design. AMD has set the core frequency at 1100 MHz. The GDDR5 RAM runs at a speed of 1500 MHz on this particular model. It features 896 SPUs along with 56 Texture Address Units and 16 ROPs.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon HD 7950 should be much faster than the Radeon R9 M385X overall. (explain)

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

Texel Rate

The Radeon HD 7950 is a lot (approximately 45%) faster with regards to texture 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 superior to the Radeon R9 M385X, 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: Memory bandwidth is the largest amount of information (in units of megabytes per second) that can be transferred past the external memory interface in a second. It's calculated by multiplying the interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If it uses DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that can be processed per second. This number is calculated by multiplying the total number of texture units by the core clock speed of the chip. The better this number, the better the video card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics card could possibly write to the local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of Raster Operations Pipelines by the clock speed of the card. ROPs (Raster Operations Pipelines - also sometimes called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate also depends on many other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to reach the maximum fill rate.