Radeon HD 6750 1GB vs Radeon R9 M385X

Intro

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

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically, the Radeon R9 M385X should perform quite a bit faster than the Radeon HD 6750 1GB in general. (explain)

Radeon R9 M385X		96000 MB/sec
Radeon HD 6750 1GB		64000 MB/sec
	Difference: 32000 (50%)

Texel Rate

The Radeon R9 M385X should be quite a bit (approximately 136%) better at AF than the Radeon HD 6750 1GB. (explain)

Radeon R9 M385X		61600 Mtexels/sec
Radeon HD 6750 1GB		26100 Mtexels/sec
	Difference: 35500 (136%)

Pixel Rate

The Radeon R9 M385X will be much (more or less 52%) more effective at AA than the Radeon HD 6750 1GB, and also able to handle higher resolutions while still performing well. (explain)

Radeon R9 M385X		17600 Mpixels/sec
Radeon HD 6750 1GB		11600 Mpixels/sec
	Difference: 6000 (52%)

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 maximum amount of information (in units of megabytes per second) that can be moved past the external memory interface in one second. It is worked out by multiplying the card's interface width by the speed of its memory. If it uses DDR type RAM, it must be multiplied by 2 once again. If 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 higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the video card can possibly record to the local memory in one second - measured in millions of pixels per second. Pixel rate is calculated by multiplying the amount of ROPs 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 lots of other factors, especially the memory bandwidth of the card - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.