Radeon HD 6770 vs Radeon R9 M365X

Intro

Compare all of that to the Radeon R9 M365X, which has clock speeds of 925 MHz on the GPU, and 1125 MHz on the 4096 MB of GDDR5 memory. It features 640 SPUs as well as 40 Texture Address Units and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M365X should in theory perform a small bit faster than the Radeon HD 6770 in general. (explain)

Radeon R9 M365X		72000 MB/sec
Radeon HD 6770		67200 MB/sec
	Difference: 4800 (7%)

Texel Rate

The Radeon R9 M365X is just a bit (approximately 3%) better at anisotropic filtering than the Radeon HD 6770. (explain)

Radeon R9 M365X		37000 Mtexels/sec
Radeon HD 6770		36000 Mtexels/sec
	Difference: 1000 (3%)

Pixel Rate

If running with a high screen resolution is important to you, then the Radeon R9 M365X is superior to the Radeon HD 6770, though only just barely. (explain)

Radeon R9 M365X		14800 Mpixels/sec
Radeon HD 6770		14400 Mpixels/sec
	Difference: 400 (3%)

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 (counted in megabytes per second) that can be transported past the external memory interface in one second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR memory, it must be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum amount of texture map elements (texels) that can be processed per second. This figure is worked out by multiplying the total amount of texture units of the card by the core clock speed of the chip. The higher the texel rate, 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 most pixels the video card could possibly record to its local memory per second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Render Output Units by the the core speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on lots of other factors, most notably the memory bandwidth of the card - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.