Radeon HD 6770 1GB vs Radeon R9 M385X

Intro

Compare all of that to the Radeon R9 M385X, which features a GPU core clock speed of 1100 MHz, and 4096 MB of GDDR5 memory running at 1500 MHz through a 128-bit bus. It also is comprised of 896 SPUs, 56 TAUs, and 16 Raster Operation Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon R9 M385X should theoretically be quite a bit faster than the Radeon HD 6770 1GB overall. (explain)

Radeon R9 M385X		96000 MB/sec
Radeon HD 6770 1GB		67200 MB/sec
	Difference: 28800 (43%)

Texel Rate

The Radeon R9 M385X should be a lot (about 71%) better at AF than the Radeon HD 6770 1GB. (explain)

Radeon R9 M385X		61600 Mtexels/sec
Radeon HD 6770 1GB		36000 Mtexels/sec
	Difference: 25600 (71%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 M385X is a better choice, by far. (explain)

Radeon R9 M385X		17600 Mpixels/sec
Radeon HD 6770 1GB		14400 Mpixels/sec
	Difference: 3200 (22%)

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 data (measured in MB per second) that can be transported past the external memory interface in a second. It is calculated by multiplying the card's interface width by its memory clock speed. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. 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 amount of texture map elements (texels) that are applied per second. This number is worked out by multiplying the total amount of texture units by the core clock speed of the chip. The higher this number, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels in one second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip could possibly write to its local memory per second - measured in millions of pixels per second. The figure is calculated by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on many other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the potential to get to the maximum fill rate.