Radeon HD 3650 vs Radeon R9 M385X

Intro

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

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon R9 M385X should theoretically be quite a bit better than the Radeon HD 3650 in general. (explain)

Radeon R9 M385X		96000 MB/sec
Radeon HD 3650		25600 MB/sec
	Difference: 70400 (275%)

Texel Rate

The Radeon R9 M385X is much (about 962%) faster with regards to AF than the Radeon HD 3650. (explain)

Radeon R9 M385X		61600 Mtexels/sec
Radeon HD 3650		5800 Mtexels/sec
	Difference: 55800 (962%)

Pixel Rate

If using lots of anti-aliasing is important to you, then the Radeon R9 M385X is the winner, by a large margin. (explain)

Radeon R9 M385X		17600 Mpixels/sec
Radeon HD 3650		2900 Mpixels/sec
	Difference: 14700 (507%)

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 (in units of MB per second) that can be transferred past the external memory interface within a second. It's calculated by multiplying the interface width by its memory speed. In the case of DDR RAM, it must be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher 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 texture map elements (texels) that are processed in one second. This is worked out by multiplying the total number of texture units by the core speed of the chip. The better the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied in a second.

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