Radeon HD 3850 256MB vs Radeon R9 M365X

Intro

Compare that to the Radeon R9 M365X, which uses a 28 nm design. AMD has set the core frequency at 925 MHz. The GDDR5 RAM is set to run at a frequency of 1125 MHz on this card. It features 640 SPUs along with 40 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon R9 M365X should in theory be much better than the Radeon HD 3850 256MB overall. (explain)

Radeon R9 M365X		72000 MB/sec
Radeon HD 3850 256MB		52992 MB/sec
	Difference: 19008 (36%)

Texel Rate

The Radeon R9 M365X is much (approximately 246%) more effective at texture filtering than the Radeon HD 3850 256MB. (explain)

Radeon R9 M365X		37000 Mtexels/sec
Radeon HD 3850 256MB		10688 Mtexels/sec
	Difference: 26312 (246%)

Pixel Rate

The Radeon R9 M365X will be much (about 38%) faster with regards to AA than the Radeon HD 3850 256MB, and also should be capable of handling higher screen resolutions more effectively. (explain)

Radeon R9 M365X		14800 Mpixels/sec
Radeon HD 3850 256MB		10688 Mpixels/sec
	Difference: 4112 (38%)

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 largest amount of information (in units of MB per second) that can be transferred across the external memory interface in a second. It is calculated by multiplying the interface width by its memory clock speed. In the case of DDR memory, it must be multiplied by 2 once again. If DDR5, multiply by 4 instead. The better the card's memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels the video card can 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 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 is also dependant on quite a few other factors, most notably the memory bandwidth of the card - the lower the memory bandwidth is, the lower the potential to get to the max fill rate.