Radeon HD 3850 X2 vs Radeon R9 M395X

Intro

Compare those specs to the Radeon R9 M395X, which uses a 28 nm design. AMD has set the core speed at 723 MHz. The GDDR5 memory runs at a speed of 1250 MHz on this specific card. It features 2048 SPUs as well as 128 TAUs and 32 Rasterization Operator Units.

Display Graphs

Hide Graphs

Power Usage and Theoretical Benchmarks

Memory Bandwidth

Performance-wise, the Radeon R9 M395X should theoretically be quite a bit superior to the Radeon HD 3850 X2 in general. (explain)

Radeon R9 M395X		160000 MB/sec
Radeon HD 3850 X2		105984 MB/sec
	Difference: 54016 (51%)

Texel Rate

The Radeon R9 M395X is quite a bit (about 333%) more effective at texture filtering than the Radeon HD 3850 X2. (explain)

Radeon R9 M395X		92544 Mtexels/sec
Radeon HD 3850 X2		21376 Mtexels/sec
	Difference: 71168 (333%)

Pixel Rate

If using a high resolution is important to you, then the Radeon R9 M395X is superior to the Radeon HD 3850 X2, but not by far. (explain)

Radeon R9 M395X		23136 Mpixels/sec
Radeon HD 3850 X2		21376 Mpixels/sec
	Difference: 1760 (8%)

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.

One or more cards in this comparison are multi-core. This means that their bandwidth, texel and pixel rates are theoretically doubled - this does not mean the card will actually perform twice as fast, but only that it should in theory be able to. Actual game benchmarks will give a more accurate idea of what it's capable of.

Price Comparison

Specifications

Memory Bandwidth: Bandwidth is the largest amount of data (measured in megabytes per second) that can be moved across the external memory interface in a second. The number is calculated by multiplying the bus width by the speed of its memory. If the card has DDR type memory, it must be multiplied by 2 again. If 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 high resolutions.

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