Nvidia Titan X vs Radeon HD 3850 X2

Intro

Compare those specs to the Radeon HD 3850 X2, which uses a 55 nm design. AMD has clocked the core frequency at 668 MHz. The GDDR3 RAM works at a frequency of 828 MHz on this particular card. It features 320(64x5) SPUs as well as 16 TAUs and 16 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

Theoretically speaking, the Nvidia Titan X is 364% quicker than the Radeon HD 3850 X2 overall, due to its greater bandwidth. (explain)

Nvidia Titan X		491520 MB/sec
Radeon HD 3850 X2		105984 MB/sec
	Difference: 385536 (364%)

Texel Rate

The Nvidia Titan X will be a lot (approximately 1385%) faster with regards to texture filtering than the Radeon HD 3850 X2. (explain)

Nvidia Titan X		317408 Mtexels/sec
Radeon HD 3850 X2		21376 Mtexels/sec
	Difference: 296032 (1385%)

Pixel Rate

If using a high screen resolution is important to you, then the Nvidia Titan X is a better choice, by far. (explain)

Nvidia Titan X		136032 Mpixels/sec
Radeon HD 3850 X2		21376 Mpixels/sec
	Difference: 114656 (536%)

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 maximum amount of data (measured in MB per second) that can be transferred past the external memory interface in one second. It's calculated by multiplying the interface width by its memory clock speed. In the case of DDR type memory, the result should be multiplied by 2 once again. If DDR5, multiply by ANOTHER 2x. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, High Dynamic Range and high resolutions.

Texel Rate: Texel rate is the maximum amount 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 speed of the chip. The higher this number, the better the card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels processed in a second.

Pixel Rate: Pixel rate is the maximum number of pixels that the graphics chip can possibly write to the local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of colour ROPs by the the core clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for drawing the pixels (image) on the screen. The actual pixel rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.