Radeon HD 3850 X2 vs Radeon R7 370 2G

Intro

Compare all that to the Radeon R7 370 2G, which comes with a GPU core clock speed of 975 MHz, and 2048 MB of GDDR5 RAM set to run at 1400 MHz through a 256-bit bus. It also features 1024 SPUs, 64 TAUs, and 32 ROPs.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R7 370 2G should perform quite a bit faster than the Radeon HD 3850 X2 in general. (explain)

Radeon R7 370 2G		179200 MB/sec
Radeon HD 3850 X2		105984 MB/sec
	Difference: 73216 (69%)

Texel Rate

The Radeon R7 370 2G is a lot (about 192%) better at AF than the Radeon HD 3850 X2. (explain)

Radeon R7 370 2G		62400 Mtexels/sec
Radeon HD 3850 X2		21376 Mtexels/sec
	Difference: 41024 (192%)

Pixel Rate

The Radeon R7 370 2G will be much (approximately 46%) more effective at full screen anti-aliasing than the Radeon HD 3850 X2, and should be able to handle higher screen resolutions without slowing down too much. (explain)

Radeon R7 370 2G		31200 Mpixels/sec
Radeon HD 3850 X2		21376 Mpixels/sec
	Difference: 9824 (46%)

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: Memory bandwidth is the max amount of data (measured in MB per second) that can be moved past the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. In the case of DDR memory, the result should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the memory bandwidth, the better the card will be in general. It especially helps with anti-aliasing, HDR and high resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are processed per second. This figure is worked out by multiplying the total amount of texture units of the card 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 in a second.

Pixel Rate: Pixel rate is the maximum amount of pixels the video card can possibly write to the local memory in one second - measured in millions of pixels per second. The figure is calculated by multiplying the number of Render Output Units by the clock speed of the card. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel fill rate is also dependant on many other factors, especially the memory bandwidth - the lower the memory bandwidth is, the lower the ability to get to the max fill rate.