GeForce 930M vs Radeon HD 3850 X2

Intro

Compare those specs to the Radeon HD 3850 X2, which has GPU clock speed of 668 MHz, and 512 MB of GDDR3 RAM set to run at 828 MHz through a 256-bit bus. It also is made up of 320(64x5) Stream Processors, 16 TAUs, and 16 Raster Operation Units.

Display Graphs

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Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 3850 X2 should theoretically perform a lot faster than the GeForce 930M overall. (explain)

Radeon HD 3850 X2		105984 MB/sec
GeForce 930M		14400 MB/sec
	Difference: 91584 (636%)

Texel Rate

The GeForce 930M is just a bit (about 4%) more effective at anisotropic filtering than the Radeon HD 3850 X2. (explain)

GeForce 930M		22272 Mtexels/sec
Radeon HD 3850 X2		21376 Mtexels/sec
	Difference: 896 (4%)

Pixel Rate

The Radeon HD 3850 X2 should be quite a bit (about 188%) better at FSAA than the GeForce 930M, and also will be able to handle higher resolutions better. (explain)

Radeon HD 3850 X2		21376 Mpixels/sec
GeForce 930M		7424 Mpixels/sec
	Difference: 13952 (188%)

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 largest amount of information (counted in MB per second) that can be transported across the external memory interface in one second. It's worked out by multiplying the card's bus width by the speed of its memory. If it uses DDR type memory, it must be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the better the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the maximum number of pixels the graphics card can possibly write to its local memory in a second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also sometimes called 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, 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.