GeForce 920M vs Radeon R9 270X

Intro

Compare those specs to the Radeon R9 270X, which uses a 28 nm design. AMD has set the core speed at 1000 MHz. The GDDR5 RAM is set to run at a frequency of 1400 MHz on this particular model. It features 1280 SPUs along with 80 TAUs and 32 ROPs.

Display Graphs

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Benchmarks

These are real-world performance benchmarks that were submitted by Hardware Compare users. The scores seen here are the average of all benchmarks submitted for each respective test and hardware.

3DMark Fire Strike Graphics Score

Radeon R9 270X		6590 points
GeForce 920M		1180 points
	Difference: 5410 (458%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

In theory, the Radeon R9 270X should be 1144% faster than the GeForce 920M overall, due to its greater data rate. (explain)

Radeon R9 270X		179200 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 164800 (1144%)

Texel Rate

The Radeon R9 270X is much (about 162%) faster with regards to AF than the GeForce 920M. (explain)

Radeon R9 270X		80000 Mtexels/sec
GeForce 920M		30528 Mtexels/sec
	Difference: 49472 (162%)

Pixel Rate

If running with lots of anti-aliasing is important to you, then the Radeon R9 270X is a better choice, by far. (explain)

Radeon R9 270X		32000 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 24368 (319%)

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: Memory bandwidth is the maximum amount of information (measured in megabytes per second) that can be transferred across the external memory interface within a second. The number is calculated by multiplying the card's bus width by its memory speed. If the card has DDR type RAM, it should be multiplied by 2 again. If it uses DDR5, multiply by 4 instead. The better the memory bandwidth, the faster the card will be in general. It especially helps with anti-aliasing, High Dynamic Range and higher screen resolutions.

Texel Rate: Texel rate is the maximum texture map elements (texels) that are applied per second. This number is calculated by multiplying the total texture units by the core clock 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 applied in a second.

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