GeForce 920M vs Radeon HD 7750

Intro

Compare those specifications to the Radeon HD 7750, which has a clock frequency of 800 MHz and a GDDR5 memory speed of 1125 MHz. It also makes use of a 128-bit bus, and uses a 28 nm design. It is made up of 512 SPUs, 32 TAUs, and 16 Raster Operation Units.

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 HD 7750		2240 points
GeForce 920M		1180 points
	Difference: 1060 (90%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 7750 should in theory perform a lot faster than the GeForce 920M overall. (explain)

Radeon HD 7750		72000 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 57600 (400%)

Texel Rate

The GeForce 920M will be a little bit (more or less 19%) more effective at texture filtering than the Radeon HD 7750. (explain)

GeForce 920M		30528 Mtexels/sec
Radeon HD 7750		25600 Mtexels/sec
	Difference: 4928 (19%)

Pixel Rate

The Radeon HD 7750 should be a lot (approximately 68%) more effective at full screen anti-aliasing than the GeForce 920M, and also capable of handling higher screen resolutions while still performing well. (explain)

Radeon HD 7750		12800 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 5168 (68%)

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 max amount of information (in units of MB per second) that can be transferred past the external memory interface in a second. It's worked out by multiplying the bus width by its memory clock speed. In the case of DDR type RAM, the result should be multiplied by 2 once again. If it uses DDR5, multiply by 4 instead. The higher the card's memory bandwidth, the faster 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 in one second. This is worked out by multiplying the total texture units of the card by the core clock speed of the chip. The higher the texel rate, 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 the graphics card could possibly record to the local memory in one second - measured in millions of pixels per second. The number is calculated by multiplying the number of ROPs by the the core speed of the card. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel output rate is also dependant on quite a few other factors, most notably the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the maximum fill rate.