GeForce 920M vs Radeon HD 7790

Intro

Compare those specs to the Radeon HD 7790, which features a core clock speed of 1000 MHz and a GDDR5 memory frequency of 1500 MHz. It also features a 128-bit memory bus, and makes use of a 28 nm design. It is comprised of 896 SPUs, 56 TAUs, and 16 ROPs.

Display Graphs

Hide Graphs

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 7790		4330 points
GeForce 920M		1180 points
	Difference: 3150 (267%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

As far as performance goes, the Radeon HD 7790 should theoretically be much superior to the GeForce 920M in general. (explain)

Radeon HD 7790		96000 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 81600 (567%)

Texel Rate

The Radeon HD 7790 should be a lot (about 83%) more effective at anisotropic filtering than the GeForce 920M. (explain)

Radeon HD 7790		56000 Mtexels/sec
GeForce 920M		30528 Mtexels/sec
	Difference: 25472 (83%)

Pixel Rate

If using a high screen resolution is important to you, then the Radeon HD 7790 is superior to the GeForce 920M, by a large margin. (explain)

Radeon HD 7790		16000 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 8368 (110%)

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 in a second. It is 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 ANOTHER 2x. The better the bandwidth is, the faster the card will be in general. It especially helps with AA, HDR and higher screen resolutions.

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

Pixel Rate: Pixel rate is the most pixels that the graphics card can possibly record to the local memory in one second - measured in millions of pixels per second. The figure is worked out by multiplying the number of Raster Operations Pipelines by the the card's clock speed. ROPs (Raster Operations Pipelines - also called Render Output Units) are responsible for filling the screen with pixels (the image). The actual pixel output rate also depends on quite a few other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to reach the maximum fill rate.