GeForce 920M vs Radeon HD 7990

Intro

Compare that to the Radeon HD 7990, which uses a 28 nm design. AMD has clocked the core frequency at 950 MHz. The GDDR5 RAM works at a frequency of 1500 MHz on this card. It features 2048 SPUs as well as 128 Texture Address Units and 32 Rasterization Operator Units.

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 7990		15520 points
GeForce 920M		1180 points
	Difference: 14340 (1215%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 7990, in theory, should be quite a bit faster than the GeForce 920M in general. (explain)

Radeon HD 7990		576000 MB/sec
GeForce 920M		14400 MB/sec
	Difference: 561600 (3900%)

Texel Rate

The Radeon HD 7990 will be quite a bit (approximately 697%) faster with regards to AF than the GeForce 920M. (explain)

Radeon HD 7990		243200 Mtexels/sec
GeForce 920M		30528 Mtexels/sec
	Difference: 212672 (697%)

Pixel Rate

If using a high resolution is important to you, then the Radeon HD 7990 is superior to the GeForce 920M, by far. (explain)

Radeon HD 7990		60800 Mpixels/sec
GeForce 920M		7632 Mpixels/sec
	Difference: 53168 (697%)

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 data (in units of megabytes per second) that can be moved past the external memory interface in a second. It is worked out by multiplying the card's bus width by the speed of its memory. If the card has DDR type RAM, it should be multiplied by 2 again. If DDR5, multiply by 4 instead. The better the bandwidth is, the better the card will be in general. It especially helps with anti-aliasing, HDR and higher screen resolutions.

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

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