GeForce 930M vs Radeon HD 7790

Intro

Compare all of that to the Radeon HD 7790, which comes with a clock speed of 1000 MHz and a GDDR5 memory speed of 1500 MHz. It also uses a 128-bit memory bus, and uses a 28 nm design. It is comprised of 896 SPUs, 56 TAUs, and 16 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 HD 7790		4330 points
GeForce 930M		1490 points
	Difference: 2840 (191%)

Power Usage and Theoretical Benchmarks

Memory Bandwidth

The Radeon HD 7790 should theoretically perform a lot faster than the GeForce 930M overall. (explain)

Radeon HD 7790		96000 MB/sec
GeForce 930M		14400 MB/sec
	Difference: 81600 (567%)

Texel Rate

The Radeon HD 7790 will be a lot (about 151%) more effective at AF than the GeForce 930M. (explain)

Radeon HD 7790		56000 Mtexels/sec
GeForce 930M		22272 Mtexels/sec
	Difference: 33728 (151%)

Pixel Rate

The Radeon HD 7790 is quite a bit (more or less 116%) better at AA than the GeForce 930M, and capable of handling higher resolutions more effectively. (explain)

Radeon HD 7790		16000 Mpixels/sec
GeForce 930M		7424 Mpixels/sec
	Difference: 8576 (116%)

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: Bandwidth is the maximum amount of data (measured in megabytes per second) that can be transferred across the external memory interface in one second. It is calculated by multiplying the bus width by its memory speed. If it uses DDR memory, it should be multiplied by 2 again. If DDR5, multiply by ANOTHER 2x. The better the card's memory bandwidth, 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 are processed per second. This is calculated by multiplying the total amount of texture units by the core speed of the chip. The higher the texel rate, the better the graphics card will be at handling texture filtering (anisotropic filtering - AF). It is measured in millions of texels applied per second.

Pixel Rate: Pixel rate is the most pixels that the graphics chip can possibly record to its local memory in a second - measured in millions of pixels per second. The figure is worked out by multiplying the amount of ROPs by the the card's clock speed. ROPs (Raster Operations Pipelines - aka Render Output Units) are responsible for outputting the pixels (image) to the screen. The actual pixel fill 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 maximum fill rate.