GeForce GTX 860M vs Radeon HD 7790

Intro

Compare those specs to the Radeon HD 7790, which uses a 28 nm design. AMD has clocked the core speed at 1000 MHz. The GDDR5 RAM runs at a speed of 1500 MHz on this particular card. It features 896 SPUs along with 56 Texture Address Units 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

GeForce GTX 860M		4340 points
Radeon HD 7790		4330 points
	Difference: 10 (0%)

Power Usage and Theoretical Benchmarks

Power Consumption (Max TDP)

GeForce GTX 860M		45 Watts
Radeon HD 7790		85 Watts
	Difference: 40 Watts (89%)

Memory Bandwidth

The Radeon HD 7790 should in theory perform quite a bit faster than the GeForce GTX 860M in general. (explain)

Radeon HD 7790		96000 MB/sec
GeForce GTX 860M		64000 MB/sec
	Difference: 32000 (50%)

Texel Rate

The GeForce GTX 860M is much (more or less 37%) more effective at anisotropic filtering than the Radeon HD 7790. (explain)

GeForce GTX 860M		76512 Mtexels/sec
Radeon HD 7790		56000 Mtexels/sec
	Difference: 20512 (37%)

Pixel Rate

If running with high levels of AA is important to you, then the Radeon HD 7790 is superior to the GeForce GTX 860M, and very much so. (explain)

Radeon HD 7790		16000 Mpixels/sec
GeForce GTX 860M		12752 Mpixels/sec
	Difference: 3248 (25%)

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 largest amount of information (in units of MB per second) that can be moved over the external memory interface in one second. The number is worked out by multiplying the interface width by its memory speed. If it uses DDR type RAM, it must be multiplied by 2 once again. If 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 higher screen resolutions.

Texel Rate: Texel rate is the maximum number of texture map elements (texels) that are applied in one second. This is worked out by multiplying the total number of texture units of the card by the core speed of the chip. The higher the texel rate, the better the card will be at texture filtering (anisotropic filtering - AF). It is measured in millions of texels per second.

Pixel Rate: Pixel rate is the maximum number of pixels the video card could possibly record to its local memory in one second - measured in millions of pixels per second. Pixel rate is worked out by multiplying the amount of ROPs 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 output rate is also dependant on lots of other factors, especially the memory bandwidth - the lower the bandwidth is, the lower the ability to get to the max fill rate.