Gigabyte Geforce GTX 1070 G1 Gaming 2-Way SLI Review: Page 7 of 22
Posted by Heath Coop on Wednesday, July 13, 2016 - 8:00am
Nvidia’s SLI and AMD’s Crossfire allow you to add additional cards for improved performance. Depending on the model, one to three additional cards may be added to the original card. The theory is that you can double, triple, or even quadruple the performance of one card alone.
The reality is that the more cards you add, the worse the scaling is. Two cards will not perform twice as fast as a single card, most of the time. By the time you get to four cards, it may only perform moderately faster than a three card arraignment. Generally, anything more than two cards is going to produce some headaches.
SLI and Crossfire do have requirements that have to be met in order for them to work. First off, the cards need to be capable of being used in a multi-card arraignment. Second, some cards are limited to the total number of additional cards you can use. For example, the GTX 1070’s we are using today are limited to a two card configuration. Lastly, there are motherboard requirements.
A SLI certified motherboard is required for SLI use. These are fairly common. Most enthusiast level Intel motherboards from the P55 chipset on are SLI certified, as well as some newer AMD motherboards. We will be using a SLI certified Intel Z170 chipset motherboard for this review.
For AMD Crossfire, pretty much any Intel or AMD chipset motherboard with two or more PCIe x16 slots running at 4x or higher will work.
Once the additional cards are installed, it is just a simple matter of configuring the multi-card arrangement in driver software. This is not a complicated task. As both Nvidia and AMD update their drivers quite frequently, I will not go into explaining exactly how to do that, as the next update might just change the procedure and we would not want to confuse anyone.