Strangely low framerates in AC Origins with RX 580

[imrazor]

I know AC Origins doesn't favor AMD GPUs, but my reference RX 580 is getting strangely low framerates. If you look at this article: https://www.pcgamer.com/assassins-creed-origins-performance-guide/

...you'll see that the reviewer's RX 580 was getting about 61 fps. However, my RX 580 is getting about 47 fps at 1080p/Medium. I realize that I have a reference model, and the reviewer was using an MSI card, but should there really be that much difference in framerates?

My RX 580 is paired with a Ryzen 7 1700. I also tested with a GTX 970 and my framerates almost exactly matched the figures in the article, so I don't think this is a CPU bottleneck.

I've also tested in Fallout 4, and the framerates of my RX 580 and the 970 I tested with were almost identical in Diamond City @ 1080p/Ultra.

Anyone have an explanation for the discrepancy in AC Origins?

 

[toshibitsu]

You have the exact same system configuration(except for the video card)? Because the video card/video card settings alone won't guarantee a particular FPS. It will also be dependent on the other installed components/settings, version of Windows(what's running in the background, etc)

 

[imrazor]

So I found the answer. When I bought this system, for some reason the manufacturer only included a single stick of RAM. When I added a second matching DIMM, my fps in AC Origins went from ~45 fps to 58 fps. Other games only get about a 5% boost, though Ghost Recon Wildlands went up 15%.

 

[toshibitsu]

Yes, ram does perform better when it's installed in pairs(it's best to use a matching set).