I recommend you start by doing a bit of research ... looking at reviews. I typically look at the MSI cards first as they almost always reviewed her at TPU and usually tops in OC
Today, we have for review the new MSI Radeon RX 580 Mech 2, which is an overclocked custom design variant of the RX 580. It comes with a dual-slot cooler and delivers excellent noise levels that match the quietest RX 580 cards. Overclocking is great, too; we reached 1540 MHz.
www.techpowerup.com
There you will see they obtained a core of 1540 Mhz on core and 2250 Mhz on memory where its capped. You can see here that it is a 12.7% OC over reference (66.7 fps) which is quite high for an AMD card. The 1060 manages about 18.2 % by comparison.
So basically, why spend a whole lotta T & E when someone has already done all the work ? Instead of inching up from the base clocks a step at a time, look at what others have done with your card and similar models, try those settings and testg .... move up and down as necessary to find the speciic stable point for your particular silicon/
Here's a Golden Sample Red Devil w/ massive cooling.
We review the PowerColor Radeon RX 580 Red Devil with 8GB graphics memory. This three slot cooled mainstream graphics card series will allow you to play your games in both the Full HD 1080P range as ... Overclocking The Graphics Card
www.guru3d.com
"You can use any tweaking utility of your preference of course. We use AfterBurner based on personal preference, all other brands like ASUS, Gigabyte and thus EVGA all have nice tweaking software available as well, it's just that advanced overlay and tweak functionality that AB offers that has my personal preference. Our applied tweak:
- Core: 1475 MHz
- Mem: 2250 (x4) = 9000 MHz
- Power +50%
- Voltage +96
- Fan 41% (reasonably silent)
Basically you'll gain another notch out of the graphics processor. The memory is limited at 2250 x 4 = 9 Gbps. The GPU will max out roughly at 1475 MHz, admittedly this stable but I would recommend dropping down 25 MHz for long term stability. We locked in the fan RPM at 45%, this is a normal noise level."
That is probably due to you being on AUTO for memory timings. With lower frequency the timings are able to tighten up meaning less latency.
Playing with memory freq and timings is not something that is for the uninitiated. Just increasing to 2300 doesn't mean anything unless you manually adjusted your timings and benched memory like crazy to check for instabilities. For instance if you increase to 2300 and everything else is on AUTO then your system will degrade timings to support that frequency, which could actually result in much slower performance and even system stability.
All these AMD users better be brushing up on memory overclocking. CAS,tRCD, tRP,tRAS, Command Rate, and many more. If you don't know what those mean then don't push your memory...unless you have XMP profiles for higher clocks.
The discussion here related to th Video card's 8 GB of on board memory ... there is no "Auto", XMP, CAS,tRCD, tRP,tRAS, Command Rate etc applicability here.