can you downclock 3200mhz ddr4 ram to 2666mhz?

[mangoguy404]

I'm about to buy some ram on newegg but I want to make sure I don't screw myself over if I buy ddr4 3200mhz ram instead of ddr4 2666mhz ram

heres my part list https://pcpartpicker.com/list/C2fN9J
heres the 3200mhz ram I was thnking about using instead of the ram in the list https://www.newegg.com/Product/Product.aspx?Item=N82E16820232751&ignorebbr=1&nm_mc=AFC-C8Junction&cm_mmc=AFC-C8Junction-PCPartPicker,%20LLC-_-na-_-na-_-na&cm_sp=&AID=10446076&PID=3938566&SID=
forgot to add this but I saw somewhere something about the motherboard not being able to use ram higher than 2666mhz somewhere and thats why I want to know if the 3200mhz ram could downclock and work

 

[Calvin7]

Memory runs at Serial Presence Detect if left on [Auto].

SPD Speed 2133MHz
SPD Voltage 1.20v

Tested Speed 3200MHz
Tested Latency 16-18-18-38
Tested Voltage 1.35v

You can manually set the memory clock speed, DRAM timings and DRAM voltage.

 

[mangoguy404]

Memory runs at Serial Presence Detect if left on [Auto].

SPD Speed 2133MHz
SPD Voltage 1.20v

Tested Speed 3200MHz
Tested Latency 16-18-18-38
Tested Voltage 1.35v

You can manually set the memory clock speed, DRAM timings and DRAM voltage.

so if I buy the 3200mhz ram it should automatically set itself to a working speed?

 

[Karadjgne]

Ram has jedec tables. These specify the timings used for the speeds the ram is capable of. Ddr4 default is 2133 changed to 2400 or 2666 by the MC in the cpu. Just plugging in the ram, it'll run at whatever speed the cpu can do, if the speed of the ram is capable. 3200 will run at 2133, 2400, 2666, 2933, 3000, 3200 generally. More if it'll take manual OC. To change the ram from cpu default to something higher is either manual or Xmp setting, and some ram will have several xmp profiles for just that.

3200 just means that's what it's been factory tested to run stable at, it'll run at anything less too.

 

[cryoburner]

Yeah, you can run RAM at lower speeds, but Ryzen tends to perform best with RAM set to higher speeds, so if you can run it at 3200 or 3000, you should. First-generation Ryzen may "officially" support DDR4-2666, but it should also typically work fine set to faster speeds, which is preferred. According to the specifications for that motherboard on Newegg, it should support "DDR4 3200(O.C.)/ 2933(O.C.)/ 2666/ 2400/ 2133*1".

However, you might also consider going with the newer Ryzen 2600 and a B450 motherboard. It's possible to find the 2600 for about the same price in the US, and it should be a bit faster than a 1600.

Also, that seems to be a really expensive GTX 1060, and it shouldn't perform much faster than any other 1060. Unless the price is a lot lower in your region, I would suggest either going with a less expensive 1060 6GB, an RX 580 8GB at a potentially lower price still, or paying just a little more to move up to a 1070 or maybe 1070 Ti, which could be around 35-50% faster than that card.

 

[Calvin7]

Memory runs at Serial Presence Detect if left on [Auto].

SPD Speed 2133MHz
SPD Voltage 1.20v