xmp doesnt work !(!!!!??? wt*)

[ghiaknchi]

hey

i have a ryzen 2700x cpu with asrock b450m pro4 mobo and patriot viper steel 3200Mhz 2x8 kit (put in the second and the forth dimm slots).

when i loaded the xmp settings (3200Mhz 1.35V 16-18-18-36) and restarted the monitor didnt show any output for the first 3 restarts (without cmos clear), after that i cleard the bios and tried to use 3000Mhz 1.35V 15-18-18-36 it works perfectly (in fact that is what im using right now). i tried to use 1.4V instead and it crashed in the Asrock logo screen (no input or anything, have to clear cmos and restart)...

 

p.s:

there is something weird about the mobo, or tell me if its ok:

Asrock doesnt let me go higher than 1.4 and also, it jumps in 0.5 so its either 1.2-1.25-1.3-1.35-1.4V, if you can help me change this as well ill be glad

 

Thx for any help

[Radium_Angel]

11 minutes ago, ghiaknchi said:

Thx for any help

XMP isn't an automatic success option. I've seen more failures under XMP than success stories. Go as high as you can and be stable, and be happy.

[Zando_]

1 minute ago, Radium_Angel said:

XMP isn't an automatic success option. I've seen more failures under XMP than success stories. Go as high as you can and be stable, and be happy.

^^^ XMP has always worked for me, but that's my one experience. It's often buggy, but usually just punching in the XMP settings manually works fine. 

 

OP, are you able to keypunch in 3200Mhz CL16-18-18-36? Or does it only do 3000Mhz? Only my R5 1600 capped at 2933Mhz (basically 3000), my Zen+ chips all did 3200Mhz fine (I had Ripjaws V, Patriot Viper, and Corsair Vengeance RGB with various rigs). Also is there a reason you want to go over 1.4v on your RAM? 

[ghiaknchi]

55 minutes ago, Zando Bob said:

^^^ XMP has always worked for me, but that's my one experience. It's often buggy, but usually just punching in the XMP settings manually works fine. 

 

OP, are you able to keypunch in 3200Mhz CL16-18-18-36? Or does it only do 3000Mhz? Only my R5 1600 capped at 2933Mhz (basically 3000), my Zen+ chips all did 3200Mhz fine (I had Ripjaws V, Patriot Viper, and Corsair Vengeance RGB with various rigs). Also is there a reason you want to go over 1.4v on your RAM? 

im not really sure what keypunch is but the computer doesnt accept input or provides any output (altho the num lock does light up, so its probably just unstable). everything works fine with 3000Mhz (as i said, im currently using this settings). there is no reason to go above 1.4, but maybe if i can get to like 1.41 the ram will be stable.

 

also, should i go 3200Mhz and up my CL? or is it better to go 3000 15 (didnt try less) CL than 3200 17< CL? from my calculations (which are really simply, so probably not taking into account the dependence of ryzen cpu of fast ram) its better to go 3000 with 15 CL than 3200 with 17, so should i really try? or wait for a bios update that hopefully help?

[Zando_]

3 minutes ago, ghiaknchi said:

im not really sure what keypunch is but the computer doesnt accept input or provides any output (altho the num lock does light up, so its probably just unstable). everything works fine with 3000Mhz (as i said, im currently using this settings). there is no reason to go above 1.4, but maybe if i can get to like 1.41 the ram will be stable.

 

also, should i go 3200Mhz and up my CL? or is it better to go 3000 15 (didnt try less) CL than 3200 17< CL? from my calculations (which are really simply, so probably not taking into account the dependence of ryzen cpu of fast ram) its better to go 3000 with 15 CL than 3200 with 17, so should i really try? or wait for a bios update that hopefully help?

The 2700X's Infinity Fabric speed is based off RAM clocks IIRC, if you can get it to 3200Mhz then that will be a slight speed improvement. Difference between the timings you run now and the XMP ones isn't really that different:

• 15-18-18-36
• 16-18-18-36

The first number is a 15, the rest is the same, not really a massive difference AFAIK. Try and get it to 3200MHz, then either run the stock 16-18-18-36 or try and pull those timings as low as possible to bring latency down. 

 

You're not able to enter settings in BIOS? And keypunching is just typing the numbers in by yourself instead of selecting an XMP profile (usually labeled DOCP in AMD BIOSes). 

[ghiaknchi]

1 minute ago, Zando Bob said:

The 2700X's Infinity Fabric speed is based off RAM clocks IIRC, if you can get it to 3200Mhz then that will be a slight speed improvement. Difference between the timings you run now and the XMP ones isn't really that different:

• 15-18-18-36
• 16-18-18-36

The first number is a 15, the rest is the same, not really a massive difference AFAIK. Try and get it to 3200MHz, then either run the stock 16-18-18-36 or try and pull those timings as low as possible to bring latency down. 

 

You're not able to enter settings in BIOS? And keypunching is just typing the numbers in by yourself instead of selecting an XMP profile (usually labeled DOCP in AMD BIOSes). 

ah ok i see, when i use the xmp and save, i cant get into bios, i have to clear the cmos to start again. i will try to keypunch. as for the timings i currently have, i didnt do much tweeking but maybe i can take it lower still though if you say i should try to go 3200, i will try to do it

thx a lot

[ghiaknchi]

8 minutes ago, Zando Bob said:

The 2700X's Infinity Fabric speed is based off RAM clocks IIRC, if you can get it to 3200Mhz then that will be a slight speed improvement. Difference between the timings you run now and the XMP ones isn't really that different:

• 15-18-18-36
• 16-18-18-36

The first number is a 15, the rest is the same, not really a massive difference AFAIK. Try and get it to 3200MHz, then either run the stock 16-18-18-36 or try and pull those timings as low as possible to bring latency down. 

 

You're not able to enter settings in BIOS? And keypunching is just typing the numbers in by yourself instead of selecting an XMP profile (usually labeled DOCP in AMD BIOSes). 

but i dont really understand what makes it not work if the manufacturers tried it and said it works fine, if you can try to explain ill be glad 

[Zando_]

4 minutes ago, ghiaknchi said:

but i dont really understand what makes it not work if the manufacturers tried it and said it works fine, if you can try to explain ill be glad 

I don't actually know enough about the workings of XMP to say why it can be funky lol. I just know sometimes it works, sometimes it doesn't. Usually manually entering the same settings works fine though. Son in your case, 3200Mhz memory clocks, 1.35v DIMM voltage, 16-18-18-36 timings, leave everything else on the RAM page at auto. 

[Radium_Angel]

1 hour ago, ghiaknchi said:

if you can try to explain ill be glad 

Because not all RAM is created equally. 

Ditto the manufacturing process to motherboards. It's why not all identical CPUs will equally overclock. It's called (informally) the Silicon Lottery. Sometimes you get lucky and win, other times not.

[ghiaknchi]

13 hours ago, Radium_Angel said:

Because not all RAM is created equally. 

Ditto the manufacturing process to motherboards. It's why not all identical CPUs will equally overclock. It's called (informally) the Silicon Lottery. Sometimes you get lucky and win, other times not.

So can i safely say that its a ram prob? Cause no matter what i do i cant get it to 3200: tried to up the voltage to 1.4, nah, tried to set the soc voltage to 1.1 (and even 1.2), doesnt even post, tried to loose on the timings (20 20 20 20 38), it starts but as soon as i type in my passward and move the mouse a bit, either crashes, or bsod

I have Asrock b450m pro4 mobo and ryzen 2700x cpu.

Now im running at 3000 and 13 15, 15, 15, 36

Which is good, but i feel like ive been deceived

[Radium_Angel]

2 hours ago, ghiaknchi said:

Now im running at 3000 and 13 15, 15, 15, 36

Which is good, but i feel like ive been deceived

You are not the only one who can't get full speed on their RAM, but for the record, the difference wouldn't be noticeable to you, or probably any synthetic benchmarks you would run. 

[Jarsky]

7 hours ago, ghiaknchi said:

Which is good, but i feel like ive been deceived

Ryzen 2700x only officially supports 2933Mhz. 

Its your BIOS on your board limiting your DIMM voltage to 1.4V.

 

3200Mhz XMP profiles just don't work with 2nd Gen Ryzen. You either need to swap out your board for one that doesnt have such a low limit on memory voltage, or you need to upgrade to a 3rd Gen Ryzen if you want to run this speed. Even with a different motherboard, the XMP profile itself wont be stable because of the Infinity Fabric on 2nd Gen Ryzen. With my 2700x I had to manually raise the DIMM voltage to 1.45V to get it stable @ 3200Mhz C16