confused, dual memory ?

ShiWarrior · 12 Aug 2015 at 17:23

just installed my msi z170a with skaylake cpu, corsair vengeance 2x4gb dual channel kit

installed everything, no output to monitor, so I took 1 stick of ram out and it worked

put 2nd stick in place of the other one to test it works, worked

put 2nd stick back in, nothing again

manual says to use DIMM slots 2 and 4, but that doesn't work, I tried slots 1 and 2 and that works ? is the correct of is the manual wrong?

wazza300 · 12 Aug 2015 at 18:01

try 1 and 3

should work in 3 and 4 for dual channel mode,right now your in single channel with it in slot 1 and 2

ShiWarrior · 12 Aug 2015 at 18:09

will try that, but manual says use dimm 2 slot first

thanks

ShiWarrior · 12 Aug 2015 at 18:14

nope nothing else works

slots 1and 2 only ?

wazza300 · 12 Aug 2015 at 19:12

what ram is it? speed ect

latest mb bios?

ShiWarrior · 12 Aug 2015 at 19:37

ive only just got it, so not updated bios, so no idea if its latest version or not

I have an msi z170A Gaming Pro
Corsair Vengeance LPX 24000C15 30000MHz

thanks for your help

ShiWarrior · 12 Aug 2015 at 22:07

went onto msi forums, they tell me I have bent pins on the cpu socket.. and need to rma the board

thanks for your help

wazza300 · 12 Aug 2015 at 22:09

What cooler are you using? If one with a backplate try loosening each screw a quarter of a turn first

AthlonXP1800 · 12 Aug 2015 at 23:02

ShiWarrior said:
manual says to use DIMM slots 2 and 4, but that doesn't work, I tried slots 1 and 2 and that works ? is the correct of is the manual wrong?

More likely a typo in manual. If you have only 2 sticks then you should installed in slot 1 and 3 then when buy extra 2 sticks and these should installed in slot 2 and 4.

Danny75 · 13 Aug 2015 at 00:47

AthlonXP1800 said:
More likely a typo in manual.

No - I've used MSI and Asus boards recently (past couple years) who want you to install in slots 2 and 4 first.

As for why, I remember reading that it's handier in instances where a cooler blocks the first slot. So makes sense.

AthlonXP1800 · 13 Aug 2015 at 20:20

Danny75 said:
No - I've used MSI and Asus boards recently (past couple years) who want you to install in slots 2 and 4 first.

As for why, I remember reading that it's handier in instances where a cooler blocks the first slot. So makes sense.

Past 2 years? Try 15 years since DDR launched.

I been done installed memory sticks in ASUS, ECS, Gigabyte and MSI motherboards slot 1 and 3 over the last 15 years. Never had a cooler blocked the first slot, of course you can moved to slot 2 and 4 if cooler blocked slot 1.

ShiWarrior · 13 Aug 2015 at 20:34

AthlonXP1800 said:
Past 2 years? Try 15 years since DDR launched.

I been done installed memory sticks in ASUS, ECS, Gigabyte and MSI motherboards slot 1 and 3 over the last 15 years. Never had a cooler blocked the first slot, of course you can moved to slot 2 and 4 if cooler blocked slot 1.

on my msi motherboard it does say slots 2 and 4

I even asked msi directly and they also say slots 2 and 4

oh and your username, I had one of them cpus !!

Danny75 · 14 Aug 2015 at 22:56

AthlonXP1800 said:
Past 2 years? Try 15 years since DDR launched.

I been done installed memory sticks in ASUS, ECS, Gigabyte and MSI motherboards slot 1 and 3 over the last 15 years. Never had a cooler blocked the first slot, of course you can moved to slot 2 and 4 if cooler blocked slot 1.

I'll say it in a different way so you can understand - the primary dual channel on many motherboards, especially recent ones, now consists of slots 2 and 4 by default. And the secondary dual channel (for when you add more sticks) consists of 1 and 3.

Does the memory work in and 1 and 3 if you put it in them first anyway? Yes, in most cases. It's just not the primary dual channel.

So no typo involved.