Can't set Dual channel memory

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   Hi, Just built a pc... asrock b450m steel legend motherboard, but my 2 memory modules don't run as dual channel.
Paperwork says to use A2 and B2 slots... which I have. 

Ram is:
Crucial Ballistix Sport LT BLS2K8G4D32AESBK 3200 MHz, DDR4

Any Ideas please  ? 

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Rooster Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 Apr 2020 Status: Offline Points: 7	Post Options Post Reply Quote Rooster Report Post Thanks(0) Quote Reply Topic: Can't set Dual channel memory Posted: 29 Apr 2020 at 12:11am
	Hi, Just built a pc... asrock b450m steel legend motherboard, but my 2 memory modules don't run as dual channel. Paperwork says to use A2 and B2 slots... which I have. Ram is: Crucial Ballistix Sport LT BLS2K8G4D32AESBK 3200 MHz, DDR4 Any Ideas please ?

datonyb Members Profile Send Private Message Find Members Posts Add to Buddy List Senior Member Joined: 11 Apr 2017 Location: London U.K. Status: Offline Points: 3154	Post Options Post Reply Quote datonyb Report Post Thanks(0) Quote Reply Posted: 29 Apr 2020 at 1:28am
	its 99% the ram modules are NOT seated correctly/firmly
	[url=https://valid.x86.fr/jpg250][/url] 3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold

Rooster Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 Apr 2020 Status: Offline Points: 7	Post Options Post Reply Quote Rooster Report Post Thanks(0) Quote Reply Posted: 29 Apr 2020 at 2:21am
	Thanks for the swift reply... reseated the ram, swapped them over, even tried the other 2 slots and it's exactly the same :-( bios screen sees each module, and reports the full 16gb - as does Windows. Downloaded cpuz and it reports dual channel! so now I'm well confused.. is it really running dual channel or not? Running bios 2.9 as supplied - all the pictures ive seen actually say dual under the ram on the main page, so I'm lost here. Any more ideas please ?

Synapse Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 12 Dec 2019 Status: Offline Points: 62	Post Options Post Reply Quote Synapse Report Post Thanks(0) Quote Reply Posted: 29 Apr 2020 at 7:15am
	If you put the sticks into proper slots (staggered), and have the full capacity available, it runs in dual channel, that's just how the slots are wired, there's no software toggle.

Rooster Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 Apr 2020 Status: Offline Points: 7	Post Options Post Reply Quote Rooster Report Post Thanks(0) Quote Reply Posted: 29 Apr 2020 at 11:59pm
	so are we saying that it IS in dual channel mode ? I was relying on the bios screen (v2. 9) reporting that, unless they have changed it !

kschendel Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 21 Aug 2018 Status: Offline Points: 86	Post Options Post Reply Quote kschendel Report Post Thanks(0) Quote Reply Posted: 03 May 2020 at 7:34am
	It's hardwired. If you are using A2/B2, and you have 2 8GB sticks, and it's reporting 16GB memory total, you are necessarily running dual channel. There's no other possibility. The A slots are wired to the A channel and the B slots are wired to the B channel.

Rooster Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 Apr 2020 Status: Offline Points: 7	Post Options Post Reply Quote Rooster Report Post Thanks(0) Quote Reply Posted: 03 May 2020 at 11:41pm
	Looks like it working properly then... they must have removed the option from the bios - which is what caused the confusion. Thanks to all who replied... far better support than from ASRock (who never seemed to grasp the issue) Thanks again, stay safe guys.

Rooster Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 29 Apr 2020 Status: Offline Points: 7	Post Options Post Reply Quote Rooster Report Post Thanks(0) Quote Reply Posted: 04 May 2020 at 7:26pm
	Just got an email from the techs... would have removed all the confusion if they'd left it in.. : Thank you for the update. Dual/Single channel is indeed not reported in BIOS anymore. As far as I know it has been removed from the latest AGESA version. I will ask my colleagues in Taiwan if they can bring it back in a future BIOS version, or ask AMD to integrate it in a future AGESA version (if it is really AGESA related). Thanks!