AB350 PRO4 disables 1/2 of RAM |
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danswartz
Newbie Joined: 07 Jan 2018 Status: Offline Points: 6 |
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Posted: 07 Jan 2018 at 3:27pm |
Just built a brand-new Ryzen gaming rig. AB350 PRO4 motherboard. Ram is 4 sticks of g.skill flare x part F4-2400C15D-16GFX.) System POSTs fine. Going into BIOS shows all 4 sticks for a total of 32GB. Yet multiple operating systems are showing only 16GB of usable RAM. Windows 10 calls the other 16GB as "reserved for hardware". Linux and memtest86 also show 16GB of usable memory. The RAM is on the asrock QVL, but I note they only tested it with 2 parts. There is nothing obvious (to me at least) in the limited information the BIOS is presenting. I don't really *need* 32GB of RAM, so if this is unfixable, I will return 2 of the sticks, but I would dearly love to resolve this. I have confirmed the BIOS is the latest and greatest. CPU-Z shows 32GB RAM in dual channel mode. Any hints, tips or clues welcome. Thanks!
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datonyb
Senior Member Joined: 11 Apr 2017 Location: London U.K. Status: Offline Points: 3139 |
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3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold |
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zlobster
Groupie Joined: 02 Sep 2017 Status: Offline Points: 403 |
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1700X ZP-B1 (stock); X370 Taichi (UEFI 3.10); 16GB F4-3200C14-8GFX XMP; 256GB 960 EVO; RX 580 NITRO+ 8GB
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danswartz
Newbie Joined: 07 Jan 2018 Status: Offline Points: 6 |
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1. BIOS is showing as single channel.
2. No. I foolishly assumed their showing up meant I'd seated them correctly :) 3. Yes. 4. Yes - took longer to POST and had reset back to 2400. I will try reseating the sticks now, thanks! |
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danswartz
Newbie Joined: 07 Jan 2018 Status: Offline Points: 6 |
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I'm using a ryzen, so no iGPU at all. Very few UEFI options I can see - nothing looks germane. |
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danswartz
Newbie Joined: 07 Jan 2018 Status: Offline Points: 6 |
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one of the sticks must not have been 100% seated. i pushed in at both ends and the middle on all 4 sticks. i didn't *feel* any motion, but powering up into BIOS showed dual channel mode. windows now shows 32GB of ram. thanks again :) |
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zlobster
Groupie Joined: 02 Sep 2017 Status: Offline Points: 403 |
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One of those cases, eh?
Moral of the story - never assume! I'm glad it worked out at the end. Cheers! |
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1700X ZP-B1 (stock); X370 Taichi (UEFI 3.10); 16GB F4-3200C14-8GFX XMP; 256GB 960 EVO; RX 580 NITRO+ 8GB
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datonyb
Senior Member Joined: 11 Apr 2017 Location: London U.K. Status: Offline Points: 3139 |
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cool we have that solved
now please send all your bitcoins to me at dirtycheatingbstard@googlemail.etc etc etc haha |
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3800X, powercolor reddevil vega64, gskill tridentz3866, taichix370, evga750watt gold |
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