Setting up additional memory leads to the computer failing to start.

F5F Stay Refreshed Hardware Desktop Setting up additional memory leads to the computer failing to start.

The_Trap
Member

223

01-31-2025, 12:56 PM

Hi, this is my system https://uk.pcpartpicker.com/list/pmLzrr , I wanted to upgrade to 32gb ram, so I bought this https://www.ebay.co.uk/itm/326280612436 (2x8 3600mhz of Gskill Neo trident z memory,) its CL18 whereas my current kit is CL17. I presumed it should be fine to mix both of these RAM kits together, however whenever I try and boot my system with both kits installed (and I have ensured several times that the RAM is seated correctly) my computer won't boot, but if 1 set is installed at a time they both work, just not together. I've tried different seating combinations and even disabled XMP mode on my MOBO, are there any suggestions on how to get these kits to work together or is there something I'm doing wrong? Thank you.

The_Trap

01-31-2025, 12:56 PM #1

hammy488
Member

125

02-16-2025, 07:32 AM

Reset CMOS/BIOS settings. Lower clock speed to around 2400MHz using relaxed timing. Adjustments may be needed later. Combining components usually helps but can lead to problems.

hammy488

02-16-2025, 07:32 AM #2

Reset CMOS/BIOS settings. Lower clock speed to around 2400MHz using relaxed timing. Adjustments may be needed later. Combining components usually helps but can lead to problems.

GotEide
Member

202

02-23-2025, 09:48 PM

If you're within the return period for that 2x8 kit, I'd send it back and receive a 2x16 instead, keeping the existing 8s as backup. It's always good to have extra RAM on PS, and you pointed out I was running low on spares.

GotEide

02-23-2025, 09:48 PM #3

Mathiashnord
Junior Member

02-24-2025, 02:12 AM

Sure, I'll attempt this and let you know the outcome.

Mathiashnord

02-24-2025, 02:12 AM #4

Sure, I'll attempt this and let you know the outcome.

ripa5000
Posting Freak

884

03-01-2025, 09:23 PM

I purchased them secondhand, which means I can't exchange them, so I'll need to list them again if it doesn't work.

ripa5000

03-01-2025, 09:23 PM #5

I purchased them secondhand, which means I can't exchange them, so I'll need to list them again if it doesn't work.

Prime3656
Member

158

03-02-2025, 04:06 AM

Likely the C17 components are Samsung ICs while the C18 models represent Hynix variants. These internal differences mean they probably won't function well together. Perhaps they meet JEDEC standards at 2133/2400 but lack compatible XMP performance.

Prime3656

03-02-2025, 04:06 AM #6

ExodusMC
Member

146

03-03-2025, 07:51 PM

When combining rams with varying speeds, CL, brands, etc., greater diversity reduces the risk of imbalance or complete failure, or inconsistent performance in OC.

ExodusMC

03-03-2025, 07:51 PM #7

When combining rams with varying speeds, CL, brands, etc., greater diversity reduces the risk of imbalance or complete failure, or inconsistent performance in OC.