4x16GB 3600Mhz RAM possible for this spec?

[Wordenskjold]

Hi everyone,

I have configured the below PC for gaming. I'll be playing Cities Skylines with tonnes of mods, so I'm looking for 64GB of RAM. When configuring though, it seems that I'm not able to select 4x16GB 3600MHz RAM blocks, but only the 3200MHz version, or 2x16GB 3600MHz blocks. Is there a good reason for this? Would I have to buy the additional 2x16GB 3600MHz blocks and install manually?

Corsair seems to have the blocks available on their website, so I was wondering why I have to "downgrade" to 3200MHz to be able to get a total of 64GB of RAM at 3600MHz.

Thanks!

Case
CORSAIR iCUE 5000X RGB MID TOWER GAMING CASE
Processor (CPU)
Intel® Core™ i9 16-Core Processor i9-12900K (3.2GHz) 30MB Cache
Motherboard
ASUS® ROG STRIX Z690-A GAMING WIFI D4 (LGA1700, USB 3.2, PCIe 5.0) - ARGB Ready
Memory (RAM)
64GB Corsair VENGEANCE RGB PRO DDR4 3200MHz (4 x 16GB)
Graphics Card
8GB NVIDIA GEFORCE RTX 3070 Ti - HDMI, DP, LHR
1st M.2 SSD Drive
1TB SEAGATE FIRECUDA 530 GEN 4 PCIe NVMe (up to 7300MB/R, 6000MB/W)
1st Storage Drive
2TB SEAGATE BARRACUDA SATA-III 3.5" HDD, 6GB/s, 7200RPM, 256MB CACHE
Power Supply
CORSAIR 850W RMx SERIES™ MODULAR 80 PLUS® GOLD, ULTRA QUIET
Power Cable
1 x 1 Metre European Power Cable (Kettle Lead)
Processor Cooling
Corsair iCUE H115i ELITE CAPELLIX RGB Hydro Series High Performance CPU Cooler
Thermal Paste
STANDARD THERMAL PASTE FOR SUFFICIENT COOLING
Sound Card
ONBOARD 6 CHANNEL (5.1) HIGH DEF AUDIO (AS STANDARD)
Network Card
10/100/1000 GIGABIT LAN PORT
USB/Thunderbolt Options
MIN. 2 x USB 3.0 & 2 x USB 2.0 PORTS @ BACK PANEL + MIN. 2 FRONT PORTS
Operating System
Windows 11 Home 64 Bit - inc. Single Licence [KUK-00003]

 

[DarTon]

Hi I have nio idea why you cannot choose 4x16GB 3600Mhz but only 3200MHz. There was an issue for AMD Zen 3 motherboards, early on, where 4 sticks of 3600MHz could cause instability and PCS was informing people that it was safer to go with 3200MHz. Perhaps it's a hangover from that issue. You can always ring them up.

I would say though that the performance differential between 3200 CL16 and 3600 CL18 is, on average, very marginal. For some apps, video editing say, the higher frequency can be noticeable, for others the low CAS is better.

I'd also mention that, at least when I last checked in mid 2021, that both 3200 CL16 and 3600 CL18 16GB DIMMs, were both the same Micron B-die 17nm 1Rx8 downbins. Corsair was simply putting different labels on the same thing and charging a bit more for the one with the 3600 label. Both were actually slower in most apps than the Micron D-die 20nm 2Rx8 they'd been using the prior year. This though was reflected in the lower prices.

Personally, I have 3200 CL16 Micron D-die 20nm 2Rx8 which is just run at 3600 CL18. Never an issue.

 

[PyroAsh]

I suspect if you were to call them, they would sort it for you. I wanted 4 x 8gb 3600, but the configurator wouldn't let me. I just bought an additional 2 x 8gb later from the upgrade configurator.