[SOLVED] I am considering mixing memory all from Corsair.

[JQB45]

The model numbers:

CMK8GX4M2B3000C16 vs. CMK8GX4M2C3000C16 - I wonder if I mixed them if I'd have compatibility issues.

I currently have a 2x4GB Kit of the older model Corsair RAM. The newer model is a revision different.

I doubt I would get DDR4-3000 with 4 slots occupied, but I was curious if you all thought it would work at all...





PCPartPicker Part List

CPU: AMD - Ryzen 5 1600 3.2 GHz 6-Core Processor (Purchased For $169.99)
Motherboard: ASRock - AB350 Pro4 ATX AM4 Motherboard (Purchased For $120.00)
Memory: Corsair - Vengeance LPX 8 GB (2 x 4 GB) DDR4-3000 Memory (Purchased For $120.00)
Storage: Western Digital - Caviar Blue 1 TB 3.5" 7200RPM Internal Hard Drive (Purchased For $39.99)
Video Card: EVGA - GeForce GTX 950 2 GB FTW ACX 2.0 Video Card (Purchased For $179.99)
Case: Corsair - 100R ATX Mid Tower Case (Purchased For $59.99)
Power Supply: SeaSonic - S12II 520 W 80+ Bronze Certified ATX Power Supply (Purchased For $46.71)
Optical Drive: Asus - DRW-24B1ST/BLK/B/AS DVD/CD Writer (Purchased For $18.89)
Operating System: Microsoft - Windows 10 Home OEM 64-bit (Purchased For $109.99)
Wireless Network Adapter: Asus - PCE-AC55BT PCIe x1 802.11a/b/g/n/ac Wi-Fi Adapter (Purchased For $54.99)
Case Fan: Noctua - NF-S12B redux-1200 PWM 59.1 CFM 120 mm Fan (Purchased For $14.99)
Monitor: AOC - e2752Vh 27.0" 1920x1080 60 Hz Monitor (Purchased For $243.79)
Mouse: Logitech - MX Anywhere 2 Wireless Laser Mouse (Purchased For $53.38)
Headphones: SteelSeries - Siberia V2 Headset (Purchased For $60.85)
Speakers: Logitech - Z623 200 W 2.1 Channel Speakers (Purchased For $129.99)
Custom: Chicony KB-5911 rebranded as Micro Inovations - Model # KB-5911 (Black) (Purchased For $4.24)
Total: $1427.78
Prices include shipping, taxes, and discounts when available
Generated by PCPartPicker 2019-05-21 18:13 EDT-0400

 

[Calvin7]

Memory is guaranteed in the form sold. Other combinations you decide to make have no guarantee to be compatible together. You are free to do your own compatibility testing with no guarantees.

 

[JQB45]

I've done it in the past but Ryzen at least initially was very sensitive to RAM in general. I do have the newest BIOS running currently and that resolved the memory issues I was having.
Its tempting since its only a $50 dollar gamble.

 

[USAFRet]

Will it work? Probably.
Might it fail? Maybe.

 

[JQB45]

I'm going to go for it, I'll give you all an update once I attempt to get it working.

 

[DMAN999]

I probably would try it too.
As USAFRet said it will probably work.

 

[JQB45]

I did it on an i5-2500k and ASRock Z75 PRO3 where I had a Kingston DDR3-1333 set of 2x2GB and I installed a DDR3-1600 set of 2x4GB for a total of 12GB of course it ran at 1333 but it worked fine - plug and play...

Kingston KHX1333C9D3B1K2/4G - DDR3 1333 CAS 9 (original set)
Crucial BLT2KIT4G3D1608DT1TX0 - DDR3 1600 CAS 8 (new set)

Memory: Kingston - Blu 4 GB (2 x 2 GB) DDR3-1333 Memory (Purchased For $52.99)
Memory: Crucial - 8 GB (2 x 4 GB) DDR3-1600 Memory (Purchased For $44.99)

 

[JQB45]

UPDATE:

I ended up mixing Corsair Vengeance LPX DDR4-3000 CAS 15-17-17-35 2x4GB with a Corsair Vengeance LPX DDR4-3000 CAS 16-20-20-38 2x8GB set for a total of 24GB, and without any tweaking needed to boot.
It is only running at DDR4-2133 15-15-15-36-51-2T for now however. I will do some BIOS tweaking and try to get it happy at DDR4-2666. If I can not get it to at least DDR4-2666 I'll remove the old 2x4GB set and sell it and run the 16GB kit at its rated speed.


UPDATE2:

I ended up getting the DDR4 kits running together at DDR4-3000 with the slower CAS 16-20-20-20-38-70-1T @ 1.350v timing but I felt that overall the system was unstable, displaying odd system issues and chose to back off for now to DDR4-2666 16-18-18-18-38-58-1T @ 1.210v, I am having no system stability issues at this time with these settings.

Overclocking the CPU to my previous overclock settings of 3.867GHz @ 1.3675v was attempted at DDR4-3000 and the system was so unstable that I had to clear the CMOS with the motherboard's onboard jumper. I'll attempt a smaller overclock now that everything appears stable at DDR4-2666 but I'm all out of will power to try that today, perhaps in a few days once stability seems good at my current DDR4-2666 I'll try it.

UPDATE3:

I am now running at DDR4-2800

Current Timings

DDR4-2800:


DDR4-2133:


DDR4-3000:


DDR4-2666:

 

[Jared Chu]

UPDATE:

I ended up mixing Corsair Vengeance LPX DDR4-3000 CAS 15-17-17-35 2x4GB with a Corsair Vengeance LPX DDR4-3000 CAS 16-20-20-38 2x8GB set for a total of 24GB, and without any tweaking needed to boot.
It is only running at DDR4-2133 15-15-15-36-51-2T for now however. I will do some BIOS tweaking and try to get it happy at DDR4-2666. If I can not get it to at least DDR4-2666 I'll remove the old 2x4GB set and sell it and run the 16GB kit at its rated speed.


UPDATE2:

I ended up getting the DDR4 kits running together at DDR4-3000 with the slower CAS 16-20-20-20-38-70-1T @ 1.350v timing but I felt that overall the system was unstable, displaying odd system issues and chose to back off for now to DDR4-2666 16-18-18-18-38-58-1T @ 1.210v, I am having no system stability issues at this time with these settings.

Overclocking the CPU to my previous overclock settings of 3.867GHz @ 1.3675v was attempted at DDR4-3000 and the system was so unstable that I had to clear the CMOS with the motherboard's onboard jumper. I'll attempt a smaller overclock now that everything appears stable at DDR4-2666 but I'm all out of will power to try that today, perhaps in a few days once stability seems good at my current DDR4-2666 I'll try it.

UPDATE3:

I am now running at DDR4-2800

Current Timings

DDR4-2800:


DDR4-2133:


DDR4-3000:


DDR4-2666:

Thanks for your information. I'm mixing 2x CMR16GX4M2C3000C15 with 2x CMK8GX4M1D3000C16. The system is unstable at 3000MHz (D.O.C.P profile) but it's fine at 2800MHz (Auto profile). My build:

• Asus PRIME X370-PRO
• AMD Ryzen 7 1700
• Nvidia GTX 1050-Ti
• 2x Corsair CMW16GX4M2D3000C16 16-20-20-38
• 2x Corsair CMR16GX4M2C3000C15 15-17-17-35

I just set the RAM frequency to 2800MHz using Asus AI Tweaking.