Jump to content


Photo
- - - - -

Can't get my 4000Mhz RAM any higher than 3600


  • Please log in to reply
5 replies to this topic

#1 streetwolf

streetwolf

    New Member

  • New Members
  • 3 posts

Posted 29 December 2017 - 12:01 PM

You can see from my specs below I have 64GB of memory.  3600Mhz is the highest I can achieve that is 100% stable.  I've gotten to 3700 but had CRC errors with my disk image backups which is one thing you don't want messed up.

 

I tried all kinds of changes in my UEFI to no avail.  My tight timings with 3600 makes my RAM perform up there with RAM running at 4000.  My main question to you folks is the cause of this issue because I have 'too' much memory?  Is the extra voltage and heat just to much to get to 4000? 

 

 

SPECS
-----

Corsair Graphite Series 780T Full-Tower PC Case.
GIGABYTE Z370 AORUS Gaming 7 Motherboard.
Corsair RMi Series RM1000i — 1000 Watt 80 PLUS Gold Certified Fully Modular PSU.
Intel Core i7-8700K CPU @ 5.0 GHz.
Corsair Vengeance LPX 64GB 4x16GB 4000Mhz CMK32GX4M2F4000C19 RAM. 3600MHz @ 17-18-18-38-2T
Onboard Realtek HD ALC1220
Dual ASUS PA249Q IPS 24" LCDs.
EVGA GeForce GTX 1080 Ti FTW3 GAMING, 11G-P4-6696-KR, 11GB GDDR5X, iCX Technology - 9 Thermal Sensors & RGB LED G/P/M.
Corsair Hydro Series H115i Extreme Performance Liquid CPU Cooler.
Corsair Lighting Nodes and LED strips.
2-Samsung 960 PRO M.2 500GB NVMe PCI-Express 3.0 x4 Internal Solid State Drive.
1-Seagate 2TB hard drive SATA6.
1-SanDisk EXTREME900 USB Device 450GB
1-Western Digital Black 4TB hard drive SATA6.
3x120mm Corsair LL Series RGB fans for the front of the case.
2x140mm Corsair LL Series RGB fans for the H115i Radiator.
1x140mm Corsair LL Series RGB fans for the rear of the case.
2x120mm Aigo R3 RGB fans on the bottom of the case.



#2 ir_cow

ir_cow

    I Am A Cow...

  • Reviewer
  • PipPipPipPipPipPip
  • 6345 posts
  • Gender:Male
  • Location:WA

Posted 29 December 2017 - 04:05 PM

I was going to suggest checking the QVL list for that ram since you are hitting a high number with all the slots filled. However Corsair website doesn't even list a 64GB kit above 3733  for LPX ram :(

 

Did you combine two 32GB kits? because that what the model number comes up with...Thats a no no when reaching higher speeds. It could be that those 4 sticks just don't work well together. Or corsiar doens't think any LPX sticks can run 4 dimms at 4000 which is why they don't offer it.


IR Twitter / OCC YouTube Channel / NVIDIA 1070Ti OC Guide

OCC Best AMD Motherboard Picks 2018 / OCC Best Mid ATX Computer Cases 2018

Main Rig: Threadripper 1920X, GIGABYTE X399 Designare EX, NVIDIA RTX 2080, Intel 730(s) 480GB, 32GB [email protected], Seasonic 1000w Plat.

Review Test Rig: : i7-4770k @ 4.2ghz, MSI-GD65 Gaming, Geforce GTX 770 , Corsair Force GT 240 GB, Patriot 16 GB 2400 (2x8gb), Thermaltake 750w.


#3 streetwolf

streetwolf

    New Member

  • New Members
  • 3 posts

Posted 30 December 2017 - 02:39 PM

I took out two of my sticks and still can't get past 3600.  I'm starting to think the problem might lie with my motherboard and/or UEFI.  Perhaps it's that darn memory training.  Seems whenever I change anything related to memory my machine reboots a few times and more than not returns to the BIOS. Sometimes when I do boot into Windows it used some old profile I saved.  Related to this, some of my profiles actually disappear.

 

Any other ideas on getting me over 3700?



#4 Braegnok

Braegnok

    Nimrod

  • Folding Member
  • 1514 posts
  • Gender:Male
  • Location:Colorado USA

Posted 30 December 2017 - 08:27 PM

Assuming your running BIOS Version F5h 2017/12/12,.. if not download, install. http://www.gigabyte....v-10#support-dl

 

Running 4X16GB at 4000Mhz would require a shit ton of voltage adjustment to your CPU VCCIO, and CPU System Agent,.. most likely your motherboard will not handle the voltage needed for 24/7 stability running 4X16 @ 4000Mhz.

 

Pulling one kit was a good idea,.. you may be able to get one kit running at 4000Mhz by slowly increasing VCCSA,.. go slow with the voltage increment as to much will cause instability just as not enough will also cause issues,.. I would not go over 1.4V on your VCCSA. 

 

If you can't get 4000Mhz stable it's not a big deal, other than price you paid for 4000Mhz memory,.. your not going to see any noticeable difference in bandwidth or FPS running at 3600Mhz with Coffee Lake.  https://www.techpowe...hmark_Analysis/


Intel Core i7-9700K 

ASUS Maximus X APEX

G.SKILL 3000MHz DDR4

GeForce RTX 2080 Ti

SeaSonic SSR-1000PD

Corsair H115i Extreme


#5 ir_cow

ir_cow

    I Am A Cow...

  • Reviewer
  • PipPipPipPipPipPip
  • 6345 posts
  • Gender:Male
  • Location:WA

Posted 30 December 2017 - 09:34 PM

I didn't think of this before but the performance index says 4000 @ CL19 = 210 and 3600 @ CL17 = 211. So really other than gaining theoretical bandwidth, 3600 is going to yield the same results as 4000 @ CL19. I would stick with 3600 rather than playing around with VCCSA voltages personally.


IR Twitter / OCC YouTube Channel / NVIDIA 1070Ti OC Guide

OCC Best AMD Motherboard Picks 2018 / OCC Best Mid ATX Computer Cases 2018

Main Rig: Threadripper 1920X, GIGABYTE X399 Designare EX, NVIDIA RTX 2080, Intel 730(s) 480GB, 32GB [email protected], Seasonic 1000w Plat.

Review Test Rig: : i7-4770k @ 4.2ghz, MSI-GD65 Gaming, Geforce GTX 770 , Corsair Force GT 240 GB, Patriot 16 GB 2400 (2x8gb), Thermaltake 750w.


#6 streetwolf

streetwolf

    New Member

  • New Members
  • 3 posts

Posted 31 December 2017 - 03:19 PM

Lot's of good info from you guys, I appreciate it.  I am hoping that you all can shed some insight into what some of the settings in my UEFI mean and more importantly can I use them to increase my memory speed.  Here they are with their corresponding values I can set them to.

 

Realtime Memory Timing:  Auto/Enabled/Disabled.

Memory Enhancement Settings:  Relax OC/Enhanced Stability/Normal/Enhanced Performance.

CPU Internal AC/DC LL:  Auto/Power Saving/Performance/Turbo/Extreme.  (I use Turbo for CPU Vcore LLC)

Dram Training Voltage:  Auto/Normal/A voltage of my choice.

Memory Multiplier Tweaker:  Auto/1-4. Auto defaults to 1.


I managed to O/C a little more by upping my BLCK to 100.75.  Memory is running at 3628 with the same timings. CPU now running at 5037 Mhz.  Uncore at 4535 Mhz.