G.SKILL TECH FORUM

Go Back   G.SKILL TECH FORUM ? Product Discussion ? DDR4

DDR4 Looking for help with DDR4 memory? Post a thread in here

Reply
 
Thread Tools Search this Thread Display Modes
  #1  
Old 01-08-2018, 04:12 PM
Meeho Meeho is offline
Junior Member
 
Join Date: Jan 2018
Posts: 6
Meeho is reading into overclocking
Default F4-3200C15D-32GTZKW stability issues

Hi,

I have some issues with my new build with G.Skill TridentZ F4-3200C15D-32GTZKW 2x16 GB memory.

Intel i7-8700K
ASUS Prime Z370-A w/latest BIOS
Win 7 Pro x64

It fails Prime95 within 5-40 minutes with rounding errors at the rated 3200 MHz CL15-15-15-35-2T 1.35 V settings.

I've tried VCCSA/VCCIO voltages in the 1.0-1.3 V range without success. CPU is running stock, Asus MCE disabled.

What is interesting is that each stick tested individually works, but they fail when paired. If I bump the tRCD and tRP I regain stability.

My MBO sets these timings:

CL - 15
tRCD - 15
tRP - 15
tRAS - 35
CMD - 2

RAS to RAS Delay L - 7
RAS to RAS Delay S - 6
REF Cycle Time - 560
Refresh Interval - 12480
READ to PRE Time - 12
FOUR ACT WIN Time - 34
CKE Minimum Pulse Width - 8
Write Latency - 13

tRDRD_sg - 7
tRDRD_dg - 4
tRDWR_sg - 16
tRDWR_dg - 16
tWRWR_sg - 7
tWRWR_dg - 4
tWRRD_sg - 32
tWRRD_dg - 25
tRDRD_dr - 7
tRDRD_dd - 7
tRDWR_dr - 16
tRDWR_dd - 16
tWRWR_dr - 9
tWRWR_dd - 9
tWRRD_dr - 9
tWRRD_dd - 9
TWRPRE - 42
TRDPRE - 12
tREFIX9 - 108
OREF_RI - 64

If I downclock the memory to 2133 MHz, I regain stability. I've also tried 3400-15-16-16-35-2T 1.35V and it's much more stable but still fails after about two hours.

I've tried the other memory slots, same results.

Bad memory? Motherboard? CPU IMC?
Reply With Quote
  #2  
Old 01-09-2018, 01:42 AM
Meeho Meeho is offline
Junior Member
 
Join Date: Jan 2018
Posts: 6
Meeho is reading into overclocking
Default

3200-15-16-16-35-2T 1.35V is stable.
Reply With Quote
  #3  
Old 01-09-2018, 09:48 AM
GSKILL TECH's Avatar
GSKILL TECH GSKILL TECH is offline
Administrator
 
Join Date: Jul 2008
Location: Los Angeles, California
Posts: 13,054
GSKILL TECH has disabled reputation
Default

1.35V is set Voltage or actual Voltage?

Try slightly higher to see if it can improve stability. To prevent over Voltage, some motherboards have a slightly lower DRAM Voltage range compared to set Voltage.
__________________
Are you an overclocker? Have screen shots of your OC results? Please post and share your OC experience!

The new G.Skill Overclocking Section!

http://www.gskill.us/forum/forumdisplay.php?f=43
Reply With Quote
  #4  
Old 01-09-2018, 11:05 AM
Meeho Meeho is offline
Junior Member
 
Join Date: Jan 2018
Posts: 6
Meeho is reading into overclocking
Default

1.3530 set in BIOS, HWiNFO64 reads 1.36 V. Tried bumping it a bit higher. Didn't help.
Reply With Quote
  #5  
Old 01-11-2018, 02:47 PM
GSKILL TECH's Avatar
GSKILL TECH GSKILL TECH is offline
Administrator
 
Join Date: Jul 2008
Location: Los Angeles, California
Posts: 13,054
GSKILL TECH has disabled reputation
Default

Have you tried 3000 or 2800 to see if it can work?
__________________
Are you an overclocker? Have screen shots of your OC results? Please post and share your OC experience!

The new G.Skill Overclocking Section!

http://www.gskill.us/forum/forumdisplay.php?f=43
Reply With Quote
  #6  
Old 01-12-2018, 02:48 AM
Meeho Meeho is offline
Junior Member
 
Join Date: Jan 2018
Posts: 6
Meeho is reading into overclocking
Default

Quote:
Originally Posted by GSKILL TECH View Post
Have you tried 3000 or 2800 to see if it can work?
At what settings? It works even at 3400 MHz with the right timings.
Reply With Quote
  #7  
Old 01-15-2018, 09:48 AM
GSKILL TECH's Avatar
GSKILL TECH GSKILL TECH is offline
Administrator
 
Join Date: Jul 2008
Location: Los Angeles, California
Posts: 13,054
GSKILL TECH has disabled reputation
Default

Stable?

Feel free to send them in to see if a new kit works better. Are you still within 30 days of purchase?
__________________
Are you an overclocker? Have screen shots of your OC results? Please post and share your OC experience!

The new G.Skill Overclocking Section!

http://www.gskill.us/forum/forumdisplay.php?f=43
Reply With Quote
  #8  
Old 01-17-2018, 12:39 PM
Meeho Meeho is offline
Junior Member
 
Join Date: Jan 2018
Posts: 6
Meeho is reading into overclocking
Default

Quote:
Originally Posted by GSKILL TECH View Post
Stable?

Feel free to send them in to see if a new kit works better. Are you still within 30 days of purchase?
Yes, 3400 is stable for several hours I ran the tests. 3200-15-16-16-35-2T 1.35V is 24 h Prime95 stable (even if I overclock the CPU to 4.9 GHz)

I'm from Europe. I am still within the 30 days but I have to return them to the shop I bought the kit from as RMA to outside my country would make me liable for VAT upon the return of the replacement kit as I'm not the original importer (dumb regulations but it is what it is).

Is there a way you could instruct the shop I've purchased the kit from to issue me a replacement? They have hinted that they don't consider Prime95 to be a viable test (which I find absurd since a properly working system should run anything stabily) so I'm worried they'll run some basic benchmark that will show bo errors and refuse my return.
Reply With Quote
  #9  
Old 01-17-2018, 12:43 PM
GSKILL TECH's Avatar
GSKILL TECH GSKILL TECH is offline
Administrator
 
Join Date: Jul 2008
Location: Los Angeles, California
Posts: 13,054
GSKILL TECH has disabled reputation
Default

You need to contact the shop for their assistance.
__________________
Are you an overclocker? Have screen shots of your OC results? Please post and share your OC experience!

The new G.Skill Overclocking Section!

http://www.gskill.us/forum/forumdisplay.php?f=43
Reply With Quote
Reply

Bookmarks

Thread Tools Search this Thread
Search this Thread:

Advanced Search
Display Modes

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is On

Forum Jump


All times are GMT -8. The time now is 01:07 AM.


Powered by vBulletin® Version 3.8.3
Copyright ©2000 - 2018, Jelsoft Enterprises Ltd.
All rights reserved. Copyright 1989-2018, G.Skill International Enterprise