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View Full Version : Any chance Maximus IX Hero might eventually support 4266 DDR4?



gourdo
01-21-2017, 01:32 AM
I went and bought 2x8GB 4266 DDR4 modules before realizing that it wasn't on the QVL list for the Maximus IX Hero which I also purchased to go with my i7-7700K.

I managed to get the RAM up to 3600MHz completely stable, using primary and secondary timings from the 4266 XMP profile (found via AIDA64) and a DRAM voltage of 1.35. Anything beyond that and I start to have problems. At 3733 and 3866, the system is actually completely stable and able to come out of sleep and cold boot fine, but it will not under any circumstances do a warm boot (Windows' "Restart" option). At 4000, the system will simply not boot regardless of vCore, VccSA, VccIO or DRAM voltage.

Sort of wondering if there might be a magical set of timings/voltages to get this to work with the Hero, or else an upcoming BIOS that might unlock 4266 like the Apex, or if I'm just plain out of luck. If necesary, I'll RMA the sticks for some 4133's, but NewEgg will charge me a $37.50 restocking fee, so hoping there's another path here...

Thanks for any guidance.

Nate152
01-21-2017, 02:17 AM
Hi gourdo

Welcome to the ROG forum !

At the top of the Dram Timing Control page try Maximus Tweak Mode 2.

Maximus Tweak Mode 1 - Helps with compatibility
Maximus Tweak Mode 2 - Helps with overclocking

gourdo
01-21-2017, 04:29 AM
Thanks for the response! I tried Tweak Mode 2 with 3733, 3866 and 4000MHz @ DRAM voltage of 1.40 (same as XMP). No changes from before: 3733/3866 will cold boot fine, but refuse to warm boot and 4000MHz simply won't boot at all. I also tried manually setting IO voltage to 1.25 and SA voltage at 1.35, but still didn't make a difference. I'm scared to add much more voltage to those components...

Raja@ASUS
01-21-2017, 07:10 AM
DDR4-4266 is likely to remain limited to the Maximus IX Apex. Don't see the 4-DIMM boards being able to manage that based on what I've seen so far. Even if they could, it would be so conditional that it wouldn't be prudent to put it on the QVL. I'd return that kit and get something suitable for the board, or accept running it at a lower frequency.

gourdo
01-21-2017, 08:04 AM
DDR4-4266 is likely to remain limited to the Maximus IX Apex. Don't see the 4-DIMM boards being able to manage that based on what I've seen so far. Even if they could, it would be so conditional that it wouldn't be prudent to put it on the QVL. I'd return that kit and get something suitable for the board, or accept running it at a lower frequency.

Thanks. So on deeper inspection, the QVL (http://dlcdnet.asus.com/pub/ASUS/mb/LGA1151/MAXIMUS_IX_HERO/MAXIMUS-IX-HERO_Z270_Memory_QVL.pdf) is oddly specific up at the high-end. 4133 only appears to support 4 piece 32GB sets which are really expensive and beyond my needs anyway. At 4000, there is only one 16GB set listed ( G.Skill F4-4000C18Q-16GTZ) which as far as I can tell is not actually sold anywhere. At 3866, all the 16GB sets are also 4 piece, but somewhat difficult to find. NewEgg has a 3866 G.Skill set (F4-3866C18Q-16GTZ), though curiously, the QVL only mentions the 32GB set (F4-3866C18Q-32GTZ) and instead lists a CAS 19 version at 16GB (F4-3866C19Q-16GTZ).

I guess my questions are, since I've been burnt buying non-QVL RAM already:
1. Is there any reasonable way to run 16GB @4133 or 4000 with this motherboard or do i take the QVL as gospel?
2. Alternatively, at 3866 can i make the assumption that if the board supports a CAS 19 16GB set and a CAS 18 32GB set, that it will support the CAS 18 16GB set of the same series?

Raja@ASUS
01-21-2017, 08:32 AM
1. It may be possible with a 2-DIMM kit, but it’s possible it will need a lot of manual tuning. 4-DIMM boards with T-topology are usually slightly better with 4-DIMM kits.

2. Again, may require some manual tuning. At these speeds things can be variable from system to system.

elmor
01-24-2017, 04:40 AM
I'd recommend you to aim for lower frequency with tighter timings. The Gskill 4266 2x8GB kit I have here can do 3733MHz 16-16-38-1T at 1.4V on Code, results should be very similar on Hero. Your performance will be better than any higher frequency at 2T CMD Rate.

gourdo
01-25-2017, 06:10 AM
I'd recommend you to aim for lower frequency with tighter timings. The Gskill 4266 2x8GB kit I have here can do 3733MHz 16-16-38-1T at 1.4V on Code, results should be very similar on Hero. Your performance will be better than any higher frequency at 2T CMD Rate.

Currently running at 3600 16-16-16-37 2T @ 1.35V stable. Maybe I'll try 1T next... I still cannot get 3733 to warm boot at all. If I shut down and cold boot, then it POSTS fine and seems completely stable in Windows @3733, but as soon as I do a restart, I get Q code 55. I've tried just about everything, including running it at 1.40V with very loose timings.

elmor
01-25-2017, 06:53 AM
Currently running at 3600 16-16-16-37 2T @ 1.35V stable. Maybe I'll try 1T next... I still cannot get 3733 to warm boot at all. If I shut down and cold boot, then it POSTS fine and seems completely stable in Windows @3733, but as soon as I do a restart, I get Q code 55. I've tried just about everything, including running it at 1.40V with very loose timings.

What if you set Fast Boot = Enabled under DRAM Timing Configuration? My settings below.

Ai Overclock Tuner [Manual]
BCLK Frequency [100.0000]
DRAM Frequency [DDR4-3733MHz]
DRAM Voltage [1.4000]
CPU VCCIO Voltage [Auto]
CPU System Agent Voltage [Auto]

Maximus Tweak [Mode 2]
DRAM CAS# Latency [16]
DRAM RAS# to CAS# Delay [16]
DRAM RAS# ACT Time [38]
DRAM Command Rate [1N]
DRAM RAS# to RAS# Delay L [6]
DRAM RAS# to RAS# Delay S [4]
DRAM REF Cycle Time [320]
DRAM Refresh Interval [11440]
DRAM WRITE Recovery Time [14]
DRAM READ to PRE Time [7]
DRAM FOUR ACT WIN Time [26]
DRAM WRITE to READ Delay [Auto]
DRAM WRITE to READ Delay L [Auto]
DRAM WRITE to READ Delay S [Auto]
DRAM CKE Minimum Pulse Width [5]
DRAM Write Latency [15]
tRDRD_sg [7]
tRDRD_dg [4]
tRDWR_sg [12]
tRDWR_dg [12]
tWRWR_sg [7]
tWRWR_dg [4]
tWRRD_sg [32]
tWRRD_dg [27]
tRDRD_dr [6]
tRDRD_dd [7]
tRDWR_dr [12]
tRDWR_dd [12]
tWRWR_dr [9]
tWRWR_dd [9]
tWRRD_dr [7]
tWRRD_dd [7]
TWRPRE [34]
TRDPRE [7]
tREFIX9 [Auto]
OREF_RI [Auto]
MRC Fast Boot [Enabled]
DRAM CLK Period [Auto]
Memory Scrambler [Enabled]
Channel A DIMM Control [Enable both DIMMs]
Channel B DIMM Control [Enable both DIMMs]
MCH Full Check [Auto]
DLLBwEn [Auto]
DRAM SPD Write [Disabled]
XTU Setting [Auto]

gourdo
01-25-2017, 08:31 PM
What if you set Fast Boot = Enabled under DRAM Timing Configuration? My settings below.

Tried your settigns and still no go. Super stable at 3600, but bumping to 3733 even with all these manual timings and settings doesn't seem to be. Kind of unfortunate since the memory should be able to handle it easily. Something between the CPU and motherboard is just not allowing it to properly open up.

elmor
01-26-2017, 03:45 AM
Tried your settigns and still no go. Super stable at 3600, but bumping to 3733 even with all these manual timings and settings doesn't seem to be. Kind of unfortunate since the memory should be able to handle it easily. Something between the CPU and motherboard is just not allowing it to properly open up.

The MRC Fast Boot option didn't help with the 55 after reboot?

At 3600 you can probably tune it down to 15-15-38-1T + Write CAS Latency = 14