Eluktronics Hydroc G2 / Uniwill IDY 2025

[MiSJAH]

7 hours ago, PHVM_BR said:

This is the first time I've seen a VDDQ higher than VDD on these Arrow Lake HX systems.

These are the settings I used with my old Neo 17 with I9-13900HX probably not ideal for Arrow Lake but worked.

Still looking to get the voltages right for 7200MT/s but nothing is sticking and it restarts to 4800MT/s. Will keep upping the votages. 

Appears stable at 7000MT/s; VDD 1225, VDDQ 1175, & VPP 1800 with the standard 6400MT/s XMP timings.

[PHVM_BR]

1 hour ago, MiSJAH said:

These are the settings I used with my old Neo 17 with I9-13900HX probably not ideal for Arrow Lake but worked.

Still looking to get the voltages right for 7200MT/s but nothing is sticking and it restarts to 4800MT/s. Will keep upping the votages. 

Appears stable at 7000MT/s; VDD 1225, VDDQ 1175, & VPP 1800 with the standard 6400MT/s XMP timings.

A good settings for your memory, I believe without much difficulty, would be 7200 CL36 with:

 

tRCD/tRP = 42 or 44

tRAS = 60 to 84

 

VDD = 1275 to 1325

VDDQ = 1225 to 1275

 

You can also set the tREFI to 16-32k.

 

Once you find stability, you can adjust the subtimings by researching and understanding each step.

 

AI can help!

[PHVM_BR]

33 minutes ago, MiSJAH said:

Still looking to get the voltages right for 7200MT/s

Perhaps because tRCD/tRP = 40 is too tight for 7200MT/s.

[PHVM_BR]

https://www.3dmark.com/sn/13390291

 

 

https://www.3dmark.com/spy/63122281

 

 

[MiSJAH]

New TimeSpy high score for me.

RAM at 7000MT/s:

tCL : 36 

tRCD/tRP : 42 

tRAS : 72 

tCWL : 34 

tFAW : 24 

tREFI : 30000 

tRFC : 560 

tRRD : 4 

tRTP : 12 

tWR : 48 

tWTR : 14 

tRFCpb : 300 

tRFC2 : 400 

tRFC4 : 300 

tRRD_L : 12 

tRRD_S : 6 

tWTR_L : 24 

tCCD_L : ? 

tCCD_L_WR : 64 

tWTR_S : ? 

NMode : 2? 

 

VDD : 1250 

VDDQ : 1250 

VPP : 1825 

The 2 timings with ? will automatically crash if changed. 

Any other suggestions for tightening timings/increasing voltage?
 

[PHVM_BR]

On 5/9/2026 at 4:09 PM, MiSJAH said:

New TimeSpy high score for me.

RAM at 7000MT/s:

tCL : 36 

tRCD/tRP : 42 

tRAS : 72 

tCWL : 34 

tFAW : 24 

tREFI : 30000 

tRFC : 560 

tRRD : 4 

tRTP : 12 

tWR : 48 

tWTR : 14 

tRFCpb : 300 

tRFC2 : 400 

tRFC4 : 300 

tRRD_L : 12 

tRRD_S : 6 

tWTR_L : 24 

tCCD_L : ? 

tCCD_L_WR : 64 

tWTR_S : ? 

NMode : 2? 

 

VDD : 1250 

VDDQ : 1250 

VPP : 1825 

The 2 timings with ? will automatically crash if changed. 

Any other suggestions for tightening timings/increasing voltage?
 

I have two sets of memory, both 2x32GB dual-rank, so it's quite different (and demanding) compared to your kit.

 

If your memory is Hynix A-die, you can probably lower the tRFC significantly (384-448).

Try making it the same as tRFC2.

 

tRAS also, you can probably reduce it quite a bit (42-54).

 

You should be able to achieve 7200MT/s by increasing the VDD to 1300/1325.

If you can't, it may be necessary to loosen the tRCD/tRP slightly to 44.

 

For everything else, it's difficult for me to comment...

 

I went back to using the original memory, Adata 5600MT/s CL46, because its adjustment limit is almost identical to the other set I have (Fury Impact 5600MT/s CL40), both are Hynix A-die.

 

With Fury I can get some slightly tighter subtimings, but without a relevant difference in performance.

Perhaps 200 to 300 more points in the CPU score on TS.

 

Without access to manually adjusting SA and VDD2, I can't go any further...

 

My tuning is:

 

RATIO 192        
tCL 36
tRCD/tRP 39
tRAS 54
tCWL 34 (32 with Fury)
tFAW 16
tREFI 24576
tRFC 400
tRRD 0
tRTP 20
tWR 72
tWTR 0
tRFCpb 320
tRFC2 400
tRFC4 0
tRRD_L 8
tRRD_S 4
tWTR_L 24
tCCD_L 14 (12 with Fury) 

tCCD_L_WR 64 (56 with Fury)
tWTR_S 7

NMode 2
VDD 1300
VDDQ 1250
VPP 1800

[PHVM_BR]

New scores:

 

https://www.3dmark.com/spy/63490027

 

 

https://www.3dmark.com/sn/13862641

 

[win32asmguy]

3 hours ago, PHVM_BR said:

I have two sets of memory, both 2x32GB dual-rank, so it's quite different (and demanding) compared to your kit.

 

How are temps on your dual rank kits? I use the single rank A-die and M-die modules (2x16GB or 2x24GB). I had them tuned pretty decently but ran into heat related memory stability issues when the modules would get up to 85C in combined loads. I do not have the water cooling addon so its probably limited by the air cooling capability.

 

M-die can go up to 8000MT with VDD2 adjusted to 1.2v although I never really used it as I run in Hybrid graphics mode which still has glitches over 7200MT depending on the memory kit used.

[PHVM_BR]

1 hour ago, win32asmguy said:

 

How are temps on your dual rank kits? I use the single rank A-die and M-die modules (2x16GB or 2x24GB). I had them tuned pretty decently but ran into heat related memory stability issues when the modules would get up to 85C in combined loads. I do not have the water cooling addon so its probably limited by the air cooling capability.

 

M-die can go up to 8000MT with VDD2 adjusted to 1.2v although I never really used it as I run in Hybrid graphics mode which still has glitches over 7200MT depending on the memory kit used.

In games, based on the limited data I've recorded, the modules operate at 55-65°C.

 

In 1 hour of OCCT testing with CPU + Memory, the temperature stabilizes at ~84°C (the module in contact with the thermal pad of the memory's thermal enclosure) and ~79°C on the other module with a 1.5mm thick copper/graphene heatsink.

 

Before using this heatsink, this module stabilized at 89°C in the same 1-hour OCCT test.

 

I'm considering buying 3mm thick heatsinks and removing the thermal enclosure from the memory.

 

The temperatures will likely be lower.

 

I also don't have a water cooler, but I use an IETS GT600 which should make a significant difference.

 

If stability problems occur when your memory reaches 85°C, try decreasing the tREFI and/or increasing the tRFC.

 

For M-die, the tRFC should naturally be higher than in A-die.

[PHVM_BR]

- Lowest latency I managed:

 

 

- Highest bandwidth I obtained (almost saturating the theoretical maximum of 102.4GB/s at 6400MT/s).

Stable only up to ~75ºC: