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XMP Settings Question F4-2800C15Q2-64GRK Memory Kit

tuckerr200
Level 7
I have been fighting this memory for days trying to get it stable.

Xmp Settings loaded for Ram and Changed BCLK to 125 from 127.3 and Dram Speed from 2800 to 2666
(I am 100% stable running it at 2666 with BCLK AT 125 and Strap 125.)
Dram Voltage Initial 1.30
Dram Eventual 1.26
System Agent Auto .816


If I leave settings at default Xmp settings BCLK is 127.3 and Dram At 2800
The system agent voltage jumps from .816 to 1.176
( why the big increase what controls the system agent voltage when set to auto?)


Unable to get system Stable with these settings.
I have tried to step through the system agent voltage with no luck.
I have increased the Initial voltage to 1.35 and eventual to 1.30
(The Ram seems more stable at Low Voltage instead of High voltage?)

Any Help would be appreciated
I have tried the recommended guides to no avail.

:):):):):)
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5 REPLIES 5

Minsekt
Level 7
tried 100 bclk yet? 1.275v, 100 bclk 2800mhz with vccsa of 0.800 and enter your primary timings (15-16-16-35-T2) manually
usually you dont need to increase vccsa if youre not using more than 3000mhz ram, but im not sure if this applies to 8x8gb/64gb kits of ram too.

Avenger411
Level 10
Hey,

You should know first that no cpu is the same. What works for me wouldn't for you in most cases. What you should do is to remove the "auto " system agent which is at 1.17v. Auto voltage values over 2800mhz are less than spot, i'd say they're damn wrong. Like minsekt said, go manual and start with a system agent voltage of 0.800. If it is not stable or if you lose dimms (bad system agent voltage), increment slightly and re-test. This is the way to do. Xmp settings for me haven't worked that well in any of the bios i've tried. You should also try the latest bios if it's not already done.

1. Use a fat32 formatted usb drive (trust me ntfs and exfat **** **** up, for me that is)
2. Shutdown computer
3. Clear cmos
4. Make sure you place the usb in the right usb 2.0 port
5. Hold the bios flashback button 2-3 seconds until it flashes
6. Wait 2-4 mins until it is done flashing
7. Clear cmos
8. Boot in bios
9. If you have a cpu overclock, make sure to stabilize it before jumping to memory
10. Manually enter memory settings (dram section included) (use loooser timmings if needed)
E.g : 17-17-17-37-2T, for testing purposes.
11. Stabilize system agent with smal increments (start at 0.800v)
12. Once you obtain post stability get in windows and realbench 2.4 for 30mins. If it crashes try a little more vdimm or consider looser timmings.

This should help.

Max
Cpu : Intel 5930K@4.25ghz@1.2v / Cache @4.25ghz@1.20v
Cpu Cooler : Corsair H100i
Case : Corsair 780T
Memory : G.Skills 32GB DDR4-3200mhz CAS 15-15-15-35-1T@1.370v
Motherboard : Asus Rampage V Extreme (BIOS 3504)
M2 : Samsung 950 Pro NVME 512gb (Gaming)
M2 : SSD1 : OCZ RD400A 128gb (windows)
SSD1 : Crucial MX100 512gb (data)
Gfx : EVGA Titan X w/ 980 Hybrid Cooling AiO Liquid Cooler
PSU : Antec HCP-1000W
Monitor : Asus RoG Swift

tuckerr200
Level 7
I wanted to thank you for your suggestions and give you a follow up. Some of the suggestions I had already tried with no luck. I finally took screen shots to see what was going on with voltages and XMP settings.

I am running 100% stable with the kit and it all came down to vcore, vcache & system agent voltages. With these left on auto setting I had instability! I manually entered the voltages and was stable. Then I kept backing down the preset voltage to see if It remained stable, and it was.

I am running less voltage for the following three settings and I am stable.


vcore 1.0 volts
vcache 1.0 volts
system agent .812 volts
CPU 3500 with/28 multiplier
125 strap
127.3 bclk
Dram 1.3 volts
Dram Eventual 1.26 volts

I am happy about this because it means i have a decent CPU and Memory. Just glad to get system stable at 2800 with 64 gig kit.
:):):):)

Avenger411
Level 10
Hey,

Good job! I hope you get the most of your system. I'm so glad personnally i went the X99 way instead of z97 at the time.

Max
Cpu : Intel 5930K@4.25ghz@1.2v / Cache @4.25ghz@1.20v
Cpu Cooler : Corsair H100i
Case : Corsair 780T
Memory : G.Skills 32GB DDR4-3200mhz CAS 15-15-15-35-1T@1.370v
Motherboard : Asus Rampage V Extreme (BIOS 3504)
M2 : Samsung 950 Pro NVME 512gb (Gaming)
M2 : SSD1 : OCZ RD400A 128gb (windows)
SSD1 : Crucial MX100 512gb (data)
Gfx : EVGA Titan X w/ 980 Hybrid Cooling AiO Liquid Cooler
PSU : Antec HCP-1000W
Monitor : Asus RoG Swift

Avenger411
Level 10
Hey,

Good job! I hope you get the most of your system. I'm so glad personnally i went the X99 way instead of z97 at the time.

Max
Cpu : Intel 5930K@4.25ghz@1.2v / Cache @4.25ghz@1.20v
Cpu Cooler : Corsair H100i
Case : Corsair 780T
Memory : G.Skills 32GB DDR4-3200mhz CAS 15-15-15-35-1T@1.370v
Motherboard : Asus Rampage V Extreme (BIOS 3504)
M2 : Samsung 950 Pro NVME 512gb (Gaming)
M2 : SSD1 : OCZ RD400A 128gb (windows)
SSD1 : Crucial MX100 512gb (data)
Gfx : EVGA Titan X w/ 980 Hybrid Cooling AiO Liquid Cooler
PSU : Antec HCP-1000W
Monitor : Asus RoG Swift