KHX12800D3LLK3: Best timings

[Klaus_1250]

Hi,

I have an Gigabyte GA-EX58-Extreme, fitted with Kingston HyperX KHX12800D3LLK3/6G (triple channel, 6GB), running @1600.

When I purchased the kit, it was sold as 8-8-8-24. The XMP profile for 1600 states 8-8-8-20, even though it is automatically configured as 8-8-8-24 (which doesn't seem to make sense).

I'm currently running it with manual 7-8-8-20 timings @1600 and was wondering at what speeds/latencies other people managed to run this memory. I'm also wondering if there any more advanced timings that can be tweaked slightly beyond the XMP-profile.

[The Tigster]

Re: KHX12800D3LLK3: Best timings

Klaus,
I have these sticks on a Gigabyte EX58-UD5 board and have found the same problem. It auto configures to 8-8-8-24 settings.

Do you have any start up problem? I'm getting random POST failures when the boad shuts down with the DDR phase LED lit with a green and amber light.

The Tigster

[Lsdmeasap]

Re: KHX12800D3LLK3: Best timings

If you need help with your settings, please grab a template from my signature and post me your current settings and I will advise back.

I do advise you set your own memory settings, I do not think XMP is very good for X58 because you really need to find and set your own QPI/Vtt per your CPU. So you might as well also set your own ram timings and disable XMP

[The Tigster]

Re: KHX12800D3LLK3: Best timings

Thanks for your help offer lsdmeap,

Here's my current settings. Essentially, basic auto set up.
My problem is that I get a POST failure - with DDR phase LED lights staying lit up when I try a warm restart. A cold restart seems to work fine. Clearing CMOS also helps sometimes.

(Have triple checked connections, and tried taking peripherals out to no avail)

gigabyte Ex58-UD5 (f5 bios. f7 made no difference)
Core i7 920 D0
kingston Hyperx 6Gb PC3-12800C8 (KHX12800D3LLK3)
OCZ agility 120Gb SSD
Enermax 850W Revolution 85+PSU
WD Caviar 500GB HDD
Asus xonar DX soundcard
Nvidia 7900 GS vga (temporary - ATI 5850 on order)
Swiftech water cooling and apogee wblock


Advanced CPU Features:<?xml:namespace prefix = o ns = "urn:schemas-microsoft-com:office:office" /><o:p></o:p></PRE>
CPU Clock Ratio ................................ [20x]<o:p></o:p></PRE>
Intel(R) Turbo Boost Tech .................. [Enabled]<o:p></o:p></PRE>
CPU Cores Enabled ............................ [All]<o:p></o:p></PRE>
CPU Multi Threading .......................... [Enabled]<o:p></o:p></PRE>
CPU Enhanced Halt (C1E) ................... [Enabled]<o:p></o:p></PRE>
C3/C6/C7 State Support .................... [Disabled]<o:p></o:p></PRE>
CPU Thermal Monitor ......................... [Enabled]<o:p></o:p></PRE>
CPU EIST Function ............................ [Enabled]<o:p></o:p></PRE>
Virtualization Technology ................... [Enabled] << Disabled if you do not use Vmware or Virtual PC Programs<o:p></o:p></PRE>
Bi-Directional PROCHOT ..................... [Enabled]<o:p></o:p></PRE>
<o:p></o:p></PRE>
<o:p></o:p></PRE>
Uncore & QPI Features:<o:p></o:p></PRE>
QPI Link Speed .............................. x36<o:p></o:p></PRE>
Uncore Frequency .......................... (Auto)<o:p></o:p></PRE>
Isonchronous Frequency ..................[Enabled]<o:p></o:p></PRE>
<o:p></o:p></PRE>
<o:p></o:p></PRE>
Standard Clock Control:<o:p></o:p></PRE>
Base Clock (BCLK) Control ................ [Disabled]<o:p></o:p></PRE>
BCLK Frequency (MHz) .....................<o:p></o:p></PRE>
PCI Express Frequency (MHz) ........... [Auto]<o:p></o:p></PRE>
<o:p></o:p></PRE>
C.I.A.2 [Disabled]<o:p></o:p></PRE>
<o:p></o:p></PRE>
Advanced Clock Control:<o:p></o:p></PRE>
CPU Clock Drive ..............................[700mV]<o:p></o:p></PRE>
PCI Express Clock Drive ................... [700mV]<o:p></o:p></PRE>
CPU Clock Skew ............................. [0ps]<o:p></o:p></PRE>
IOH Clock Skew ............................. [0ps]<o:p></o:p></PRE>
<o:p></o:p></PRE>
<o:p></o:p></PRE>
Advanced DRAM Features:<o:p></o:p></PRE>
Performance Enhance ...................... [Turbo]<o:p></o:p></PRE>
Extreme Memory Profile (X.M.P) ......... [Disabled]<o:p></o:p></PRE>
System Memory Multiplier (SPD) ........ [AUTO]<o:p></o:p></PRE>
DRAM Timing Selectable (SPD) .......... [Auto]<o:p></o:p></PRE>
<o:p></o:p></PRE>
Channel A + B + C<o:p></o:p></PRE>
<o:p></o:p></PRE>
Channel A Timing Settings:<o:p></o:p></PRE>
##Channel A Standard Timing Control## 8-8-8-20 (auto)<o:p></o:p></PRE>
CAS Latency Time ......................<o:p></o:p></PRE>
tRCD .......................................<o:p></o:p></PRE>
tRP .........................................<o:p></o:p></PRE>
tRAS .......................................<o:p></o:p></PRE>
<o:p></o:p></PRE>
Below values may be left in Auto if you like, generally this is fine. For those users who DO Set advanced timings manually, please see some of my thoughts and findings about these settings and rules here<o:p></o:p></PRE>
##Channel A Advanced Timing Control##<o:p></o:p></PRE>
tRC ........................................ (Should be = tRAS + tRP or above for stability)<o:p></o:p></PRE>
tRRD .......................................<o:p></o:p></PRE>
tWTR ...................................... (Must be Write to Read Delay/Same Rank - (tWL + 4)<o:p></o:p></PRE>
tWR ........................................<o:p></o:p></PRE>
tWTP ....................................... (tWTP Must = tWR + tWL + 4)<o:p></o:p></PRE>
tWL ........................................ (tWL Must be CAS Latency -1)<o:p></o:p></PRE>
tRFC .......................................<o:p></o:p></PRE>
tRTP .......................................<o:p></o:p></PRE>
tFAW ......................................<o:p></o:p></PRE>
Command Rate (CMD) ................<o:p></o:p></PRE>
<o:p></o:p></PRE>
##Channel A Misc Timing Control##<o:p></o:p></PRE>
Round Trip Latency ...................<o:p></o:p></PRE>
<o:p></o:p></PRE>
<o:p></o:p></PRE>
<o:p></o:p></PRE>
Advanced Voltage Control:<o:p></o:p></PRE>
<o:p></o:p></PRE>
CPU<o:p></o:p></PRE>
Load Line Calibration ................. [Disabled]<o:p></o:p></PRE>
CPU Vcore ...............................1.25625<o:p></o:p></PRE>
QPI/VTT Voltage 1.150v ............1.150v<o:p></o:p></PRE>
CPU PLL 1.800v .......................1.100v<o:p></o:p></PRE>
<o:p></o:p></PRE>
MCH/ICH<o:p></o:p></PRE>
PCIE 1.500v ...........................1,5v auto<o:p></o:p></PRE>
QPI PLL 1.100v .......................1.1v auto<o:p></o:p></PRE>
IOH Core 1.100v .....................1,1v auto<o:p></o:p></PRE>
ICH I/O 1.500v .......................1.5v auto<o:p></o:p></PRE>
ICH Core 1.1v ........................1.1<o:p></o:p></PRE>
<o:p></o:p></PRE>
DRAM<o:p></o:p></PRE>
DRAM Voltage 1.500v ..............1.500v<o:p></o:p></PRE>
DRAM Termination 0.750v [AUTO]<o:p></o:p></PRE>
Ch-A Data VRef. 0.750v [AUTO]<o:p></o:p></PRE>
Ch-B Data VRef. 0.750v [AUTO]<o:p></o:p></PRE>
Ch-C Data VRef. 0.750v [AUTO]<o:p></o:p></PRE>
Ch-A Address VRef. 0.750v [AUTO]<o:p></o:p></PRE>

[Lsdmeasap]

Re: KHX12800D3LLK3: Best timings

I do suggest you update to the latest BIOS as F5 and F7 are very old and have many issues, F9i >>

http://www.fileden.com/files/2008/7/28/2024082/EX58UD5.F9i.zip

After F8d they added some advanced memory settings, and along with that several memory kits were made more compatible as the previous BIOSes did not properly work with certain IC Chips used in some kits.

So please do update, Beta BIOS is fine they are all I personally use and they include fixes and improvements long before final BIOSes do. And you MUST load optimized defaults after you flash, then save and apply and reboot back to the BIOS before making your needed changes (Don't forget SATA Settings, especially if you are using RAID). Please see my guide here if you are unsure about the proper BIOS flashing procedures, and do not use @BIOS!!

http://forums.tweaktown.com/f69/bios-flashing-how-qflash-guide-27576/

At 1600Mhz you may be able to run 777-20 with more QPI/Vtt voltag, ram voltage, and Uncore speeds, but you may not want to use the voltages needed to do so. 788-20 sound good, but if you want to try 777-20 I can help you try if you like. I do see you are not setting your own voltage for the ram or QPI/Vtt and this and your starting from Fail Safe settings is likely the cause of your issues, these must be set manually after you tweak them to find the best amount.


Then try these settings

Advanced CPU Features:
CPU Clock Ratio ................................ [20x]
Intel(R) Turbo Boost Tech .................. [Enabled]
CPU Cores Enabled ............................ [All]
CPU Multi Threading .......................... [Enabled]
CPU Enhanced Halt (C1E) ................... [Enabled]
C3/C6/C7 State Support .................... [Disabled]
CPU Thermal Monitor ......................... [Enabled]
CPU EIST Function ............................ [Enabled]
Virtualization Technology ................... [Enabled] << Disabled if you do not use Vmware or Virtual PC Programs
Bi-Directional PROCHOT ..................... [Enabled]


Uncore & QPI Features:
QPI Link Speed .............................. x36 or x44 would be fine at stock Bclk
Uncore Frequency .......................... (Auto) << Set to 2x your ram multi or 2x+1 or 2x+2 (I use this latter amount and find it to work the best)
Isonchronous Frequency ..................[Enabled]


Standard Clock Control:
Base Clock (BCLK) Control ................ [Disabled]
BCLK Frequency (MHz) .....................133
PCI Express Frequency (MHz) ........... [Auto] << 100

C.I.A.2 [Disabled]

Advanced Clock Control:
CPU Clock Drive ..............................[700mV] << These two will change to 800/900 after you load and apply optimized defaults, do not manually change please load optimized as there is several hidden settings that are not set properly if you do not.
PCI Express Clock Drive ................... [700mV] See above
CPU Clock Skew ............................. [0ps]
IOH Clock Skew ............................. [0ps]


Advanced DRAM Features:
Performance Enhance ...................... [Turbo] << Standard
Extreme Memory Profile (X.M.P) ......... [Disabled]
System Memory Multiplier (SPD) ........ [AUTO] << if using 133 (Stock) Bclk set x12 for 1600Mhz. Then above set Uncore to x24 or x26
DRAM Timing Selectable (SPD) .......... [Auto] << Manual

Channel A + B + C

Channel A Timing Settings:
##Channel A Standard Timing Control## 8-8-8-20 (auto)
CAS Latency Time ...................... 7-8
tRCD ....................................... 8
tRP ......................................... 8
tRAS ....................................... 20

Below values may be left in Auto if you like, generally this is fine. For those users who DO Set advanced timings manually, please see some of my thoughts and findings about these settings and rules here
##Channel A Advanced Timing Control##
tRC ........................................ (Should be = tRAS + tRP or above for stability)
tRRD .......................................
tWTR ...................................... (Must be Write to Read Delay/Same Rank - (tWL + 4)
tWR ........................................
tWTP ....................................... (tWTP Must = tWR + tWL + 4)
tWL ........................................ (tWL Must be CAS Latency -1)
tRFC .......................................
tRTP .......................................
tFAW ......................................
Command Rate (CMD) ................ << Set 1

##Channel A Misc Timing Control##
Round Trip Latency ...................



Advanced Voltage Control:

CPU
Load Line Calibration ................. [Disabled]
CPU Vcore ...............................1.25625 << Auto is fine if you are not overclocking your CPU
QPI/VTT Voltage 1.150v ............1.150v << This MUST be set, for 1600Mhz 1.3-1.42 is often what you need
CPU PLL 1.800v .......................1.100v << Hope that is a typo? But again these settings are all off due to you starting with Fail Safe settings. Stock is 1.8 and if not overclocking you can leave in Auto at 1.8

MCH/ICH
PCIE 1.500v ...........................1,5v auto
QPI PLL 1.100v .......................1.1v auto << May need 1.18-1.24 (Often 1.20-1.24 is good, some like Auto/Default)
IOH Core 1.100v .....................1,1v auto << Set 1.16-1.24 (On the higher end if you use 2x+2 uncore and or tighter ram timings)
ICH I/O 1.500v .......................1.5v auto
ICH Core 1.1v ........................1.1

DRAM
DRAM Voltage 1.500v ..............1.500v << Set 1.66
DRAM Termination 0.750v [AUTO]
Ch-A Data VRef. 0.750v [AUTO]
Ch-B Data VRef. 0.750v [AUTO]
Ch-C Data VRef. 0.750v [AUTO]
Ch-A Address VRef. 0.750v [AUTO]