hd-recording.at customacpro (ga-x58a-ud3r|i7 950|ati 5770)

[nean]

something about BIOS Setup:
I'll like to ask lnx2mac if it's possible that he add some information in his blog?

there is the thing with the RAM speed, XMP, lower voltage etc, this may be correct for the ram which lnx2mac is using but will definetly different to other ram models.

Definitely... Wasn't it clear in the blog post ?
I reworded that part a bit... Wanna take a look ?

thanx lnx2mac to make this clear again, not only for me but also for others.


I've compared XMP vs. manual, and in geekbench manual setting results negligible more points than XMP!
the only difference between xmp profile1 and recommended manual setting is the QPI/vtt voltage, and be warned not to raise it higher than 1,335V.
Some guys insists that it needs to be 1,35V and also corsair support is saying it "can be up to 1,35V" -> my experiance is that 1,355V is causing definetly freezes on my setup, not immediately but not later than several minutes under full load!
so, the easiest and safest way for this setup is to go with X.M.P Profile1, and thats why I do recommend to use it.

Quote:
Realtek ALC889 Static and Noise Issue
Highly recommended to disable "C1E" and "EIST" "Advanced CPU Core features" in BIOS because of really, really annoying electrical noise / oscillating buzzing noise / or however you'll call it! (in the studio, I ran crazy about this)

This has also been discussed a lot in the past, and affected not just audio, but for many nVidia users as well... And it's not specific to this mobo...
You can search the forum (IIRC some thread was named "Crazy noise" or something similar)...

There seems to be related also to how the PSU reacts to a sudden change of voltage/current in the mobo (hence disabling EIST seems to relieve this a bit).

With these on Auto or Disabled, you might get sub-optimal performance.
An alternative solution I remember was discussed was raising/lowering some voltage value...

Alternatively, this could be due to caps vibrating on the board, and some people even applied hot-melt glue (glue gun) on these to have them stop vibrating. Google that !

Good Luck!
Lnx2Mac

EXACTLY, this is what I wanna try to say!

I've found out that this noise is related to the "EIST" option, and as you said (and I confirm that) that this noise seems to be emerging by this "sudden change of voltage/current in the mobo",...
yep, this noise definetly come from the mobo, and not from unbalanced cables or caused by something outside of the computer!

that's almost the same as for the PowerMac G5 model, there it's called "NAP" -> on the G5 there is a workaround to disable "NAP" by some developer's CHUD Toolkit command "hwprefs cpu_nap=false", then the CPU works with constant power and noise disappear. A side effect is additional but negligible thermal load, but also more CPU Power/Performance (comparable to max. performance on energy saving settings)

Yesterday I've done some testing with "EIST", indeed, disabling this function may have some disadvantage because I only got half the points in geekbench when "EIST" was disabled?!?
My understanding was that if "EIST" is disabled the CPU also will be feeded with constant power, and it will result max. cpu performance, but this is not the case!

I need to research the "EIST" whats all about this, and how I can get rid of this noise without any disadvantages,...

thanx lnx2mac for all the usefull hints!!

 

[nean]

There seems to be related also to how the PSU reacts to a sudden change of voltage/current in the mobo (hence disabling EIST seems to relieve this a bit).

With these on Auto or Disabled, you might get sub-optimal performance.
An alternative solution I remember was discussed was raising/lowering some voltage value...

Alternatively, this could be due to caps vibrating on the board, and some people even applied hot-melt glue (glue gun) on these to have them stop vibrating. Google that !

Good Luck!
Lnx2Mac

it seems a minimun of overclocking (to 3,2Ghz) is sufficient to elimiate this audio noise problem ,... though all advances cpu features enabled ( also EIST and C1E ),... investigation still going on,...

I've read following guide to get in touch with oc (especially "Multiplier and Turbo")
http://www.overclockers.com/3-step-guid ... -i3-i5-i7/

after testings some manual settings I've tried this EasyTune6 stuff, and the result wasn't that bad:
=> bios -> load optimized defaults => windows -> et6 -> quickboost green 1 -> used discovered values to set it manual in bios,...
BCLK 140, ...

geekbench(32bit) went up from 9.590 to 10.050
temperature raise on idle from 39°C -> 42°C oc and on full load from 48°C -> 52°C oc

 

[nean]

Here are the BIOS settings for overclocking the system just a little bit (equivalent to “EasyTune Level1â€) from 3.06Ghz to 3.22Ghz.

NOTE: this solves the audio noise problem while having all advanced CPU features such as EIST and C1E enabled. So, absolute no disadvantages, also temperature increase is not that much, about additional 2-3°C idle and on not even more on full load (this CPU cooler is doing a good job).

geekbench(32bit) is at 10.050Points now.


also described here: http://hd-recording.at/dokuwiki/doku.ph ... erclocking

 MB Intelligent Tweaker(M.I.T.)

> Advanced Frequency Settings [Press Enter]

CPU Clock Ratio............................: 23
CPU Frequency ........................(GHz): 3.22 (140x34)
> Advanced CPU Core Features [Press Enter]

Intel(R) Turbo Boost Tech..................: Enabled
CPU Cores Enabled..........................: All
CPU Multi Threading........................: Enabled
CPU Enhanced Halt (C1E)....................: Enabled
C3/C6/C7 State Support.....................: Enabled
CPU Thermal Monitor........................: Enabled
CPU EIST Function..........................: Enabled
Bi-Directional PROCHOT.....................: Enabled

QPI Clock Ratio............................: Auto
QPI Link Speed........................(GHz): 5.04
Uncore Clock Ratio.........................: Auto
Uncore Frequency......................(MHz): 3360
>>>>> Standard Clock Control
Base Clock(BCLK) Control...................: Enabled
BCLK Frequency(MHz)........................: 140
Extreme Memory Profile(X.M.P.).............: Disabled
System Memory Multiplier (SPD).............: 12
Memory Frequency(MHz)......................: 1680
PCI Express Frequency(MHz).................: Auto
>>>>> Advanced Clock Control
CPU Clock Drive (mV).......................: 800
PCI Express Clock Drive (mV)...............: 900
CPU Clock Skew (ps)........................: 0
IOH Clock Skew (ps)........................: 0

> Advanced Memory Settings [Press Enter]

Extreme Memory Profile(X.M.P.).............: Disabled
System Memory Multiplier (SPD).............: 12
Memory Frequency(MHz)......................: 1680
Performance Enhance........................: Extreme
DRAM Timing Selectable (SPD)...............: Auto
Profile DDR Voltage........................: 1.5
Profile QPI Voltage........................: 1.175
Channel Interleaving.......................: Auto
Rank Interleaving..........................: Auto
>>>>> Channel A, B, & C
> Channel A, B, & C Timing Settings [Press Enter] -> Auto

>>>>> Channel A, B, & C Standard Timing Control
Cas Latency Time...........................: 8
tRCD.......................................: 8
tRP........................................: 8
tRAS.......................................: 20
>>>>> Channel A, B, & C Advanced Timing Control
tRC........................................: 27
tRRD ......................................: 4
tWTR ......................................: 4
tWR........................................: 8
tWTP.......................................: 19
tWL........................................: 7
tRFC.......................................: 60
tRTP.......................................: 4
tFAW.......................................: 20
Command Rate (CMD) ........................: 1
>>>>> Channel A, B, & C Misc Timing Control
B2B CAS Delay..............................: -
Round Trip Latency.........................: 60

> Channel A, B, & C Turnaround Setting [Press Enter] -> Auto

>>>>> Channel A, B, & C Reads Followed By Reads
Different DIMMs............................: 6
Different Ranks............................: 5
On The Same Rank...........................: 1
>>>>> Channel A, B, & C Writes Followed By Writes
Different DIMMs............................: 6
Different Ranks............................: 6
On The Same Rank...........................: 1

> Advanced Voltage Settings [Press Enter]

>>> CPU
LoadLine Calibration.......................: Auto
CPU Vcore..................................: Auto
xDynamic Vcore(DVID).......................: Auto
QPI/VTT Voltage............................: 1.335V 
CPU PLL....................................: Auto
>>> MCH/ICH
PCIE.......................................: Auto
QPI PLL....................................: Auto
IOH Core...................................: Auto
ICH I/O....................................: Auto
ICH Core...................................: Auto
>>> Dram
DRAM Voltage...............................: 1.660V 
DRAM Termination...........................: Auto
Ch-A Data VRef.............................: Auto
Ch-B Data VRef.............................: Auto
Ch-C Data VRef.............................: Auto
Ch-A Address VRef..........................: Auto
Ch-B Address VRef..........................: Auto
Ch-C Address VRef..........................: Auto

> Miscellaneous Settings [Press Enter]

Isochronous Support........................: Enabled
Virtualization Technology..................: Enabled

nean

 

[nean]

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nean