Overclock.net › Forums › Components › Memory › 4sticks of Gskill 2gb ram voltage/timing question
New Posts  All Forums:Forum Nav:

4sticks of Gskill 2gb ram voltage/timing question

post #1 of 8
Thread Starter 
Hey all! LONG time reader, first time reg'er.

Last year purchased two sticks of Gskill 99924 2gb (4g total) ram from newegg. OC'd them to 1600 and they've been champs since. (phenon 550 on a Gigabyte MA-GA770ot)

Newegg had a deal on the same ram for half the price, picked up two more sticks and figured it'd be easy peasy.


Nope.

Stability issues abounded. I've upped the voltage from stock 1.5 to 1.56, and NB frequency to 2200 and its voltage to 1.4 (from 1 or 1.1 stock?) and still nothing. I get into windows, load up David Bowies discography and start playing BFBC2 to tax the system. Start killin beeches and I BSOD after a few minutes. The new ram seems good (yet to do an all night memtest-a-thon though)


My question is: how high do I dare put the ram voltage (I've seen some say 1.65, but is that just for two?) and How high should I put the Northbridge voltage and clock (mind you, stock heatsink with a spot fan on it + 120mm blowing right on the area) in seeking stability? Searched but I've hit a wall.


Finally, should I just revert to 1333 and tighter timings, like 77724?


Thank you very much in advance!


PS-Got an offbrand (HEC) PSU @ 585watt, Raedon 5750 1gig gfx, two drives, dvd, and 7 fans...could it be my PSU reaching its ceiling?


Update 5/14/11: Got it to work with 4 sticks, needed a better PSU, got a new cooler for NB, then pushed the NB to near 2600 and 1.3 voltage with the multiplier OC'd to 230. Got stability with four sticks @ 5.55x multi and 1.66 dram voltage...also 1.4 VID control. Timings are so far stable at 7-7-7-21. Here's my other thread:

http://www.overclock.net/amd-memory/1015028-prime95-fails-but-hyperpi-ok.html#post13504741
Edited by haniblecter - 5/14/11 at 2:53pm
post #2 of 8
Thread Starter 
Wow, my search failed, 1st and 2nd page had helpful posts.

Still, for my board, what's the highest I dare for the NB frequency and voltage? I have an aftermarket mosfet copper heatsink and two fans blowing across them.
post #3 of 8
Ram voltage you can go up to 1.65v easy. Those memory sticks can do 6-8-6-24 with 1.6-1.65v.
The NB speed you should be able to do 2600 with 1.3-1.4v.
Edited by dixson01974 - 4/21/11 at 5:14am
HTPC
(11 items)
 
  
CPUMotherboardRAMHard Drive
AMD A-3870K AsRock A75 Pro (FM1) HyperX DDR3 1866 8 GB SAMSUNG 830 256gb 
Hard DriveOptical DriveCoolingOS
SAMSUNG EcoGreen F4 2TB Plextor Black Blu-ray Burner Phenom II X4 stock Cooler Windows 10 
MonitorPowerCase
LG M2762D-PM Glossy Black 27" 5ms (1920x1080) Antec HG 900 Gerenic ATX Case 
  hide details  
Reply
HTPC
(11 items)
 
  
CPUMotherboardRAMHard Drive
AMD A-3870K AsRock A75 Pro (FM1) HyperX DDR3 1866 8 GB SAMSUNG 830 256gb 
Hard DriveOptical DriveCoolingOS
SAMSUNG EcoGreen F4 2TB Plextor Black Blu-ray Burner Phenom II X4 stock Cooler Windows 10 
MonitorPowerCase
LG M2762D-PM Glossy Black 27" 5ms (1920x1080) Antec HG 900 Gerenic ATX Case 
  hide details  
Reply
post #4 of 8
Most x2 550 = C2 revision
In which case you won't be getting 1600Mhz operation out of it
You'll have to stick with 1333Mhz; lower the timings to get the performance back, i.e. 7-7-7 should be capable easily on that kit

dixson has his kit confused; this kit can do 7-8-7 at most usually, the kits that can do 6-8-6 are the kits rated 7-8-7 or 8-8-8 by G.Skill I think.
post #5 of 8
Thread Starter 
Welp, Im getting bsod's in windows after a few minutes of use at 1600 and 999-24, the advertised, and 1333 and anyting lower than all 8's.

Raised voltage up to 1.68 on memory and it still does it. Only stable I've found is 1333 88824 @ 1.64volt and prime95 says there's some errors, but I've gotten no bsods whilst in windows

This is all with a NB at 1.14 @ 2200. If I raise it to 2400 it wont post and goes to last stable.

1.SO, would it not post because the NB doesnt have enough juice for the desired voltage? Im just mildly leery at making such a voltage jump (1.14 - 1.4 is alot of steps) and I still have the stock HS on it (its not on there well AND I ripped the Gigabyte logo plate off of it, looked like it was impeding airflow--just south of the CPU, ofc) Buying a nice Zalman one soon.


2. I've only been increasing two voltages, The NB Core Voltage and hte DRAM voltage. Do I want to also increase things like the CPU NB VID Control, DDR VTT Voltage Control, or really anything else besides just the DRAM Voltage Control and NB Voltage control?

3.As to the Hyper Threading, I want that on manual and in step with the NB's clock increases, right?

4.I also have the CPU OC'd mildly to 2.9, but I didnt increase any voltage to it, could that be a culprit?


Thanks XD and DIs for the response. I'm new to OC'ing memory.
Edited by haniblecter - 4/21/11 at 9:42am
post #6 of 8
First of all I would find out the CPU revision; go into CPU-Z (google it, d/l, install if you don't have it), look where it says "Revision". Does it say C2 or C3? If it says C2, 4 DIMMs with 1600Mhz will be very well impossible; with a C3 you may need only a few more tweaks; most 550 are C2, some are C3.

Second of all you are raising the wrong voltage; NB core voltage is chipset NB to control PCI-E lanes and IGP, does nothing to RAM stability. You are looking for the CPU NB VID. Increasing this will probably solve your problems at 1333Mhz.

For CPU-NB voltage 1.4V would be still safe, but not necessarily something you need right away; use only as much as you need, remember to stability test (use IntelBurn & HyperPi at 32M setting for quicker tests); I think increasing this would indeed solve the problem at 1333Mhz.

With HyperTransport (not HyperThreading), it should be as close to 2000Mhz as possible (do the math: bus clock x __ = 2000Mhz +/- 100Mhz)
post #7 of 8
Thread Starter 
According to this link: http://www.overclock.net/amd-general/87707-hypertransport.html

I dont ever want to increase the freq of the hyper transport, as it would be 'two cars driving on a 6 lane highway", the current freq is more than enough for the NB/Mem/CPU to all communicate effectively.

As for the different voltages, merely looking around the AMD boards found the, dur, BIOS board and the corresponding sticky about the labels, I want to increase the NB VID for the memory controller.


TY about the revision, it is a RB-C2, so Ill keep my experimentation to 1333 and try 777 18-24.

Any chance I can get down to t1 from t2?
post #8 of 8
Try it, if it's not stable return to 2T. 1T usually gives a very slight performance advantage but nothing worth sacrificing other timings for.
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Memory
Overclock.net › Forums › Components › Memory › 4sticks of Gskill 2gb ram voltage/timing question