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eVGA 75i FTW with 4 x 2GB RAM voltage/timing issues

post #1 of 6
Thread Starter 
Hello.

Back story: I just upgraded my system from 2 x 2GB DDR2 to 4 x 2GB DDR2 (OCZ 1066MHz), and all was well. Then I decided to update all my drivers and my BIOS.... When I built the PC a year or two ago I overclocked it and set custom timings/voltages etc., and didn't back them up or record them anywhere. NOW, I can't get stable!

Problem details: Prime95 failes on at least 1 thread after ~15 minutes. My RAM has an EPP profile that states: 533 MHz, with timings 5-5-5-15-26-2T-2.1v BUT I CANT GET ANYWHERE NEAR THAT. My current timings are: 500MHz, 6-7-7-20-30-2T-2.2v (volt setting in BIOS)...

The RAM is linked to my FSB at a 3:4 ratio, which puts my CPU at where I know I had it running for the last year or so: 3GHz (375 x 8). I'm not concerned with overclocking my RAM, and am perfectly fine with underclocking it a bit to play nice with the CPU, so long as I can get the timings at least where the SPD's EPP profile says it can handle.

Things I noticed so far: My temps are good (under 60 full load), and right now I'm stable with the forementioned slacked memory timings and slight OC on the CPU. If I tighten up the timings OR increase the CPU to 3.1 or 3.2 GHz, I get unstable freezing and/or Prime95 faults. IN CPUID's Hardware Monitor, my "DRAM" voltage is reporting 1.82 - 1.81v ... I have it set to 2.2v in the BIOS already, is CPUID correct, should I bump up the RAM voltage? It's supposed to be (according to EPP) 2.1v and I have it "set" to 2.2 already...

I have been stable with whatever OC I had before I cleared my BIOS for over 3 months with the 8 GB RAM installed... So I know it's a setting, just cant figure it out.

I will post up pics of my BIOS settings if requested, the voltages are a bit confusing to me.

Thx for the help in advance. And yes, I would like to get 3.2GHz stable as I know people have gotten ~3.6 with this CPU/mobo, any advice is mucho appriciatto!

Specs: Q9400 2.66GHz quad-core, 4 x 2GB OCZ 1066 DDR2, EVGA 750i FTW, 570 GTX, 750w Antec, 2 x 1TB Seagate, Windows 7 U

    
CPUMotherboardGraphicsRAM
Q9400 eVga 750i FTW 570 GTX 4 x 2GB DDR2 
Hard DriveOptical DriveOSMonitor
2 x 1TB Seagate Samsung Super Writemaster W7 U 24" Samsung 1920x1200 
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Logitech G15 Antec 750w Thermaltake Armor Logitech G700 
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CSHyde.com C4 Classic 
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CPUMotherboardGraphicsRAM
Q9400 eVga 750i FTW 570 GTX 4 x 2GB DDR2 
Hard DriveOptical DriveOSMonitor
2 x 1TB Seagate Samsung Super Writemaster W7 U 24" Samsung 1920x1200 
KeyboardPowerCaseMouse
Logitech G15 Antec 750w Thermaltake Armor Logitech G700 
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CSHyde.com C4 Classic 
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post #2 of 6
Sounds like the new bios is causing the issues. but cant be sure.

Can you post your bios settings, particularly the voltages.

I know the 750i & 4 sticks of ram is tricky to begin with. I would try getting stable with just 2 sticks in, and then adding the other two and see if that helps..
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The Money Pit
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post #3 of 6
Thread Starter 
Good thought, get steady with 2 sticks... Curious what CPUID Hardware Monitor will report the voltage on the RAM with just 2 sticks... Maybe it is a real voltage and I need to increase it when I add 2 more sticks...

Attached are the BIOS screen shots I thought were relivant...

What exactly would you set them to? I find that "Auto" adjusts the CPU/FSB quite nicely, and I'm only pretending to know what I'm doing with the rest lol



Edited by [unclan] Rhino - 10/31/11 at 1:53pm
    
CPUMotherboardGraphicsRAM
Q9400 eVga 750i FTW 570 GTX 4 x 2GB DDR2 
Hard DriveOptical DriveOSMonitor
2 x 1TB Seagate Samsung Super Writemaster W7 U 24" Samsung 1920x1200 
KeyboardPowerCaseMouse
Logitech G15 Antec 750w Thermaltake Armor Logitech G700 
Mouse Pad
CSHyde.com C4 Classic 
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CPUMotherboardGraphicsRAM
Q9400 eVga 750i FTW 570 GTX 4 x 2GB DDR2 
Hard DriveOptical DriveOSMonitor
2 x 1TB Seagate Samsung Super Writemaster W7 U 24" Samsung 1920x1200 
KeyboardPowerCaseMouse
Logitech G15 Antec 750w Thermaltake Armor Logitech G700 
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CSHyde.com C4 Classic 
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post #4 of 6
I would set the CPU FSB manually to 1.30 - 1.35, both are safe. The higher the FSB you try to run the higher this will need to be, I was at 1.40 for 425 (1700)


If you find you get stable with 2 sticks and have issues with 4 I would suggest trying to bump the SPP, that handles the comunication between Ram - PCIE - CPU, so adding the 2 sticks will require a bump.


Here is the 750i FTW thread, its a bit dated so I wouldnt bother bumping it. But you can see some of our settings in the first page that can give you an idea

http://www.overclock.net/intel-mothe...ck-thread.html


Quote:
Microsis
Frequencies/Timings
CPU: Q6600 @ 8 x 450 FSB = 3.6GHz
RAM: 2x2GB Crucial Ballistix @ 900MHz 4-4-4-12 2T
Voltages
CPU Core: 1.41875v (1.2500 VID)
CPU FSB: 1.4v
Mem: 2.2v
SPP: 1.5v

drewfus
Frequencies/Timings
CPU: Q6600 @ 8 x 458 FSB = 3.66GHz
RAM: 2x1GB Corsair Dominator @ 1100MHz 5-5-5-15 2T
Voltages
CPU Core: 1.52v
CPU FSB: AUTO
Mem: 2.2v
SPP: 1.55v

10acjed
Frequencies/Timings
CPU: Q6600 G0 @ 8 x 425 FSB = 3.40GHz
RAM: 2x2GB OCZ @ 800MHz 5-5-5-15 2T
Voltages
CPU Core: 1.45v BIOS, 1.42v windows (1.3125 VID)
CPU FSB: 1.4v
Mem: 2.1v
SPP: 1.5v

3xtr3m3
Frequencies/Timings
CPU: XEON 3110 @ 8 x 520 FSB = 4.15 GHz
RAM: 2x1GB Corsair Dominator @ 1040MHz 5-5-5-15 2T
Voltages
CPU Core: 1.424v
CPU FSB: 1.4v
Mem: 2.1v
SPP: 1.5v
The Money Pit
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
Hard DriveHard DriveOptical DriveCooling
120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
OSMonitorPowerCase
Win 7 Ulti-64 25" I-Inc iH253 Antec TruePower New TP-750 CoolerMaster HAF 932 
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The Money Pit
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
Hard DriveHard DriveOptical DriveCooling
120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
OSMonitorPowerCase
Win 7 Ulti-64 25" I-Inc iH253 Antec TruePower New TP-750 CoolerMaster HAF 932 
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post #5 of 6
Thread Starter 
Awesome, thx for the info!

I'll get crackin and see what happens... I think I was being way too nice to the SPP; those numbers you quoted have it at 1.5 and above... For whatever reason I was thinking SPP was bad to set over 1.35... I have no idea where I saw that (probably getting my numbers mixed up).

Cheers -
    
CPUMotherboardGraphicsRAM
Q9400 eVga 750i FTW 570 GTX 4 x 2GB DDR2 
Hard DriveOptical DriveOSMonitor
2 x 1TB Seagate Samsung Super Writemaster W7 U 24" Samsung 1920x1200 
KeyboardPowerCaseMouse
Logitech G15 Antec 750w Thermaltake Armor Logitech G700 
Mouse Pad
CSHyde.com C4 Classic 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
Q9400 eVga 750i FTW 570 GTX 4 x 2GB DDR2 
Hard DriveOptical DriveOSMonitor
2 x 1TB Seagate Samsung Super Writemaster W7 U 24" Samsung 1920x1200 
KeyboardPowerCaseMouse
Logitech G15 Antec 750w Thermaltake Armor Logitech G700 
Mouse Pad
CSHyde.com C4 Classic 
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Reply
post #6 of 6
Just remember that higher voltage will cause heat, so you may want to add a fan to the NB heatsink if you dont have the stock one on it
The Money Pit
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
Hard DriveHard DriveOptical DriveCooling
120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
OSMonitorPowerCase
Win 7 Ulti-64 25" I-Inc iH253 Antec TruePower New TP-750 CoolerMaster HAF 932 
  hide details  
Reply
The Money Pit
(15 items)
 
  
CPUMotherboardGraphicsRAM
i7-950 - 4.24 @ 1.40v Batch #3941B089 EVGA X58 SLI LE MSI 580 GTX Lightning - 950/1900/2200 @ 1.1v 6GB Mushkin @ 1475 - 6-8-6-24 
Hard DriveHard DriveOptical DriveCooling
120GB Vertex Plus 2 x 500GB WD Blues RAID0 Lite-On DVD/CD Custom H20 Loop 
OSMonitorPowerCase
Win 7 Ulti-64 25" I-Inc iH253 Antec TruePower New TP-750 CoolerMaster HAF 932 
  hide details  
Reply
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