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e4300 overclock report / memory 2.0Volt question

post #1 of 5
Thread Starter 
hi,

i bought a 490 Euro PC last week, my first OC...
I have a question regarding the memory voltage. In short: how "safe" is 2.0V? I heard that with memory in general, even 2.1V is more or less fail-safe, because memory doesn't get so hot. It might not be stable, but it's very unlikely to be damaged - is that so?



my settings and results:

- Gigabyte DS3, revision 3.3
- E4300
- Scythe Ninja with 120mm fan
- Corsair XMS2 memory 675Mhz 4-4-4-12 (although CPU-z reads SPD as 5-5-5-15 at 333Mhz?)
- Be Quiet Power Supply 450Watt

FSB is currently 320Mhz stable (2.88Ghz)
Memory Divider is 1:1, so memory only runs at 640Mhz
advanced chipset features disabled (EIST, etc)
Vcore 1.325V
PCIe 100Mhz
Memory Voltage 2.0V
CPU idle temp: about 25 degree celsius
CPU during everest stability test: 44 degree celsius
other voltages are default



http://www.ryu.at/clip1.jpg



it was difficult reaching 320Mhz. first I tried a 4:3 memory divider (lowering the memory from its intended 667Mhz to 533Mhz at stock FSB), but that would prevent the PC from POSTing even at stock FSB !? Increasing to 1.9V didn't help.

I wonder why... it was cheap memory, yes, but it's not value memory, either. So I lowered the divider to 1:1 (Voltage still 1.9V), then I could increase FSB bit by bit, although sometimes it would beep and restart, beep, restart again, then booting ok after all...?

I came until 324 Mhz, then I couldn't start windows anymore. So I increased Voltage to 2.0, then I could start windows with FSB at 333Mhz. I started Everest stability test, but when I opened a browser window, the PC rebooted.

I don't understand why the memory can't do with these settings? CPU-Z says that latencies are 5-5-5-15 (at FSB333Mhz). At 333Mhz, this memory should run at 4-4-4-12, ffs
Isn't the memory divider totally irrelevant to the memory itself? I thought the memory doesn't care whether it runs at 200x1.67 or at 266x1.33 or at 333x1.00.... all same, is it not?

Could it be the northbridge or southbridge? they feel quite hot to the touch, maybe 45 or 50 degree celsius, but less than 60 for sure. I haven't bought a case yet, so i don't have case fans.

If 2.1V is "safe" enough for the memory to last for 2-3 years (it's a gaming PC), I'd really like to try 333Mhz. It looks more beautiful than 320Mhz...
post #2 of 5
2.1 is safe really ... if you have active cooling above the sticks. Just take an 80 mm fan and lie it on top or suspend it next to it , i did that with my ballistix which tend to run very hot with higher voltages and they werent even hot to the touch. I was really surprised. (Overclocked CPU to 2.7GHz and memory was overclocked above 900MHz).

Also , change these settings in the bios
g(mch) voltage : 1.35
mem voltage: 2.1
fsb termination voltage: 1.4
vcore (a.k.a cpu voltage): 1.4000
PCI-e: 100
PCI: 33
alpha
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alpha
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post #3 of 5
2.1 volts is fine - i have that memory, and i had it 100% stable running on a p5b at ddr2-800, 4-4-4-12, 1.9v.
Chief Keef
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Chief Keef
(16 items)
 
  
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WD 250GB Samsung DVD-RW AC Freezer 7 Pro Windows 7 Ultimate Edition x86 
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32" Insignia LED @ 1080p 550w Antec Truepower II Thermaltake Soprano Audigy 2 ZS 
Audio
Logitech 2.1 Speaker/Sub 
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post #4 of 5
Thread Starter 
thanks for the 2 quick replies.


I've now installed 4 case fans, and I'm cooling the NB with an Athlon CPU fan. Everest reads the "mainboard temperature" (northbridge?) as 35 degree celsius, but case temperature should be even lower.

I tried a lot of settings for memory (voltages up to 2.0 - don't wanna go higher; and various latencies, cl4 and cl5), but I cannot exceed an FSB of 320.

This means that my memory runs only at 640Mhz at 1.9V and 4-4-4-12 (increasing to 2.0V and 5-6-6-18 doesnt help).
I've now checked what exact memory I have. Specs are here:
http://www.corsairmemory.com/corsair...048-5400C4.pdf

According to this pdf, my memory should run at 667Mhz with 4-4-4-12 with no problem. hell, it should even go up to 675Mhz!
Does that have anything to do with the memory divider? it is 1:1 of course, not the default of 5:3.

does anyone know what means "Option1" and "Option2" for the memory configuration on the Gigabyte 965P DS3 rev.3.3 mainboard? I have it at Option1 (default).

help plz
post #5 of 5
I have read about people having problems with a DS3 because of the PCI-e speed, you might want to try setting PCI-e speed at 110mhz and see if that has any effect.
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Money dump
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Hard DriveOptical DriveCoolingOS
Samsung 830 128GB SSD, Seagate 3TB, Samsung 1TB Sony DVD/Rw 24x Thermalright Ultra 120 Extreme + GT AP-14 Windows 10 Pro 64-bit 
MonitorKeyboardPowerCase
Samsung U24E590D UHD Saitek Eclipse II Seasonic Prime 850w Titanium Corsair Carbide Air 540 
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