what is max safe ddr voltage?

[nealh]

I have crucial pc2100 ddr ram 2 x 256 mg sticks what is the safest max voltage..is 2.8v too high???

 

[OverVolt]

I use 2.73v i bet 2.8+ would bring bring the life of the ram down. it prolly wouldn't last long @ 2.8v in my opinion. Just try looser timings to squeeze some more stabilty/mhz out of ddr

 

[nealh]

thanks I am at 2.7v now

 

[John]

Originally posted by: nealh
I have crucial pc2100 ddr ram 2 x 256 mg sticks what is the safest max voltage..is 2.8v too high???

Anything below 3.0v is fine. However, YMWV when you overclock things....

 

[Wind]

I won't go 2.9v or more. 2.8v is pretty high. How high u O/C ?...tht u need a 2.8v for.

 

[THUGSROOK]

2.7v is plenty

 

[Freshbrain]

 

[CraigRT]

i wouldn't go over 2.8 personally.
unless it was very well cooled.
really it can handle alot more than just that if it's cooled well
cooling is always the #1 problem....

 

[nealh]

My fsb is 166 on IT7 Max2 Rev2...the ram seems fine

Crucial PC2100 DDR 2.7v....at cas2.5/3/3/6 it will run at 166fsb....it does 160 fsb at 2.5/2/2/6 maybe 5



As I have stated in previous posts...this setup seems very stable but prime95 crashes...but 3D MarkSE 2001 and hot cpu tester have run at least 1.5hrs without a hitch...have not gone longer as my wife keeps using the computer
I have even be able to lower vcore...but the retail HSF temps are warm and I am sure it is mobo reading high..as the same case with 5 fans and athlon xp case temp was at least 5C cooler

P2.4@3.0ghz at 1.65 in bios actual is 1.63 load drops to 1.60v...
IT7Max2 Rev2..undervolts
Crucial PC2100 DDR 2x 256 at 2.7v at cas2.5/3/3/6..run memtest 86 default 7 tests for 2 loops no issues but need to do it longer as the extra tests stress the memory for hrs
Radeon 9700
3HDD 80gb 7200rpm DX740 Maxtor on serial ATA via adapter..master
80 gb WD 7200 rpmSE master
120gb Maxtor 5400 rpm master....all 3 HDD are on HPT 374 controller
LTD 16x DVD
Liteon 52246S
Aureal Vortex 2 works in winxp....snds very nice
SCSI adaptec 2906 for my scanner
Onboard realtek NIC
Onboard IEEE 1394
USB2
5 fans..3 sunon at full speed, 2 antec on fan control by PS
Antec True Power 480 w
WinXP

I have asked this before..why in the world will hot cpu tester and 3dMark2001SE run without crash but prime 95 dies right away

Also load temp is 64-67C with ASII and retail HSF...it clipped down hard...I really believe this mobo reports higher temps...also the HSF doesnot get very warm to touch and would guess if the HSF was not in good contact the temps would continue straight up under ful load and not pleateau


Any thoughts

 

[tzuknami]

Every system that I have overclocked eventualy got to a stage where stability was apparently great with everything BUT Prime95. Prime95 is a great stability tester and seems to find even the smallest instability. When I have reached this stage of overclocking in the past, I knew I was just about at max overclock for my system. Find where the weakpoint of your system is (with Prime95 usualy processor or memory) and upgrade the cooling, tweak the voltage, or simply back the speed off a bit and your Prime 95 will undoubtedly run forever. Then you will have a STABLE system. I went through denial stages withe Prime95 thinking "this program is BS. I can run anything but Prime95 and never have a problem." But if you leave the system as is you will eventually come across a situation that is processor or memory intensive and you will find the instablilty and the headache. Usually the wife telling you I told you not to overclock it. Listen to Prime95 it is your friend.

 

[Nighthawk69]

I use 2.7v... that's also as high as I can go with the P4B266-C and it has been plenty for full stability at DDR413.

 

[nealh]

Well I have overclocked for several yrs now and never had a system that was "Prime95" stable...it may have to do with the software and programs I run in the background..If I can encode video, play 3d games etc and I do not crash or lock up I am happy...

Even when Compuwiz1 was selling o/ced cpu he used cpu stability test and did not often Prime 95....he was great I miss his cpu's