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CPU voltage and system question!!!

Last response: in Overclocking
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July 20, 2006 11:56:37 PM

Hello all!

I have an AMD 3700+ San Diego processor with an Arctic Freezer 64 Pro CPU cooler on it. Rest of specs: ASUS A8N-E 939 mobo, Antec NeoHE 550w PS, 2 120gb 7200rpm 8mb cache hard drives, 2gb (2x1024mb) Patriot DDR400 (2-3-2-5) 2.7v, X1900XTX 512mb with an Arctic Accelro X2 gpu cooler on it and an sound blaster audigy zs 2 sound card and Lite-On DVD-Rom as well as Lite-On DL DVD-RW...winXP Pro! All in an Antec P180 case

Here is my problem / current settings on comp!

CPU: 2625mhz (10.5x250) (4xHTT) "voltage problem down below!"
Mem: (2-3-2-5) (1T) 403.8mhz (2.7v)
X1900XTX 512mb (668mhz/775mhz)
Northbridge Voltage is stock (auto)
PCI Bus Speed is locked at (33.33mhz)
PCI Express Bus Speed is locked at (100mhz)

Here is my problem...my voltage on my CPU when set to auto on this motherboard gives me way to high of a voltage like anywhere from (1.425 - 1.49) so I set it manually IN THE BIOS to 1.375v and CPU-Z shows it anywhere from (1.6v - 1.425v)...these voltages seem to be more reasonable and then entire system on these settings passes all of the EuroSoft PC Check disk tests! So what I am as you'all is do you think that the voltage in the bios is set to low...to high, or should it stay where it is. Am I undervolting it and it will possibly hurt my proc...or am I over volting when I dont need to be!

Temps: CPU: 30 degrees C - 45 degrees C (min - max)
Mobo: 28 degrees C - 38 degrees C (min - max)

3Dmark06 Score: 5,158 (default catalyst settings)

Also if there is anything else with my setup that seems out of place and you think i should change something please let me know!

And I would also like to know the max voltage that my CPU can run safely on air if anyone knows the answer to that!

Thanks in advance for all of your help!

Best,

3Ball
July 21, 2006 12:16:17 AM

Quote:
Hello all!

I have an AMD 3700+ San Diego processor with an Arctic Freezer 64 Pro CPU cooler on it. Rest of specs: ASUS A8N-E 939 mobo, Antec NeoHE 550w PS, 2 120gb 7200rpm 8mb cache hard drives, 2gb (2x1024mb) Patriot DDR400 (2-3-2-5) 2.7v, X1900XTX 512mb with an Arctic Accelro X2 gpu cooler on it and an sound blaster audigy zs 2 sound card...winXP Pro! All in an Antec P180 case

Here is my problem / current settings on comp!

CPU: 2625mhz (10.5x250) (4xHTT) "voltage problem down below!"
Mem: (2-3-2-5) (1T) 403.8mhz (2.7v)
X1900XTX 512mb (668mhz/775mhz)
Northbridge Voltage is stock (auto)
PCI Bus Speed is locked at (33.33mhz)
PCI Express Bus Speed is locked at (100mhz)

Here is my problem...my voltage on my CPU when set to auto on this motherboard gives me way to high of a voltage like anywhere from (1.425 - 1.49) so I set it manually IN THE BIOS to 1.375v and CPU-Z shows it anywhere from (1.6v - 1.425v)...these voltages seem to be more reasonable and then entire system on these settings passes all of the EuroSoft PC Check disk tests! So what I am as you'all is do you think that the voltage in the bios is set to low...to high, or should it stay where it is. Am I undervolting it and it will possibly hurt my proc...or am I over volting when I dont need to be!

Temps: CPU: 30 degrees C - 45 degrees C (min - max)
Mobo: 28 degrees C - 38 degrees C (min - max)

Also if there is anything else with my setup that seems out of place and you think i should change something please let me know!

And I would also like to know the max voltage that my CPU can run safely on air if anyone knows the answer to that!

Thanks in advance for all of your help!

Best,

3Ball


Set the voltage in bios...forget what software programs say the voltage is.
July 21, 2006 12:21:19 AM

So is 1.375v for the vCore (CPU) an undervolt?...should I raise, lower or just leave how it is?

Best,

3Ball
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July 21, 2006 2:23:43 AM

You've got some very nice temps, I wouldn't undervolt it. I would at least have it on stock, or higher. Voltage, usually, only will cause higher temps when increased, but can cause processor damage when decreased.

Stock voltage is 1.35/1.4 for all of the latest AMD CPU's.

~Ibrahim~
July 21, 2006 2:47:56 AM

So I suppose that since my 1.375v is right in between the 1.35v - 1.4v that it is ok as long as there are no problems?

My voltage choices are:

1.350v - 1.3625v - "1.375v" - 1.3875v - 1.400v

Should I stay with the 1.375v or would anyone anyone recommend one of the others?

Best,

3Ball
July 21, 2006 2:52:00 AM

Choose whichever one is most stable. If you are stable at this one, increasing it won't get you higher FPS or more points in a particular benchmark.

1.375 is fine, but if their are stability issues inch it up 1.3875..

~Ibrahim~
July 21, 2006 2:53:00 AM

are you wanting to go higher?
on the overclock i mean?
July 21, 2006 2:54:30 AM

nah, I like my clock where it is, because my ram timings are as tight as i can get them and at pretty much there maximum speed on those timings!

Also this keeps my HTT at exactly 1000mhz (2000HTT) and 2625mhz (2.625ghz) is plenty fast enough! (IMO)

Best,

3Ball
July 21, 2006 2:57:35 AM

that is lower vlts and your temps are fine so i would not worry.
you should be good to go.

i have a similar setup except with a little more vlts.
July 21, 2006 2:59:46 AM

what are ur volts and speeds?

Just curious!

Best,

3Ball
July 21, 2006 3:06:19 AM

all stock now

but for the last 8 months or so.
2630mhz 3700
stock everything httx5,4 512 corsair xms timings at 3.3.3.8
multiplier at x11,fsb at 238 or 237 cant remember. but vlts
at 1.4375
could go to 2730mhz with just 2 xms 512s with tighter timimgs
the extra memory is a helluva better than the oc.
July 21, 2006 3:38:09 AM

Thx for all the help guys, I think im just goin to stick with 1.375v...it feels the best when im using it and it runs smooth and cool, so if if blows up it will just give me a reason to go dual core!

Best,

3Ball

Antec P-180 Case
Antec Neo HE 550w PS
AMD Athlon 64 3700+ Sandy @ 2625mhz (Arctic Freezer 64 Pro) (1.375v)
ASUS A8N-E 939 Motherboard (stock voltage)
Sapphire X1900XTX 512mb (668mhz/775mhz) (Arctic Accelro X2) (stock voltage)
(2x1024mb) DDR400 Patriot Performance Mem (2-3-2-5) @ 403.8mhz (2.7v)
(2x120gb: 7200rpm, 8mb cache, SATA Hard Drives)
Sound Blaster Audigy 2 zs
winXP Pro
3Dmark06 Score w/ default catalyst settings : 5,158
July 21, 2006 3:45:19 AM

Quote:
You've got some very nice temps, I wouldn't undervolt it. I would at least have it on stock, or higher. Voltage, usually, only will cause higher temps when increased, but can cause processor damage when decreased.

~Ibrahim~


Where did you hear this? I seriously doubt its credibility. If anything, undervolting a cpu will make it last longer. The only negative I can see is system stability: if the clock stays the same, and the vcore is decreased, this creates a situation that is essentially the same as raising clock speeds while keeping the voltage unchanged. You start to operate closer to the edge of instability, but as long as one tests their undervolt the same as one would test an overclock (prime95, yadda yadda) for stable operation, their should not be any worries about stability.
July 21, 2006 2:17:52 PM

I think I might have said it wrong, but I agree exactly with what you said in your post. Too low a voltage on an OC'ed CPU can cause stability issues. If prolonged, I'm sure it might cause some processor damage. Too high a voltage, and you see higher temps, which prolonged can cause some processor damage.

~Ibrahim~
August 9, 2006 2:42:20 PM

I was doing some research on RAM and found a lot of mixed reviews in the forums. I wanted to buy 2GB of RAM that would not be a problem to overclock with this mobo. As with everyone, price is always a constraint - somewhere in the $150-$200 range.

QUESTIONS:
-what is the RAM voltage level required to overclock nicely on this mobo, without any hitches?
-what SKU/brand do you recommend?

THANKS!

PS. I've never overclocked before, so I dont want to take the chip to it's extreme limits. Just want to punch it up as high as I can within safe levels, to get the biggest bang for my buck.

The rig: http://forumz.tomshardware.com/hardware/modules.php?nam...
August 9, 2006 3:00:59 PM

It might have been better to start a new topic. No offense, but this doesn't have anything to do with CPU voltage.

I remember one of your topics, but I forgot what the system build was. That link is not to your post, you might have forgot the Topic ID in the URL...

I'm assuming DDR2, so either 667 or 800. OCZ and Corsair XMS are good overclockers. Value RAM is all right as well.

~Ibrahim~
August 9, 2006 3:08:11 PM

Thanks ikjadoon.
August 9, 2006 3:27:30 PM

First off this is an old thread.
Second you have already attemped to answer my question once ikjadoon
third. my ram is DDR 400 Patriot performance memory (2-3-2-5), and I dont know value DDR2 ram that would have those timings!
fouth. the reason for my whole system is so that you would know everything about my system as to answer the question correctly. I wanted you to know everything about the system as I asked more than one question in this thread, but the main question was that of my CPU voltage.

i now have my comp at 2816mhz on 1.46v with my max load temp at 48 degrees celcius and im going to run it until it blows up!

Best,

3Ball
August 9, 2006 6:36:19 PM

Ach, man. I'm talking to FishBoi. He is talking about another thread, which is why I said he should've responded in that thread. This is in no way related to what your topic originally about.

2.8?!? Nice! Good luck, just don't push it too far.

~Ibrahim~
August 9, 2006 11:43:49 PM

LOL well then...sorry for that! Yea its runnin nice at 2.8ghz i was impressed to see it reach there and be stable! 12 hours prime 95 stable with 46 degrees celsius max temp and its been runnin for about a week now and have had no problems!

Best,

3Ball
August 10, 2006 1:47:01 PM

Prime stable? Shite, very very good! Have fun with the BEAST!

I've got to get that cooler...

~Ibrahim~
August 10, 2006 4:56:41 PM

Quote:
I think I might have said it wrong, but I agree exactly with what you said in your post. Too low a voltage on an OC'ed CPU can cause stability issues. If prolonged, I'm sure it might cause some processor damage. Too high a voltage, and you see higher temps, which prolonged can cause some processor damage.

~Ibrahim~



8O
No it wont cause any damage at all.
August 10, 2006 5:58:02 PM

Seriously? A CPU that constantly is having stability problems because of lowered voltage cannot at all damage the processor? It is like, as said before, running a OC'ed CPU without enough voltage. That might damage, no?

~Ibrahim~
August 10, 2006 6:13:48 PM

An OC CPU at stock voltage will last as long as a CPU also at stock speed!
Stable or not. What degrade a CPU are heat and overvoltage.
August 10, 2006 8:39:46 PM

Got it. Thanks!

~Ibrahim~
!