overclocking and memory voltage issues

T

tviceman

Limp Gawd
Joined
Oct 11, 2007
Messages
398
I've got an ASUS P5K-VM motherboard, which unfortunately only gives me a max memory voltage option of 2.1v. The ram I have is Crucial DDR2-800 (4-4-4-12), but is rated to run with those specs at 2.2v.

Right now I've got my memory timings set to 5-5-5-15 and my e6750 overclocked rock solid at 3.6ghz (450mhz frontside bus), but anything higher and it'll crash or reboot with any sort of significant CPU load. (I'm using a zalman CNPS9500 cooler, and my CPU never reaches 50 degrees ceslius under load)

If I were to switch out my current RAM with ram that has the exact same cas latency at a stock voltage of 2.1v, will this potentially help me to get past this overclock wall I've encountered?

Thank you in advance for any help!
 
Probally not.

450FSB is an amazing OC on an MCH with embedded graphics. Work on MCH cooling by redoing the heatsink thermal compound and put a fan on it. Then raise the MCH voltage a couple of notches. Unfortunately you cannot raise the CPU multi and reduce the FSB so you might just be at all you are going to get. As you are probably figuring out, I am thinking the MCH is the issue. It is exactly like the CPU and runs off the same FSB and needs the same attention to cooling. Throwing on-board graphics onto the chip does not help.

Something else I noticed.
(
I'm using a zalman CNPS9500 cooler, and my cpu never reaches 50 degrees ceslius under load
Click to expand...

At 3.6 GHz !!!!??? I find that a little difficult to believe, I mean, I am sure something it telling you that, I am just not sure I would rely on whatever it was. Coretemp? TAT/Orthos ? Fire up that combination and see where the temps go.

for example here is a guy with that heatsink and a lower OC and what he found, it seems odd you are so much cooler with a much higher OC.
http://hardforum.com/showpost.php?p=1031528648&postcount=11

You might want to jump down to the SFF forum, they got a thread on your board and seem to be getting some astounding results.
http://www.hardforum.com/showthread.php?p=1031475534
 
You could always do a volt mod on the board if you are comfortable with that kind of stuff.
 
BillParrish said:
At 3.6 GHz !!!!??? I find that a little difficult to believe, I mean, I am sure something it telling you that, I am just not sure I would rely on whatever it was. Coretemp? TAT/Orthos ? Fire up that combination and see where the temps go.

for example here is a guy with that heatsink and a lower OC and what he found, it seems odd you are so much cooler with a much higher OC.
http://hardforum.com/showpost.php?p=1031528648&postcount=11

You might want to jump down to the SFF forum, they got a thread on your board and seem to be getting some astounding results.
http://www.hardforum.com/showthread.php?p=1031475534
Click to expand...

You're right; I wasn't using the latest version of core temp. I guess the last version didn't read core 2 duo core temperatures correctly. I've witnessed it getting to 52 degrees, but nothing higher. My case as 4 fans and half the time I have the side off so I'm sure all that air flow/ventilation helps. Here's my temperature Idling and it's lower than his. Maybe he got a bum processor.

temp.jpg
>

Anyways, thanks for your input I really appreciate it.
 
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