CPUs
 
Forums: » Register « |  User CP |  Games |  Calendar |  Members |  FAQs |  Sitemap |  Support | 
User Name:
Password:
Remember me

The Shed is going Social! Join us on FaceBook and Twitter and chime in on the conversation.

Go Back   Dev Shed ForumsComputer HardwareCPUs

Reply
Add This Thread To:
  Del.icio.us   Digg   Google   Spurl   Blink   Furl   Simpy   Y! MyWeb 
Thread Tools Search this Thread Rate Thread Display Modes
 
Unread Dev Shed Forums Sponsor:
  #1  
Old February 29th, 2008, 01:26 PM
pvp309rcp pvp309rcp is offline
Registered User
Dev Shed Newbie (0 - 499 posts)
 
Join Date: Feb 2008
Posts: 2 pvp309rcp User rank is Just a Lowly Private (1 - 20 Reputation Level) 
Time spent in forums: 1 h 11 m 9 sec
Reputation Power: 0
Overclocking problems... PSU limitations?

Hey everyone

It's my first time posting in any forum along with trying to overclock my first custom PC. I have an e6750 2.66ghz C2D that can't go pass 2.80ghz. I see everyone getting that CPU over 3.0ghz which makes it odd for me. So far I think the answer is that my PSU is insufficient. Anyway these are my computer specs.

ocz powerstream 520watt
evga 7150/630i
evga 8800gt 512mb
intel e6750 2.66ghz w/ arctic freezer 7 pro
2x corsair xms2 1gb ddr2 800
western digital raptor x
4x seagate barracuda
nec nd-3550a dvd-rw drive
lite-on blu-ray drive
3x 120mm case fans
2x 80mm case fans

Further detail is that my CPU runs idle between 35-39 degrees C which I think isn't that high and maybe 5 degrees higher on load. According to eXtreme Power Supply Calculator (google the name to find), I'm running at about 516 watts which is almost at the peak of what my PSU is. It may not be that accurate but it does give me hints that my answer would be to get a better PSU if I want to overclock. If I do need a new power supply, how many watts do you guys think is recommended to be safe? 600w? 700w? 800w? Any answers to what my problem might be which is preventing me from overclocking my CPU higher is appreciated.

Reply With Quote
  #2  
Old February 29th, 2008, 11:52 PM
edman007's Avatar
edman007 edman007 is offline
Trapped on the forums...help
Dev Shed Demi-God (4500 - 4999 posts)
 
Join Date: Aug 2003
Location: /Users/edman007
Posts: 4,617 edman007 User rank is Lieutenant General (80000 - 90000 Reputation Level)edman007 User rank is Lieutenant General (80000 - 90000 Reputation Level)edman007 User rank is Lieutenant General (80000 - 90000 Reputation Level)edman007 User rank is Lieutenant General (80000 - 90000 Reputation Level)edman007 User rank is Lieutenant General (80000 - 90000 Reputation Level)edman007 User rank is Lieutenant General (80000 - 90000 Reputation Level)edman007 User rank is Lieutenant General (80000 - 90000 Reputation Level)edman007 User rank is Lieutenant General (80000 - 90000 Reputation Level)edman007 User rank is Lieutenant General (80000 - 90000 Reputation Level)edman007 User rank is Lieutenant General (80000 - 90000 Reputation Level)edman007 User rank is Lieutenant General (80000 - 90000 Reputation Level)edman007 User rank is Lieutenant General (80000 - 90000 Reputation Level)edman007 User rank is Lieutenant General (80000 - 90000 Reputation Level)edman007 User rank is Lieutenant General (80000 - 90000 Reputation Level)edman007 User rank is Lieutenant General (80000 - 90000 Reputation Level)  Folding Points: 68775 Folding Title: Intermediate FolderFolding Points: 68775 Folding Title: Intermediate FolderFolding Points: 68775 Folding Title: Intermediate FolderFolding Points: 68775 Folding Title: Intermediate Folder
Time spent in forums: 1 Month 3 Weeks 3 Days 5 h 12 m 24 sec
Reputation Power: 904
Send a message via AIM to edman007
when its the PSU you will know it, most PSUs will refuse to start again after an overload, and the whole system shuts off, if its some other part generally you just fail POST or crash somewhere in the boot and reboot or something

My guess is your hitting the limit of the CPU at that voltage or the RAM is giving out on you, so first try changing the RAM to FSB ratio and/or loosening the timing, the next option would be to try boosting the voltage of the CPU a bit (that is required for any large overclock).

Then looking at the motherboard it does not seem to be that great at overclocking itself, when you overclock the FSB to boost the CPU it will also overclock at least the north bridge, and if you go for a big overclock your motherboard better have some big heatsinks, and i see mixed reviews on newegg about that. From the pics the heatsink looks pretty small and aluminum, compare that to some of the more expensive boards with a large copper heatsink.
__________________
Feed ME

Reply With Quote
  #3  
Old March 1st, 2008, 04:54 AM
pvp309rcp pvp309rcp is offline
Registered User
Dev Shed Newbie (0 - 499 posts)
 
Join Date: Feb 2008
Posts: 2 pvp309rcp User rank is Just a Lowly Private (1 - 20 Reputation Level) 
Time spent in forums: 1 h 11 m 9 sec
Reputation Power: 0
Quote:
Originally Posted by edman007
when its the PSU you will know it, most PSUs will refuse to start again after an overload, and the whole system shuts off, if its some other part generally you just fail POST or crash somewhere in the boot and reboot or something

My guess is your hitting the limit of the CPU at that voltage or the RAM is giving out on you, so first try changing the RAM to FSB ratio and/or loosening the timing, the next option would be to try boosting the voltage of the CPU a bit (that is required for any large overclock).

Then looking at the motherboard it does not seem to be that great at overclocking itself, when you overclock the FSB to boost the CPU it will also overclock at least the north bridge, and if you go for a big overclock your motherboard better have some big heatsinks, and i see mixed reviews on newegg about that. From the pics the heatsink looks pretty small and aluminum, compare that to some of the more expensive boards with a large copper heatsink.


Thanks for the reply edman

I think you may be right about the motherboard because I have seen mixed reviews on overclocking it. Some say it does well and some say it doesn't. I know it shouldn't be able to overclock well seeing that it is a micro-atx. I just thought I would get a little farther than where I'm at now. Would setting my RAM timings back to default help though? I actually changed it to 4-4-4-12 before I even started trying to overclock my CPU. I have also messed with the fsb ratio linked and unlinked with same results. I did remember increasing the CPU voltage to 1.325 and it actually didn't make any difference. Any higher would cause my PC to just constantly reboot every 10 seconds. Now that's what seems to be a PSU problem overall from your info. I've been stuck at 2.8ghz from all the results. Anything higher would cause my motherboard to refuse the new settings and change it back to default or tell me to do it myself. My guess is that your right about the motherboard. Any recommendations on decent overclocking board that's non-sli/crossfire.

Reply With Quote
  #4  
Old July 22nd, 2009, 12:12 AM
anand4hosting anand4hosting is offline
Registered User
Dev Shed Newbie (0 - 499 posts)
 
Join Date: Apr 2009
Location: india
Posts: 65 anand4hosting Negative: is most likely a SPAMMER and a traitor to the cause. 
Time spent in forums: 11 h 19 m 49 sec
Reputation Power: 0
MySpace
Exclamation overclocking

can i know if you are using micro atx PSU which runs with dc power?? well you are trying to say after using a mini psu you can changed the v core voltage and clocking speed of the processor so it require more dc power in put which the mini psu cannot provide? so its getting re started>>? it the same you are trying to explain.well if you are increasing the clocking speed you need to give more cooling and you need to increase the fan speed..
Comments on this post
Cerberus2k7 disagrees: Thread is over a year old.

Reply With Quote
Reply

Viewing: Dev Shed ForumsComputer HardwareCPUs > Overclocking problems... PSU limitations?

Developer Shed Advertisers and Affiliates



Thread Tools  Search this Thread 
Search this Thread:

Advanced Search
Display Modes  Rate This Thread 
Rate This Thread:


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
View Your Warnings | New Posts | Latest News | Latest Threads | Shoutbox
Forum Jump

Forums: » Register « |  User CP |  Games |  Calendar |  Members |  FAQs |  Sitemap |  Support | 
  
 


Powered by: vBulletin Version 3.0.5
Copyright ©2000 - 2013, Jelsoft Enterprises Ltd.

© 2003-2013 by Developer Shed. All rights reserved. DS Cluster - Follow our Sitemap