Ad
Related Topics
See all relatives topics
News

GPS can help give early warning of tsunamis

Published on June 30, 2006

Using GPS (global positioning system) data to measure how points on land move following an undersea earthquake could help geologists decide if the tremor will cause an ocean-wide tsunami. Read more

MIT researchers developing a quarter-sized turbine engine

Published on September 20, 2006

MIT researchers have started putting entire gas-turbine engines on tiny silicon chips. With the help of some military funding, researchers have fashioned millimeter-sized compressors, combustion chambers and turbines and placed them on layers of silicon wafers. Read more

PhD Student Makes World's "Most Advanced" Walking Robot

Published on May 23, 2008

Delft (Netherlands) - A PhD student at the Delft University of Technology in the Netherlands has constructed what he says is the world's most advanced walking biped robot. Read more

Intel Fine Tunes Processor Pricing, Increases Pressure On AMD

Published on July 22, 2008

Santa Clara (CA) - Intel's latest round of processor price represents a very subtle adjustment of prices the market widely seems to have accepted. Read more

Latest Reviews & Articles
Intel's Core i7: Blazing Fast, But Crippled O/C

Intel's Core i7: Blazing Fast, But Crippled O/C

Published on November 03, 2008

Core i7--previously referred to as Nehalem--requires new motherboards, coolers and memory. Its performance is compelling and means AMD is falling behind even further, but Intel is putting in some speed bumps that will impact overclocking enthusiasts. Read more

System Builder Marathon: Performance & Value

System Builder Marathon: Performance & Value

Published on October 31, 2008

Three dramatically different builds face off in a show of performance, defining the real value of each. Our mainstream system is designed to meet the needs of most users. Who should spend more and who can live with less? Read more

System Builder Marathon: $500 Gaming PC

System Builder Marathon: $500 Gaming PC

Published on October 30, 2008

For the second to last day of our System Builder Marathon series, we add a $500 gaming PC to the mix. It's not going to be as quick as our other two builds, but we think Paul was able to get some serious value from this thing. Read more

Tom's SBM: The $1,500 Mainstream PC

Tom's SBM: The $1,500 Mainstream PC

Published on October 29, 2008

We're following up yesterday's $4,500 behemoth with a more affordable $1,500 mid-range build. Let's see what sort of performance (and overclocking headroom) you can get when you spend one third of the money. Read more

All the Reviews & Articles
Related Content
  Tom's Hardware Forums » Overclocking » CPUs » E8400 Newbie OC'ing help!
 

E8400 Newbie OC'ing help!

Add a reply



Word :   Username :  
 
Bottom
Author
 Thread : E8400 Newbie OC'ing help!
 
doomsdaydave11
werd.
Profile: addict
More Information
n°1771615
08-20-2008 at 02:52:18 AM

Hello, I have an E8400 with a GA-EP35-DS3L (F5). The HSF is an Arctic Cooling Freezer 7 Pro with Arctic Silver 5. I have taken all the necessary precautions (turning off features such as C1E). I tried running a micro overclock of 350x9 (3.15 GHz) stock voltages and Windows booted fine, prime95 stable, etc. I tried running 400x9 and normal voltages, and XP would not boot. I turned up the voltages slightly until I got to 1.30v, which seems like way too much. And even at that voltage, prime95 fails after 1 minute. When I open up CPU-Z it tells me that the CPU is running at 1.264v... why? When I go into the Memory tab of CPU-Z, it tells me my RAM is running at 480 Mhz? Why? Shouldn't it be running at 400, as the FSB is 400? What am I doing wrong?

Message quoted 1 times
Message edited by doomsdaydave11 on 08-20-2008 at 02:55:26 AM

---------------
"Engineers, close in and shoot those kraut bastards in the face!"
E8400 @ 3.6GHz (9x400FSB 1.32v)|4GB|HD4870
Related Product

Register or log in to remove.
doomsdaydave11
werd.
Profile: addict
More Information
n°1771619
08-20-2008 at 03:13:02 AM

I've tweaked it a bit, here is my validator:
http://valid.x86-secret.com/show_oc.php?id=405898
Is there anything that I should/shouldn't have done?


---------------
"Engineers, close in and shoot those kraut bastards in the face!"
E8400 @ 3.6GHz (9x400FSB 1.32v)|4GB|HD4870
RyanS2000
"I'll take my taste" - Paulie Walnuts
Profile: member
More Information
n°1771637
08-20-2008 at 07:53:39 AM

doomsdaydave11 wrote :

Hello, I have an E8400 with a GA-EP35-DS3L (F5). The HSF is an Arctic Cooling Freezer 7 Pro with Arctic Silver 5. I have taken all the necessary precautions (turning off features such as C1E). I tried running a micro overclock of 350x9 (3.15 GHz) stock voltages and Windows booted fine, prime95 stable, etc. I tried running 400x9 and normal voltages, and XP would not boot. I turned up the voltages slightly until I got to 1.30v, which seems like way too much. And even at that voltage, prime95 fails after 1 minute. When I open up CPU-Z it tells me that the CPU is running at 1.264v... why? When I go into the Memory tab of CPU-Z, it tells me my RAM is running at 480 Mhz? Why? Shouldn't it be running at 400, as the FSB is 400? What am I doing wrong?



Turn off C1E and EIST. All chips are different but most people have no problem running 3.60 ghz without an increase in voltage. I run the same mobo and CPU as you and didn't have any issues with that OC. Try changing your memory multiplier to 2.0 (it is 2.2 by default)

As for your voltages not matching (BIOS vs CPU-Z), this is normal. Your voltage in CPU-Z will always be less than what you set in BIOS. You want to be sure that your voltage @ load stays below intels specification of 1.3625. Idle will be a higher voltage but as I was informed, since there isn't much current flow while idle it isn't an issue if this goes slightly higher than intels stated max.

Message quoted 1 times
Message edited by RyanS2000 on 08-20-2008 at 07:59:16 AM

---------------
Gigabyte GA-P35-DS3L | Intel E8400 @ 4.0GHz w\ Sunbeam Core Contact Freezer | Cooler Master CAC-T05-UW | OCZ Reaper HPC Edition 4GB PC6400 (2 x 2GB) | eVGA 8800 GTS (G92) 512MB | Corsair CMPSU-650TX 650Watt | Seagate Barracuda 7200.10 (SATA) 160GB & 500GB
lasttarget
Profile: member
More Information
n°1771640
08-20-2008 at 08:18:45 AM

I have mine at 1.275v @ 3.6 ghz

doomsdaydave11
werd.
Profile: addict
More Information
n°1771656
08-20-2008 at 09:30:20 AM

RyanS2000 wrote :

Turn off C1E and EIST. All chips are different but most people have no problem running 3.60 ghz without an increase in voltage. I run the same mobo and CPU as you and didn't have any issues with that OC. Try changing your memory multiplier to 2.0 (it is 2.2 by default)

As for your voltages not matching (BIOS vs CPU-Z), this is normal. Your voltage in CPU-Z will always be less than what you set in BIOS. You want to be sure that your voltage @ load stays below intels specification of 1.3625. Idle will be a higher voltage but as I was informed, since there isn't much current flow while idle it isn't an issue if this goes slightly higher than intels stated max.


Here are all my settings. These will not boot, and the only thing i change to make it boot is turn the voltage up to 1.3v, and even then its not stable.
Motherboard Intelligent Tweaker:
http://img513.imageshack.us/img513/5821/img0833nv1.jpg
http://img508.imageshack.us/img508/2953/img0834ut6.jpg

PC Health Status:
http://img242.imageshack.us/img242/4647/img0835af1.jpg

PnP/PCI Config:
http://img242.imageshack.us/img242/3900/img0836ef5.jpg

Power Management:
http://img508.imageshack.us/img508/3753/img0837ye1.jpg

Integrated Peripherals:
http://img171.imageshack.us/img171/763/img0838md5.jpg

Advanced BIOS Features:
http://img171.imageshack.us/img171/9958/img0839ht5.jpg

Standard CMOS Features:
http://img247.imageshack.us/img247/843/img0840rm2.jpg

Message quoted 1 times

---------------
"Engineers, close in and shoot those kraut bastards in the face!"
E8400 @ 3.6GHz (9x400FSB 1.32v)|4GB|HD4870
RyanS2000
"I'll take my taste" - Paulie Walnuts
Profile: member
More Information
n°1771696
08-20-2008 at 05:42:52 PM

doomsdaydave11 wrote :

Here are all my settings. These will not boot, and the only thing i change to make it boot is turn the voltage up to 1.3v, and even then its not stable.
...



Everything looks pretty much run of the mill as far as your settings go. A 1.30 BIOS vcore isn't all that high, why are you so reluctant to keep it at what allows you to boot. My E8400 is running at 4.0ghz with a BIOS vcore of 1.3750. What do your temperatures look like?

Message quoted 1 times

---------------
Gigabyte GA-P35-DS3L | Intel E8400 @ 4.0GHz w\ Sunbeam Core Contact Freezer | Cooler Master CAC-T05-UW | OCZ Reaper HPC Edition 4GB PC6400 (2 x 2GB) | eVGA 8800 GTS (G92) 512MB | Corsair CMPSU-650TX 650Watt | Seagate Barracuda 7200.10 (SATA) 160GB & 500GB
doomsdaydave11
werd.
Profile: addict
More Information
n°1771716
08-20-2008 at 08:14:51 PM

RyanS2000 wrote :

Everything looks pretty much run of the mill as far as your settings go. A 1.30 BIOS vcore isn't all that high, why are you so reluctant to keep it at what allows you to boot. My E8400 is running at 4.0ghz with a BIOS vcore of 1.3750. What do your temperatures look like?


I just really want to be careful :)

Everyone seems to be able to run their chips at 3.6 stock without too much trouble. My temps at 1.30v are about 34 Idle and 47 load. I'll turn the vcore up to 1.3250v

Message quoted 1 times

---------------
"Engineers, close in and shoot those kraut bastards in the face!"
E8400 @ 3.6GHz (9x400FSB 1.32v)|4GB|HD4870
RyanS2000
"I'll take my taste" - Paulie Walnuts
Profile: member
More Information
n°1771834
08-21-2008 at 04:29:49 PM

doomsdaydave11 wrote :

I just really want to be careful :)

Everyone seems to be able to run their chips at 3.6 stock without too much trouble. My temps at 1.30v are about 34 Idle and 47 load. I'll turn the vcore up to 1.3250v



1.3250v BIOS voltage is still super low. If you look at your voltage in CPU-Z under load or idle, you will see it is still well below intels spec. After setting it to 1.3250 in BIOS, hit F10 to save changes then boot back into BIOS and look at Health Status. Your CPU voltage should be still in a safe spot.


Message edited by RyanS2000 on 08-21-2008 at 04:30:20 PM

---------------
Gigabyte GA-P35-DS3L | Intel E8400 @ 4.0GHz w\ Sunbeam Core Contact Freezer | Cooler Master CAC-T05-UW | OCZ Reaper HPC Edition 4GB PC6400 (2 x 2GB) | eVGA 8800 GTS (G92) 512MB | Corsair CMPSU-650TX 650Watt | Seagate Barracuda 7200.10 (SATA) 160GB & 500GB

  Tom's Hardware Forums » Overclocking » CPUs » E8400 Newbie OC'ing help!

Go to:
Add a reply
 

Forum map
MyDiscussions.Net Forum, Version 2007.1
© 2000-2006 No1Dev
Page generated in 0.289 seconds
Google Ads