If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Asus P4C800 - Deluxe What is the highest Voltage I can run the vCore at Safely?
I am running a P42.80c CPU on a Asus P4C800 Deluxe.
I want to know what the highest voltage is, that I can run it at safely?..When I run it at stock voltage with a 235FSB, 5:4 divider the system will run just fine..I can run Prime95 and memtest86 all day without a problem,but when I am just sitting in windows with my browser open, and doing nothing special the system will reboot after a long time running.. The temp of the CPU is cold, at 28c so,I would not think the teperature could be the problem.. I also have a very high end PSU, Kingwin 450w, so I dont think the PSU could be my problem.. So I was thinking that it might be the CPU voltage that is causeing the reboots..Maybe I need to up the voltage? So the question is,what is the highest voltage I can safely use with a P42.80c? And could the V core voltage being to low for the speed I am running my FSB at "235", cause my rebooting problem? Thanks in advance System : Asus P4C800 - Deluxe Pentium 4 2.80c Zelman CNPS7000-Cu Mushkin PC 3500 Level II / 512x2 Radeon 9800 Pro SB Audigy 2 |
#2
|
|||
|
|||
So the question is,what is the highest voltage I can safely use with a
P42.80c? Why not try it? Small increases won't hurt. On my system increasing voltage doesn't make my system more stable, I think it's because my PSU is not up to the task. I wouldn't go above 1.65 though. I prefer to run it normally clocked with PAT - overclocking automatically disables PAT, which sucks, because it improves memory throughput by nearly 1 GB/sec! And that is "free" performance increase which is not stressing my CPU at all or causing instability, so I'm very happy with it. |
#3
|
|||
|
|||
In article , "Darkfalz"
wrote: So the question is,what is the highest voltage I can safely use with a P42.80c? Why not try it? Small increases won't hurt. On my system increasing voltage doesn't make my system more stable, I think it's because my PSU is not up to the task. I wouldn't go above 1.65 though. I prefer to run it normally clocked with PAT - overclocking automatically disables PAT, which sucks, because it improves memory throughput by nearly 1 GB/sec! And that is "free" performance increase which is not stressing my CPU at all or causing instability, so I'm very happy with it. ftp://download.intel.com/design/Pent...s/29864311.pdf (pg.23) " Table 2-5. Processor DC Absolute Maximum Ratings Symbol Parameter Min Max Unit Notes TSTORAGE Processor storage temperature *40 85 °C 2 VCC Any processor supply voltage with respect to VSS *0.3 1.75 V 1 VinAGTL+ AGTL+ buffer DC input voltage with respect to VSS *0.1 1.75 V VinAsynch_GTL+ Asynch GTL+ buffer DC input voltage with respect to VSS *0.1 1.75 V IVID Max VID pin current 5 mA NOTES: 1. This rating applies to any processor pin. 2. Contact Intel for storage requirements in excess of one year. " So, it looks like 1.75 is the absolute maximum you can use. For safety I wouldn't go that far. 1.67V is the highest voltage used in the 19 entries for the 2.8C on http://www.cpudatabase.com/CPUdb HTH, Paul |
#4
|
|||
|
|||
"Paul" wrote in message ... In article , "Darkfalz" wrote: So the question is,what is the highest voltage I can safely use with a P42.80c? Why not try it? Small increases won't hurt. On my system increasing voltage doesn't make my system more stable, I think it's because my PSU is not up to the task. I wouldn't go above 1.65 though. I prefer to run it normally clocked with PAT - overclocking automatically disables PAT, which sucks, because it improves memory throughput by nearly 1 GB/sec! And that is "free" performance increase which is not stressing my CPU at all or causing instability, so I'm very happy with it. ftp://download.intel.com/design/Pent...s/29864311.pdf (pg.23) " Table 2-5. Processor DC Absolute Maximum Ratings Symbol Parameter Min Max Unit Notes TSTORAGE Processor storage temperature *40 85 °C 2 VCC Any processor supply voltage with respect to VSS *0.3 1.75 V 1 VinAGTL+ AGTL+ buffer DC input voltage with respect to VSS *0.1 1.75 V VinAsynch_GTL+ Asynch GTL+ buffer DC input voltage with respect to VSS *0.1 1.75 V IVID Max VID pin current 5 mA NOTES: 1. This rating applies to any processor pin. 2. Contact Intel for storage requirements in excess of one year. " So, it looks like 1.75 is the absolute maximum you can use. For safety I wouldn't go that far. 1.67V is the highest voltage used in the 19 entries for the 2.8C on http://www.cpudatabase.com/CPUdb HTH, Paul Thanks Paul & Darkfalz, very useful information By the way,PAT is still enabled. I seemed to have found stability at 1.568 v So far,no rebooting.. Ran it all day yesterday without a problem.. As long as the temp is below spec. "Right now at 30c at idle /40c at full load". Are you safe increasing voltage and FSB? thanks |
#5
|
|||
|
|||
Thanks Paul & Darkfalz, very useful information
By the way,PAT is still enabled. Are you basing that on your BIOS setting or something like Aida32 telling you PAT is Enabled? Are you safe increasing voltage and FSB? thanks Increasing FSB is always safe if you are stable, voltage is the only thing to worry about, but remember that they are designed to cope with variances in voltages due to different loads and power supples, so upping it slightly wouldn't be a problem at all. Mine which is set to 1.55 varies in the monitor from 1.50 to 1.57. |
#6
|
|||
|
|||
"Darkfalz" wrote in message ... Thanks Paul & Darkfalz, very useful information By the way,PAT is still enabled. Are you basing that on your BIOS setting or something like Aida32 telling you PAT is Enabled? Actually I am basing that on a program called CPU- Z Are you safe increasing voltage and FSB? thanks Increasing FSB is always safe if you are stable, voltage is the only thing to worry about, but remember that they are designed to cope with variances in voltages due to different loads and power supples, so upping it slightly wouldn't be a problem at all. Mine which is set to 1.55 varies in the monitor from 1.50 to 1.57. |
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Asus A7N8X-E Deluxe OR GIGABYTE GA-7N400 PRO2 ? | simon_c | Homebuilt PC's | 5 | January 30th 04 08:30 PM |
Windows halts at load screen - Athlon64 3000+ & Asus K8V Deluxe | MiMMiC | Homebuilt PC's | 8 | January 9th 04 12:26 PM |
Asus P4C800 Deluxe - PATA RAID on only one cable? | Noozer | General | 14 | December 22nd 03 05:57 AM |
ASUS P4C800-E DELUXE vs. Gigabyte GA-8KNXP | DJ | Asus Motherboards | 1 | July 28th 03 08:28 PM |
What is the best setting in BIOS on P4C800 Deluxe? | Falcon© [2635] | Asus Motherboards | 0 | July 13th 03 11:08 PM |