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Archived from groups: alt.comp.hardware.overclocking.amd (More info?)
Hi,
I have a question.
Motherboard is A7N8X-E Deluxe, RAM is 2x512PC3200 Samsung
My new CPU, unlocked XP3000+ (AQXCA 0410), runs many 6h prime95
sessions @2200Mhz (11x200) 1,675v without a problem, but if I try say
2250Mhz(11,5*195) even with 1,850v prime95 reports errors, or crash in
the minute.
2220Mhz or 2214Mhz crash in the 15 minutes.
And for what I know about 'oc, the limit is not as brutal as what I see
with this one
I started to look more closer of the voltages an log in MMB5.
It reports for my 5v a min value of 4,81v.
Okay, MMB say.... Where is my multimeter ?
Put a multimeter on the +5v direct on the motherboard connector (the
grey one)
I run OCCT @2200Mhz (a quick stability test for 'oc).
It monitors all sensors for 1mn at idle, then makes a 25mn burning,
and then monitors all sensors at idle again for 4mn. After that it
makes graphs.
I notice a great loss on the 5v during the burning time to 4,82 (It's
MMB which collects data for OCCT).
While the test, I had some looks at the multimeter. It starts at 4,93
and drop to 4,88 for all the burn time, the goes up to 4,92.
Here are the MMB5 results
(nb : shown 4,82v on the graph when was 4,88v on the multimeter)
http://perso.wanadoo.fr/danoba/OCCT/volt5.gif
the others are good
http://perso.wanadoo.fr/danoba/OCCT/volt12.gif
http://perso.wanadoo.fr/danoba/OCCT/volt3.gif
http://perso.wanadoo.fr/danoba/OCCT/voltcore.gif
http://perso.wanadoo.fr/danoba/OCCT/cpugraph.gif
For sure, my PSU (cheap 460W) is'nt stable enought.
But while in burning, I'd take a look at the others 5v (molex, others
on the main connector) with the multimeter they all stay at 5,03v. I
assume that these ones are not drawn from the same part of the PSU.
Could it be a good/bad idea to take a +5v on a free molex and "Y" it to
the gray pin of the mainboard connector in order to get some bonus Amps
?
Some other results with the multimeter
@2200 Mhz Idle = 4,91v
Running prime95 = 4,86v
Let's see if I lower Mhz. Going to 100x11
@1100 Mhz Idle = 4,95v
Running prime95 = 4,93v
--
Alni
Hi,
I have a question.
Motherboard is A7N8X-E Deluxe, RAM is 2x512PC3200 Samsung
My new CPU, unlocked XP3000+ (AQXCA 0410), runs many 6h prime95
sessions @2200Mhz (11x200) 1,675v without a problem, but if I try say
2250Mhz(11,5*195) even with 1,850v prime95 reports errors, or crash in
the minute.
2220Mhz or 2214Mhz crash in the 15 minutes.
And for what I know about 'oc, the limit is not as brutal as what I see
with this one
I started to look more closer of the voltages an log in MMB5.
It reports for my 5v a min value of 4,81v.
Okay, MMB say.... Where is my multimeter ?
Put a multimeter on the +5v direct on the motherboard connector (the
grey one)
I run OCCT @2200Mhz (a quick stability test for 'oc).
It monitors all sensors for 1mn at idle, then makes a 25mn burning,
and then monitors all sensors at idle again for 4mn. After that it
makes graphs.
I notice a great loss on the 5v during the burning time to 4,82 (It's
MMB which collects data for OCCT).
While the test, I had some looks at the multimeter. It starts at 4,93
and drop to 4,88 for all the burn time, the goes up to 4,92.
Here are the MMB5 results
(nb : shown 4,82v on the graph when was 4,88v on the multimeter)
http://perso.wanadoo.fr/danoba/OCCT/volt5.gif
the others are good
http://perso.wanadoo.fr/danoba/OCCT/volt12.gif
http://perso.wanadoo.fr/danoba/OCCT/volt3.gif
http://perso.wanadoo.fr/danoba/OCCT/voltcore.gif
http://perso.wanadoo.fr/danoba/OCCT/cpugraph.gif
For sure, my PSU (cheap 460W) is'nt stable enought.
But while in burning, I'd take a look at the others 5v (molex, others
on the main connector) with the multimeter they all stay at 5,03v. I
assume that these ones are not drawn from the same part of the PSU.
Could it be a good/bad idea to take a +5v on a free molex and "Y" it to
the gray pin of the mainboard connector in order to get some bonus Amps
?
Some other results with the multimeter
@2200 Mhz Idle = 4,91v
Running prime95 = 4,86v
Let's see if I lower Mhz. Going to 100x11
@1100 Mhz Idle = 4,95v
Running prime95 = 4,93v
--
Alni