My new p4 2.4c@3.5ghz oddity on Abit IC7 ( non G or max3 )...take a look gives some theories...

[Duvie]

OK...here is the situation....

2.4c@3.5 (292fsb) on IC7 (bios version 14&18)
Swiftech MCX4000 with AS2 ans 92mm Panaflo (58cfm) 3 case fans...


1.65v bios set(1.6v actual)

Bios reports 52c after sitting for several minutes at idle....I go into windows and let it sit and it will settle down to the mid 40's...What is up with that. I am running bios version 18 but noticed similar discrepancies with bios version 14.

So 45-46c idle and then I start 2x prime95...I will only get about 3-4 minutes into it on one and maybe 13-15minutes on the other...rounding error...Load temp will peak with case on and window closed at 66-67c....63-64 with blowing way but same end results of errors...

If I open window and let some of that 40-45f weather come in then I see no greater then 59.5-60c with sucking and now only 56.50 with blowing results????? Last night I went the whole night no prime error, and right now I am agin 3hours into it with no errors...Weird huh???

I used same AS2 but with the consistency that I mentined..."bottom of the barrel" stuff....on the NB chipset.

temps on the PWM are also down with window cracked and case open so it may be that as well. System temp is alos down a few degrees right now loading...



Bios 14 is best for me to get my geils to their maximum cpabilities but prim95 will crash fast. I upgraded to bios 18 and same sped and vcore went 2 hours before I stoppe it. That was at 3.38ghz but vcore was default still and temps loaded with system closed was only 60-60.5c loaded....


Bios 14 problem happens around 250 with this board and I think similar to what I saw with my 2.6c in there though I couldn't definitely state that cause I was clos to the limit of the chip.

Downside is that with the bios 18 I can not run 5:4 with my geil pc3500 even at 280fsb with 2.8v and cas 3,8,4,4 when it previously ran memtested and prime stable at 466ddr for 8 hours each...No matter vcore, vdimm, or vagp will get it to boot....Another oddity


Next thing is the vddq voltage is nice and high (I guess what high is for this board) 1.38-1.39v when have the agp set to 1.6v and the cpu is around 3.4ghz or less....When I bump it to 3.5ghz it runs 1.3-1.33 range...I then up the vagp and it goes back to 1.39 range...You know anything about this reading???

Voltage rails are still tight to good and show no difference in testig above so I have ruled them out excpet for the VDDQ oddity. Naturally the Abit Ic7 undervolts a lot of things on this board and that is the one case where the bios and the windows environment report the same thing.

vcore = 1.65 bios = 1.60idle 1.58-1.57 load
vdimm=2.8v bios = 2.78-2.8 idle same as load
vagp=165v bios = 1.63idle 1.62v load
vagp=1.6v bios 1.58v idle and 1.57 load

+3.3v = 3.32idle 3.28load
+5v= 5.08idle 5.04load
+12v=11.94vidle 11.8load




Theories:

1) I have a cpu or chipset heating issue that I need to resolve. I think my AS2 is bad as it jas run out and the consistency of the stuff in the bottom of the tube looked either runny or a bit more tacky then normal AS2 I have epxerienced over the last 2 years...Opps maybe that is a bit long for the shelf life!!!

I will be apply new AS5 as soon as it arrives.

I know the hsf is applied right as I got same results with alpha and swiftech on my 2.6c....again they had high cpu and pwm temps.


2) bios issue of reported temp in bios and monitoring program. I amy actually be running higher then reported by 3 different programs. results is when I see 63-64 I could likely be in the 70's and hence the sumout error and rounding errors...

 

[THUGSROOK]

how far can you get on default?
how far can you get on 1.55v?
how far can you get on 1.575v?
how far can you get on 1.6v?
how far can you get on 1.625v?
(you see where im going here)

if you were stable last night, but not today, thats called burn out.
where you actually lose OCability by 1 or 2fsb. (its normal)

HTH

 

[Duvie]

Originally posted by: THUGSROOK
how far can you get on default?
how far can you get on 1.55v?
how far can you get on 1.575v?
how far can you get on 1.6v?
how far can you get on 1.625v?
(you see where im going here)

if you were stable last night, but not today, thats called burn out.
where you actually lose OCability by 1 or 2fsb. (its normal)

HTH

NO you got me wrong....

I say right now and last night if I run with case closed it will fail prime95 in minutes...If I open case and lower cpu temps to 60 or below I run for hours....

I did it last night and right now I am confirming it again..So far 3 hours into prime95 with no errors...Cpu temp is 58c, PWM is 36c and system temp is 24c...cas closed just before this current test and I failed in 3 minutes on one of the prime95 programs and 14 minutes under the other.

There is not loss of oc....


As for your first set off questions don't know for sure and most results are in question since as soon as I give it vcore the temps get intot he 60's rather quick....

I know 3.396ghz did prime95 (at default) for 2-3 hours before I stoppes it and did a 3 hour tmpgenc encoding just fine. Temps in Tmpgenc rarely get as high as prime95 maybe about 3-4c less on average...

 

[THUGSROOK]

ah ok, ic what ya mean.
my temps max out higher then yours.
im running p95 right now to get temps for you..................................(30 mins later)

CPU = 62.5*C
SYS = 32*C
PWM = 46.5*C

HTH

 

[THUGSROOK]

voltages: idle / load

CPU: 1.575v / 1.57v
DDR: 2.78-2.8v / 2.78-2.82v
3.3v: 3.3v / 3.26-3.28v
5v: 5.0-5.03v / 5.0-5.03v
12v: 11.8v / 11.62-11.68v
VDDQ: 1.38-1.39v / 1.38-1.39v
VTT: 1.54v / 1.54v
5vSB: 4.97v / 4.95v

chances are ~ you need a blowhole exaust

 

[Duvie]

I have seen 67c!!!....Do you have same large temp difference between the bios and reported windows environment???

You don't have hT enabled and that is supposed to add heat...What fan are you using with your swiftech???

prime95 still going andnow I have closed the window and temps are hovering around 61c with no error yet....

 

[Duvie]

Originally posted by: THUGSROOK
voltages: idle / load

CPU: 1.575v / 1.57v
DDR: 2.78-2.8v / 2.78-2.82v
3.3v: 3.3v / 3.26-3.28v
5v: 5.0-5.03v / 5.0-5.03v
12v: 11.8v / 11.62-11.68v
VDDQ: 1.38-1.39v / 1.38-1.39v
VTT: 1.54v / 1.54v
5vSB: 4.97v / 4.95v

chances are ~ you need a blowhole exaust

New chemming case for Xmas, I think that will help case flow overall....


I honestly have not tried less then 1.6v at this speed...I tink I will to see if it still stays stable and try to drop cpu temp...It does go up proportionally to vcore..no surprise to you!!!

 

[THUGSROOK]

i never bother to check BIOS reading. its kinda pointless.
2.4b chips dont have HT.
92mm panaflo M1A.
my room temp is 76*F

temps go up very quickly once you start adding vcore.
here's an example under p95:

@ 133fsb 1.525v PWM = 38.0*C
@ 167fsb 1.525v PWM = 39.0*C
@ 187fsb 1.525v PWM = 40.5*C
@ 190fsb 1.575v PWM = 44.5*C

going from stock to max speed on def vcore only raises PWM temp 2.5*C.
going an extra 3fsb and +.05 vcore adds another 4*C!

 

[Duvie]

I forgot...I was thinking about your 2.4c you had briefly.....


I don't see why the bios is pointless since they both or all should be reading from same point...If anything the bios should be running cooler since all it is running is the bios environment...


What is the PWM temp Thugs??? I have heard NB chipset to some spot on the mobo unrelated to it....

 

[Duvie]

Thugs you have same fan as me but didn't you say you voltage mod it to actually run it slower??? I am running at its max rpm and therefore dbs and cfm.....You said you were going for that quiet PC???

 

[Technonut]

PWM= Pulse Width Modulation. The temp is taken from the MOSFETS.

 

[THUGSROOK]

yep,
PWM = mosfets
SYS = case temp

there is no NB temp on i865/75 boards

my cpu fan runs full speed under full load.
my 2x 120mm M1A case fans run 7v at all times.
my 2x 80mm L1A case fans run 12v at all times.

by the time you go from windows to bios (or back) temps can change.
i have no interest what-so-ever in what the bios says.

 

[Duvie]

I see...Thanks Techonut....


Wow thugs how can that system be quite with that many fans and those big 120's??? My new case will have 4 so called ultra quiet 80mm fans witha fully adjustable control panel for them to adjust....

Still going!!! I think I am going to top it at 6hours and actually do some more application testing and maybe then drop the vcore and test some more....

AS5 where are you...I saw a few get a few degrees better with the AS5 over AS3 so I hope maybe I am getting a bad thermal transfer....

Window is closed now and my temps are at 61-61.5 with no errors....side still off...I may put it on and see if it errors out quickly and that me a nice definitive answer there, huh???

 

[THUGSROOK]

the 80mm L1As are silent
the 120mm M1As in 7v mode are silent
the only fan i can hear is the 92mm M1A cpu fan (in a perfectly quiet room)
i can hear my HD hammering easily.

yes the AS5 should do slightly better then AS3, but remember to keep it thin. very thin. extremely thin!

put the side panel on and see if it crashes ~ 3.4ghz aint nothing to sneeze at

 

[myocardia]

If you really want/need to have the side panel on (kids, pets, etc.), do like I did, and install an 80mm fan, blowing in, on the left-side panel, directly over the hsf. My temps dropped 10C under load after I added the fan. My Athlon 2400 only runs mid 40's celsius, when it's running 1.8v @ 2400 Mhz, and that's with a Thermaltake X-Dream hsf, not a Thermalright or a Zalman! Of course, I have so much case airflow (2x120mm, full speed +the 80mm, full speed) that most hovercraft get jealous...

 

[orion7144]

Originally posted by: Duvie
I have seen 67c!!!....Do you have same large temp difference between the bios and reported windows environment???

You don't have hT enabled and that is supposed to add heat...What fan are you using with your swiftech???

prime95 still going andnow I have closed the window and temps are hovering around 61c with no error yet....

Don't forget that the Abit boards read high.... I put a temp probe on mine since I was constanly hitting 60C+ and it was 7C less. hardware DR read 58 and the temp probe was 51 at full load for 3hrs with two instances of F@H running.

 

[Duvie]

Ok ppl....

As for side case fan...Like I said I have a new chemming case for Xmas and it has a side fan....


Also while I know abits read higher then others the ABSOLUTE FACT remains if the temp being reported by hardware monitor, which is the same as speedfan hits 64-65 ish it will error in prime95....Otherwise I run all day!!!

Side note ppl!!! I actually dropped vcore .025 and then for the last 4 hours I have ripped DVD2avi and then now encoding a movie and all seems perfectly stable....Got about 2-3 hours more to go with the rest of the 2pass encoding and then ifoedit authoring a dvd...

IN the past DVD2AVI or tmpgenc will error out...


I think it is heat and I will just have to hope the AS5 (which did come) will help and that the AS2 I was usuing is pretty crappy and maybe I can keep high temps below 60...Window has been closed and case door has been shut and I am seeing only 61c in tmpgenc but like I said it usually gets 3-4c less the prime95....

 

[oldfart]

If your temps get to ~ 70C you will throttle and Prime will bomb. You have more cooling than I do. I have an MCX4000 with an 80mm M1A. I have (1) 80mm L1A case fan as exhaust and no intake. An L1A @ full RPM is pretty loud. I run it @ 60% and the CPU M1A @ 70% during low load (Speedfan controlled). This is close to silent. Once CPU temp hits 50C, they both go to 100%. The noise difference between 60% and 100% is very large on the L1A case fan, much less so on the M1A CPU fan. The HS baffles the noise quite a bit more it seems.

Again, you have more cooling, but more MHz too. Keeping your case open fixes it, as does a lower Vcore so the problem is obvious. A little too much heat. I'm looking to try a side intake port (not fan). I saw This Setup on another post that looks great. Anyone know who makes it?

 

[Duvie]

Well TMPGenc made it through the night with a 6+ hour encoding of The Two Towers with VBR 2pass and high quality motion detection. Starting prime95 as we speak...

By the way this is 2.4c@3.5ghz(292) with 1.58v actual (loads to 1.56v)


Also I backed it down to 267fsb to oc this 2.4c to 3.2ghz to run some comparison benches against my 2.4b@3.2ghz and my 2.c@3.2ghz and I still cannot get 5:4 to boot...eventhough I give it much higher vcore, most relaxed timings this board will offer and all at a speed I had ran much higher before with a 1:1 ratio...


This bios 18 seems to be te culprit but bios 14 seems to be more unstable so it is a double edge sword here....

 

[oldfart]

Originally posted by: Duvie
Well TMPGenc made it through the night with a 6+ hour encoding of The Two Towers with VBR 2pass and high quality motion detection. Starting prime95 as we speak...

By the way this is 2.4c@3.5ghz(292) with 1.58v actual (loads to 1.56v)


Also I backed it down to 267fsb to oc this 2.4c to 3.2ghz to run some comparison benches against my 2.4b@3.2ghz and my 2.c@3.2ghz and I still cannot get 5:4 to boot...eventhough I give it much higher vcore, most relaxed timings this board will offer and all at a speed I had ran much higher before with a 1:1 ratio...


This bios 18 seems to be te culprit but bios 14 seems to be more unstable so it is a double edge sword here....

Is that ram CH5 based? IC7 has a well known issue with CH5 above 255 FSB. Are all GAT options set to auto?

 

[Duvie]

They are geil pc3500 Ulra PLatinums..You've got me!!!

I have all GAT set to auto except the last 2 that are disabled....

 

[oldfart]

Does 5:4 work @ 254 FSB?

 

[Duvie]

Yes it does!!!

254 = boots (cas 2,7,3,3)
256 = boots (cas 2,7,3,3)
258 = boots (cas 2,7,3,3)
260 = boots (cas 2,7,3,3)
262 = boots (cas 2,7,3,3) doesn't make splash screen
262 = boots (cas 2.5,8,3,3) windows loads!!! desktop freezes!!!
262 = boots (cas 3,8,4,4) windows loads!!! desktop goes futher then freezes

All were tested with 2.8v, Gat disabled last 2, and vcore set to 1.625v for 1.58v actual...plenty of vcore for the speed....

 

[THUGSROOK]

get some BH5 ram

 

[oldfart]

It does seem the mobo does not like your ram past ~ 260 FSB. 3:2 does the same thing?