Overclocked my Retail E8400 - WOW!

[aigomorla]

Originally posted by: jaredpace

Originally posted by: myocardia

Originally posted by: vaylon
x2 3800 oc'ed to 2.76 on asrock939dualsata2 3 gb ddr, xp-sp2
super pi 1mb is x2= 22 sec

Liar.

E8400 oc'ed to 4ghz on a GA-P35, 4 gb ddr2, xp-sp2
E8400= 17 sec

Liar.

PWNT. x2 would be like 40 secs and e8400 would be like 11

ummm thats one crappy ass E8400.

My E6600 did 1m in 14.4sec.
http://i125.photobucket.com/al...igomorla/FinalTemp.jpg

4.0ghz is close to 10sec. Not quiet breaking it. 4.2 with tight memory timings might break sub 10sec.

 

[vaylon]

Ok DUDE,

Here's a grab of the x2 I just did.

pic

Also pay attention to the core usage. Only one core was used.
Affinity was 2 and set priority to high and real time.


Usage on the cpu hardly ever goes above 51% , regardless of the program that runs.

I did see it go 100% when I ran the calculation thing larry said to test, but only when I ran two instances of the program at once. Otherwise it stays 51%. Which I am guessing is making use of just one core or Taskmanager is just not reading it right.

Before I crashed a couple of weeks ago and had to reinstall everything, it still ran pi in under 30 seconds.

The slowest it has done lately is 25. The fastest was 20.

Your opty calcs are not good, even clocked that high. As for the e8400's I would have loved to gotten a score like that.

My scores on an opty 148 single core was 35-38 seconds.
As for a 40 second pi score? Get real. Maybe on somebody's system that just installed a cpu and didn't optimize it.

Here's the x2's cpuz pic with a little help from mother natures cold heart.
cpuz

My questions on the forums wasn't about my x2, I am very happy with the way its running now. But I want my E8400 to eat it alive.
And in the process I will learn all the in's and outs of intel processors. Just like I have done for years working on the amd systems.

My x2 system didn't come out of the box this way.
Every part of the system has been hacked and moded by watching and reading what others on the net have tried. The bio's is hacked, the cpu drivers are a hacked version of the AMD optimization drivers I got from a friend.

Now that I am a new recruit in the service of the "EMPIRE" I hope to be able to turn my new intel (EMPIRE) experiences into just as much fun.

When this thread started there wasn't many places on the net to get real life comparisons for these chips. Just your everyday websites reviews and benchmarks. But just in the past couple of days E8400 and E8500 stats are showing up all over, and there is a wide range in performance stats. Chipsets seem to have a huge impact on the performance of these chips, regardless of if you overclock or not.
and I know for sure my setup was really fouled up by something to do with the motherboard. And no it hadn't been hacked or modded.




Sorry for being long winded.

 

[djnsmith7]

This is my 1st OC ever!...I thought it would be so much harder than it was...All these years I thought you had to do a bunch of mathematical equations to get the results you wanted...

I don't know if it's just my MB (Maximus Formula) or what, but it was a hell of a lot easier to OC than I ever expected...

Anyway, onto the numbers...I got a 4.0 Ghz OC on Air (Zalman 9700 w/ AS5)...Vcore of 1.376...CPU is @ 28C...

How do I get CPU-Z & Everest to show the x9.0 (4.0 Ghz) number vs the x6.0 number (2663 Ghz)?...CPU-Z & Everest both show 2663 Ghz w/ x6.0 multiplier, when they should both be showing 4.0 Ghz...

I know my OC is working because my Bus Speed is 443.9 & Rated FSB is 1775.4...The correct speed shows up in the BIOS...Like I said, this is my 1st OC...Are they fixed at the slower speeds because they are Trial versions of the software?...

Another question...ASUS PC Probe II indicated my Northbridge is at 56C...How concerned should I be w/ that temp & how do I lower it?...

CPU-Z is v1.43

 

[myocardia]

Originally posted by: vaylon
Ok DUDE,

Here's a grab of the x2 I just did.

pic

Your "proof" is a screenshot with nothing at all on the screen except for the SuperPi run? Do you even know how to tell the truth?

Before I crashed a couple of weeks ago and had to reinstall everything, it still ran pi in under 30 seconds.

Just show us a screenshot from your X2 3800 running SuperPi.

The slowest it has done lately is 25. The fastest was 20.

You're obviously talking about the E8400 here, I assume? Yeah, it should be less than 20 seconds, at stock speeds.

Your opty calcs are not good, even clocked that high.

I've only seen one or two faster, below 2.9 Ghz. Why, you happen to own one that will do it in 5 or 6 seconds, I suppose?:roll:


edit: BTW, I forgot to give you the link for the version of SuperPi that everyone has been using for the last few years. If you say "my xxx processor can do SuperPi 1m in xx seconds", you need to be running this version.

 

[VirtualLarry]

Originally posted by: vaylon
Hey VirtualLarry, thanks for the idea.

Here are my 2 system scores.(cEM/SEC)

x2=3164660 cEM/SEC at 52% cpu usage on both cores. set affinity to 2 and priority to high
e8400= 3922160 cEM/SEC @ 90% cpu usage on one core the other seems to be running at half of the first. set affinity to 2 and affinity to high.

I tried changing them to real time but it didn't seem to make a difference.

Not sure what these mean but if you have a clue please let me know.


Heres the results from something unorthodox.

I ran 4 instances of the progy on each computer at the same time
these are the scores from each test

x2- 894768, 786104, 826246,2140778 = 4647896 CPU 100%

E8400- 1289418, 1227761, 971221, 899679 = 4388079 CPU 100%

That even makes me more confused

Those numbers look about right for an overclocked X2. They don't look nearly correct for the E8400. This rig, an E2200 at 280x11=3.1Ghz, it gets around 6Mcems/sec total.
Depending on the WU, my E2140s @ 3.2Ghz hit as high as 10Mcems/sec, and as low as 6Mcem/sec. They also hit 100% CPU usage using the service install for two instances. I don't know why yours weren't hitting 100% with only two instances.

Originally posted by: vaylon
also the matrix rip was from dvd disc drive.

Well no wonder the times were so similar. The time reading from teh DVD drive dominated the benchmarks.

 

[Tempered81]

vaylon, you say your expert oc'd X2 will do super pi at 25-20 seconds...

well a stock e8400 would do it at about 17-19 seconds. A 4.0ghz oc would do it in about 10-11. And the fastest ive seen is less than 8.0 seconds on an "expert oc'd" E8400

see if you can get your x2 into the 7 second range for SPi

 

[Xvys]

djnsmith7 wrote:

How do I get CPU-Z & Everest to show the x9.0 (4.0 Ghz) number vs the x6.0 number (2663 Ghz)?...CPU-Z & Everest both show 2663 Ghz w/ x6.0 multiplier, when they should both be showing 4.0 Ghz...

You probably have C1E/EIST or SpeedStep enabled in the bios, which automatically reduces the cpu multiplier to 6 to reduce idle temps. Put the cpu under load (i.e. Orthos or Prime95) and you should see the multipler and MHz jump up to 9 x 445 = 4000Ghz. Not sure about your NB temps, I don't have any program which reads my temp, but it wouldn't hurt to keep an eye on it, or perhaps putting a fan on the NB heatsink, ect.

 

[Tempered81]

xvys- didn't you say earlier that you replaced your first e8400, or your motherboard?

 

[djnsmith7]

Originally posted by: Xvys
djnsmith7 wrote:

How do I get CPU-Z & Everest to show the x9.0 (4.0 Ghz) number vs the x6.0 number (2663 Ghz)?...CPU-Z & Everest both show 2663 Ghz w/ x6.0 multiplier, when they should both be showing 4.0 Ghz...

You probably have C1E/EIST or SpeedStep enabled in the bios, which automatically reduces the cpu multiplier to 6 to reduce idle temps. Put the cpu under load (i.e. Orthos or Prime95) and you should see the multipler and MHz jump up to 9 x 445 = 4000Ghz. Not sure about your NB temps, I don't have any program which reads my temp, but it wouldn't hurt to keep an eye on it, or perhaps putting a fan on the NB heatsink, ect.

Disabling C1E & SpeedStep worked...Thx!

 

[Xvys]

xvys- didn't you say earlier that you replaced your first e8400, or your motherboard?

Yes, I took back my E8400 and exchanged it for a new one. My first one had 17C/34C core idle temps @ 4.0GHz. The new one (from the exact same batch) is 38/36C core idle @4.0GHz with all the exact same settings. Probably nothing wrong with the first one, but I feel better about having more realistic core temp readings. I think Intel has suggested E8400 owners should ignore these wonky core temps readings and concentrate on the cpu temp, which they recommend should not exceed 61.2C.

 

[Tempered81]

I thought the threshold was 72.4C? do you have a link to that 61.2C spec?

 

[Xvys]

Here is Packo's email to Intel posted in the OCForums E8400 overheating thread:
-------------------------------------------------------------------

I e-mailed Intel abut the sensor problems
Heres what intel said about senors problems, talk about a load.

First,
My e-mail, by the way I did copy and paste some info from this thread to get things started.

the temp probs in the E8400 are stuffed. The Coolest (the guy who
makes coretemp) reports that according to Intels spec, his program is
reading the temps correctly. In other words, coretemp is reading what
the cpu is telling it. Case and point, my E8400. According to
coretemp, one core is locked at 43c, the other at 51c. They will not
read any lower than this, ever... Once the temp moves above these
values its starts to rise, but other report completely frozen probs
(sometimes just reading 7c!). My motherboard reports 34c on the cpu
all the time, i have never seen it move off this value (this may be
fixed in future bios though). Nevertheless, there seems to be
problems with the sensors being reported on many websites, can you
confirm this and when will the recall take place?

-------------------------------------------------------------------
Intels response,

The maximum operating temperature of the Intel(R) Core(TM) 2 Duo
processor E8400 is 61.4 degrees Celsius. As long as the processor is
operating under this temperature it is operating within
specifications. We recommend setting any thermal alarms about three
(3) degrees below the maximum recommended temperature for the
processor. We do not have a normal operating temperature for the
processor as this temperature will vary depending on the chassis and
other hardware installed on the system as well as the actual load the
software is placing on the processor.

You do not need to worry about the temperature of each core, you only
need to pay attention to the CPU temperature itself.

Currently we do not have any report on sensor problems with the
Intel(R) Core(TM) 2 Duo processor E8400.