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E0 Stepping clocking results collection (Q9650, E8600 etc)

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Man, that is one sick E8400!

Got to eight hours Orthos stable before I turned it off because I wanted to actually USE the computer. This thing is done. 🙂
 
I can't wait for the cold fall air to get here. I'm going to stack my case and HSF with my Delta 154cfm monsters, pump the volts, and try for 5Ghz on "air" cooling.
 
Model: 8600
Vcore:1.18 ( default )
Speed: 4.1g
Stability: Orthos - 12 hours plus

4.3g @ 1.28v Orthos - 3 hours earlier today - will see how it does overnight ..
 
I just acquired this CPU (E8600) on Wednesday. Didn't fire up the system until Saturday morning. I've been plumbing my settings for higher and higher speeds, looking for a quick failure within an hour.

eVGA NF78-A1 780i motherboard (6-cycle voltage regulation and non-solid-state capacitors -- should have looked more carefully at the other 780i model that cost $20 more for 8-cycle and solid-state).

E8600 E0 stepping -- lapped to bare copper
G.SKILL DDR2-1000 2 x 2GB
BFG 9600 GT card that ships with the ZeroTherm heatpipe cooler
TR Ultima 90 CPU cooler -- lapped to Cu, diamond paste

So far:

4.0 Ghz, 1:1 with RAM @ 2.0V, 4,4,4,12,2T, DDR=800Mhz
VCORE = 1.318V; monitored load value under PRIME95 "Blend" = 1.27V
CPU_FSB = 1.40V
Other voltages set to "Auto"; NB core = 1.5V -- remainder including SPP, MCP read at <=1.3V

I had originally set the VCORE to 1.322V seeking failure as I moved up from the stock settings. I think I started at CPU_FSB = 350Mhz, moving up in 5Mhz increments.

I've now dropped the VCORE a notch looking for early failure.

Temperature readings are not reliable, and I believe this 780i board needs a newer BIOS revision from its July 08 version. The core temperatures seem "stuck" at 56/56C, but the tCase temperature shows about 37C @ idle and 53C @ load over a room-ambient range between 75F and 79F.

I'll edit this after I know for sure what I've got here. I don't really want to push higher on air-cooling with an nVidia Northbridge -- known to be "toasty."

But I may bump up again 5 Mhz at this lower VCORE notch -- just to see.

In-freakin-credible. Nothing y'all don't already know, but I had to put in my 2-cents-worth. The news everybody is seeking is probably around the corner with "i7."

 
Originally posted by: nevbie
Originally posted by: Diogenes2
Model: 8600
Vcore:1.81 ( default )
Speed: 4.1g
Stability: Orthos - 12 hours plus
Click to expand...

1.81v in CPU-Z under load?
Click to expand...

I use PC Wizard - I'll check to see if CPUZ says different..

By default - I mean I have it set to ' AUTO ' and the BIOS monitor
says 1.18 also ..


I have ' speed step ' & etc. enabled - so it idles at 2.4g - 1.07v ...
 
The retail-box maximum spec is only 1.26V.

If the BIOS monitor is accurate, then you've exceeded that by 43%.

I'm wondering . . . . where that setting falls on an exponential distribution of failure probability across a range of voltages . . .

I'm also wondering why-izzit that I'm dropping my fixed voltage setting to 1.30V, and it still seems rock-solid at 4.0 Ghz. I find it hard to imagine -- once I've found a PRIME95 early failure point, that I wouldn't be able to get to 4.1Ghz with the VCore no higher than 1.32V.

I would only say, Diogenes, "Be careful."
 
Originally posted by: BonzaiDuck
I'm also wondering why-izzit that I'm dropping my fixed voltage setting to 1.30V, and it still seems rock-solid at 4.0 Ghz. I find it hard to imagine
Click to expand...

I've seen an E8600 at 1.05v @ 4000mhz pass 1 hour occt.
 
Model: 8400
Vcore:1.23
Speed: 4.0 GHz (9x445)
Stability: Prime95 Small FFT 9+ hrs, IntelBurnTest 20 passes

I'm sure I could go higher, but 4 GHz at a such a low voltage is fine for now.
 
Originally posted by: jaredpace
Originally posted by: BonzaiDuck
I'm also wondering why-izzit that I'm dropping my fixed voltage setting to 1.30V, and it still seems rock-solid at 4.0 Ghz. I find it hard to imagine
Click to expand...

I've seen an E8600 at 1.05v @ 4000mhz pass 1 hour occt.
Click to expand...

Well, I guess I'm going to find out, won't I?

Look at Phew's E8400.

4 Ghz for the E8600 seems easy -- effortless. I might begin to worry about my Northbridge temperatures. Since this is DDR2 technology, I can't complain.

My concern about OCCT in my rig: it's a 32-bit stress program, and I'm using VISTA-64. I really don't see how that matters, and some others have said the same thing. But then -- why would it be important to use a 64-bit version of PRIME95?

I've got a way to go with this sucker -- not yet ready to PRIME it for half a day or put it under the IntelBurnTest jack-boot yet. I can't seem to find a point where it fails at 4 Ghz.
 
Originally posted by: BonzaiDuck
The retail-box maximum spec is only 1.26V.

If the BIOS monitor is accurate, then you've exceeded that by 43%.

I'm wondering . . . . where that setting falls on an exponential distribution of failure probability across a range of voltages . . .

I'm also wondering why-izzit that I'm dropping my fixed voltage setting to 1.30V, and it still seems rock-solid at 4.0 Ghz. I find it hard to imagine -- once I've found a PRIME95 early failure point, that I wouldn't be able to get to 4.1Ghz with the VCore no higher than 1.32V.

I would only say, Diogenes, "Be careful."
Click to expand...

Oops ..

Meant to write " 1.18 " ...😱
 
Well, Lee Harvey Oswald was dyslexic, spoke Russian as well as English, and was a counter-intel agent for CIA. :laugh:

Your transposition sure had my hair standing on end, though.

UPDATE: eVGA -- NF78-A1 780i motherboard; E8600 processor and G.SKILL 2x2GB DDR2-1000:

FINALLY -- a FAILURE POINT!!

VCORE 1.28375V set, reported as 1.24V -- 4.1 Ghz / FSB = 1,640 Mhz.

Fails in 17 minutes. It ran last night for 6 hrs, 35 minutes with "set" VCORE of 1.30V (reported as 1.25V) -- until I stopped PRIME95 with 0 errs, 0 warns.

So apparently you can over-clock this puppy -- on this motherboard -- with MY Karma -- to 4.1 Ghz and a load voltage something like 1.23 to 1.24V.
 
Did I interpret your results correctly so far, BonzaiDuck? Seeking failure points is good..

I imagine IntelBurnTest would speed up the testing, though. Just compare the heat output between it and Prime95.
 
Originally posted by: BonzaiDuck
I just acquired this CPU (E8600) on Wednesday. Didn't fire up the system until Saturday morning. I've been plumbing my settings for higher and higher speeds, looking for a quick failure within an hour.

eVGA NF78-A1 780i motherboard (6-cycle voltage regulation and non-solid-state capacitors -- should have looked more carefully at the other 780i model that cost $20 more for 8-cycle and solid-state).

E8600 E0 stepping -- lapped to bare copper
G.SKILL DDR2-1000 2 x 2GB
BFG 9600 GT card that ships with the ZeroTherm heatpipe cooler
TR Ultima 90 CPU cooler -- lapped to Cu, diamond paste

So far:

4.0 Ghz, 1:1 with RAM @ 2.0V, 4,4,4,12,2T, DDR=800Mhz
VCORE = 1.318V; monitored load value under PRIME95 "Blend" = 1.27V
CPU_FSB = 1.40V
Other voltages set to "Auto"; NB core = 1.5V -- remainder including SPP, MCP read at <=1.3V

I had originally set the VCORE to 1.322V seeking failure as I moved up from the stock settings. I think I started at CPU_FSB = 350Mhz, moving up in 5Mhz increments.

I've now dropped the VCORE a notch looking for early failure.

Temperature readings are not reliable, and I believe this 780i board needs a newer BIOS revision from its July 08 version. The core temperatures seem "stuck" at 56/56C, but the tCase temperature shows about 37C @ idle and 53C @ load over a room-ambient range between 75F and 79F.

I'll edit this after I know for sure what I've got here. I don't really want to push higher on air-cooling with an nVidia Northbridge -- known to be "toasty."

But I may bump up again 5 Mhz at this lower VCORE notch -- just to see.

In-freakin-credible. Nothing y'all don't already know, but I had to put in my 2-cents-worth. The news everybody is seeking is probably around the corner with "i7."
Click to expand...

Any changes recently? I've managed the following with stability:

E8600@4.12 GHz
10x410
1.330V, 1.24V/63C under load, 43C idle
OCCT 1 Hr.+!
wPrime 1024 test completed 580 sec.
wPrime 32M speed test completed 18.02 sec.
8 hrs. Orthos Blend

This thing is a miracle. The pinnacle of my OCing/self-building career. It's a true joy. Now if my APP SOFTWARE could be released in 64-bit versions! Hello, Adobe? Um, Microsoft? :disgust:
 
Originally posted by: Dadofamunky

Any changes recently? I've managed the following with stability:

E8600@4.12 GHz
10x410
1.330V, 1.24V/63C under load, 43C idle
OCCT 1 Hr.+!
wPrime 1024 test completed 580 sec.
wPrime 32M speed test completed 18.02 sec.
8 hrs. Orthos Blend

This thing is a miracle. The pinnacle of my OCing/self-building career. It's a true joy. Now if my APP SOFTWARE could be released in 64-bit versions! Hello, Adobe? Um, Microsoft? :disgust:
Click to expand...

I think I got mixed up about your NewEgg review. It was for the E8600, wasn't it? There just cannot be two people out there in cyber-land with a handle like yours.

Believe it or not, I got to exactly 4.10 Ghz with voltage set to just 1.300V -- reported 1.26V idle, 1.25V load. I only Blended it for about 5 hours -- will go back and do what I just did for small-FFTs: It just passed 15 hours.

Your voltage monitor-reading seems about right, but I got failure in 17 minutes with load reading of 1.24V. So kicking it up a hundredth suddenly made it stable.

Also -- the temperatures on these things are all wacko, or as I suggested many times -- the BIOS revisions. I'm concerned that until BIOS revisions are made that correct the problem, fan control won't work properly in BIOS (an issue I have with this eVGA 780i).

This 780i has a feature euphemistically named "ESA" or "Enthusiast [something] Architecture." Still waiting for responses or assurances from the eVGA tech support people ["When will there be another BIOS release?" etc.] I found a device by Silverstone that seems to be the descendant of the "Eudemon." But it will only work with these nVidia boards and the nTune / nVidia Monitor software that comes with the boards or available at nVidia's download site. And for anyone listening in, I don't THINK it's good for the prior-gen 680i boards, but you never know.

Every time I spend money on something like this, there's some probability that it doesn't work like it's supposed to. :frown:
 
Tried pushing my E0 E8400 a little harder today after improving my case cooling:

Model: 8400
Vcore:1.34
Speed: 4.3 GHz (9x478)
Stability: Prime95 Small FFT 10 hrs

4.4 GHz requires exceeding the Intel spec of 1.36V, so looks like I am staying at 4.3 GHz for now. Max temp so far is around 60C. Nice chip!
 
What a sweet chip !! antec 900 case w/ zerotherm zen 120 cpu cooler

Model : E8600
VCore : 1.208 V or 1.1625 vid in real temp
Speed : 4.25 Ghz [ 10 x 425 ]
Stable : 3D Mark o6 = 12,639

3o*C Idle & 41*C Load
 
Originally posted by: BonzaiDuck
I think I got mixed up about your NewEgg review. It was for the E8600, wasn't it? There just cannot be two people out there in cyber-land with a handle like yours.

Believe it or not, I got to exactly 4.10 Ghz with voltage set to just 1.300V -- reported 1.26V idle, 1.25V load. I only Blended it for about 5 hours -- will go back and do what I just did for small-FFTs: It just passed 15 hours.

Your voltage monitor-reading seems about right, but I got failure in 17 minutes with load reading of 1.24V. So kicking it up a hundredth suddenly made it stable.

Also -- the temperatures on these things are all wacko, or as I suggested many times -- the BIOS revisions. I'm concerned that until BIOS revisions are made that correct the problem, fan control won't work properly in BIOS (an issue I have with this eVGA 780i).

This 780i has a feature euphemistically named "ESA" or "Enthusiast [something] Architecture." Still waiting for responses or assurances from the eVGA tech support people ["When will there be another BIOS release?" etc.] I found a device by Silverstone that seems to be the descendant of the "Eudemon." But it will only work with these nVidia boards and the nTune / nVidia Monitor software that comes with the boards or available at nVidia's download site. And for anyone listening in, I don't THINK it's good for the prior-gen 680i boards, but you never know.

Every time I spend money on something like this, there's some probability that it doesn't work like it's supposed to. :frown:
Click to expand...

I think you're right. I'm still frustrated with cooling, however. I think my temps are way too high even with the Scythe Zipang. I'm going to invest in a higher-end fan controller (I have a 140mm fan on my Scythe) and see if I can't improve matters.
 
E8400 | 1.47x | 533*9=4800 | wPrime 1024M (dqniel)

this guy must be super lucky on his chip. hope he is using water at this speed.
 
Originally posted by: jaredpace
Originally posted by: nyker96
E8400 | 1.47x | 533*9=4800 | wPrime 1024M (dqniel)

this guy must be super lucky on his chip. hope he is using water at this speed.
Click to expand...

How about this guy?
e8600
1.472V
5.1Ghz (510x10)
8 hours Prime95 stable

http://ocidb.com/albums/userpi...Orthos-5_1ghz-3d01.JPG
Click to expand...

that cant be on air, thats insane, both are

its crazy my non E0 stepping E8400 has issues with stability at 4.2GHz on air, so i run it at 4.0, a whole nother 1000 MHz outta the chip is insane
 
Model: E8400
Vcore: 1.35
Speed: 4.0Ghz (445 * 9)
Stability: Passed IntelBurnTest (10 Passes), 1 hour OCCT
 
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