**Official e8400/e8500 Retail OC Thread

[mrcape]

Weird, have you tested your ram?

[Nistomax]

It's been a while since ive overclocked or anything, but i got a new EVGA 780i mobo and a e8400 and i decided to give it a shot.
Batch #: Q747A377 Pack Date: 02/05/08
I'm too embarrassed to post pictures, mines only running at a paltry 3600Mhz(400x9). I think it could probably do better, but I'm not quite ready to do vdroop yet. My voltages are as follows according to BIOS
core 1.4125
FSB 1.3
Memory: 2.3
nForce SPP: 1.4
nForce MCP: 1.55
HT nForce SPP <-> MCP: 1.25V
Another interesting problem is that the ram isnt stable past 1000Mhz, even though its rated for 1066 and my old 680i board boasted 1200Mhz stable.
Temps are around 40C according to CoreTemp and bios, so im just curious as to why it wont boot any faster. More voltage? Bad Chip? Need vdroop?
Any ideas would be appreciated, I want to make sure this chip isnt a dud before i spend all the effort and take the risks involved with adding on my SS phase unit. Thanks in advance!

[Furiøùs]

I had to bring my memory down from 1000 to 800 to get 445x9 (1780QDR) stable. Not sure, Its new technology though so it can only get better. But i'd have to go and say the chip is a dud, You've got alot of voltage on it and its not really getting anywhere. I'd have to go with return it.

[ixtapalapaquetl]

Has anyone tried priming with 10k FFT length?
It put's the most stress on my cpu. If my overclock is not stable the 10k fft's
will let me know within 5 minuts or less while 1024k's and 8k's will prime for
hours. Can you guy's try it? Im just curious if this is common on wolfdales.

I've noticed the same thing. Odd, huh?

[rge]

You mean like log below. Its why i quit using orthos small ffts of 8k looped over and over, and use either custom runs of 8K-64K (or 8K-256K/512K for ram also) or prime newest version 8K-64K.

1:Test 1, 800000 Lucas-Lehmer iterations of M172031 using 8K FFT length.
2:Test 1, 800000 Lucas-Lehmer iterations of M172031 using 8K FFT length.
2:Test 2, 800000 Lucas-Lehmer iterations of M163839 using 8K FFT length.
1:Test 2, 800000 Lucas-Lehmer iterations of M163839 using 8K FFT length.
2:Test 3, 800000 Lucas-Lehmer iterations of M159745 using 8K FFT length.
1:Test 3, 800000 Lucas-Lehmer iterations of M159745 using 8K FFT length.
2:Test 4, 800000 Lucas-Lehmer iterations of M157695 using 8K FFT length.
1:Test 4, 800000 Lucas-Lehmer iterations of M157695 using 8K FFT length.
2:Test 5, 800000 Lucas-Lehmer iterations of M155649 using 8K FFT length.
1:Test 5, 800000 Lucas-Lehmer iterations of M155649 using 8K FFT length.
2:Test 6, 800000 Lucas-Lehmer iterations of M153599 using 8K FFT length.
1:Test 6, 800000 Lucas-Lehmer iterations of M153599 using 8K FFT length.
2:Test 7, 800000 Lucas-Lehmer iterations of M147455 using 8K FFT length.
1:Test 7, 800000 Lucas-Lehmer iterations of M147455 using 8K FFT length.
2:Test 8, 800000 Lucas-Lehmer iterations of M143361 using 8K FFT length.
1:Test 8, 800000 Lucas-Lehmer iterations of M143361 using 8K FFT length.
2:Test 9, 800000 Lucas-Lehmer iterations of M141311 using 8K FFT length.
1:Test 9, 800000 Lucas-Lehmer iterations of M141311 using 8K FFT length.
2:Test 10, 800000 Lucas-Lehmer iterations of M135169 using 8K FFT length.
1:Test 10, 800000 Lucas-Lehmer iterations of M135169 using 8K FFT length.
2:Test 11, 800000 Lucas-Lehmer iterations of M172031 using 8K FFT length.
1:Test 11, 800000 Lucas-Lehmer iterations of M172031 using 8K FFT length.
2:Test 12, 800000 Lucas-Lehmer iterations of M163839 using 8K FFT length.
1:Test 12, 800000 Lucas-Lehmer iterations of M163839 using 8K FFT length.
1:Test 13, 800000 Lucas-Lehmer iterations of M159745 using 8K FFT length.
2:Test 13, 800000 Lucas-Lehmer iterations of M159745 using 8K FFT length.
1:Self-test 8K passed!
1:Test 1, 560000 Lucas-Lehmer iterations of M212991 using 10K FFT length.
2:Self-test 8K passed!
2:Test 1, 560000 Lucas-Lehmer iterations of M212991 using 10K FFT length.
2:Test 2, 560000 Lucas-Lehmer iterations of M210415 using 10K FFT length.
1:Test 2, 560000 Lucas-Lehmer iterations of M210415 using 10K FFT length.
2:FATAL ERROR: Final result was FFA31AC4, expected: 3FC3CCD7.
2:Hardware failure detected, consult stress.txt file.

[SlackAdjuster]

It's been a while since ive overclocked or anything, but i got a new EVGA 780i mobo and a e8400 and i decided to give it a shot.
Batch #: Q747A377 Pack Date: 02/05/08
I'm too embarrassed to post pictures, mines only running at a paltry 3600Mhz(400x9). I think it could probably do better, but I'm not quite ready to do vdroop yet. My voltages are as follows according to BIOS
core 1.4125
FSB 1.3
Memory: 2.3
nForce SPP: 1.4
nForce MCP: 1.55
HT nForce SPP <-> MCP: 1.25V
Another interesting problem is that the ram isnt stable past 1000Mhz, even though its rated for 1066 and my old 680i board boasted 1200Mhz stable.
Temps are around 40C according to CoreTemp and bios, so im just curious as to why it wont boot any faster. More voltage? Bad Chip? Need vdroop?
Any ideas would be appreciated, I want to make sure this chip isnt a dud before i spend all the effort and take the risks involved with adding on my SS phase unit. Thanks in advance!

I have a MSI P35 & thought I could do better with a Evga 780i. The MSI board will do 8x500 FSB @ 1.337 Volts. The 780i board barely does 9X400 @ 1.4V & resets bios randomly even though orthos is stable for 12+ hours. I even did the pencil mod & have the latest bios too. My guess is that with the cheapo capacitors & vdroop this board won't even do a mild overclock. I have since switched back to my P35 & happily running at 4 ghz. Also, My ram does 1066 at 2.1V & if I push it to 2.3 it does 1200 with relaxed timings.

SlackAdjuster

[alcatraroz]

You guys have good E8400's and looks like most of them hits 4.3-4.4Ghz stable on low volts too

yes 4.35 at 1.39 v daily use i think is a good chip

[ArCElM]

yes 4.35 at 1.39 v daily use i think is a good chip

fkn amazing chip.

I need 1.352v IDLE and 1.320v LOAD for 4.1Ghz - 4.2+ and I have to start upping the vcore.

WAIT A SEC - post prime/orthos stable? - like this..

[kadir_slayer]

I want to cross my heart and hope to die since mine is stabil at 4.05 with 1.432v (load)

[TEDY]

you guys have excellent chips.

[maxwolfie]

I want to cross my heart and hope to die since mine is stabil at 4.05 with 1.432v (load)

Dude too many volts. 1.4v max for 24/7

[thebanik]

nice chips you all have got, dunno whether its my chip or mars board, but i need fooking 1.55V for 4Ghz now. On my P5ne sli i was able to do 3.6Ghz on 1.25 volts.

[maxwolfie]

^


Dude, totally different CPU type

[thebanik]

^


Dude, totally different CPU type

dont go by my sig, i am using foxconn mars board and E8400, , how many times have u heard E4300 doing 4ghz anyways, wud have been delighted instead of complaining.

[kadir_slayer]

I am so unlucky. my cpu needs much voltage for 4.05 and there is fifteen C between core temps when they are idle. they are equal when they are loaded. batch:q746a516 keep away from it

[maxwolfie]

Kadir, what voltage does it need for 4050?

Don't worry about the temp issue, almost everyone has it. ignore it!

[thebanik]

I am so unlucky. my cpu needs much voltage for 4.05 and there is fifteen C between core temps when they are idle. they are equal when they are loaded. batch:q746a516 keep away from it

hahahaha, if you complain like this then what should i do???? Cant even RMA the board, dunno whether they will honor it or not, since its just overclocking which is not working properly.

[kadir_slayer]

Kadir, what voltage does it need for 4050?

Don't worry about the temp issue, almost everyone has it. ignore it!

bios:1.4625 windows idle:1.440 load:1.432

vpll:auto
vfsb:1.20
vnb:1.40

[laragirl83]

bios:1.4625 windows idle:1.440 load:1.432

vpll:auto
vfsb:1.20
vnb:1.40

Bahh, way tooo much voltage...
Lower the MHz and voltage as well, u gonna kill it..

[alcatraroz]

fkn amazing chip.

I need 1.352v IDLE and 1.320v LOAD for 4.1Ghz - 4.2+ and I have to start upping the vcore.

WAIT A SEC - post prime/orthos stable? - like this..

about prime dont know cuz i get annoyng to wait so longtime just i passed double sPi 16 M..( IMHO its enough i dont mind if iam not rocksolid)anyway i keep this vcore for a week and never got a bsod or some issues so far... then there have lots of ppls that give 1.72 v just for bench single SPi 1M at 5 ghz on air, so they are rocksolid just for 8.5 sec ....right now i stay daily at 4.356 at 1.39







anyway this i found

[ArCElM]

about prime dont know cuz i get annoyng to wait so longtime just i passed double sPi 16 M..( IMHO its enough i dont mind if iam not rocksolid)anyway i keep this vcore for a week and never got a bsod or some issues so far... then there have lots of ppls that give 1.72 v just for bench single SPi 1M at 5 ghz on air, so they are rocksolid just for 8.5 sec ....right now i stay daily at 4.356 at 1.39







anyway this i found

Yeah well mine does that EASY - you don't know how good your chip is unless you test it, and the tests we use are far more efficient and a run of SuperPI, so you really do not know about your chip yet.

[CrazyNutz]

It's been a while since ive overclocked or anything, but i got a new EVGA 780i mobo and a e8400 and i decided to give it a shot.
Batch #: Q747A377 Pack Date: 02/05/08
I'm too embarrassed to post pictures, mines only running at a paltry 3600Mhz(400x9). I think it could probably do better, but I'm not quite ready to do vdroop yet. My voltages are as follows according to BIOS
core 1.4125
FSB 1.3
Memory: 2.3
nForce SPP: 1.4
nForce MCP: 1.55
HT nForce SPP <-> MCP: 1.25V
Another interesting problem is that the ram isnt stable past 1000Mhz, even though its rated for 1066 and my old 680i board boasted 1200Mhz stable.
Temps are around 40C according to CoreTemp and bios, so im just curious as to why it wont boot any faster. More voltage? Bad Chip? Need vdroop?
Any ideas would be appreciated, I want to make sure this chip isnt a dud before i spend all the effort and take the risks involved with adding on my SS phase unit. Thanks in advance!

I have the exact same batch# and pack date, and mine is not that great either. 3807mhz (8 hours prime) is the best I can do without going past the 1.36vcore (safe limit). One thing I think you may try is keeping your FSB at
1.10v this seem to make mine the most stable, however I am on a p35 I don't
know if/how it will pan out on your 780i. Oh an keep your GTL low.

[Big Lar]

I am working on 4100 at 1.28 right now, image coming soon.

[img=http://img267.imageshack.us/img267/5733/4100128pq7.th.jpg]

[CrazyNutz]

I've noticed the same thing. Odd, huh?

Yes very odd, so im not the only one , good to know im not crazy, or nutz! .

[Mav451]

Yeah I was gonna say, I don't go below 2M SuperPI, b/c 1M is done way too quick with these chips. But even then, SuperPI doesn't tell you jack in terms of stability - and just ends up being e-peen with no real-world impact (e.g. gaming performance). OCCT or 10K prime, OTOH? Yeah I'd trust those alot more instead.