any one know about bacth i7 860 L937B434 ?
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any one know about bacth i7 860 L937B434 ?
http://i43.photobucket.com/albums/e3...violet/cpu.png
This is a screen shot of batch number: l933b553
About to test my second i7 860...
batch number: l932b709
Just confirmed: Batch number l932b709 is a no go... Same oc profile and setttings.. Could'nt hit 5.0 if you threw a stick at it. cheers!!
Just wondering if you guys seen any worse i7-860 than mine yet:
195x21 HT off (4.1GHz) or 191x21 HT on requires:
Vcore: 1.4375v BIOS / 1.408v CPU-Z
VTT: 1.36v
I'll add the stepping when I come home. It's a rather early stepping.
Even at 196 it won't be stable unless I add a little more juice. At first I thought I needed 1.36v VTT only cuz of 12x ram multi / DDR3-2340 but that didn't turn to be true, it still required 1.36v despite lowering to 8x multi / ~DDR3-1600, ie. for 195 blck it simply needs this VTT. This makes me wanna try if I have more luck using turbo to get 22x multi. Well at least the temps are good in my openbed setup, 69~73C HT off in LinX and 74~76C HT on.
I NEVER get any good cpu samples when ordering new from store, to illustrate on scale I usually receive:
Worst |---X------------AVG-----------------| Best
but when it comes to RAM:
Worst |----------------AVG-------------X---| Best, very annoying!
This has usually made me push the voltages to the limits for a CPU and aircooling to achieve a somewhat satisfying clock speed and I never manage to kill a CPU yet despite running at rather high 24/7 vcore settings like E6750 @ 3.75GHz 1.52v or A64 SD3700+ @ 2.8GHz 1.65~1.67v for example. I so hated that SD3700+, it only clocked to 2.8GHz at this voltage when some other samples around the time I bought mine were able to do 2.9~2.95GHz at 1.5~1.52v. :rofl: My E8400 was a little better at least, it required "only" 1.36v for 4.0GHz (C0 stepping tho) and Opteron 165 did 2.8GHz at 1.42~1.43v. I really shouldn't buy CPUs new from store it seems with this luck.
RPGWiZaRD, on my P55UD4P I can get the 22x multi (always on) with turbo mode disabled by setting turbo mode to 'auto' and turning all the other power saving stuff off. C1E/C3/C6/C7 states, EIST etc.
Your temps are very good for those volts.
Thanks for the tip but unfortunately didn't have any good luck with 22x multi either, tried going from 4.1 to 4.15GHz and for that it would require a vcore bump from 1.4375 to 1.45v bios setting to remain stable in LinX (well for a couple of mins at least). So gonna stick to 195x21 but it seems VTT: 1.34v instead of 1.36v is actually possible to use, didn't seem to be when I first tried, could have been the bios version tho dunno cuz I remember getting bsods when running LinX previously at this clock speed with 1.34v. At least efficiency is great but I wish the CPU didn't have to start maxing out exactly at this clock speed but a couple of 10MHz higher so I could have run 198x21 (4.16GHz) & DDR3-2376 or 199x21 (4.18GHz) & DDR3-2388 and have superb performance efficiency as that's whereabouts these ram sticks maxes out at 1.68v vdimm bios setting. Oh well have to keep an eye for some good cpu offers or wait for Clarksdale possibly. :p:Quote:
Originally Posted by dcl
http://img5.imageshack.us/img5/8562/udklip3.th.jpg
Hehe im from Greenland..
Got a new 1156 cpu today, bios shows vcore at 1.139v at default settings all power savings options disabled. Everest and cpuz read the vcore at 1.141v, there is no vid information in RealTemp or core temp so IDk will just have to go on what bios reads. Will start testing now and post some results soon I hope.
Seems promising might be 1.20 vid or maybe 1.225 vid. Hopefully it will be a good clocker. I wish Intel didn't move the temp registers on these chips... I don't like doing guesstimates.Quote:
Originally Posted by OC Nub
First test was a quick LinX run, only 5 passes. Going about this all wrong I know but I will go back and starting at stock vcore test again once I am done playing. Anyway I set 1.225vcore in bios which was my default vcore on the 860 and booted at 3851mhz and was able to pass a very short linx run. Temps are warmer than I expected so that may end up being an issue at higher speeds. I know I could have got a 920do/x58 that would be faster but I am having fun on this platform.
http://img41.imageshack.us/img41/170/8703850mhz.png
More testing, took a big bump in vcore for the next 250mhz. I'm sure its not truly stable but just doing short runs with only 5 passes for tonight.
http://img502.imageshack.us/img502/5...vcoreload1.png
4200mhz 5 passes, load vcore was 1.341v
http://img522.imageshack.us/img522/5...5passes870.png
nice goin OC Nub you got a good 860 like mine
but i like my D0 more i'm doin 4.5 @ 1.4v on air with 6 stix
i'm lazy i only passed linx 20 pases 2 times:rofl:
zsamz: Actually I got the 870 chip, I went looking for 920 do's with a long list of batch#'s in my pocket and out of 30 or 40 cpu's I could not find one with a known good batch. Also the board selection wasn't very large, had 3 boards to choose from, the p6t, the ud3 and the evga sli le. I had wanted the ud7 or a higher end evga board. Decided to stick with this evga p55 and try this chip even though it may not have done better than my 860. Stupid maybe but I am having fun with it, I know the x58 is faster but this is doing pretty good for me.
damn i didnt see it bein an 870Quote:
Originally Posted by OC Nub
for 24/7 rig it dont really matter
i got my 860+ftw in a box :rofl:
i got a nice low vid q9650 n my gigabut board died gonna be till next year till i get it back:mad:
i think the 860 might come outa da box soon:D
I almost didn't post any results with this chip because I figured I may have to hear how stupid I was for getting it and not going x58, but I do like the rig now especially after getting a better set ram for it.Quote:
Originally Posted by zsamz_
quick LinX run at 4300mhz.
http://img697.imageshack.us/img697/7...4300mhz870.png
zsamz, how did your UD4P die?
it died while i was running only 2 cores :rofl:Quote:
Originally Posted by dcl
i doubt i was stressin it lol i waasnt even primin just runnin everest tests
Seems like its a pretty decent chip... look forward to seeing more.Quote:
Originally Posted by OC Nub
OC Nub, damn I wish I had ur luck, my i7-860 need more vcore for 4.1GHz HT off (~1.4v) than you need for 4.3GHz HT: on. :( Mine did 3507 MHz on stock voltage 1.225v bios setting (~1.18~1.2v cpu-z). What was your i7-860 like?
Quote:
Originally Posted by OC Nub
i'm not sayin a word you know my thoughts on your blunder:eek:
I'm happy with it so far, I will do some more testing as soon as i have time.Quote:
Originally Posted by PolRoger
My 860 needed about the same vcore for 4.0ghz as this needs for 4.3ghz with HT on, it also needed a lot more vtt.Quote:
Originally Posted by RPGWiZaRD
:ROTF:Quote:
Originally Posted by zsamz_
Trying some spi 1m to get under 9s., had a better run at 4900mhz but the pc froze up when I opened snipping tool. Will work on that some more when I get time. I have no idea what a good run is for 1m on an 1156 chip but this is my personal best so far.
http://img192.imageshack.us/img192/5331/im47ghz.png
http://img294.imageshack.us/img294/7046/1m474ghz.png
http://img514.imageshack.us/img514/7569/1m48.png
Testing blend tonight. It needed a small bump in vcore from the short linx run I did last night, failed blend at 1.29vcore after about 20 minutes or so. I tested this ram using the same timings at higher speeds with my 860 so I am pretty sure it was just lack of vcore that caused it to fail. Will let this go overnight to see if it is stable enough to move on.
http://img706.imageshack.us/img706/6...end4100mhz.png
Passed blend at 4100mhz.
http://img191.imageshack.us/img191/4...end4100mhz.png
:up:... Batch#?Quote:
Originally Posted by OC Nub
http://img13.imageshack.us/img13/8460/batch870.png
I have no idea why there is a "T" at the end, I have never seen that before. Will try and test some more blend tonight.
I got this and the 860 from the same Micro Center. The 860 wasn't as good, required much more vcore and vtt. Have saved all my retail boxes over the past few years and hadn't seen this T before now. I am happy so far with the chip, will test some more when I get time.
Thanks, I'm testing 4200mhz blend now. It is warm in the room, the wife is killing my overclocking though with the heat turned way up.:(
can only SuperPi 32M test and PCMark Vantage cz the temp so hot
http://img340.imageshack.us/img340/6937/pi32m42g.png
http://img695.imageshack.us/img695/8...mark42copy.jpg...
because your heatsink suksQuote:
Originally Posted by ovan febriawan
i never even hit above 85c even with linx
@zsamz_ : I'm not using HSF, I use TT Prowater 880i :shrug:
any recomendation for may cooling?
some would probably say upgrading to real watercooling...what kind of budget do you have?
at this time, I only have $150 for upgrade:p:Quote:
Originally Posted by DragoonXX
get a coolmaster 212 28 shipped with an xtra fan for push pull 10$=40$Quote:
Originally Posted by ovan febriawan
http://www.newegg.com/Product/Produc...olmaster%20212
or get a megahalems 60$ + extra fan=70$
http://www.newegg.com/Product/Produc...Tpk=megahalems
you be good for 4.2
ive got one! 860 Batch number L932B709 pack date 10/15/09 how do you find the VID on these chips? have not oc'd at all yet actually havent even fired the m3f and 860 patriot sector 5 2000MHZ and 5770 up yet! just got them just now like 3 mins ago!
well here it is guys! right out of the box stock cooler idle temps about 39-42c load about 66c or so not bad right? is this a decent OC?? this is my first time overclocking anything without a FSB since core2 came out lol
Hello guys, I'm newbie here. Glad to join this thread...
http://farm3.static.flickr.com/2637/...8b5e6faf_b.jpg
Currently limited @ 4.0 ghz, with BIOS Setting as below :
AI Overclock Tuner : Manual
CPU Ratio Setting : 20
C1E Support : Disabled
Intel Speedstep Tech : Disabled
Intel C-STATE Tech : Disabled
BCLK Frequency : 200
PCIE Frequency : 100
DRAM Frequency : DDR3-1600 Mhz
QPI Frequency : 7202
Load Line Calibration : Enabled
CPU Voltage : 1.3500
CPU PLL Voltage : 1.80200
IMC Voltage : 1.29850
PCH Voltage : 1.06000
DRAM Voltage : 1.65625
DRAM Timing Control
CAS Latency : 7
RAS to CAS Delay : 7
RAS PRE Time : 7
RAS ACT Time : 24
Onboard Devices Configuration : Disabled
It's hard pushing beyond 4.0 ghz becaus of the temperature is already too HOT. 1 minute Linpack the temp has reached 82 C. So I shut it down. But with above setting I manage to pass 3DMark 2006, Vantage and SuperPI 32 mb.
Your voltages are good for 4ghz, but I would keep pll at 1.80v and dram at 1.65v. What cpu cooler are you using?
I rebuilt my loop today, and replaced the gtz water block with and xt. Just got it running after testing for leaks. Running some blend to see how it does.
http://img46.imageshack.us/img46/7904/newwc.png
It's 1.80v and 1.65v. I use TRUE Black. In my place the ambient temperature is very hot, about 28 -30 C.Quote:
Originally Posted by OC Nub
Corsair H50 cooler
P7P55D-E Deluxe
G.Skill Ripjaws 2000MHz ram
Results: (after ~8 hours of LinX)
172MHz BCLK
21x mult
3.62GHz CPU speed
2064MHz Memory speed
1.25Vcore
1.35VTT
1.6Vdimm
While nothing extraordinary, this system is dead silent and extremely stable.
Can your chip run that overclock with a little more vcore and less vtt... ~1.25v?Quote:
Originally Posted by irev210
My i5 750 was so easy to OC compared to my new i7 860.
Temps are way higher at similar vcore due to HT, & once again, what's stable in P95 isn't remotely stable in LinX.
For both my i5 750 & the i7 860 in here now, i find P95 useless when using LinX, as P95 (even w/ custom RAM set to 6+ GB) says all is stable & LinX fail in less than 10 passes :shakes:
I cannot even get 4 GHz LinX stable outta this i7 860 so far . :(
P95 says all is great @ 4 GHz, but LinX laughs @ me & says nope, even when i upped vcore.
http://ense7en.com/pics/i7%20860/i7%...s%20stable.jpg
http://ense7en.com/pics/i7%20860/i7%...5%20passes.JPG
Well, after much fighting, it's obvious i cannot do 4 GHz LinX stable due as i'd need more vcore than my temps allow for.
Kinda disappointing, as i could do 4.15 GHz LinX stable w/ my i5 750, but i suppose HT is nice to have...
For the i5 750, i could do ~ 200 BCLK @ 1.23vtt.
For the i7 860, it needs at least 1.29vtt for the same, or BSODs during LinX...
Here is as far as i can get with vcore/vtt as low as possible:
http://ense7en.com/pics/i7%20860/20x...2012%20hrs.JPG
Synthetics
http://ense7en.com/pics/i7%20860/20x...-9-8-24-1N.jpg
mannn -n7- them 860s are gettin worse
Not yet, my i7-860 is a very early batch and doesn't do any well.
4GHz (191x21) HT on:
Vcore: 1.4375v (BIOS setting) / 1.408v CPU-Z
VTT: 1.32v
4.1GHz (195x21) HT off:
Vcore: 1.4375v (BIOS setting) / 1.408v CPU-Z
VTT: 1.36v
Temps are 69~72C HT off and 74~76C HT on during LinX. However during LinX CPU-Z shows only 1.36v load. LLC is set to "standard" taking into account Intel LLC standard specs, using level 1 and 2 which are supposed to increase vcore a bit further at load didn't do any good for me but it's prolly the VTT volts that would need increase instead if overclocking a bit further, honestly I have no idea why this cpu needs this much VTT even pre 200 bclck but it's not cuz of the mem, whatever mem multi/setting I use I still need the same VTT for cpu to be stable.
wow your is bad i got mine early tooQuote:
Originally Posted by RPGWiZaRD
i can do 4.2 ht 1.4v
@-n7-: Are you running the latest 64bit version of p95? On every board I have, from the 775 quads to these 1156 quads it takes less voltage to pass linx than blend, have seen others post the same thing. Normally if it runs 20 passes of linx max mem it will require a small bump in vcore to pass blend without exception on about 6 different quads and 4 different boards.
Seriously?Quote:
Originally Posted by OC Nub
I've found the exact opposite to be true for my Q9550/Q9650/i5 750/i7 860.
For me, LinX max RAM always requires more vcore than P95 anything.
I've always used the x64 version yes, presently on 25.11
I suspect it has to do with my 8 GB though, as max RAM LinX w/ 8 GB is far harder on the CPU than 4 GB.
Ahh sorry, didn't see the 8gb of ram, that would make a huge difference. I have only tested using 2x2gb kits.Quote:
Originally Posted by -n7-
Have been playing with this ud6 board today and got a validation of 5ghz. Vcore was insane.
@-n7-, I tried linx using 8gb today max mem at 7160mb, it failed on the first pass, so I went up on PCH voltage a couple notches from 1.080 to 1.120v, made it through 3 passes in 18 minutes before stopping the test myself and deciding 8gb is not for me, I feel your pain. I don't know if it would have passed or not but at 6 minutes each pass I wont be finding out.
Small update on the overclock:Quote:
Originally Posted by irev210
168MHz BCLK
22x mult
3.7GHz CPU
2016MHz Memory speed
1.26Vcore
1.35VTT
1.6Vdimm
Well sure, if I slow down the ram. 6x mult I am using on the ram gives me 2016MHz, hard on the memory controller.Quote:
Originally Posted by PolRoger
My biggest issue is heat. Since I am only using two fans in the entire case.
CASE WALL | 140MM FAN (1200MAX RPM) | Corsair H50 radiator | Corsair 120MM FAN (1500 MAX RPM)
The power supply is that new seasonic X650, which the fan isn't even on most of the time.
It's pretty sweet, when the system is idle, the fans are spinning <800RPM (and the power supply turns off). Since this has SSD's, it is just about dead silent.
Ahh... I missed the divider that you were using and was just thinking about your BCLK...Quote:
Originally Posted by irev210
I don't have that divider available with my X3440 or i5 and I seem to need ~1.3v+ imc/vtt with ~210+ bclk
i have the ftw and 860 and i can't get 200 bclk.
got a shacky 190 but i am running stable 180x21 for 3781 mhz
but i have to use high voltages to get there.
VCORE 1.4v
VTT 1.4v
PCH 1.075v
is there any point of raising the PCH?
i would like to use less power or get higher clocks
I set PCH 1.125v on that board to help with stability at higher clocks.Quote:
Originally Posted by bot@xs
i was actually able to lower the voltages and raise bclk to 185 for 3885 mhz
voltages now are:
vcore 1.4v
VTT 1.35v
PCH 1.05v
PLL 1.65v
Hi,
I don't know if you know this thread: http://www.evga.com/forums/tm.aspx?m=20029
I used the settings suggested by the EVGA product manager, and run my i7 860 @4.2GHz very stable!
http://free0.hiboox.com/images/0110/...e30a684991.png
I'm not at home for the moment, but I can also take a screen shot of my voltages if useful. The Vcore is at 1,36V, never more than 1,38V. I had to icrease it a bit because under @ 1,30 (recommended starting point in the EVGA PM tutorial) it was not stable with Prime95 (some errors in 3 cores).
So you may test these settings maybe it helps ;)
yes please if you could. i saw the thread you linked too, it's actually mention by the OP in the first post
somehow, is no worky for me. i finally got it to a stable 4ghz but i have to increase VTT to 1.425v
i am not sure if i am compfy with that 24/7, how sensitive are these chips to high VTT's?
i usually go through a intelburnintest and linx session before i prime .. is that :up: or :down:
I can only judge from my x58 i7, but with 12GB I'm running over 1.4v on VTT 100% load 24/7 for 9 months now with no problems whatsoever. Latest LinX session was 66 runs before I got bored. So I'd say all you have to do is keep VTT within the usual .5v from DRAM and you're set, your chip will take it if you can keep it cool. If it needs 1.425 to be stable then feed it just that. Your board will go down first if the PWM section goes flaky or catches fire...
Quote:
Originally Posted by bot@xs
Ok here it is, example with OCCT CPU LINPACK 64 bit with HT on:
http://free0.hiboox.com/images/0110/...91ac331a38.png
Link to display large image: http://www.hiboox.fr/go/images-100/s...31a38.png.html
Here it's only 2 minutes for showing the requested data, after 1 hour the water temp is around 34-35°C with a air intake temp of 23°C, I was not in my private office this evening so it's cold in there, 18°C, brrr.....
In the EVGA tutorial, they talk about that:
@ 1,3VCore, not stable with high CPU load. I increase the Vcore power until 1,36V and something using the ECP hardware control panel and it was working. What I do not understand is that the Vcore auto adjust during stress test, but anyway if I setup VCore @ 1,36V+, no problem with stability.Quote:
* Bootup CPU VCore - 1.30000V (good for starting point, will likely need to increase for 24/7 stability)
* Eventual CPU VCore - 1.30000V (good for starting point, will likely need to increase for 24/7 stability.)
* DIMM Voltage - 1.65V
* Bootup CPU VTT - 1.400V
* Eventual CPU VTT - 1.400V
There is another difference with the tutorial: I use native PC16K memory modules, so I don't OC the memory, it's running @ 2000MHz 8-8-8-24 1,65V without OC, it's the reference setup for the GT.
Something happens when temps are higher, for example during a Power Supply test with OCCT: if I run a Prime95 8 threads, I get some errors on 3 cores. I don't know why, calculation stops on Core 0 thread 2, and core 2 thread 1 and 2. Maybe because temps or voltage are too high? Its not reported on the monitoring... never went over 80°C even after a hard time testing all CPu/GPU together.
Do you think the dual 8 pin 12V power connector on the Mobo may help for stability? My PSU is connected on both of them. :shrug:
Yes maybe something else: I don't use this setup for daily use!! I'm concerning with power consumption and earth care. So I usually use a dynamic OC, with C State, Speed Step and Turbo Mode on, Bclk @ 166, mem @ 2000MHz 8-8-8-24 1,65V. I have more power when needed only, but also downclocking depending on the perf requirements. And I'll also test a 2 cores only cpu, because I don't see any application (except maybe Premiere...) that take benefit of 4 cores, I have more benefit with higher clock speed, I'll check this. Because.... with 2 cores only, you can get 4 x 133MHz increments with Turbo Mode on. 5x with a single core. So...
Bclk @ 166 - 2 cores - Turbo mode on - Native cs @ 3486MHz - Turbo cs @ 4150 = under the maximum TDP for the i7 860.
With such a reference clock setting, I can use the mem @ maximum stock frequency/latency/voltage values, and get only when required some additional clock speed, keeping benefit of SpeedStep and downclocking.
Well it's theory, but I will test it this evening for sure :) With application to monitor real load and compare for example compression time for a video, or audio file. Because this is my daily use: gaming, audio, video... not benchmarking :) And the benefit of a higher clock speed is probably higher for my apps than having 8 thread parallely, I don't know if my apps are able to use so much power.
And here, a screen shot with the 3.5 oc WITHOUT SStep/Turbo/Sstep:
http://free0.hiboox.com/images/0110/...384a2d6b94.png
4Ghz bad? lol :rofl:Quote:
Originally Posted by zsamz_
And now, same thing but with Speed Step enabled, Turbo Mode enabled, and C state enabled, you'll see how this positively affect the CPU behaviour:
4 cores running with OCCT at full load, you get a x22 multiplier, only 1 step increase with 4 cores running:
http://free0.hiboox.com/images/0110/...aa6237ce29.png
Then... you'll see that the GPU Z is reporting higher multiplier, x24 and x25 which correspond to a dual core use, and single core use:
http://free0.hiboox.com/images/0110/...92fbc4a7f3.png
http://free0.hiboox.com/images/0110/...114ca0bf9e.png
Strangely... the RealTemp Turbo monitor don't report the multiplier increase that CPU Z reports... but maybe with so many monitoring tools opened at the same time... OCCT is not happy when starting for example because it's based on CPUID tech for monitoring during stress test ^^
I think this may be a balanced setup. With C state controlling the core status, we can get a dual or single core running turbo mode at maximum possible factor, don't need to disable manually cores into the bios so... balanced mode? When idle... multiplier to x9. Dynamic, balanced, power efficient. I like this one. :) The Vcore may change from 1,18 to 1,48 @ x25 multiplier...
wow scaniris, thanks so much for all the info. thats some great work
lots of insights here
Well I hope this helps, I'm not really an extreme OCer, and I'm mainly looking for balanced configurations. Some articles @ Tom's hardare and PC World are really interesting about OCing the P55 compatible cpus, but they mainly talk about I5 750. The architecture is the same finally and some good indications are given in their reviews, good starting point to try different ways for having a balanced system, corresponding to our personal use.
In my opinion, the OC is also very helpful for cutomizing the system for our own use. Some people see in OC only a competition tool. I think OC is a value added tool for daily use. And if we want to take all the benefit of this new architecture, coming from the Nehalem revolution, we should also consider to use C State, Turbo mode, advanced speed step... the Dynamic Datacenter benefit is huge in enterprise architecture, and we, hobby and private user, are able to access this kind of technology, do you imagine the chance we have? I think it's great to use these new features. We have more performance, yes. Every week I'm so happy to make some Poc with customers demonstrating how Nehalem EP (and coming soon Nehalem EX) CPU beats some Sparc based systems, and some old multi cpu monolitic architectures for less money, less energy consumption, with same (Nehalem EX) reliability and HA features (EX is definitely positionned by Intel in front of the Itanium... in the past it wasn't same story with Dunnington...^^ something is changing isn't it?). We have a dynamic and virtualized architecture, in our home pc. Fantastic isn't it?
I don't think it's a responsible attitude to run 24x7 an OCed CPU. Not because of the CPU lifetime. I don't care. But because of the power consumption. We can play with OC, it's a funny part of this hobby, but we don't need it for daily use. Each watt we are using to increase the clock speed need another watt for cooling... Running a 24x7 OCed system with big graphic cards and be pride of it? Be pride of the power invoice that we receive at the end of the month? Well... I don't share this pride with others running 100GHz and more @ home, behind a ''good'' reason like folding@ home and stuffs like this. I don't agree with that, I mean participate to such programm is very good, but should be done with a responsible system, not with a power eater! Because density in datacenters is more efficient than splitted OCed computers.... I have another PC, Energy star 5.0 certified and partcipate to folding@home and change sometimes to others. I'll never use my gaming system on a 24x7 basis for that ^^
Why do I use benchmark tools? Very easy: for fun, and to check if the performance increase provided by some OC upgrade is really useful or not. This is a decision assistant, to confirm or not a setup. If I have to increase the power consumption to get only 2 or 3 more percent... I'll not validate the setting. :)
So... sorry for this off topic summary of my overclocking approach. Just want to give another point of view about how to use OC embedded features ;)
Interesting perspective...Quote:
Originally Posted by Scaniris
Like "bot@xs" mentioned you have some informative posts and screen shots.
so with this setting you would essentially have 1 core running at x26, 1 at x25 and two more at x22 multiplier. exactly like the turbo mode should function and still achieve 4+ ghzQuote:
Originally Posted by Scaniris
but only 1 core is running at 4+ ghz
1 core running = 5+ / core = max x26 / w bclk = 166 >> max 4.316MHz
2 cores running = 4+ / core = max x25 / w bclk = 166 >> max 4.150MHz
4 cores running = 1+ / core = max x22 / w bclk = 166 >> max 3.652MHz
That's what is reported by CPU Z during real life testing and I suppose that is fitting with the turbo and c state purposes combined together, otherwise how to claim for a x26 multiplier if 4 cores are running, 860 is not designed for it.
I've given up with my 860 and bought a Xeon X3440, batch number L927B244T.. I'll pop it in my other board. hope all goes well!
I bought a core i7 860 and it's not as as I thought that It will be,for OC ofc.I need 1.39 V for 4ghz,Linx stable,VTT is 1.35.Cooler is Corsair H50,temps-33 idle,80-85 full load.
http://i24.photobucket.com/albums/c2...43GHzi7860.png
This is the most I've tried. Not sure if it's stable, but it can run SuperPi and so far hasn't crashed under intense gaming sessions.
Part of the reason I haven't completely stressed is due to the very high temperatures I get. As soon as I get some Shin Etsu X23 thermal paste I'll try and stabilize it.
EDIT: I'm debating whether or not I should keep this chip? I have an i5 750 on the side, but not sure if it's will stabilize with decent voltages.
The results that don't include at least 10 passes of linx are pretty much useless, unfortunately.
Even then the CPU may not be fully stable but I think that 10 passes is good enough for most people here. Anything below isn't stable in my experience. The chips do seem stable with lets say 5 passes, but they eventually error out.
Yes, I still don't feel that it's stable. But under LinX it reaches 85C within the first run. These Lynnfield chips really need WC.Quote:
Originally Posted by Vinas
I agree... these 1156 hyper-threaded chips can run very hot as the overclocks go up!Quote:
Originally Posted by Raul-7
I picked up this i7 860 recently and this is the first overclock I've been testing... running gskill ram at ~ ddr3-2133. Vcore is set to ~1.33v in BIOS (without vdroop/LLC enabled) and the board overvolts to ~1.35v load.
http://i695.photobucket.com/albums/v...039Ghzidle.png
Here is my first P55 build...
http://i139.photobucket.com/albums/q...860_p55ftw.jpg
Still tweaking...the Corsair 8gb of memory is really giving me headaches...If I run it at 1600mhz 9-9-9-24, then the MB only sees 4GB instead of 8GB...If I run it at 1200 MHZ with 7-7-7-20 timings it sees all 8GB?? I think this is an EVGA issue...
what does the rest of your voltages look like?
a bit high on the vcore there for my taste
Try increasing your VTT.Quote:
Originally Posted by managerman
How high vcore is okey on air and then on phase?Quote:
Originally Posted by bot@xs
i try to stay under 1.45, 1.5 at max for benches only, no 24/7 run
That for air or for phase? How much for 24/7 with highend air then?Quote:
Originally Posted by bot@xs
for 24/7 i usually don't use more then 1.4v
1.3625v is intel spec max vcore, i would not want to go to much above that for 24/7 operation if the system is loaded for most of the time .. air or water.
1.45 is the Vmax for Vcore and 1.55 is the absolute Vmax.Quote:
Originally Posted by bot@xs
i stand corrected, it's 1.4v
http://processorfinder.intel.com/det...x?sSpec=SLBJJ#
bot@xs: That's the maximum VID and not the maximum safe voltage.
http://img18.imageshack.us/img18/747/maxvoltage.png
Just finished putting my 860\Maximus III Formula together yesterday. Going to start the OC process tomorrow, will have results then :)
thanks uncleweb, i did not know and am glad you found this. i will apply some of this.
also interesting to note is PLL and VTT here
Uh, 772 MB of RAM being stressed?Quote:
Originally Posted by managerman
As in, none, basically.
I assume that OC is nowhere close to stable, as you need to actually be utilizing some RAM to stress things w/ LinX.
Try max RAM.
Depending on overclock/cpu the only specification that at times seems hard to hold is VTT @ 1.21v maxQuote:
Originally Posted by unclewebb
is it safe tu run 24/7 with 1.38vcore and 1.30vtt..?
Thanks for the info unclewebb. Up until now it was my understanding the max vtt was 1.35.Quote:
Originally Posted by unclewebb
One thing I find interesting is XMP profiles.
I am expecting a barrage of "Don't use XMP you FOOL, that's for NOOBS!", right about now.
Just here me out.
I have no problem with using XMP. I would like to gain a bit more understanding of what exactly the XMP profile changes.
I found this page at Intel's site:
http://www.intel.com/Consumer/Game/extreme-memory.htm
If you open one of the PDF's on the right of that page it lists some memory kits that are "Intel" supported.
Ok, so Intel supports XMP, and my Corsair Dominator GT's are XMP equipped and Intel badged.
When I enable XMP Profile, my VTT is raised to 1.35V. There is no problem with stability. I have run 20 passes LinX and Prime95 was stable on blend for 12+ hours.
So, if Intel will badge and support XMP memory kits, clearly 1.21V VTT can be surpassed and is supported.
What do you think?
I will be posting here and EVGA forums soon with my latest OC results. Nothing amazing, and I might need some insight from some of you. :up:
It has to be higher. My G.Skills can't do 2200 unless I up my VTT to 1.36V.Quote:
Originally Posted by cesthree
I'm surprised that the maximum "safe" Vcore is 1.55V - not complaining though. :)
i'd like to get help from you guys..my i7 860 right now is on its sweet spot @ 3.8Ghz with 1.28v vcore 1.264v on VTT 1.87v on PLL can u suggest any setting for 4ghz??i tried a lot of combinations well all fail in middle of tests..
board is Asrock P55 Pro..with bios 2.2..
any help will be appreciated..Thanks!!
My i7 920 running ~4.1Ghz pumps out ~54GFlops running LinX, but I noticed yours only doing ~43GFlops. Is that normal for an i7 860 @ 4.3Ghz?Quote:
Originally Posted by managerman
Max Static Overclock.
200 x 20. 4.0Ghz @ 1.35V VCore. 1.4V VTT. HT Enabled. Without VDroop.
i7-860 SLBJJ. Batch # L930B396
http://valid.canardpc.com/cache/banner/956893.png
Stopped adding VCore when attempting a 4.2Ghz clock due to temperature limitations.
200 BCLK was possible with 14x CPU multiplier @ 1.35V VTT. Raising the CPU multiplier to 3.6 and above required increased VTT. 1.4 and no less was required for both 3.8Ghz and 4.0Ghz.
Also, 3.8Ghz @ 1.300V VCore was stable as well.
http://valid.canardpc.com/cache/banner/959375.png
http://i309.photobucket.com/albums/k...EIDLE40Ghz.png
http://i309.photobucket.com/albums/k...DMARK40Ghz.png
Here is my thread at EVGA Forums.
http://www.evga.com/forums/tm.aspx?h...mpage=1#120270
EDIT: Note about temps. Screenshot WITH 3DMark results had Realtemp reset. Screenshot WITHOUT 3DMark shows temps reached while running Prime95 Blend and LinX with ALL memory selected.
Quote:
Originally Posted by mngdew
http://i139.photobucket.com/albums/q...rman/42860.jpg
I just ran a quick Linx @ 4.2Ghz. Now at ~52GFlops....much better...
-M