LoL. Nope. I did a reset on Temperatures. after starting Prime.Quote:
Originally Posted by kpablo
Update the picture with New Stable settings at 3.9 Ghz (205x19), QPI : 1.3125 V
Printable View
LoL. Nope. I did a reset on Temperatures. after starting Prime.Quote:
Originally Posted by kpablo
Update the picture with New Stable settings at 3.9 Ghz (205x19), QPI : 1.3125 V
figured i'd contribute, havent primed it, but so far so good, im sure its stable, not the first time I run this clock, just flashed my bios to a new one so i am trying this out for now.
Batch 3839A403
http://img.techpowerup.org/090127/Capture015.jpg
I was able to run 3dMark06 @ 4 Ghz. But Prime would fail in less than 30 mins.... lol. I guess my batch doesnt like 4+ mark.
But my rig is Prime stable at 3.9 on 1.25V Load with QPI : 1.3125.
icecold, what's your batch #?
Sigh, Prime blend stability is tricky on high Nehalem clocks if you are trying to run the memory fast also. You may need to tweak timings, add LOTS of VTT voltage or in some combinations of settings increase Vcore by one notch past what's stable in LinX! I think the cores can show instability once you actually feed them enough data to saturate them. This may be a Vista/Windows-7 64-bit thing only.Quote:
Originally Posted by icecold316
I think I was able to get 4.2ghz to pass LinX x 20 on air only because I was running the Uncore at exactly 2x the memory which chokes off performance slightly as shown in my test data. I could bench all I wanted to with 3400mhz and 3600mhz Uncore @ 4.2ghz and I saw gains at both of these increased Uncore clock speeds. It was very hard to get LinX stability @ 4.2ghz on air so I didn't even want to deal with the Prime blend crashes after an hour in again. I will try Prime again once I get my first WC loop operational.
3841A431Quote:
Originally Posted by anzial
My Memory timings are 7-8-7-20 on Dominator (8-8-8-24).Quote:
Originally Posted by JWMc
I dont like to use excess Voltages than Intel recommended: QPI : 1.35. So I am using QPI: 1.3125.
211x19 didnt work well at all even at 1.4 CPU V.
Currently, testing 210x19 = 3990.
Icecold316, have you tried 190-191 @ 21x multi (turbo)? I see you have nice memory but it's possible that the IMC on your chip isn't good enough for it at those bclks and memory timings.
I'm starting to wonder if my chip simply can't go past 200 bclk without obscene amounts of VTT. I needed 1.395v for Prime blend stability at 20x200 with HT enabled with only 2 memory modules.
Just tried 190-191 @ 21x multi (turbo). Passed Linx @ 50 Iterations at 1.328V Load/1.344V Idle with QPI : 1.335V. Temperatures are too high though 81 C :(
Its 5-7C more that 205x19 = 3.89Ghz.
http://coding-forum.com/linx_39ghz.jpg
Awesome! Those temps are fine. You simply need at least water cooling to get an i7 to 'good' temp ranges at 4.0ghz and beyond. I'm pretty happy with 3.8ghz on air right now but it's hitting high 70s in a warm room already. My WC planning has already begun..Quote:
Originally Posted by icecold316
Batch 3839A606.
4.0 @ 1.325V. Prime95 blend stable for 6+ hours. First attempt was at 1.2000v (prime95 reboot). Second attempt (successful) was at 1.325v. Plenty of room to work. Will keep my fingers crossed for 4.2Ghz+...
http://www.xtremesystems.org/forums/...postcount=2464
-td
OK, now I'm really wishing I had spent more time on 4.0ghz testing when it was super cold with the board running in the motherboard tray sitting on the table. I got 4.2ghz (LinX) stable at 1.408v load in the best possible conditions I can get on air at my house barring a natural disaster. I must try 1.325.... :yepp:Quote:
Originally Posted by 286SX
My Gig board seems to like the 191 @ 21x but i need to prime it or something.Quote:
Originally Posted by icecold316
ok what batch seems to be the absolute best hands down. I am going to sale the 920 i have now and get another one because i want to be able to run alot less vcore!
Seems to be YMMV overall, but 3836A and 3841A seems to be most often doing well. My i7 920 3841A does stock voltage and stock cooling comfortably at 3.6Ghz. Some 3841A's don't fare as well, some better. There is no real "absolute best, hands down" batch yet, too much fluctuation per batch.Quote:
Originally Posted by liftedcj7on44s
If you are looking for 3.8 Ghz on low voltages then 3841A is an Excellent Batch. But if your primary target is 4 Ghz+ on low voltage, you may want to look onto some other batch.Quote:
Originally Posted by liftedcj7on44s
My I7 #3841A431 @ 3.8 Ghz (19x200) @ 1.2V; QPI : 1.275V; HT ON. Its prime and linx stable. Temperatures on air @ 25C room temperature.
3838A543, lp ut, TRUE
http://lakesidepc.com/3838A543.jpg
If I have read good, I need to sell my 920 batch #3838A*** now ? box is not open for the moment.
I would hit ~4.2-4.4GHz minimum.
Edited my other post with updated 4.0G info. Prime blend 11 hours successful at 1.3125v. QPIv at 1.225. DRAM at 1.6v. Everything else on Auto. Going to try 1.30v later today.Quote:
Originally Posted by JWMc
http://www.xtremesystems.org/forums/...postcount=2464
-td
Hey guys,
today I've picked up a part of my new system and also I've received my CPU.
It's a 3841A628 but when I search this thread I can't find matches :(
Anyone got news for me? Thanks!
You have a very nice Batch to do 4 Ghz on 1.3125V.Quote:
Originally Posted by 286SX
I don't know if its the 3x1Gb ram on 32bit system helping you to run stable on such low voltages.
Yes, very good news indeed! I too have a 3841A chip, and it runs really nicely. Stock voltage and cooling takes me up to 3.6Ghz without a sweat. But it does seem this batch is hit or miss, some like me report decent results, while others get not so decent results. In fact, my chip was only 123 chips in front of yours on the assembly line from this same batch, a 3841A505 :DQuote:
Originally Posted by Astratuner
not sure if if we can do it, but would also be nice to know what mobo's everyone is using.
EVGA x58 here and loving it.:up:Quote:
Originally Posted by INFRNL
furthermore to my last post stating my mobo, here is my latest stable config. havent tried any higher with the new BIOS, also a 3dmark run with cards at default clocks and a couple of programs running at this clock.
http://img.techpowerup.org/090129/Capture017577.jpg
http://img.techpowerup.org/090127/Capture016.jpg
Wow! I just checked the OP again, and the chart was posted with all the OC's in this thread.
Dang Guys, look at all the 4GHz OC's on these things. That is outstanding!
I'll be updating mine in a few days to a week. I'm gonna start working on fitting my watercooling stuff, and my i7 rig will be down for a few days. After that i need to do some testing and bench runs and see if I can tweak it a bit more, and then I'll post what i have on water and the temps. It's gonna be much better than the stock cooling I was using. :)
You have a truly outstanding chip considering your results were at 89-93C. Try disabling HT and see what it'll do, could be a record ! And be sure to increase Qtt up to about whatever Vcore you are using.Quote:
Originally Posted by 286SX
my results so they may be added to the list eVGA X58 i7 920 @3.9 186*20+Turbo Batch# 3937B367 with 1.3625v HT ON
Zalman 9700 HSF temps are with Lin X and P95 running simultaneously.
http://i530.photobucket.com/albums/d.../39_stable.png
It's kind of counter-intuitive, but having both P95 and LinX running at the same time won't produce the same amount of stress/heat that LinX would alone, as the cores are constantly switching between tasks... P95 isn't as stressful. It's like having background processes running during stress testing... the less stressful process will cause the temperatures to go down as the CPU is spending time running a less stressful process.
does anyone else besides Nemesis have a B317? Thats what I have and looks like it might be a little weaker than the B194. I havent gotten my system up yet as I am waiting on ram...be here tomorrow! I am hoping to get at least 4ghz on decent voltage like some of the other chips
This isnt my experience although the logic isnt flawed. However, I can run 20 loops of linx 10000 problem size with out issue but as soon as I add a blend run of P95 at the same time instability is shown.Quote:
Originally Posted by Loser777
I think the weakest part of the system is the IMC and a small LINX run doesnt show ups the IMC weaknesses that well.
Blend does stress the IMC and with the small Linx run stressing the CPU - shows those weaknesses very quickly.
The other way to test for stability, is to run a larger Linx problem, 17000 minimum. Most of the failures on Linx are ebtween cycles of calculations (watch in task manager), you can see it isnt temp that killing the system, its the reading and writing matrix data from memory for the next calculation run.
Those large linx calcs really hurt and my overclocks using that as a bench for stability are way less than any other solution - it depends what you want at the end of the day.....high numbers or stability.
Ian
Ps I can complete a 500 cycle run of Linx 10000 problem size which wont complete 2 runs at 17000...its that much of a delta for me.
Would love to see temps of a 20 run of Linx @ 17000 - if our system can handle it.
Very nice, I did try 1.3125v load @ 3.990ghz (190x21), 6GB, HT enabled, guess what!:Quote:
Originally Posted by 286SX
http://img218.imageshack.us/my.php?i...12vht6grf0.jpg
Yep, same result pretty much. I didn't do long term Prime blend testing yet but the vCore is verified for sure.
I love this chip I got!!!!
Vikingboy, you are messing up your vCore testing by simultaneously running Prime with LinX or something else to stress the CPU as Loser777 said. I know it takes forever but you really should use only LinX or OCCT to find vCore and then use Prime blend to make sure you have enough VTT/vDIMM/relaxed enough timings.Quote:
Originally Posted by vikingboy
Yea I noticed that about LinX. You will fool yourself if you use a low problem size. I don't know why LinX needs to use as much RAM as possible relative to the total to load the system properly but it does. It's confusing because we know that LinX itself does not stress the memory system as much as Prime blend.
I agree though, you need Prime blend to test IMC quality which is also a goal of this thread (I hope). :up:
Fantastic JWMc, I was able to match same setting of yours at 3.8 Ghz @ 1.2V after I moved from BIOS F4r to F5e. That BIOS helped me drop voltages by 0.05V from 1.248V @ Load to 1.2V @ Load. I am pretty sure, my processor could match you voltages on 3.99 Ghz too. Seems 3841A is a very good one.Quote:
Originally Posted by JWMc
Outside the case, my i7 went above 70C @ 3.8 Ghz, but inside the case its running at 74C in Linx with room temperature at 26C. I can't imagine the heat at 3.99 Ghz when it will be inside the case at 26C Room temperature( probably in 90's).
Any temperatures above 80C, seems a bit high - as my PC turns into a heater thanks to CPU, Memory, Gtx260 and NB all contributing to the heat.
I was getting "IRQL not less or equal" error with Green Lan Feature enabled. I disabled that feature and the problem is Gone.
I'm sure it could, our chips seem like they might be almost identical. Are there many 3839s that are known to OC poorly? I've seen people say their 3841s didn't do well also.Quote:
Originally Posted by icecold316
About lots of chips hitting 4ghz on the Xtremesystems forums. I bet that's because we know how to test things properly and present/compare data honestly. I bet just about any i7 can hit 4ghz on air but many of us use water and many noobs on air aren't altering the test environment properly to see what it can do (super cold ambients).
My in-case temps at normal ambient (25C) went WAY up compared to my early testing in the cold. But I have a bad situation where I only have one exit fan for the heat. I'm using a Sanyo Denki 101 for the single exhaust fan though so I can crank it up if I want to. Entirely new chassis and WC plans are in the works.Quote:
Originally Posted by icecold316
I was willing to push the CPU to 8-9c from TJMAX on air, no more. This was also only just to see what the chip could do so I'd have more information to decide on building my first WC loop or not. I'm going for low 60s in Real Temp @ 25C ambient for my max 24/7 OC on water, whatever that turns out to be.
I think I may have glossed over this in the Gigabyte X58 board thread. If this helps stability it could be important that everyone learns this!Quote:
Originally Posted by icecold316
JW,Quote:
Originally Posted by JWMc
Can you clarify something for me as I dont' have much experience with the newest chipsets and CPUs WRT overclocking.
How should I be using LINX and Prime to confirm the best system settings. Honestly, I completely skip LINX and just try to run blend for 6+ hours.
As I'm working on getting a low(ish) voltage 4.1/4.2 working, is the "best" method to set CPUv first, run LINX to see if it sticks, then run prime blend to see if it's stable.
Questions: if LINX dies, I should up the CPUv first? Will changing PLL or QPIv help the LINX stress?
If LINX passes, but prime dies, does this mean PLL or QPI should be changed first? And what about those crazy skew settings? Will they really help...
Thanks!
-td [BTW, nice ride. You should try the track instead of autocross!]
I have no clue when to alter PLL voltages or by how much. LinX stability needs (sometimes a fair bit) less QPI/VTT than Prime blend for sure!Quote:
Originally Posted by 286SX
AFAIK, LinX is the best program out there to find your true multithreaded stable vCore (or manually running Linpack of course). If it crashes in LinX but not Prime blend (I'd be surprised), you definitely need to up the load vCore until it goes up to the next closest step above what you were using, at least. LinX is just great because if you're not even close on vCore it will crash quickly and consistently so. I've only once been able to find settings that could get LinX to report an error and not BSOD me when the system fails.
Once you get it to pass LinX, vCore should be verified. However even LinX can pass with extremely borderline low vCore and then Blend will fail because you needed that one more step up on the load voltage as reported by CPU-Z. BTW I'm up to almost 4 hours on Prime blend with all the same settings, hell yes!
I have a guess that the strange behavior I was seeing when I needed one voltage bump more for Prime blend vs LinX was at 20x200. The system is MUCH happier at 190x21! :clap:
I love her. I have gone to SCCA Solo2 Nationals once and won some (pretty meaningless but still) divisionals. I've been taking a break from it for a while though. I did do a track day once but I wasn't willing to really push it in the corners that hard. It was at Roebling Road Raceway in Georgia. At the moment I'm riding on a hardcore autocross suspension setup: KW-V3 double adjustables with piggyback reservoirs in the front, 12k/10k F-R rates. PM me if you wanna geek out about it some more. :) I promise I won't clutter the thread up with car talk. :p:Quote:
Originally Posted by 286SX
Yes, the B317 seems a bit weaker than the B194 but it did hit 4GHz prime stable @1.4v and 1.31vtt so its still a solid chip and better than some batches. Highest I've had is was 4827MHz on SS phase 1.6vore & 1.6vtt/qpi. There are others here with the same batch who've pm'd me so I'm sure they will post results. It's a good batch, just not golden.Quote:
Originally Posted by INFRNL
Quote:
Originally Posted by Loser777
I retested with Lin X alone I've done a 20 pass test before with problem size at 17000 just never took a screen shot, also I am running p95 blend will post a pic once I get 2-3 hours minimum under test.Quote:
Originally Posted by vikingboy
http://i530.photobucket.com/albums/d...linx20pass.png
Could you (cky2k6?) post the raw data spreadsheet? It's kindof hard to make any conclusions without being able to sort and filter the data. I'll be buying my 920 soon....
JWMc,Quote:
Originally Posted by JWMc
Your results speak for themselves...Why don't you disable HT and see what your chip is capable of?
I may as time goes by waiting for WC parts to arrive and also learning how the hell it all works when it does. Once it's under water I'm definitely going to play with it until I've tested every limit!Quote:
Originally Posted by roller11
How about the Google Spreadsheet Data sheet for Sharing everyone I7 Overclock : http://spreadsheets.google.com/ccc?k...fnE-v78I7tODQg
THAT is a brilliant idea! Hmmm, I shoulda thought of it...it is kindof my job. :eek:Quote:
Originally Posted by icecold316
:clap:same batch as me :up:does this at 1,64vcore http://valid.canardpc.com/show_oc.php?id=469425Quote:
Originally Posted by NBF
Holy cow! :shocked: I fear I'm not man enough to step up and try voltages that high on air. I will however be doing it on water. :devil:Quote:
Originally Posted by PytonOrm
Wow that's good news indeed.Quote:
Originally Posted by moshpit
Hope mine does well to :p:
What do you mean with the good and bad results? Different programs or different users wit the same CPU batch?
Only half hour for now, more to come. 3835A804 under TRUE:
http://img.photobucket.com/albums/v292/Viss1/3835A.jpg
I just tested with exact same setting of yours. Did 10 runs of 17000. It passed.Quote:
Originally Posted by JWMc
Only thing is the temperature was 87/85/86/79 after the run. On a completely closed Case (I shud have kept one side open) Room ambient was 25C.
Any way to paste the info into it? I've got excel spreadsheet with with the info from this thread + some updates.Quote:
Originally Posted by icecold316
I've been experimenting with my 3836B043 under water. 3.8ghz (21x180) seems to be stable @ 1.22vcore (4 hours of prim95). I'm using Biostar mobo with default bios, should prolly try new beta bioses and see how it goes since 4ghz and above require much more tweaking than leaving everything except vcore and vdimm at auto/default setting lol :D
I was not waiting for OCs like these on Corei7 CPUs! These are great results!
Congratulations!
Here the 20 cpu multi is a no go too.
For now I have my i7 920 like this :
http://img187.imageshack.us/img187/7...iai7920ni3.png
The mem's are still with relaxed timmings.
Does anyone knows why the P6T Deluxe V1 and V2 have as 36x as the minimum QPI Link value ?? Only in Auto I get a smaller QPI multi!! Weird.
Shouldn't the QPI Link be < 4000MHz ? I only get this in Auto.
1.3125v load @ 3.990ghz (190x21), 6GB, HT enabled, both LinX x 20 and Prime Blend 11 hour verified :D:
LinX: http://img218.imageshack.us/my.php?i...12vht6grf0.jpg
Prime Blend: http://img228.imageshack.us/my.php?i...12vht6gcc9.jpg
Thanks JWMc for doing the hardwork. Since yours is stable, it simply implies mine will be Prime stable too. I dont like to run such stuff for 11 hrs.... or my home will be as good as SuanaQuote:
Originally Posted by JWMc
I tried 4.2 Ghz @ 1.36V // QPI : 1.335 just for fun .... 3dMark (5 runs stable :ROTF: )
Results :
http://www.coding-forum.com/4200mhzprime.jpg
http://www.coding-forum.com/4200mhz3dmark.jpg
Updated my max OC HERE.
4085 [215 x 19] @ CPUv 1.3125; PLLv 1.8; QTIv 1.30. This is only LinX 20 tested, not Prime95. [Temps 98/97/93/91 - OUCH!]
4066 [214 X 19] @ CPUv 1.3125; PLLv 1.8; QTIv 1.30. This is only LinX 20 tested, not Prime95.
4047 [213 X 19] @ CPUv 1.31875; PLLv 1.8; QTIv 1.3. Also LinX 20 tested, not Prime95.
4020 [201 X 20] @ CPUv 1.31875; PLLv A; QTIv 1.225. Prime Small 8 hours.
Anything around or over 4.1Ghz requires better cooling than I have [Cooler Master V8]. But, LinX does run without crashing at 4104hz [216 X 19]; CPUv 1.31875; QTIv 1.325; PLLv 1.8; DRAM 1.62. It got up to 99 degrees on the 6th LinX run, so I turned it off. I think it would go higher with better cooling - especially since I can hit 4.1 with under 1.325v.
Should've bought the bigger cooler! Oh well. I like the way the V8 looks, and I can run close to 4.1Ghz on it...
**NOTE** interestingly, in prime blend, temps are 10 degrees cooler than LinX. I may be able to get a higher prime blend stable OC than LinX simply due to temps...
Does that still count?? ;)
-td
Icecold316...how do I enter my data into your Google spreadsheet?
Just type it in ....... it saves Automatically.Quote:
Originally Posted by roller11
i7 920 Batch 3838A755, HT+Turbo on, details in sig.
fall wind nice clock for the voltage, I do 1.305v at 4.0 GHz, seems like our CPU's are similar in that area. :up:
This is perfect. I wish I had thought to suggest it first. Your columns look great and plus you have a sheet for each model. I really like what you came up with icecold. :up:Quote:
Originally Posted by icecold316
Is there a way to update one of these spreadsheets sort of like a WIKI where we are trusting people not to bork up the existing data when they modify it? I think we can trust people on this forum enough to work it this way so we can keep growing the spreadsheet without relying on one person to do it. Besides it should have version control anyway so we can roll it back if someone blows it up.
Also I think we should be allowed to enter as many data points (rows) as we want for one chip. Such as: 3.8ghz, 4.0ghz, 4.2ghz etc so we can see how they scale as well. We can easily get carried away trying to make an uber spreadsheet that has everything you could possibly want but we can always add/combine data later.
I really like the 'Testing Method for Stability' column you made. I was going to suggest a pretty rigid (but not too excessive) set of criteria beyond what the OP stated to meet to have your data added but we can just strongly encourage certain testing methods and hope to see fairly consistent data in this column.
I'm going to tinker with Google docs for a bit..
yeah, maybe you can make some kind of write-rights password and distribute it via PM?
3836B043
http://img84.imageshack.us/img84/427...me95wr5.th.jpg
Runs hot, although it's under water - GTZ+PA120.3+DDC3.2&XSPC top. Linx bumps up the temps to mid 70C (77/75/75/72), so it's 5C hotter than prime95. I fault my fans, and I'm running them in pull config w/o any gasket or shroud, should try them with a shroud and in push I think. GTZ orientation might be at fault, as well. room temp around 75F
Is that an ES or retail CPU?Quote:
Originally Posted by fallwind
EDIT: just finished 20 loops of linx, 25k problem size (5gb memory), no issues. I think this oc is pretty stable :)
EDIT2: dropped vcore another notch, CPU-Z show 1.312, running LINX problem size 10k no issues after 20 loops, problem size 25k, 5 loops and no issues so far . Temp dropped 5c!
Well guys I think I've got a decent spreadsheet going now, use this URL to view it:
http://spreadsheets.google.com/ccc?k...oKvbbHZKXI7aJg
and this URL to access a convenient form to fill out and add a data point for us!:
http://spreadsheets.google.com/viewf...oKvbbHZKXI7aJg
Also here's a link to a summary page:
http://spreadsheets.google.com/gform...gridId=0#chart
Wow, great job! :clap::clap::clap: The only problem I have is when I try the summary page it gives me a 403.
As far as i can see batch A or B for i7 920 doesnt make any difference. Both can do 4+Ghz in low volt if you r lucky right?
yup, although definition of "low volt" varies from person to person :D
4Ghz @ 1.3v is considered low volt right? :rolleyes:
I certainly hope so since that what it takes to get my 920 to 4ghz :) Admittedly, with default settings on everything, vcore jumps up to 1.2 in CPU-Z... go figureQuote:
Originally Posted by ChaosAD
If you want to add my 920 to the front page:
Cooled by Mugen 2 its @ 181x21 1.27vcore QPI/VTT@1.255 Ram @ 1440mhz 3836B043 is code HT ON
Stable 36hrs of WCG on all 8 "cores" LinX stable and Prime95 stable 5+ hrs each.
Max temps around 68C
Why didn't you try 4ghz @ 1.31? Works for me ;)Quote:
Originally Posted by GenTarkin
cuz Im like at the point where I dont wanna know what the chips max is right now in case I get dissapointed lolQuote:
Originally Posted by anzial
I'm pretty sure max is higher than 4.2ghz, although I didn't try. 4ghz is all I wanted really, don't see any point going for higher :)
yeah Im not sure my PSU will even be able to handle pumpin that much power to the CPU alone haha!
I dunno, I'm using BFG 550ES, works fine. Although I do have just one videocard, one hdd and a bunch of fans+pump
Important:
I haven't been updating this thread for quite a while, because I haven't had the time lately with attending school, but with your cooperation, the chart on the first page will be updated once a week with any new edits that have been made to the spreadsheet by members who own the i7. Be warned that if your entry does not have the important fields of temps attained with a stress utility (at least prime 95 or linx, no superpi temps...) or voltages included in your entry, it will be deleted. Here is the link for the spreadsheet http://spreadsheets.google.com/ccc?k...Pj3I84YAIFaRaw
According to cky2k6 spreadsheet it seems that batch B clocks better with less volt. Am i right or do i miss something?
Too small a sample to make this sort of conclusion, imho ;)
Core i7 920 3836A874
Gigabyte EX58-UD5 F5
21x191
1.325 bios - 1.296 idle / 1.280 load
http://forum.crazypc.ro/attachment.p...3&d=1232561232
This was a very early on assumption of the i7's but about around a month ago, people were also finding that 36A's and 41A's were also great clockers with low voltage.Quote:
Originally Posted by ChaosAD
3836B043 is a chip I and another person on this forum has, and they are not that great as the earlier B chips.
UPDATE: my chip is now stable @ previously posted settings but @ 182x21 for a final clock of 3822mhz @ the same voltages of 1.27v
I have not tried further lol....
920 #3836A394
http://img266.imageshack.us/img266/4...x20htofkz4.png
What cooler are you using and any other voltage adjustments or just vcore?Quote:
Originally Posted by Andryke
I think you are wrong, I'm running this chip at 4ghz with 1.31vcore, so it's an excellent oc'er, imho.Quote:
Originally Posted by GenTarkin
CM Z600 + 2x120mm Antec TriCool ( ambient @ 23C )Quote:
Originally Posted by GenTarkin
QPI/VTT : 1.375V
IOH : Auto
DDR : Doesn't matter
CPU PLL : 1.86V
I haven't tried with lower VTT/PLL voltages, when i'll have some spare time i'll test that too.
Cheers:up:
I picked up a 3841A437 tonight. I only see one other 384 on this thread and it took 1.4v to do 4ghz... is this a fairly new batch or something?
Really? what are your voltages in bios? and uncore/mem settings?Quote:
Originally Posted by anzial
Thanks
QPI is 1.3v, CPU PLL 1.8, CPU VTT is 1.36, and CPU itself shows as 1.312 in cpu-z (not sure if I can believe it, since it does not change from idle to load, although rarely under load it drops momentarily to 1.296). I have a biostar mobo and vcore is only set relative to some value, don't know what that is, probably stock voltage or something, in my case it takes +0.08v. For the same reason, I don't have any control over uncore, according to memset it's 16x, and memory I keep at 2:8, all automatic timings, 1.64vimm. Last, and most important, cpu is at 21x and 191bclk, and not 200x20, the latter is completely unstable. Hope this will help you to oc' your cpu to 4ghz as well :)
Ok, the best i can is 19x200 @ 1.28v core and 1.28 qpi voltage. Everything else is auto.
Is there any way to get lower vcores? I mean, with what settings can i compensate a lower vcore? I see people getting 3.8 with vcore values lower than 1.28 but at the same time i'm really noob at Oc'ing so i don't know what settings to change in order to compensate lower vcore values.
My Batch # 3839A569 and i'm using a P6T Deluxe with latest bios ( 1102 ) and 6Gb of Dominators 1600 (C8 ).
http://img.photobucket.com/albums/v3...dot8stable.jpg
where did you get it?Quote:
Originally Posted by DamienKC
microcenter locally for $230 ;DQuote:
Originally Posted by cambrian
ordering my ram and mobo today, most likely the ones listed in my sig.
http://www.newegg.com/Product/Produc...82E16820231245
http://www.newegg.com/Product/Produc...82E16813128375
they're both light blue and white, too so it'll look nice :up:
expect some results with my true by next weekend.
http://images2.hiboox.com/images/060...863a7dd566.jpg
3837A904 i7 920
No HT, and no more than 3400Mhz on the Uncore :/
These two fonctionnalities of the Nehalem need more than air cooling on the cpu i guess :p:
Still no HT and still again not more than 3400Mhz uncore:
http://images1.hiboox.com/images/060...0c65124717.jpg
This OCcct graph shows the hotest af all cores.
I got three 3841A43x from amazon.com. Amazon charges a little more, but worth it because of their return policy in case you get a weak chip. How did the chips do? All were duds.Quote:
Originally Posted by Damien
I guess we'll have to see :(Quote:
Originally Posted by roller11
I tend to get pretty lucky with chips or i know what im doing, i can't really tell. I had one of the best e8400s around (did 4ghz stable damn near stock volts, benched at 4.5, all on air). did you try different motherboards?
and what is dud by your definition? i'm just wanting a 4ghz 24/7 overclock on around 1.4v tops...
Total bummer. 3841A505 took me up to 3.6Ghz on stock voltage AND cooling. Goes further then that as well, but temps break into the lower 70's under load at that point so I give up there and stay with 3.6 for now.Quote:
Originally Posted by roller11
Here are my first results on a 3836A875 batch. I think it does a damn well job considering that I didn't fiddle around much with the settings. I've everything on some reference voltages and started OC'ing (all within Intel specs). My current max. RAM speed with these voltages and timings is around 1780Mhz. With RAM at 1720 like in screenshot I'm still able to tighten timings and lower some voltages. Voltages used in bios:
Vcore: 1.35v
CPU PLL: 1.90v
QPI/DRAM: 1.35v
vDRAM: 1.64v
CPU spread spectrum disabled
PCIE spread spectrum disabled
Everything else on AUTO
HT disabled
Turbomode disabled
http://img266.imageshack.us/img266/3...0ramog9.th.jpg
On Anandtech they told in an article that batch 3835, 3836 and 3841 are the better OC batches. So you could be lucky, I gues.Quote:
Originally Posted by Damien
Some jackass decided to screw around with the spreadsheet, so I uploaded the one from my hd again. If it gets messed up again, I just won't bother with this anymore. And for those still posting your results, don't forget to enter it into the spreadsheet if you want it to be included in the list on the front page. http://spreadsheets.google.com/ccc?k..._RqTL5QA&hl=en
added my 3836B to it =)Quote:
Originally Posted by cky2k6
I want to save but I can't. You need a google account or not? I don't have one, damn it.
I guess you do, which is pretty weird, since I set the option to let anyone edit without signing in...Quote:
Originally Posted by Pisklink
Who screwed it up? Lemme at 'em. :frag::flame::slash:
I selfishly want this so I can make an informed buying decision in a few weeks.
:D:kissbutt::peace:
I think I've got a 3836A772. I'll have to look and see to be sure (took a pic, but it's not on this comp). Here is where I am:
http://img160.imageshack.us/img160/5130/4ghzrv9.jpg
How hot is too hot?
You're within a good range for benching and stability testing. These chips can take a lot of heat, but I'm personally trying to stay ~75°C load for 24/7 use. Right now, this has limited me to 3.6GHz on stock cooling, but once my damn retention clip arrives from the States so that I can hook up my Vendetta 2, I expect I'll be able to do ~4.0GHz with those temps. My chip will do 4.0GHz+ @ ~1.3V load, but my temps were ~90C° after an hour of Prime.Quote:
Originally Posted by cardnut99668