Thanks for the input. I'm going to try and push things more as the weekend approaches. I'm hoping I can hit 4.3. We'll see.
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Thanks for the input. I'm going to try and push things more as the weekend approaches. I'm hoping I can hit 4.3. We'll see.
I picked up a 3841A507 from Frys the other day. So far so good. Looking forward to seeing how it will do above 4.0
http://img110.imageshack.us/img110/5955/newol8.th.jpg
You correct that everyone can edit the file. I just noticed that it actually save automatically while I thought I had to go to "file" en press "save". So this is nog the case, just put in your settings and your fine.
Btw what voltage do you guys report in the spreadsheet, bios, idle or load?
I've actually dropped my vcore since last I posted. Now running 3.6Ghz on 1.21 vcore set in bios, 1.15 shown in Windows under load. Managed to shed another couple of degrees under load for my effort. I'm now only .02 volt above VID, next goal is to drop it to VID level and see if I can IBT with that low of voltage stable.
HT on, Turbo off. HT on is a must or I've reached my OC/voltage limit as far as I'm concerned. If I have to turn the HT off to get voltage down or clocks higher, then I've gone too far. That's a feature I'm just not willing to give up :p
I should add that in over a decade of being a tech, I've never owned an HT capable chip, and until i7 came out never cared. Now HT is actually kinda cool. It's not a bandaid for a broken architecture, it's actually a useful feature. Giving that up just to get a higher OC or lower voltage would be like chopping off one of my hands now.
I updated my version of real temp and my max temps went up. I think I need to remount the HS.
http://img3.imageshack.us/img3/7042/4ghz1688vt4.th.jpg
When I got your version 2.90 my temps went up too!
Download the latest one below, my temps actually dropped a bit more with version 3.00 :up:
http://www.techpowerup.com/downloads...Temp_3.00.html
Does anyone have any data on their 920's max bclk at the stock voltage?
Yesterday i tested a 3842A938 pack date 15/01/2009
total crap and the worst i ever tested 4GHZ required 1.45v
so you are warned...
3839A589
Still tweaking my 24/7 setup...
http://i678.photobucket.com/albums/v...otran/edit.jpg
Ran stable through linx 20 runs. 208bclk, ht off, vcore at 1.38v in bios and all others auto. 8-8-8-24-1t ram timings. Maxed around 66C during linpack, under water. Now if only I could afford a ss and some dominator gt... Batch number is 3838A557. Ordered from tigerdirect.
http://valid.canardpc.com/show_oc.php?id=501042
http://i42.tinypic.com/1z3842g.jpg
http://i40.tinypic.com/op64k1.jpg
http://i42.tinypic.com/hvs6rs.jpg
I recently discovered that my voltage readings in windows were all incorrect and were over by aound .05v for each reading seen in smart guardian as well as cpuz in windows. So I need to update my overclock voltages on my two chips.
i7 920 3837B317
DFI DFI LanParty UT X58
BFG 280TX SLI
3GB Corsair Dominator TR3X3G1866C9DF
Creative Sound Blaster Live Platnium
Tagan /\+ CS Black Pearl WCR
Antec TruePower Quattro 1000w
Swiftech's Apogee GTZ
Laing DDC-2 w/ Petra'sTech DDCT-01s Top
Thermochill PA120.2
Dell UltraSharp 2407WFP
Logitech Z680's, Logitech G15, Razor Copperhead
4GHz Overclock
1.35v bios 1.408v idle & load windows 1.365v idle 1.356v load measured
cpu vtt/Qpi 1.28 bios 1.31v windows 1.26v idle 1.275v load measured
http://img6.imageshack.us/img6/588/8...vcorlm0.th.jpg
Also the i7 920 3838A824 entry was measured at 1.28v load & 1.243v cpu vtt/QPI for the the 3.8GHz on air instead of 1.32v 1.29v cpu vtt qpi.
Got identical batch i7 920s = 2x i7 920 3836A756 interesting comparison especially how they handle CPU VTT and max bclk!
*** Prime95 ***
i7 920 3836A756 #1
- @3815Mhz at 1.232v HT enabled 4+ hrs (my 24/7)
- @4009Mhz at 1.328-1.344 HT enabled 1+ hr (my video encoding config)
i7 920 3836A756 #2
- @3815Mhz at 1.264v HT enabled ~40mins before system reboot (didn't test further)
*** Max Super Pi 32M ***
Both cpus have similar max HT enabled 32M Pi ceiling of under 4500Mhz. HT needs to be disabled for greater than > 4500Mhz on air cooling.
i7 920 3836A756 #1
- @4300Mhz HT enabled at 1.488v
- @4410Mhz HT Enabled at 1.520v
- @4554Mhz HT Disabled at 1.552v
- @4610Mhz HT Disabled at 1.600v
- @4652Mhz HT Disabled at 1.616v
i7 920 3836A756 #2
*** Max BClock ***
Definitely this second i7 920 3836A756 is better than my first one in terms of max Bclock and low CPU VTT usage.
i7 920 3836A756 #1
- max memtest86+ bootable bclk = 224 requiring 1.58-1.60v CPU VTT
- max super pi 32m bclk = 222bclk (without IOH/ICH voltage tweaks) & 228bclk (with IOH/ICH voltage tweaks) requiring 1.60-1.61v CPU VTT
- max CPUZ Validation = 230bclk requiring 1.60-1.63v CPU VTT
i7 920 3836A756 #2
- max memtest86+ bootable bclk = 229bclk requiring 1.40-1.48v CPU VTT
- max super pi 32m bclk = 227bclk (without IOH/ICH voltage tweaks) & ???bclk (with IOH/ICH voltage tweaks TBD) requiring 1.48-1.50v CPU VTT
- max CPUZ Validation = 231bclk requiring 1.50v CPU VTT
TBD - Haven't tested 2nd cpu with IOH/ICH tweaks yet
System specs
- 2x i7 920 3836A756 #1 and #2
- Thermalright Ultra 120 Extreme + LGA1366 Bolt Thru kit + 2x 120x38mm Scythe UltraKaze 2000rpm 87cfm fans in push/pull
- DFI LP UT X58-T3EH8 R.A51 - 01/23 beta bios
- 1KW Corsair HX1000 psu
- WinXP Pro SP3 full nLite updated hotfixes / Windows 7 beta dual boot
guess some people are too stupid for this to work... i could require login, but then it wouldn't let people edit who don't have a google account, and some who mess the sheet up are google members too... long story short, you guys can keep posting, but there won't be any updates to the list on the front page.
It's so easy to correct or update the list, why no more updates on front page???
http://img.techpowerup.org/090207/ba..._Page_1657.jpg
http://img.techpowerup.org/090207/batch list_Page_2.jpg
Great thread, but if no front page updates someone else should take this over. People looking for the best batch are going to have to sift through 10's and 20's of pages rather than just going down a list..."Hey! That 3836 is a good batch, ::goes to microcenter::" Jmo...
Thought I would add my information on my 3841... from Microcenter Retail location in MI. All information in in the specs below.
Sorry for the newby mistake I did not even know you could turn them off. As you can see this is my 3rd post. I have copied the info from my sig below.
i7-920 (3841A437 Microcenter) Gigabyte EX58-UD5 F5g BIOS
Corsair XMS3 6GB DDR3-1600 (PC-12800) CL9
CoolMaster V8, Antec 1200, Enermax Galaxy 1Kw
BFG GeForce 295 GTX
Current OC: 19x200 3.8ghz, turbo off, HT on, Vcore: BIOS 1.33125, 1.248v load, 1.296v idle
All other volts auto
3600mhz QPI (Auto), 3200mhz Uncore (Auto)
1600mhz memory (Auto) @ 9-9-9-24-1T
LinX 20 Stable with Gigabyte F4 BIOS or F5g BIOS
Real Temp 3.0 max 81C
Vista 64bit Dell 2407 24"
Best LinX 20 Stable OC: 20x191 4.011ghz, turbo on, HT on
Vcore: BIOS 1.375, 1.328v load, 1.344v idle
VTT/QPI 1.335, 3438mhz QPI X36, 17X Uncore
1528mhz memory Using 8X and XMP Profile1 @ 9-9-9-24-2T with 6GB
VDRAM 1.64, QPI PLL 1.4,
Real Temp 3.0 max under load 89C using F5g BIOS
Regarding the batches from Micro Center, since they have one of the lowest list price for the 920s, so it seems like 3841A431 or possibly 3841A383
are to be expected?
That is unless you know someone there who can hand pick the retail box or somehow you luck out.
I am not sure what else they have in stock batch wise as I really did not know anything about the batch numbers when I bought the chip. Actually I knew nothing about overclocking except that the sales person, who was excellent, told me that people were having great success oc'ing this chip. I would run over to the store and check but it is about 40 minutes away. If I go back for any reason I will take a look and report back. Based on what I have read and my own experiences the 3841 seems to be a good bunch. As you said Microcenter has one of the best prices and the day I went to think about building a machine they had a specific sale for people building computers, so I got everything except the MB for a good bit less than retail and at or below what I could find quickly on the web.
I am running a 3841 from microcenter, just picked it up today. WAY better than may 3839. My 39 would not prime 4.2 8 thread at all, no matter the voltage. I am prime blend 4.2 8 thread @ 1.475v on this 41. So far so good, 70C load with HT....not too bad. I will see if I can back off the vcore after a few hours of prime.
my microcenter 3841A437 wont prime for more than 5 seconds on any voltage. i'm starting to think something else is the culprit though. my psu is obviously not powering my system enough because my pc shuts off when i try to game. time for that corsair 620hx i guess..
I have been able to Prime 95, either blend or small FFTs for what ever the stock amount of time is at the voltage above multiple times until I got LinX which seemed to drive the cores harder, definitely drove the temps higher and would crash/BSD much faster. Like you said it sounds like something else is causing your issue besides the i7.
yes, an image of a list... what the hell is the difference, might i ask? its sorted by week and batch, which is the entire point of the thread... And yes, I can revert the spreadsheet to points before the sorting, however that erases all the legit edits after... Anyways, like I said, I will not bother with this anymore, as it takes up alot of time to enter all this stuff manually.
Anyone want to take over? I would but I am pretty new here...
mine is 3839a597
i am using ms eclipse and heres the setting
Base Clock - 190
Turbo Boost - Enable
C State - Disable
Memory Ratio - 4 or 1520 Mhz
CPU Voltage - +0.00v
QPI - +0.160
CPU Pll - Auto
Dram Voltage - 1.65v
IOH Voltage - 1.1v
ICH Voltage - 1.52v
CPUZ and MSI D.O.T says 1.104v vcore ?
http://img.photobucket.com/albums/v6...3/bart4gi7.jpg
http://img.photobucket.com/albums/v6...i7pcmark05.jpg
Maybe we can get a bunch of folks and each take one week of duty, passing the sheet around via email or something? Maybe then we could post the results on gspreadsheet or something, each time copying and pasting into the sheet? I dunno, I hate to see this die.
spread sheet is completely frak'd now
Here we go, highest clock to lowest. If you feel you have been misrepresented let me know. Also if I missed you or anyone let me know, easily updated. If needed we can always start a new thread and have a mod move all posts to it so we can keep the top updated.
EDIT: SEE BELOW.
hey if anybody wants to add my load temps to mine here they are. They dont get any hotter over time, the GTX480 does a great job of keeping temps in check from beginning to end of a stress test.
http://img.techpowerup.org/090208/Capture039.jpg
Ok, updated for you Chicken.
http://i487.photobucket.com/albums/r...chtrackerx.jpg
After dl'ing the data from google a few days ago, I tried playing with it so I could see trends...it was challenging especially since I'm not all that used to excel graphs. I was trying to do a 3-d column chart that would have different voltage settings along the front and then columns with each attained speed on the y so that we could see the 'king' (highest speed at each voltage). But it didn't work. :(
Quote:
MisterMagoo;3637274]Ok, updated for you Chicken.
You sure, I still don't see my temps added :p:
Reference this post to for updated/correct voltage readings and 4GHz oc.
Gotcha, all good.
I will start to update at the end of the days, to keep it simple.
http://i487.photobucket.com/albums/r...trackerx_1.jpg
This 3841 is a keeper....
Edit..lol..I guess there are no thumbs for attachments here...
^ what are you cooling with, thats a great clock!
Aqua computer cuplex di on the cpu, bitspower on the pwm and nb. Feser quad rad.
Mr. Magoo, update my vCore if you please :
3838B079
21x191
1.26250v in Bios
http://www.xtremesystems.org/forums/...&postcount=317
:up:
Two of the corrections were mentioned here:
The same 3837B317 3920MHz on air entry @ 1.35v is actually 1.31v measured. In a post I made here I converted the original spreadsheet to an image and it shows all my corrected values. The 4GHz OC I had switched to water (Swiftech Apogee GTZ).
When I use to make charts I always listed a stability column and placed the highest reported stability in that column i.e. 8-12Hrs prime, OCCT, 32 or 1 MB pi or 3DMark. For me if its not 8 or more hrs prime 95 stable it's just not stable.
Batch Number: 3836B043
CPU Freq.: 3705 MHz
QPI: 3510 MHz
Multi: 19
LOAD vcore: 1.254
CPU VTT: 1.2625
Hyperthreading: ON
LOAD core temps: 86/85/84/81
Cooling: TT SpinQ
http://www.kt-photography.net/desktop.jpg
I'll get that sig updated sooner or later (I'm lazy so probably later).
Nice :D Make sure you post a screen and all that when you get it under water and we will get you on the list.
I am updating shortly just running some tests on my system so I can add myself.
As I am almost finished getting parts for my i7 build my Processor came today from newegg.
I wouldn't post this until I have results but it seems no one has posted this FPO before i7-920 "3841A573" (Ver# E51453-002 Pack Date 1/14/09 Made in Costa rica)
Sorry I won't have results until late next week :(
I have that batch currently. It takes quite a few more volts for 4.2Ghz with HT than the earlier 3841A's to be 50 pass linx all memory stable.
Thanks for the reply, I am sure you are running water?
I will be trying an Scythe MUGEN-2 first and see how far I can go. This will be a pure gaming machine so from what I have read having HT off may be best, is that correct?
Opps you don't have to answer that as this isn't really the appropriate thread :wasntme:
Some numbers on 2 920's I tried today guys, some of the better specimen I have had, all results with HT on:
#1: 3837B282
First I ran 200x19=3,8Ghz on water, 1,23V LinX stable didn't try lower, temps in the low 60's
Then I ran 200x20=4Ghz on phase, not its favourite mult, needed 1,46V to be stable, temp in the low 20's
Unfortunately it hated the 21x mult so I gave up on 200x21, not even 1,55V did it
--> good cool running CPU for air OCs, like most 920's it prefers the 19x mult, useless for chilled water or phase
#2: 3837A707:
First the 3,8Ghz at water test again, also passed with flying colours at 1,23V, again I didn't try lower, temps in the mid to high 60's
Then 4,2Ghz on water, turned radiator fans to max to keep water temp at 25C, passed 3 hours of prime blend at 1,42V temps in the low 70's.
So nice, this CPU likes the 21x mult, on to phase --> 210x21 LinX stable at 1,52V load, horrible mount tho temps went up to +40C, currently crunching WCG at 4,4 Ghz and +30C on all cores :up:
http://www.xtremesystems.org/forums/...1&d=1234401676
Oh yeah, and I had another one this week, another 3837B282:
Only tried undervolting on that one, running 3,4Ghz at 1,08V stable on air :up:
3837A945 - i7 965 from newegg purchased last Friday.
Stock cooler - 4.638ghz
http://valid.canardpc.com/show_oc.php?id=505594
Max screen runs on a stock cooler? Feel like frying your CPU much? :D
Pretty nice mhz for 1,5V.. I just saw that you disabled everything anyway so heat wouldn't be the issue with just 1 core :D
Can you please remove my previous post and use this please?
100MHz less but .150v less too :D (and it's way much more stable)
920 @ 3.9GHz #3836A394
http://valid.canardpc.com/show_oc.php?id=505712
http://img135.imageshack.us/img135/2...x19htofss3.png
3842A334
lp-ut, gskill pk, TRUE push/pull
19x206
DMM measured volts:
VCORE 1.322v
VTT 1.334v
vDIMM 1.600v
vPLL 1.835v
vIOH 1.170v
http://lakesidepc.com/lput39.jpg
3841A371 water cooling.
http://img3.imageshack.us/img3/4853/occt4ax3.th.jpg
Ok I am updating the spreadsheet. May I make a suggestion?
I say we need to have at least one small standard. How about 1 hour of your favorite stability app? OCCT/Prime/linx/IBT whatever floats your boat. That way someone does not see 4.5ghz batch runs out to get it only to find out it only runs 3.8 with HT stable? Just a thought, let me know what you think.
You can also add a column for the number of oc testing hours hours
Yeah a real stability test is really needed otherwise I want this as my entry :D
http://img.techpowerup.org/090211/4911MHz cpu-z.jpg
Updated through this post.
Note: You may have to clear cache for it to refresh.
This is how it goes. If you posted a stable shot IE 1+ hours you went to the top. Duplicate speeds were then sorted lowest voltage to highest voltage. If you have a "?" for hours stable and need it corrected please let me know so I can do so.
alright, this is somewhat frustrating...Ive added my 3836B043 to that spreadsheet on google docs a couple times and its still not listed in the table your making....
Okay I give up. I've mentioned a couple times that my particular dfi board reports all my voltages .05v over actual measured voltage. So the 1.408v in cpu-z is 1.356v measured and the 1.328v for hte 3838a was 1.27v measured. Someone will be unecessarily overvolting there cpu if trying to acheive my clock with similar batch if the go by those misreported voltages. I'm gonna grab an eVGA board so I guess I'll post some results then with more accurate readings.:rolleyes:
Updated through this post.
Note: You may have to clear cache for it to refresh.
http://i487.photobucket.com/albums/r...chtrackerx.jpg
Nice work Magoo :up:
Even though you didn't include any of the CPUs I tested except for the 940... some are here for example. Or do I need to "prove" the numbers every time for you to believe it :D
Anyhow I am keeping the 3837A707 920 for now, backed it down do 4,3Ghz for 24/7 operation.
I got the same board as Nemesis (DFI x58 UT) and get the same voltage overreporting by Smart Guardian and CPU-Z, so I can only assume my true volts are substantually lower. Unfortunately the measure points on the mobo are blocked by my rad, so I can't measure for now.
Bios settings:
205x21, HT: on Vcore: 1,4435V VTT: 1,42V Vdimm: 1,68V IOH: 1,23V
Cooling: Single Stage with extremely crappy mount, evap temp at around -28C :rolleyes:
I have the feeling we get different reports of vcore. I mean it looks some people are reporting voltages when idle while others are reporting when stressed. I think it should be clear for everybody what voltage is need. I would suggest both bios voltage as well as stressed voltage.
Here are my results 24/7, WC
2 folding consoles working :cool:
3838B079 Just like Jvidia ;)
well that may be hard because for me I have 3 different voltages for vcore .. there is BIOS, cpuz idle and then cpuz load.
bios shows like 1.28v cpuz 1.26v and for load 1.23v
So, still bios and cpuz load?
Also, I was thinking would it be important to put QPI/VTT voltage on that spreadsheet? because that is a major overclocking determining factor too in some cases...
It should be clear that the voltage that counts is load Vcore. Just sucks if even that one gets misreported like on the DFI x58's... causes a lot of confusion :(
the one that counts is load vcore? hrm...so, if we just have one vcore listed on the sheet that should be the one displayed? In that case all I have to go off of is what cpuz tells me for load vcore. cuz Ive been quoting idle vcore in all my oc posts =P
This is the MAIN problem. There were never any standards initially set for this thread. So we have "conflicting" information across the board. IMO BIOS voltage and vtt is all that is needed. The purpose of this list is to see what batches overclock well. If we use bios voltage the user who is inquiring about a batch knows what it will take from a bios stand point to get his rig running at those speeds.
Load and idle voltage can vary from different PSU's, CPU-z/eleet/everest versions etc etc.
This is not a benchmark test and we dont need to be at eachothers throats to get a higher spot, if you know what I mean. This is for the greater of the i7 users, not our individual selves.
Exactly. Which is why we shouldn't mislead people with confusing voltages ^^
On the GA-EX58 series you have a vdroop of around 0,03V, plus they usually undervolt. Setting 1,3000V in bios results in 1,248V load on my Extreme.
Now on the DFI (if the CPU-Z reading is even accurate), I get 1,31V loaded at 1,3000V bios setting when Vdroop is disabled. Quite the difference...
For me the list is nice but I like to see as much info in the post as possible. The reason behind this for me is simple. If I contact a seller and he tells me he has 2 batches, for instance XYZA1234 and ZYXA4321. I can log on XS, search the batch number and maybe get an idea of the potential before I buy. Keep the posts coming folks. :up: