Wow, nice chip :DQuote:
Originally Posted by Rob Halford
Anyway you should try it some time, makes the SS really work hard :rofl: :up:
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Wow, nice chip :DQuote:
Originally Posted by Rob Halford
Anyway you should try it some time, makes the SS really work hard :rofl: :up:
maybe HT isn't really needed ?
Right now running TmpgEnc Express 4 and Authoring Works 4 on 15.7GB DVR-MS raw video record file converting it to DVD-video @19x211 = 4009Mhz at 1.328v with no probs. 5hr raw video takes 71mins to convert to dvd-video and 53mins to convert to DIVX with HT enabled and source raw file on 750GB Samsung SATAII hdd. With HT disabled and source file on single 32GB OCZ Core V1 SSD, DIVX conversion took 43mins - nearly 10mins faster :)
Recorded Obama's Inaugaration from my HTPC Vista Media Center.
System specs
- Intel Core i7 920 3836A756
- 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 - 01/06 beta bios
- HD4870x2 stock HSF
- 2x1GB Corsair DDR3-2133C9DF Dominator + 1GB G.Skill PC3-12800HZ (3x Samsung HCF0)
- Ram cooling: 3x 60x25mm Sunon 23.5cfm Maglev fans
- 750GB Samsung SATAII on ICH10R
- 32GB OCZ Core V1 SSD on ICH10R
- Pioneer DVD-RW
- 1KW Corsair HX1000 psu
- Vista Ultimate SP2 Beta 64bit / WinXP Pro SP3 full nLite updated hotfixes dual boot
4009Mhz @19x211Bclk with 8x mem multiplier 3x1GB HCF0 @844Mhz 9-9-9-24
- Record Time = ~5hrs 50mins
- TmpgEnc Authoring Works 4 edited commercials out = ~4hrs 57min DVR-MS file
- TmpgEnc AW4 DVD-Video Conversion with HT/750GB Samsung HDD = ~71min
- TmpgEnc Express4 DIVX Conversion with HT/750GB Samsung HDD @780Kb/S = ~53min
- TmpgEnc Express4 DIVX Conversion without HT/32GB OCZ Core V1 SSD @1000Kb/s = ~43min
without HT/32GB OCZ Core V1 SSD
http://fileshosts.com/intel/DFI/DFI_...onvert6ssd.png
Full screenshots here.
the test isn't a very good comparison, can you run it again , without HT on the 750GB hdd please, then we can get an idea of the gains from the SSD and also the benefit (or lack of) HT
Thanks
Day
I use HT all the time. It speeds up my rendering times immensly. For instance....
My 4.4GHz E8600 rendered a scene I created in 6m 6s.
My 4.0GHz i7 920 renders the same scene in 3m 9s with HT off.
My 4.0GHz i7 920 renders the same scene in 2m 2s with HT on.
Real world proof in VUE 7 - no synthetic benchmark crap. Now just think of what it does when I have 2-3 day render jobs!
THAT is precisely why I bought the i7 vs. a Q9550 or something...
yeah could of been the SSD speeding things up (which is what i got SSD for hehe)
will retest without HT on 750GB SATA as well as with and without HT on single 32GB SSD, 2x32GB SSD raid 0 and 4x32GB SSD raid 0 on Highpoint 3520LF tomorrow!
nice one EvaQuote:
Originally Posted by eva2000
DRAM write recovery timeQuote:
Originally Posted by JWMc
I'm having a lot of success and speed optimisations playing with memory timings....havent found optimal settings but i think the integrated memory controller is key to optimising these I7s. It certainly the limiting factor. Ive been able to reduce voltage too by playing with RAM timings so something is going on between the two pieces of hardware.
Ive got ddr3 1600 running at 7-8-7-20-1T at 839Mhz 19*210 and I think there is room to increase the 210 significantly with optimised speed timings.
Ive got more testing to do before getting back with screenies but Im optimistic right now. CPU volts 1.35 in CPU-Z and QPI 1.35 in BIOS still.
Ram volts as standard 1.66 in BIOS.
Ya, 3x2gb seems to make things much harder for a lot of folks.Quote:
Originally Posted by JWMc
I was worried that 3x1gb would not be enough - that I would be going into virtual memory too much.
As a mater of fact I am sure I am going into vm a lot - I don't even notice it though because I am running raid 0 .1ms SSDs.
anyone done any o/cing on the 3839A batch..just got one of these..
wondering what they are like...in terms of oc capability...
haven't been able to find much online..so i have come here :)
Couldnt you find a good batch first then buy ?
:shrug:
I had my buddy at Microcenter dig through a few boxes to find a particular "B" batch I was looking for:up:Quote:
Originally Posted by aussie-revhead
nah they said they couldn't because it was picked randomly from their supplier :(Quote:
Originally Posted by aussie-revhead
we will see how it goes...got a decent board now...so will give it a crack :)
going to make a custom bracket for my all in one swiftech kit tomorrow :)
should be able to push it a little more with that.
Quote:
Originally Posted by Hooti3
Hooti3, i have one of those! Really don't know if good or not, never took that in consideration ... but i'm doing 3.6Ghz with stock settings only BCLK @ 180 a multi @ 20
Stress
http://img.photobucket.com/albums/v3...m/stress_1.jpg
Idle after the test finished.
http://img.photobucket.com/albums/v3...m/stress_2.jpg
And a run of 3DMark Vantage
http://img.photobucket.com/albums/v3...dum/3dmark.jpg
4ghz ht on 1.4 vcore NaekuhQuote:
Originally Posted by Hooti3
http://www.xtremesystems.org/forums/...d.php?t=213105
Btw, my Batch is #3839A569
Don't know anything if its a good one or bad one, but ok! :) @ 3.6 never had a single problem with it. @ Full it's @ 67ºC so ... its fits for me
Quote:
Originally Posted by day187
Guys i'm doing dvd-video to xvid and divx conversions in tmpgenc xpress 4 latest version supports core i7 but seems the gain is with ssd as source drive as HT and no HT result in about same times - with no HT slightly fasterQuote:
Originally Posted by Brahmzy
so what other encoding/conversion app would you guys suggest that's easy to setup and run ?
not a bad CPU score, about 200 points higher than my vista run, card was clocked lower here so overall score is less, but CPU performed better
http://img.techpowerup.org/090123/Capture007.jpg
Looks good. Whats your batch#?Quote:
Originally Posted by Chicken Patty
Is there anyone who uses a D-tek Fuzion yet on an i7 CPU? I would like to know which nozzle (if any?) to use best with Core i7 and D-Tek Fuzion V1. I guess the quad nozzle isn't of any use anymore with i7 since all cores are intergrated into a single die. Anybody a suggestion?
They're saying don't use any nozzles in the DTek. Since the i7 is not longer two separate cores, and is on a single die you want all that water going right at it. Head over to the Water Cooling forum. There's alot of info on that that's already been posted. If you need help, just ask in there. It's one of the best if not THE best Watercooling forum on the planet.
There are a couple people using those DTek blocks, but they had custom made mounts done up for them. DTek still hasn't got the Pro Mounts done for them yet. One guys is making plates for them though.
Warning: Do not buy or sell in the watercooling section. It's a good way to get gone, and they will never let you in the FS section after that again. That includes PM's too. Do it in the For Sale section. I saw a warning about that in there so just a freindly reminder.
Just built my system and am definitely still tweaking, but it seems like a decent batch. With HT off, 200x20 has been priming for ~3.5 hours at 1.328v with a max temp of 66c (TRUE120). I would enable HT, but my board doesn't seem to like it very much... going to have to play with thatQuote:
Originally Posted by Hooti3
Over 4ghz takes a significant voltage increase, but my temps were still decent. At 200x21 (Bloodrage Turbo always-on feature) and 1.424v vcore I was only at 75c max after 2 hours of prime, but it errored out. At 210x20 it wasn't even stable at 1.46v vcore and 1.4v VTT/QPI. Are such absurd voltage increases over 4ghz normal?
Can you do a comparison with everest?Quote:
Originally Posted by Chicken Patty
In my case W7 is SLOWER than vista.
OK guys total newbie here... can you help me out? Got my first watercooled rig together and this is my first attempt to overclock. Please take alook at my setup and let me know what you think. Any advice much appreciated.
Thanks,
920/P6T 1102 Bios, CPU Batch 3841A403
G.Skill F3-12800CL8T-6GBHK
I lifted these settings from another member that posted them here. So far no hangups...
CPU 1.35V
QPI/DRAM 1.35V
IOH 1.18V
IOH PCIE 1.50V
ICH 1.2 V
ICH PCIE 1.50V
DRAM BUS 1.64V
CPU Differential Amplitude 700mV
CPU Clock Skew Delay 100ps
CPU Spectrum Disabled
IOH Clock Skew Delay 100ps
PCIE Spread Spectrum Disabled
Here's my rig:
http://i190.photobucket.com/albums/z...uter/Done1.jpg
My results: What else do I need to call it good? BTW, regarding temps, pic was taken about 30 seconds after test completed.
http://i190.photobucket.com/albums/z...uter/Test1.jpg
Many thanks. I already asked that question in de WC section but only two members replied. I thought that because there aren't many i7 D-tek users yet that there would be a lack of experience. That's why I asked here as well and was hoping someone who already started OC'ing his i7 with a D-tek could provide an answer. In the WC section they tol be the same thing as you did. I guess I will give it a go then without any nozzle and see how it works out.Quote:
Originally Posted by T_Flight
Bill, Beautiful set up! looks like you are on your way!Quote:
Originally Posted by Bill Reid
I have the same prob with latest ver, 1224. ver 1212 works for me. Over half the time, I get a winsock error message when I reboot, even though ET6 launches. And often ET6 doesn't launch at all from the startup folder even though I can manually launch it once in windows. Not using ET6 isn't an option cause that's the only way to get smart fan (no smart fan in BIOS).Quote:
Originally Posted by GenTarkin
I had Dtek V1 with washer and 5.5 nozzle on my E8600. When I upgraded to i7, no way was I taking my loop down twice and no 1366 bracket available, so made my own bracket and left loop as is. First couple weeks, I used DTEK and nozzle on my i7.Quote:
Originally Posted by Pisklink
The first 1366 that came available was GTZ so I switched to that. With same ambients, I got ~2C better on load at same overclock looking at 4, 4.1 and 4.2 by switching to GTZ with backplate vs DTEK as described above. I had probably 15 runs prime/linpack with DTEK and more than that now with GTZ, any way I look at it short runs or long runs, realtemp usually records about 2C less max temps and looking at avg temps with GTZ.
Though that is not exactly what you are asking, and unfortunately the same laziness that prevented me from taking my loop down more than 1x until 1366 was available, also prevented me from knowing what difference between nozzle on vs off, but given it was 2C from GTZ with it on, my only comment was it was not too bad with 5.5 nozzle on. But cant tell you if would be same or little better with it off, or for that matter a little worse (theory doesnt always predict results). Not to mention I made no effort to control any other variables, though my ambients are usually very controlled.
I cant get the program to open period lol...not just on windows boot and it auto launching...but Trying to open the program manually way AFTER windows is done booting...it just wont open.Quote:
Originally Posted by roller11
thanksQuote:
Originally Posted by TheScavenger
3839A403
sorry, but I dont have Vista installed anymore.Quote:
Originally Posted by RealTelstar
did you do a fresh install of W7?
updated screens: Found a little more performance with memory tweaks.
superpi at 4620 Mhz, 1.488 Vcore
^^^nice clock!!!!! and run :up:
ive pretty much given up on overclocking my rig. i have never in my life owned a setup that was so hard to overclock. I cant get 4ghz stable no matter what i do. I thought i had 3800mhz stable. It was linx, and prime blend stable for 6 hours but after 3 hours of BOINC i got a BSOD. I am running default settings now and think i am about to sale everything.
Can I call dibs? :rofl:Quote:
Originally Posted by liftedcj7on44s
edit: Seriously though, this is something I've known for awhile and is why I don't spend endless hours priming and running linpack. I need my rigs tuned for boinc stability, specifically WCG. After I run a few quick stability tests, (short linx loops, fritz, wprime, hyperpi, some 3d) I set them crunching. Instability will show quickly.
its very aggravating. Too many settings to tinker with. Plus i dont like my motherboard anymore!
I wouldn't like that one either.. sorry to hear you are having issues tho. Maybe start from scratch, with a mobo that actually shows the real voltages you are setting?
im not spending anymore money on this rig besides a few new video cards. I am tired of dumping money into this bottomless pit only to be let down.
LOL! "Besides a few new video cards."
Love it. :D
yea.lol im getting new video cards no matter what. i wouldnt mind actually getting the new evga x58 classified board when its launched actually. It seems to me the E-LEET software is far superior than any other software available. I cant even find a single program that will tell me how much qpi voltage i am running:confused:
Eva,Quote:
Originally Posted by eva2000
480p source (ie. dvd) at best may only give you 50-60% load, resolution is too small to get any accurate data with.
Work with a 720p/1080i (deinterlacing is pretty heavy)/1080p source and encode with x264, you can do small sample encodes from a full length source if you limit the frame window you frame serve via avisynth script.
Any questions feel free to holler my way. Video encoding is one of my raison d'etres :up:
I'd definitely consider switching out the mobo once you've cooled off from the disappointment of your current one. Waiting for the second revision of boards wouldn't be a bad idea at all. I'm thinking the current boards are holding some people's chips back more than anything else. The base clock seems to be the one variable that responds very differently from board to board.Quote:
Originally Posted by liftedcj7on44s
If you decide to switch soon, remember that there is a great Gigabyte thread here. :up:
the giga board was what i was initially going to get. But i ended up finding a good deal on this MSI. It was under LN2 at one time and carried a 965XE to 5.4ghz. But i am not happy with it as far as overclocking goes. It has a great layout, love it for that and its a stable board. Im gonna hold off for the EVGA X58 Classified so i can run tri-sli at full 16x. Next week will be interesting though to see how 3 core 216 260's run on the MSI board being that 1 slot is only 4x.
Quote:
Originally Posted by rge
I never used the nozzle on my dtek v1 and I can tell you... the flow rate is a lot higher on the dtek V1 is a lot higher than the GTZ. my loop design remained the same for the most part. the cyclone is my v1 ek res is pretty weak with the GTZ in the loop by itself compared to the no nozzle V1 dtek with Mcw30 in the loop... any chance I could get you to send me your dtek mounting plate? ;)
I need it...In my favorite game ETQW the cpu usage is 75% with HT off and 35% with it on.Quote:
Originally Posted by eva2000
I don't like Evga's current X58 bioses and one thing I hate about the board is whenever I reboot it has to power down and then power back on. the Ga x58 ud5 doesn't do that. Id hold off on the EVGA X58 Classified they need to get better at bios writing first.Quote:
Originally Posted by liftedcj7on44s
I would have been happy to send what I made, but threw it away, and after seeing it you probably would not want it anyways:p:. My temp "homemade bracket" was a 30 minute cut two pieces of thick aluminum strip and drill a few holes and place over the bracket that came with it....see pic.Quote:
Originally Posted by safan80
http://www.xtremesystems.org/forums/...5&postcount=19
And totally agree the Dtek without nozzle had much higher flow than GTZ. In fact the whole reason I bought washer and nozzle for DTEK was not for better temps, it was to slow the flow rate down. I have silent ddc 3.1 pumps, but without enough restriction they make a cavitation sound at high flow rates which is annoying. It sounds like air, but it is not air. But pinch the line enough and slow flow down, sound goes away. All 3 of my identical pumps do that. The GTZ has enough restriction by itself, so no water cavitation sound.
I have the EVGA x58 board and have had no issue overclocking my chip. I did do a x19 multiplier, but doing 200 was pretty easy. One thing that I read in Anand's review was that the bios reports a higher voltage than what is actually being feed to the various parts, i.e. CPU, for example, if the bios says its 1.45v vcore, it may actually only be 1.35v vcore. I have not had a chance to measure using the voltage pads on the board, but I plan on doing this next week. Anyway, my point is that a lot of people are complaining about high voltage (1.41) to get 4Ghz and higher on this board and in reality it may not really be that much, just something to think about. Shamino is one of the gus that has worked on the bios, so I am pretty sure the bios, especially the latest one, are rock solid. Granted, the Classified will definetely bring some fixes and enhancements to it, I am just saying the current board is pretty sweet. Like I said, 4.2Ghz with HT and Turbo mode on was pretty easy once you understand the relationships between the settings.
Quote:
Originally Posted by rge
I would of used it lol... I got so many fans going I don't hear any of my pumps... in fact they are slient when I don't have my fans running.
Another personal record, 4662 Mhz superpi @ 1.4xx Vcore .
i7 920 batch 3836A977
OCZ 1600 DDR 8-8-8, 6GB
giga UD5
Tuniq Tower 120 hand made hold down
24/7 = 4011Mhz @1.184 Vcore
roller, that is phenomenal. When I get my water cooling setup figured out and installed I want to spend a good amount of time finding out what's stable and benchable with HT off @ very high clock speeds. :)
Quote:
Originally Posted by JWMc
Thanks for the kind words, JWMc. :) We should keep in touch and share info about settings. Just a few days ago I was limited to 4578 Mhz, a few memory/Qtt tweaks with the same Vcore have gotten me where I am now.
For those that live in the DFW area, Microcenter has the 3841A batches in stock for the I920's. These are good overclockers.
Umm... no...Quote:
Originally Posted by Utnorris
Mine is 3841A431 and for 4GHz i need to put a rediculous amount of vcore voltage...
sub8 32m spi windows 7. Ram 8x, 7,7,6,20. uncore 21x. Window open to control temps. Vcore 1.66.
My ram just wont do 10x 2070 at that bclk, so had to settle for tighter timings at 8x.
man that is awesome. I am honestly let down by my i7. not even 1.44 vcore will get 4ghz stable. Im wondering if temps are the issue.
you should be able to get 3.6Ghz or 3.7Ghz.. it beat my qx9650 at 4.4GhzQuote:
Originally Posted by liftedcj7on44s
http://www.xtremesystems.org/forums/...d.php?t=209284
o i can run 4ghz all day long no problems with only 1.36 vcore. but it fails with a BSOD in prime or linx instantly. raising vcore doesnt seem to help any. So i run it at 4ghz daily and have been for the past 2 weeks and have not once had a single crash from it.
Thanks, I saw some of your posts, think you just got a bummer cpu. btw... have you tried with just 3 sticks of ram/3x1gb?Quote:
Originally Posted by liftedcj7on44s
I have 2 sets of 3x1gb. Just for fun I ran at 6x1gb at my prime stable settings...but I have to increase my vtt/qpi from 1.31 to 1.5 and vcore about 8 notches, just to get some stability. But it is two different types, OCZ and corsair dom. I have some 3x2 coming which i dont think will be a problem. But I think supplying all 6 slots makes OCing very difficult, and increases voltage requirements dramatically.
Guys what am I doing wrong?? My first time with a i7 overclock and I can't get linpack stable at all. Using newest occt. Running msi x58 platinum and i7 920 with 3 gigs gskill ddr 3 1333 =. I am only going for 3.8ghz and am running all settings auto with v core @1.32 bluescreen with 2 secs of linpack What am I missing?? Thanks
i have tried just 3 sticks as well. nothing seems to work honestly. I am getting 2 gtx295's so maybe that will make me happy???
O i did get to windows at 4315mhz. using turbo with no HT. it automatically gave a vcore of 1.55 which passed super pi 1m!
Sorry to hear that, I get 4.2Ghz at 1.41v vcore. Also, if you read this Anandtech article, they list it as a good overclocker:Quote:
Originally Posted by kpablo
http://anandtech.com/cpuchipsets/int...spx?i=3502&p=2
"Based on our research to date, lot codes 3835, 3836, and 3841have the best opportunity of receiving a processor that will overclock well while offering both excellent VCore and VTT voltage rates. It is still luck of the draw for the most part, but chances are these lot codes will offer improved clocking rates at lower voltages."
Yup... seems like the last 3 numbers are also very important.Quote:
Originally Posted by Utnorris
Some people complaining about quad-SLI here: http://www.xtremesystems.org/forums/...=213879&page=4Quote:
Originally Posted by liftedcj7on44s
Considering your luck this far, it sounds like you may be adding more fuel to the fire. :p:
Get a new board! :slapass:
So, Im assuming not counting 3836B series then in that 3836? but 3836A you are referring too? because a lot of 3836B's so far arent that great...including mineQuote:
Originally Posted by Utnorris
Well, after some testing ... stable at 3.8Ghz 1.28vcore
http://img.photobucket.com/albums/v3...dot8stable.jpg
and a 4.0Ghz try out ... but the voltage needed was more than i was willing to give :)
http://img.photobucket.com/albums/v3...tmodum/4gz.jpg
Nice Results rge. :up:Quote:
Originally Posted by rge
Your memory sticks do not necessarily hold you down, it is probably Uncore if you haven't bumped Dram voltage a little higher than 1.64.
Why are you running Uncore at x22 ? you can run x20 which gives you more stability.
Try x10 Dram/x20 Uncore.
And as I said, you will probably need to bump the Dram voltage to the 1.80v range in order to keep the ram and Uncore stable.
Just ordered a kit for cooling my i7.
this one: http://www.pccasegear.com/index.php?...oducts_id=8508
Using 1/2 inch barbs and 90cfm fans on it.
You guys think that will be enough for a 4.0Ghz 24/7 Clock?
The radiator seems to out perform the Black Ice GTX 240 Rev 2.0 by about 3-4 degrees from a couple of reviews i have seen. Haven't seen how it compares to The PA120.2, but i assume it's behind it.
Thoughts?
does the vtt voltage that should be in 0.5 range of dram voltage is same as qpi voltage?
Thanks for your extensive explenation. :p: :) It's really appreciated. I also was thinking of getting the GTZ block since D-Tek (still) haven't released their modified bracket yet. *How long can it take to make a new bracket out of steel. It's not particularly rocket science, now is it?!?.*Quote:
Originally Posted by rge
However, in the liquid cooling section I found someone who modified the GTZ bracket with his dremel to make it fit on the D-Tek V1. I'm only not really satisfied with the backplate of GTZ and therefore I also ordered the EK backplate. To me it seems that the EK backplate will dissipate mounting pressure a lot better. If this works it will save me some money on a new CPU block. If it doesn't I'm screwed and still have to buy a new one. :D
I also used the 5,5mm nozzle on my E8600 and worked flawlessly. But I think I will try the Fuzion V1 without a nozzle than on the i7. I hope it will give good results and I don't have to dismantle the loop a second time. In case flow will be to high I can still lower the pump speed of my D5. Ofcourse I will post temps. by the time my system is up and running.
Thanks, I appreciate the suggestion.Quote:
Originally Posted by The-Fox
I have had my DRAM as high as 2v, and qpt/vtt at 1.68v trying 10/20, but no luck. My ram will do 2000 at 8,8,8, 21 with 1.96 dram v 1.62qpi/vtt running arena chess at 22x uncore, but spi 32m on that setting or 10x/20x makes rounding errors or bsod. I dont want to run higher v than that on 6 minute stress test. And for whatever reason my ram does not like 9,9,9, timings, does same at those, except worse times.
Once I have dram v up to 1.96 or so and qpi 1.62v, 22x (4530mhz) uncore is pretty stable. And uncore makes a huge impact on spi times. At 20x uncore, I would never make sub8, even with ram at 2000, judging by first few passes it does make it through at 10/20.
On Anandtech I read something about two voltage that may not differ more than 0,5v from each other. Can somebody pls explain which voltage settings these are on a Asus P6T Deluxe?
I think they're called "QPI/DRAM Core Voltage" and "DRAM Bus Voltage" on the P6T Dlx.Quote:
Originally Posted by Pisklink
Yes, it has to do with the physics and what these new CPU's and the Mem Bus and COntroller can withstand. It's a differential voltage problem. If you start getting away from a .5v diff between the QPI/DRAM (Vtt) and the DRAM voltage it could cause damage. This was Explained by Dr. WHo ina post on here early on right around release time. He also said that like all OC'ing to do so at your own risk.Quote:
Originally Posted by Pisklink
In this case, I'd say the less diff the better. Since we usually deal with around 1.65v on the DRAM, we need to keep around 1.3-1.4v on the QPI/DRAM. 1.35v on the QPI/DRAM is the Intel max spec if I'm remebering right. I have 1.3v set in mine right now and it's fine on the rig in my sig. Be careful with Vtt though, becasue there is a limit, and if you go too high damage to the IMC can result. I don't think we know where that line is yet, but some have been running slightly over spec voltages with succsess although it doesn;t mean they'll be able to do that for long periods of time. It's all about the risk you are willing to take.
I'm on the more conservative side, and I'm very careful what I say about voltage because voltage can cure some problems, but it also kills these parts if one goes to high. AFter a bunch of reading, I've developed a feel for it, but I'm very careful what I do.
I have good news and bad news. The good news is that I got my new i7-940 in on Friday. The bad news is since I'm WCed, I didn't want to tilt my PC over to install it and when I tried, I bent a some of the pins on the CPU slot :( SOOO I had to buy a new MB. I had the Gigabyte X58 extreme(which I liked), locally I was only able to find an Asus P6T Deluxe. I'm still trying to get used to it. I can't find where you turn turbo on.
Well, this chip does 215+bclk with only 1.35 qpi/vtt. My old 920 needed 1.79+ for 210 bclk.
Right now, I'm running 4GHz(211 x 19) HT on with about 1.31 V(does that sound good, or it is a bit high?) - I'm still tweaking it a bit.
I'll try to get some pics when I have a chance.
to Lukee
Batch?
what do you guys think?
is it worth it to sell my 3836A690 for like $200? And then pick up a new one from Microcenter at $230 hoping for a better OC?
Right now, im stable at 3.6/3.78 w/ turbo on 1.21vCore, but I need like 1.4vCore for 205+ BCLK.
The 940 is 3838B125Quote:
Originally Posted by Factotum
Look like this is the most common case... the need of 1.4v to get stable at 4GHz...Quote:
Originally Posted by ap4lifetn
That is what I need for 4ghz stable if talking cpuz volts, 1.31vcore cpuz, then 1.344 cpuz for 4.1, 1.376 cpuz for 4.2....mine has been a decent Ocer.Quote:
Originally Posted by Lukee
Regarding socket pins, I tilt my computer at ~45 angle (using small sturdy box, lay top against it), to prevent air from getting in via t-line but still makes it easy to change cpu. I bent socket pins on my P35 DQ6 doing same as you, trying change cpu out in upright position...but was able to bend them back with microscope and microforceps.
I've bent pins before as well and a mechanical pencil works perfect. :)
That sounds like a good chip, the chances you are going to get something better are low.Quote:
Originally Posted by ap4lifetn
35/36/41 weeks are the good ones, so it seems.
Your i940 sounds promising, pump it up :up:
nice CPU, Lucker =))Quote:
Originally Posted by Lukee
Is there a problem with running more voltage on Vtt than Vcore? I'm asking because I'm running only 1.184 volts Vcore cause that's all I need to achieve 4011Mhz CPU clock. I have Vtt set to 1.215 which is getting close to the .5 differential WRT my 1.66V setting on my Vram.Quote:
Originally Posted by T_Flight
From the i7 review by Rajinder Gill on anand - http://www.anandtech.com/cpuchipsets...oc.aspx?i=3502
- he said that 166 would be the sweet spot for 965 because of the ability to also get good oc on the memory.
So I started working on the 27 multi with the idea that I could pick up some DDR3 2000.
So I have been able to get 27x159 prime stable with HT on - pretty happy about that actually (see below).
So if I pick up some new 3x1GB DDR 2000, I should be able to run it at 159x12=1908?
someone double check me but I think the .5v delta is between qpi v and ram v, correct?Quote:
Originally Posted by roller11
That is correct.Quote:
Originally Posted by SteveRo
I'm going to pick up a new set of DDR3 1600-2000 3x1gb in a couple weeks - who makes the best set at this point?
rge - how are you liking F5e? Did it get you anything over F4j or m?Quote:
Originally Posted by rge
I have not had a single reboot or other problem on F5e. So I like it and am using it. However, stability wise or benching, F4m, F4j, and F5e all the same on mine, requires same settings for same OC, and spi etc, no difference, max OC 4.922 same, and max bclk 217 same.Quote:
Originally Posted by SteveRo
what are you running your memory at now - speed and cas?Quote:
Originally Posted by rge
I am thinking of a memory upgrade :)
Quote:
Originally Posted by Lukee
I understand that the .5 diff is between Vtt and RAM voltage. My concern is whether or not Vtt should be equal to or less than Vcore. If so, then Vcore would be indirectly affected by the .5 diff.
I have never heard that vcore needs to be set to anything vs qpi - intel max v that I know of -Quote:
Originally Posted by roller11
I was on XP sp3 with corsair dominators 3x1 gb at 1600 stock 8,8,8,24 (8x200bclk). Now that I can use 6gb (changed to windows 7 64 bit permanently) I ordered 3x2gb OCZ platinum 1600 7,7,7 21 from newegg, due here on wednesday. Will be interesting to see how much more qpi/vtt I need for 6gb vs 3 of ram, currently only 1.31v for 21x200.Quote:
Originally Posted by SteveRo
how high qpi and mem v are you prepared to go?Quote:
Originally Posted by rge
do you think you really needed 6gb?
if at 3gb - when you go into vm - which should not be that often - you have .1ms SSD - I doubt you would ever know the difference.
yeah, dont know that I will notice the difference, but I am one of those that has to try everything:p: I am assuming I wont have to go all that high, but that is one of the things I want to know, and best way to do that is try both. But I will run at 4.1 minumum regardless, preferable 4.2Quote:
Originally Posted by SteveRo
This is the lowest my 940 can do on 211 x 19.
4ghz @ UNDER 1.3v load with HT on in LinX @ 210 bclk? Something is fishy!Quote:
Originally Posted by Lukee
His BIOS voltage is probably around 1.35V. Also, base clocks seem to have a wide variation of ability board-to-board.Quote:
Originally Posted by JWMc
Or chip to chip? :(Quote:
Originally Posted by YukonTrooper
Hmm, you know what.. maybe I just screwed up and didn't test low enough voltages @ 4ghz. I just checked and I hit 4.2ghz @ 1.408v load so I may be able to get a pretty nice vCore @ 4.0..
Quote:
Originally Posted by Bobbylite
Hello I'm just wondering if could copy your profile, really a newbie when it comes to overclocking thanks... :)
No, actually my chip does the exact same thing. I just did a 20 pass run maybe 2h ago. Same clock, same voltage. I used memory at 1691, 7-8-7-20-1T timings, uncore at around 3800MHz give or take a few MHz.Quote:
Originally Posted by JWMc
LLC was on auto in my run. CPUZ reported voltage showed 1.288V (not completly correct, but then again, only a DMM is really correct).
If however I set 20x200MHz, I have to use roughly 1.3V.
It's funny that OC with higher BCLK actually works better than higher multipler. Completly opposite of what we should be seeing.
No wonder all the chips basically clock the same across the versions (920, 940, and 965 XE).
concur - all chips about the same (I have the 965).Quote:
Originally Posted by dejanh
Also - lower multi with higher bclock also gives lower temps.