Too small a sample to make this sort of conclusion, imho ;)
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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