The beep was (I put one ram in red slot), but now it shows 7F?
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The beep was (I put one ram in red slot), but now it shows 7F?
I have my cpu on 4.0Ghz but it shows 0mhz in bios. Why is before turbo mode function X. Why cant i enable turbo mode function?
http://www.shrani.si/t/1o/Ma/3qPg43gV/problem-2.jpg http://www.shrani.si/t/1Q/CH/GJJG5Gg/problem-3.jpg http://www.shrani.si/t/2X/ox/1QGSM6xk/problem-4.jpg
Hi,
I have not been active for a long time no so please tell me the best bios to put in for a i7 980x?
..and are this board still one of the best?
Latest version (56), I'd assume. It contains the critical hotfix microcode.
Hi
980X@4.5 Prime 1R OK
You should be using LinX to test stability. Prime95 just doesn't cut it anymore.Quote:
Originally Posted by kazukun
Can anyone confirm if I will need to mod my E760 to get an E5620 to work? I thought I read somewhere that this is needed for the 6 core Xeon's but no idea about the 4 core 32nm Xeons.
Isn't the mod only required for Dual QPI Xeons?Quote:
Originally Posted by lowfat
It is a dual QPI Xeon. Well that is what I was afraid of.Quote:
Originally Posted by ReverendMaynard
yeah man, it sucks. I have two X5555's here waiting for an SR-2 and I can't do shizzle with them.Quote:
Originally Posted by lowfat
the mod is fairly easy if you have the hands of a two year old lol.
Ya it doesn't seem that difficult. Only pictures I can find are hereQuote:
Originally Posted by ReverendMaynard
http://kingpincooling.com/forum/showthread.php?t=599
But they aren't actual pictures of the board.
LinX 1.445VQuote:
Originally Posted by lowfat
http://blue.ap.teacup.com/kazukun/img/1271546636.jpg
OCCT Linpack 1.399V
http://blue.ap.teacup.com/kazukun/img/1271545964.jpg
I am a Japanese PC creator
http://blue.ap.teacup.com/kazukun/71.html
There we go:
http://i162.photobucket.com/albums/t...t/LynxDone.png
Classy 759 BIOS 51
Hi
LinX
@4563.9MHz 1.435V(BIOS1.375V) 6C/12T Ok
Nice kazukun what kind of cooling? Can't wait till I get my 980x on Friday.
water-cooledQuote:
Originally Posted by =[PULSAR]=
CPU： EK-Supreme - Acetal
VRM.IOH.ICH： EK-FB EVGA X58 CLASSIFIED
MagiCool XTREME NOVA 1080 ( 9 X 120mm) Radiator (Fan 12cm500rpm*9)
KOOLANCE PMP-450
http://blue.ap.teacup.com/kazukun/74.html
Prime95 doesn't cut it anymore?? 50 passes of Linx stable, but not 8 hour prime stable... seems to happen all the time.
Mind if I join this thread XD
Anyone has i7 980 in EVGA Classified 4 way SLI (E762)?
Mine didn't scale so well in terms of vcore/frequency beyond 4.2Ghz...
I can get my 980x 16 copies of 32M PI Stable with 1.24375v @ 200x20, uncore was running 4000Mhz while dram was running 1600Mhz CAS 7 (EVGA didn't allow me to adjust uncore ratio below x2 of dram frequency...)
and 4.2Ghz was proven stable as well with 1.275v BIOS. However any frequency above that will require a huge pump of vCore voltage to keep stable but I didn't see such issues in other X58 motherboards
I was suspecting if this is the motherboard BIOS issue or what..can anyone help to test?
My i7 980x batch is 3003B466.
http://i317.photobucket.com/albums/m...E762/4G125.png
need more V core
I have same batch, 1.39 to get 4.5Ghz, and it seems to be better than most VTT seems to be very needy to.. it will run 2200Mhz RAM, stable, but way to high VTT, just for 2000Mhz I need 1.4V VTT
That's an issue of 980 and LinX, a lot of people are reporting the same in the Gulfy thread.Quote:
Originally Posted by justin.kerr
I have had it happen to a lot of CPU's not just the 980x's
Hi, I have a pretty specific question regarding this board regarding an SLI system and a Corsair HX1000W. Do you guys with similar set-ups run the second 12V ATX connector and if you do how do you guys set up the rails for the modular connections?
Any results with 980x on air?
Guys is 1.30v IOH too high or too low for a gtx 295 quad sli setup?
I just measure my voltage with a mutlimeter and that is actual volts eleet is reading the same
Please advice
Why not take the letter Y
http://www.shrani.si/t/2q/Ch/dbT0Hav/1/bioss.jpg
I just picked up my E760 from a fellow member here in the "classifieds"... (brand new return from RMA) just this week and I'm also new to the 1366 platform coming from socket 1156. I've got a nice batch 920 (3938B010) and will most likely run my rig with a low voltage overclock ~4.0GHz for a "crunching" 24/7 setup. I've done some testing at 21x200 and 19x~210 but I seem to be having some bclk issues at around 209. I most likely need more voltages. Can any one give me some VTT and IOH voltage ranges to work with for bclk in the 210 to 220/225 range. I'd like to bench the chip at 215x19 and then 215x21 and providing that I'm successful... perhaps even push on from there.
Note: I'm running with vdroop enabled on air with a Noctua and two medium speed fans in push/pull. These are just short stability runs I'm just starting to test the chip.
Low voltage O.C. load:
http://i695.photobucket.com/albums/v...40LinXload.png
Low voltage O.C. idle:
http://i695.photobucket.com/albums/v...40LinXidle.png
200x21 load:
http://i695.photobucket.com/albums/v...i792042GHz.png
200x21 idle:
http://i695.photobucket.com/albums/v...042GHzidle.png
We write the process of how to Flashing the bios with USB. I have tried all but I can not Flashing. Please help!!
Seems you're not using MS DOS? (I don't know if that will matter...)Quote:
Originally Posted by M_T_M
Anyway, you don't need to press ENTER after you press Y on that screen...
A Heads up: BIOS 59 Released
For details please check this thread out.
http://www.evga.com/forums/tm.aspx?h...mpage=1#323945
Ok, now I flshing bios to the latest version (59). but the problem remains the same. The problem is because I do not say which version I am Flashing. There where it says Date, it is meant when the bios was issued or when I am Flashing. Given the CPU and the turbo is therefore possible that the cpu fault
http://www.shrani.si/t/1b/Wr/2KEBiGnv/1/bios.jpg http://www.shrani.si/t/1s/Ca/2ZZrVysm/1/bios-2.jpg
BIOS Version: IX58S659Quote:
Originally Posted by M_T_M
yup you're there
What would it be wrong motherboard or cpu?
Wonder if 59 bios is any better in clocking ram than S61B..Any one have findings on this?Quote:
Originally Posted by SAE
59 Updates:
Updates CPU Microcode
Corrects issue with boot screen hang on some RAID 0 SSD setups
Extreme cooling mode improvements when using a 6-core CPU
Supports reduction to 4-core or 5-core for 6-core CPUs
About the double CPU power socket on the Classified, do I lose out anything if I just have only 1 of them connected?
I cannot comment on the differences in oc-ability as I did not test it myself. But 99% of the changes refer to the new Gulftown cpus now IMHO... IF you are on GT, then go for it. But for Bloomfields there are definitely better bioses, I think.Quote:
Originally Posted by blizz
It does no harm at all. ;)Quote:
Originally Posted by blizz
If you were going for 5 or more GHz with several highly clocked gfx cards, then you could improve things a bit with two connectors connected.
So anything below 5ghz will have no effect. Good to know.Quote:
Originally Posted by SAE
I'm trying for 4.6 ghz HT off. Just making sure before I start cracking my head for the wrong reasons. Thanks man.
Depends on your psu as well... ;)
But if it's a good 0.85-1.2kW one, it should suffice.
Quote:
Originally Posted by PolRoger
Can anybody help my friend here ^^ :shrug:
1366 is not my forte.
I'm using a Seasonic S12D 850wQuote:
Originally Posted by SAE
Here's the product.
http://www.pcstats.com/articleview.cfm?articleID=2447
is it good enough? Sorry I really don't know much about PSUs..
Most likely needs more VTT, since your RAM should be able to do those speeds with ease.Quote:
Originally Posted by PolRoger
I can bench all the way up to 220Blck without raising PCI-E, 1 or 2 more mhz than that and it hard locks. So when you get to speeds around the 215ish range, you might need to up the PCIE to 105 or so.
Only changes I have to make to bench on water is VTT\Vcore\VDimm. QPI PLL\CPU PLL\IOH\ICH I all keep at stock levels.
What QPI multi do you use to bench up to ~220 bclk? If I leave mine set to enabled/auto I can get up to ~209 with the x18 qpi but it seems to "fail boot" ~210 and up. If i set QPI function to disable it drops QPI multi down to x12(?) and I've been able to boot 215+.Quote:
Originally Posted by Rudster816
19x208 BIOS:
http://i695.photobucket.com/albums/v...19x200BIOS.png
I leave it on Auto. Ive never had to lower it to get any OC stable.
Try raising the QPI PLL to 1.25v
I'm getting an E760 soon with a 930, is the general consensus to use the S61J BIOS for this chip over the new 59 BIOS?
It's a great psu and should suffice for sure. :up:Quote:
Originally Posted by blizz
I would say so, but some users seem to be successful with the 59 as well. You have to try. Keep an eye on performance as well comparing both bioses. Some say video performance is gonna suffer with 4x-5x...Quote:
Originally Posted by Enigma422
Have anyone some info about CB and CBB con Classi 760? any solution or something like a mod or hardmod :(.
I'm think there may be something slightly "borked" with this particular motherboard sample.Quote:
Originally Posted by Rudster816
Even with ample voltages as soon as I go to 210+ bclk with x18 qpi I get no (failed) post. If I disable qpi control the board drops to x12 qpi and I can boot. I've also tried swapping out my Muskin for GSkill and the same story. If I drop back to 209 then I can boot with x18 qpi...
The only other thing I can think of off hand is is to try flashing to the latest BIOS?
EDIT: Flashed to the latest 59 BIOS... and still no affect on the problem.
19x216:
http://i695.photobucket.com/albums/v...19x216BIOS.png
my uncompleted rig ...
http://i44.tinypic.com/t80v3s.jpg
The board bugs out? Usually it's the cpu!Quote:
Originally Posted by TOOL_CHILE
XCool Jumper works as well as the bios options for me.
Yep, is the mobo, why?, because same CPU, memory, PSU on DFI UT LP X58 doesn't have that problem.Quote:
Originally Posted by SAE
F*cki*g mobo :down:
Then you should contact EVGA support IMHO.
where's your UD7 abangcupi, i thought you still use it :DQuote:
Originally Posted by abangcupi
Im gonna pick up a Classified E760 tomorrow, and i know its have bios to support 32nm cpu. I think it is the first bios with support for it, can i boot up with 980X retail?
Thanks for all help:)
change my E760 by E759
The XCool bios options work for you at zub zero? That's a first lol.Quote:
Originally Posted by SAE
Yep. With my 759 it works, either xcool or bios options. (-50°C)
Anyone have any experience with an i7 930 using bios 59? curious to see if its worth updating
What BIOS would you recommend for Bloomfield?Quote:
Originally Posted by SAE
S61J for 760, S22D for 759. :)
Concured. S61J in a 760 has served me well for both 920s & 960s.Quote:
Originally Posted by SAE
any improvement of uncore clocking with that bios? I can run 5.1 all day but the 16x action is killing some benches for sure. 17x is no go, 18x would be a miracle. Probably the cpu's fault but I've driven this 920 to its limits every bench and just need that little bit more :)
For me it depends on used ram and ram multiplier. With the Corsair GT and 8x higher Uncore showed as problematic. With my backup ram ocz 12800 gold it works fine with 8x and 17-21x uncore (did not test further). Same cpu was used. But it was using an older bios (before 227, E759) iirc. Things may have improved.
I'm still on the factory bios lol, after so many stable runs at 5.1-5.2 made it hard to change ;)Quote:
Originally Posted by SAE
I've tried a few sets of ram, same results. 8x ram and 16x uncore seems to be it's limits. I'll give the bios you suggested a shot and see if it opens anything up.
Cheers,
Rev
18x is no problem for me. I can not speak to improvement. I started with 61J & have been reluctant to move off of it.Quote:
Originally Posted by ReverendMaynard
lolQuote:
Originally Posted by ReverendMaynard
I am anxious to see if it works out for ya. :up:
VTT is a closely related issue to Uncore Freq. I bench with VTT [+325]. I do not recommend this for 24/7.Quote:
Originally Posted by ReverendMaynard
My Uncore freq tops out at approx 4500Mhz. However, I am usually benching in the 4000-4100 range. My system will give me a bit more core freq if I back off Uncore a little. It is a balancing act...
He might know this already.^^ ;)
But I know what you mean.
I bench between +325 and +350, uncore doesn't scale at all with it for me..... and definitely not 24/7 lol. Just during some DICE sessions.Quote:
Originally Posted by Raptor-X
My chip scaled Inversely after +325. System stability went down the tubes with any more. Yes, I am also using DICE for benching. Looking forward to trying LN2.Quote:
Originally Posted by ReverendMaynard
Slightly OT. I have had better stability running my memory @ 1762Mhz (6-7-6-19) rather than pressing for more frequency with looser timings. How do you configure your CAS6 sticks?
Edit:NM tired eyes found your ram config in your sig...
2:6 just doesn't boot so I'm stuck with either loosening these, or running my PI Black 2000's at either CAS 8 or 9 as well. Also tried lower VTT, but it just seems like the window of bench stability is super narrow with either the board or the cpu.Quote:
Originally Posted by Raptor-X
Bummer.... What BIOS Rev are you on? What Mem Strap?Quote:
Originally Posted by ReverendMaynard
IX58S61G, boxed bios. Using 1600 mem strap.Quote:
Originally Posted by Raptor-X
Same here, on both counts.Quote:
Originally Posted by ReverendMaynard
Sorry to report that you may have the "short end of the stick".:)
I have limited "hands-on" experience with i7s (920C0, 920D0, 920D0 #2, 960D0). I have noted a relatively wide range of performance variance within this group. Your chip appears to be near the bottom of the uncore ranges that I have first hand experience with... Wish I could offer more help.
Best Regards,
Raptor
short end of the stick is a bit harsh lol ;)
OK. "Short end of the Uncore Stick". Trading Uncore for Core has always been a good transaction in my experience. :):)
Attachment 103607
It is always a balancing act.
Attachment 103608
depends on the bench. Gotta love those 960's though, take allot of the work out hitting high bclks.
I am running +225 Vtt for 24/24, doesnt seem to get stable under that due to high memory clock (143 qpi, 1:14 multi), and especially above 4GHz. So far no problem, it's crunching on BOINC. Dunno what's the limit on these chips for 24/24 operation...Quote:
Originally Posted by ReverendMaynard
24/7 I run 4.1ghz HT off, 1.245v real vcore, 1.125v VTT real, at 1.5v vdimm.Quote:
Originally Posted by gmat
I always run with HT on. My 975 wont run under 1.275V for 4Ghz and from there Vcore requirements raise fast.
My concern is with VTT, my corsair kit (CMG6GX3M3A2000C8) wont run at spec speed with any less than +225.. I can drop to +200 if i drop the CPU speed to stock, but once at 4GHz it requires +225 to get stable again.
Can i run this 24/24 really ?
Wow, i'm running +150 for 24/7 @4.6 ghz. could it be due to my low bclk setting?Quote:
Originally Posted by gmat
Whats it take to run 230-235bclk on a daily basis? Been playing with my westmere today and had 230 booted into windows for a few minutes before a blue screen ruined the fun. Stuck at 215 right now and want more. Any idea's what to increase? Temps are a non issue
http://i234.photobucket.com/albums/e...ckTTC6/215.jpg
If you have low bclk, and reasonable memory timings, yeah. I run low blck (142) but 1:14 ram multi = 2000MHz ram frequency. If i leave everything to auto, and put the XMP profile (to run my ram at its rated frequency), it will give me a VTT of +350 ! Madness !Quote:
Originally Posted by hlonipha
I would say, altering all voltages but IOH makes absolutely NO sense for me. IOH is important for high bclks as well (as well as for multicard usage and full dimm population).Quote:
Originally Posted by Hey Zeus
PCIe clocks, cpu impedance and qpi signal compensation would be some other points to consider. We cannot see what they're set at.
correct bro
also for a few procs i tested
for high dram clocks
u need to change ure skew depending on the pwm frequency to cpu frequency
hint to others
there's a relation between ure pll to ioh/qpi 1.1 voltage.
But change by how much and what kind of skew ?Quote:
Originally Posted by cstkl1
which relation ?Quote:
Originally Posted by cstkl1
normally i would divulge everything
but with a few ppl attitude that .."anybody can do it with a good dram and proc"
all i can say test it bro.
took me a month to get my 2110 c7 complete stable at 7-8-7-20 1N exactly like SAE.. the hit it took from 209 to 211.. eh not acceptable bro because of that write to write/read to read at 6
now reverting back to getting 7-7-7-20 1n write to write/read to read (same rank )=4 stable.
I'm also running blck of 141 with a multi of 33 and the memory at 1:14. Are you running at +350 ? or did you manually set it to lower ? are you stable at a lower volt setting?Quote:
Originally Posted by gmat
I completely concur. :)Quote:
Originally Posted by cstkl1
I wonder why you'd need this much vtt at such a low blck and uncore. I only need a set +150mV at 4-4.05GHz Uncore with both W3520 (3844A704) and i7-950... And the Xeon was at 200+ bclk.Quote:
Originally Posted by hlonipha
I often had to conclude, completely sledgehammer settings with voltages taken from some oc-how-tos were being used without switching on the thing between the ears (used to have the purpose of thinking).
You can collect ideas and experiences of others, but you should always begin from the beginning for yourselves. Learning by doing/testing. Most of the time newbies (for that special platform) come and ask, why this setting and that setting should be like that. They hardly get why as they did not dive deep enough to understand.
I am sure not everybody has the time or is willing to spent this much time in tweaking, but at least you should not use factory/auto setting like xmp not exactly knowing what they do. With vtt you should be very careful and not to exuberant. For many CPUs with D0 stepping 1.35-1.4V should suffice for 4GHz Uncore. And with air/watercooling I'd avoid to go higher than that for 24/7.
Hi,
I have just start playing with my new beast. Any advice here regarding temps and voltage? VTT max?? 980x run very cold..
GT's max Vtt is 1.4V referring to its datasheet.
+350 was the full auto setting, with XMP profile for the Corsair GT's.Quote:
Originally Posted by hlonipha
I manually set it to lower, managed to lower to +225 @ 4.14GHz, or +200 @ 4.00, anything lower would mean 0x07F random BSOD's under full load. I had to boost the QPI PLL a bit too... Running blck of 142 with 1:14 ram ratio.
Well i have a very rotten luck, all the CPU's i've got were lemons. So i got that EX in order to forego the blck limitations (and i did well, it peaks at like 175) and still run fast ram and fast qpi. I'm glad for you that your CPU's were golden but i had no such luck...Quote:
Originally Posted by SAE
Actually i went from zero, and progressively increased clocks and tweaking settings to maintain stability.Quote:
Originally Posted by SAE
That VTT i got from underclocking CPU, then setting XMP profile on RAM to run it at its rated 2GHz, and reducing VTT down to the point i was getting BSOD's on LinX and such. Wont get stable under +200... Unless you have another solution for me in which case i'm interested.
XMP is recommended by Corsair in order to run their ram at rated speeds.. any other profile will result in no post or quick crashes. I know VTT can be dangerous that's why i was asking here, maybe someone else with the same ram could tell what their settings end up to be with those Corsair modules.Quote:
Originally Posted by SAE
I tried lowering it but even +200 will lead to crashes eventually.
I had 4 D0 CPUs on EVGA boards (X58 SLI and Classified E759) and none needed more than +200 for 4GHz Uncore. You seem to know how to do your testing, but many DO NOT. ;)
BTW, Corsair is being conservative with their XMP profile to be sure those GT can be run at almost any system. I also own Corsair GT ram (2000 CL7) and it's the best ram i ever had! I could run 1.6Vdimm and 1.324Vtt @7-7-7-20 1T RTL 53-55-57 fully stable with my Xeon on water. It's a great cpu as is my 950, but I really cannot understand why most of the XE cpus need more voltage to run same speeds as good 920/W3520 cpus. :shrug:
That's the interesting point. My Vcore is not excessive, but i really have to get so much VTT (mine is the 2000 CL8 variant as per my sig), that's the weird part.Quote:
Originally Posted by SAE
Everything but ram is watercooled... I'm getting rather nice temps, although they peak fast around 4.3-4.4GHz where i have to run over 1.4V Vcore. Still glad about that 975, i reached my goal to get over 4GHz stable daily (with HT on and all bells and whistles), and to run 2GHz ram.
One interesting thing with the 975XE is the very different OCing, additional RAM multis, and the faster QPI (it has higher multis). I'm running the max multi on QPI, that may have some influence too, but with 142 blck it's not ending up at extreme speeds anyway... I'll post my complete settings this weekend to have some feedback (from other XE owners if possible) as this 975 seems to be a very different beast from the regular i7 breed...
(edit) oh RTL 53-55-57 is the correct setting for 2000MHz right ? i'll double check that
Nope, the RTLs are set automatically every bootup. They can even differ from boot to boot if you do not fix them. Iirc mine where at 55-57-59 or 55-58-60 or even at 56-58-60 when at 2000 7-7-7-20-1N. I manually set them to the lowest possible value for the first channel. You then got to set up the 2nd and 3rd channel either like: +2 +2 or like: +3 +2.
Hope it helps.
BTW, I think it's intended that XE clock differently from the lower "crap" ;)
But voltage-wise it's a miracle. Wonder how they pick them.
It helps yes ^^
I'll have to take a look at other detailed settings, getting over 4.3 (HT on still) is not that easy. I also run 2x GTX 285's in SLI in the same loop (with 2x140 and 3x120 rads) , and the motherboard of course, so it's getting hot fast above 1.4V...
SAE: read above this post I only use +150 for my 4.6 ghz. I was asking him if he is running at +350 or if he manually set it to lower and with that if he is stable. been clocking for awhile and do use that thing between the ears.Quote:
Originally Posted by SAE
I know how fast it can get to 85°C, then showing first effects of thermal throttling. A good combination of voltages can help you to keep temps lower. You might have hit a thermal limit for your chip/cooling though.Quote:
Originally Posted by gmat
Hehe. Don't mind, it was not directed to anyone, but to the general public. ;)Quote:
Originally Posted by hlonipha
Yeah the thermal limit for me seems to be around 4.4GHz.. I wouldnt mind running 4.4GHz 24/24 but i would need to find the sweet spot for voltages in order to prevent throttling. The challenge is, dual 285's also add a lot of heat when pushed, so i have to keep a good security margin on CPU temps. It's the first CPU i've ever had that reaches a thermal limit, for the 10 years i've been watercooling them !Quote:
Originally Posted by SAE
:D
You sometimes can decrease vcore finding the right vtt-vdimm balance. Then it might help upping the pwm frequencies to a value that works best, as vrms dump some heat into the loop as well. Set the PLL voltages (IOH and CPU) to 1.35V-1.5V. IOH voltage also has to be upped some for SLI and high (base)clocks. 1.2V is a good starting point, but do not increase it, when you don't need it. Minimizing voltages ain't an easy task, but it may pay off in the long run.
So far i've left the default 1.65V Vdimm.. it runs stable at current step (4.14) so it's fully ready for the WCG marathon week that begins tonight :D (Go xtremesystems !) I dont want to risk any unstability before it's over.
Any clue why the default CPU and IOH PLL are at 1.8V ? I'm still feeling uncomfortable decreasing them so much... Even 1.5V is a huge decrease from 1.8V...
I have IOH at 1.2V and ICH at 1.1V (as recommended for USB issues), i dont feel the need to touch them as even at full blast on graphics (furmark, crysis) it's completely stable. Only other voltage i pumped was QPI PLL it helped go over the 4GHz barrier.
Yeah, I also thought like that about decreasing them this much. But it just works great. I was priming full throttle for several hours with cpu pll @1.5V. IOH pll has also positiv or no negative effects on stability in my eyes.
http://www.abload.de/img/xeon4315-4110-10277-7-4jdx.jpg
24h prime x64 w/5.5GB RAM usage, QPI PLL didn't have to be increased for that.
http://www.abload.de/img/xeon4420-4210-1052_7-8a9bd.jpg
26h prime x64 w/5.6GB RAM usage, QPI PLL in synch with IOH
//edit.
another one with max primestable ram clocks cl7:
http://www.abload.de/img/xeon4441-4229-1057_7-8hlxd.jpg
Very interesting.
Is it a rule for getting full stability ? Is it based on empiric evidence (various overclockers finding out it works best that way) or more technical reasons ?Quote:
QPI PLL in synch with IOH
I think my QPI PLL is at 1.3V now (if i remember) but my IOH is 1.2V, would have to raise IOH to 1.3V then ?
It works best, just a rule of thumb and a consensus between ocers, I would say. It may work the other way as well, but for full stability in 2d and 3d I had to set equal values for both. The first screen settings worked well for prime an linx, but 3d seemed a bit unstable. I then noticed I had not increased qpi pll and catched up on setting it to IOH level. Worked! :D
/edit. What do you need 1.3V QPI PLL for?? I needed 1.3 - 1.35 for 235MHz bclk.
The 975 has a higher QPI than regular i7's (6.4GT/s vs 4.8GT/s) and i'm still running it at full multi with my slightly higher than stock bclk. And also running 1:14 ram multi (and XMP profile) seems to put a lot of stress on the ram controller. I had some weird memory corruption crashes when running it lower than that - i'll try to lower it again eventually as i added some Vcore too after a 0x0101 BSOD.Quote:
Originally Posted by SAE
Again it's a problem kinda specific to 975 XE, which makes it interesting in its own way :D