Quote:
Originally Posted by michaelrw
i dont have it on Z77 . Z87 will have it for sure :up:
Quote:
Originally Posted by michaelrw
i dont have it on Z77 . Z87 will have it for sure :up:
Thanks for the help and the advice. Appears the problem was not with the 1.6 UEFI, but it is totally my fault. I got the same problem with 1.42L, but I managed to isolate it. Appears my CPU is not tolerating high VTT, PCH and PCH DMI voltages. If I push them around 1.3V I get the booting problems. I was trying to raise them to stabilize the CPU 4.7@1.395 but appears the CPU simply needed more voltage for this frequency. It can not go lower than 4.7@1.41 for Prime95 stability.Quote:
Originally Posted by nickshih
But lesson learned, now its time to fry the GPU :shocked:
hey nick,how is the imc on hasswel?What memory is best for it,samsung or hynix :D?
Quote:
Originally Posted by Dumo
verry nice Dumo! can you try and post also the voltages you use when taking this kind of screens? it would be helpfull for others too :up:
testing another 2133 8-9-8 kit 1.88v
http://i.imgur.com/ayaay.png
First off, loving this board for the most part. It was solid on subzero and efficiency looks good, but I have one issue.
Is there anything I'm missing for getting PSC to boot at 2600, with bclk or with the 26x multi? Either just gives me 55 postcode error. Tested back on my MVF and everything is fine, same standard PSC profile timings, 2600 and boot @ 1.82v. No IMC voltage changes. But it's just not working on the formula.
I can boot in on the 2400 multi and bclk up to 2600 once in windows and it will pass 8m no problems (didn't bother running 32m) so it should be able to post with those settings I would have thought. 1.60 bios. Any help appreciated, really need PSC working on the 2600 multi for some 32m runs I have planned.
Thanks.
P.S: Samsung works just fine on Z77-OC, 2666+ no problems.
have you tried setting timings and booting at 2400 divider, then restarting back into bios and just bumping mem divider up to 2600?Quote:
Originally Posted by jjjc_93
Thanks for the suggestion Splave, just tried that now and got the same 55 post code after bumping up to 2600.Quote:
Originally Posted by Splave
TRY higher vtt & vcssa!
Quote:
Originally Posted by AMD LOving man
Good to hear no more issues God bless ur GPU ..
Quote:
Originally Posted by Alex-Ro
Hey buddy, i have NDA about anything on Haswell . But on OC formula , everything will be fine . I think it is clear :rofl:
Quote:
Originally Posted by jjjc_93
Can u try higher Vtt2 ? what sub timing u used ?
Bcz different mobo the bios is not the same
I set psc tight settings, mem perf 2 @ 2600-1.925V/ccsa 1.247/vtt ddr 0.834 in bios then change tertiaries in windows.Quote:
Originally Posted by jjjc_93
Hope it helps.
http://img837.imageshack.us/img837/9858/aa5x.png
Hmm, no issues with 2600 divider here, nor getting to 2600 with bclk, but as Splave posted go ahead and try booting with 2400 divider then reboot and try the 2600 that should work with no issues.Quote:
Originally Posted by jjjc_93
I actually tested a few kits of the same Crucial Ballistix PSC kit you have and they could all boot at 2608 8-12-8-28 but not always pass 32M with super tight secondary and tertiary timings even with 1.86v, but then again this was on air.
2800 c11 XMP is not working for me, however probably just :banana::banana::banana::banana: IMC.
Thanks for the help guys, same story though. Tried different vccio and vtt voltages, booting with the 2400 multi then trying to go to 2600 straight after, manually setting loose tertiaries, leaving tertiaries on auto, using the PSC profiles. Nothing seems to work, the board doesn't even seem to be trying to boot, just instant 55 error code. I'll try flashing the bios again and seeing if that helps, but I'm not too hopeful at this point. Tried multiple PSC kits that are all able to do 2600 on my MVF.
long shot but can you try loosening the motherboard PWM cooler a couple turns, also try reseating CPU
Just got it working now, looks like it was a bios issue. Flashed back to 1.42g and 2600 was as easy as it is on my MVF. 1.82v, 9-12-9, 2600 divider and it boots no problems. No IMC voltage adjustments or anything.
http://i.imgur.com/BTKtg.jpg
Thanks again to everybody who posted and helped. :D
Yep...that's what I found out!
1.42G is the better BIOS!
In what aspect?Quote:
Originally Posted by emertX
1.6 seems ok but I will retest 1.42G tomorrow and see if anything changes
http://i.imgur.com/77Zn9.png
Yep! Do that!
I pretty sure, that it's the better bios for ram and cpu voltage!
1.42g and 1.42k are with different training rules
Let me know which bios u guys prefer .. P1.6 same as 1.42k
1.42K works awesome with cross section of ram chips
I prefer 1.42g!
But right now, I didn't test it under ln2!
Nickshih , i sent you the reply in a PM bro thank you.
Kind Regards: Angelo.
http://i458.photobucket.com/albums/q...k/DSC_0092.jpg
CPU: Intel Core i7 3770K @ 5.0GHz
MB: ASRock OC Formula, BIOS P1.60
DRAM: Team Xtreem 2600 10-12-12-25-1T 2 X 4GB
GPU: Gigabyte HD7970, MSI's special BIOS, Driver Catalyst 12.11 beta, CAP 12.10
Storage: 2x Crucial M4 128GB, FW 000F
ODD: LiteON DVD-RW
PSU: Corsair AX1200
Cooling: Custom watercooling - EK Supreme HF plate #6 CPU waterblock, 2x XSPC RX360 radiator, Swiftech MCP655 pump, EK FC7970 GPU waterblock, EK Multioption X2 Advanced reservoir, XSPC 1/2" ID 3/4" OD white tubing, 12x Scythe GT AP-15 1850rpm 120mm fan + Aerocool Shark 120mm fan, Coolaboratory Liquid Pro thermalpaste etc.
Casing: Dismatech Easy Dual V2 Bench Table
OS: Windows 7 Ultimate 64-bit SP1
5.0GHz @ 1.416v | LinX 0.64 (11.0.1.005) w/ AVX:
http://i458.photobucket.com/albums/q...LinX141v-1.jpg
3DMark11:
http://i458.photobucket.com/albums/q...330tessOFF.jpg
3DMark Vantage:
http://i458.photobucket.com/albums/q.../vantage-1.jpg
3DMark06:
http://i458.photobucket.com/albums/q...ock/3d06-1.jpg
3DMark03:
http://i458.photobucket.com/albums/q...ock/3d03-1.jpg
wPrime:
http://i458.photobucket.com/albums/q...k/wprime-1.jpg
Super Pi 1M:
http://i458.photobucket.com/albums/q...srock/1m-1.jpg
Super Pi 32M:
http://i458.photobucket.com/albums/q...rock/32m-1.jpg
Hyper Pi 32M:
http://i458.photobucket.com/albums/q...k/hyper2-1.jpg
Cinebench 11.5:
http://i458.photobucket.com/albums/q...benh141v-1.jpg
Unigine Heaven XS:
http://i458.photobucket.com/albums/q.../unigine-1.jpg
Super Pi 32M Benchmark with Samsung IC RAM:
Team Xtreem 2600C10 @ 2666 9-12-12-25-1T
http://i458.photobucket.com/albums/q...6669-12-12.jpg
Team Xtreem 2600C10 @ 2709 10-12-12-25-1T
http://i458.photobucket.com/albums/q...0-12-12-25.jpg
Team Xtreem 2600C10 @ 2766 10-12-12-25-1T
http://i458.photobucket.com/albums/q...0-12-12-25.jpg
Team Xtreem 2600C10 @ 2800 10-12-12-25-1T
http://i458.photobucket.com/albums/q...12-12-25-2.jpg
Super Pi 32M Benchmark with HyniX IC RAM:
G.Skill TridentX 2800C11 @ 2800 11-13-13-25-1T
http://i458.photobucket.com/albums/q...1-13-13-25.jpg
G.Skill TridentX 2800C11 @ 2870 11-13-13-25-1T
http://i458.photobucket.com/albums/q...1-13-13-25.jpg
Super Pi 32M Benchmark with PSC IC RAM:
G.Skill Pi 2200C7 @ 2500 7-11-7-28-1T
http://i458.photobucket.com/albums/q...07-11-7-28.jpg
G.Skill Pi 2200C7 @ 2600 8-12-8-27-1T
http://i458.photobucket.com/albums/q...08-12-8-27.jpg
Super Pi 32M Benchmark with Elpida BBSE IC RAM:
G.SKill RipjawsX 2133C8 @ 2500 9-12-9-28-1T
http://i458.photobucket.com/albums/q...25009-12-9.jpg
Board works well with MVP feature:
http://i458.photobucket.com/albums/q...ssOFFMVPon.jpg
Priming stable for 12 hours...
5.0GHz @ 1.44v
http://i458.photobucket.com/albums/q...k/prime12H.jpg
Hi Nick,
can one put with the OC Formula Transmitter and Receiver Slew, how with the Asus Board?
i7 3770K Batch L206B376
5GHz @ 1,328V 4/8
http://www.kingpic.net/th/5ghz___1_335v.jpg
Greeting nfszocker
Anyone have any problems getting Vista installed with Z77 ? I'm struggling with BSOD's after getting drivers installed.
Retail/TechNet OS image if it matters. :(
Quote:
Originally Posted by Gunslinger
I will give it a go tonight however I remember having issues with this setup as well when trying x64 Ultimate but I will try x86 Vista as well and see if there are any issues.
Getting my OC tomorrow..sold my G1Sniper 3 for this mobo as for me it much nicer and seems it runs great.
Excellent scores some of you are getting
Quote:
Originally Posted by Swanie
You are going to be one happy camper:yepp:
I also can't install Vista!!!
It has to be possible, if you look at all the top scores for multi GPU, they are all done in Vista.
2x Vista
http://hwbot.org/submission/2326131_...70_68040_marks
http://hwbot.org/submission/2326236_...70_67265_marks
http://hwbot.org/submission/2310880_...80_65811_marks
4x Vista
http://hwbot.org/submission/2328572_...70_69427_marks
http://hwbot.org/submission/2325751_...70_67842_marks
http://hwbot.org/submission/2316993_...x2_66510_marks
I got it to work this morning, I had been using a TechNet OS image that included SP1, I tried the original MS retail disk this morning and it worked
Both Z77 OC Formula and Asus MVE
All mb settings set to "optimised defaults"
OK!
Thanks therefore!
My Vista image works over here as well, no SP1
Thanks. Got my mobo last night and got it up and running. Have to get new memory as these AxeRam not playing nicely (DDR 2000 MHz). Also have to update BIOS as mine came with P1.40Quote:
Originally Posted by l0ud_sil3nc3
I've got it working but it scores 10,000 points lower than XP and I have no idea why or how to fix it.Quote:
Originally Posted by l0ud_sil3nc3
about updating bios with instant flash from bios, there is option to change configuration before flash, do I need to change specific configuration or just use the default settings?
nvm
Is the new intel orom raid included in one of the bioses?
OK!
Thanks therefore!Problem solved!
:D
Samsung 840PRO Raid0 :D:D:D
Here nothing is wrong?
Where does Nick remain?
nick is in USA for a couple days, will be back soon
Okay, I did not know.
hey dumo,help me again pls...Bought a new oc formula but can't boot at all at 2800 cas 9 with same sticks that can do that easily on maximus gene...I saw you managed that,anything special regarding timings ,voltages?or what is the secret?....:confused:
bios 1.15G,1.42G or 1.42K,same,55 error code.same sticks same imc do that easy on maximus V gene with 1.90V
@Alex..Did you try 1.92V~1.95V?
Yes sir...no luck....BOards need slew transmitter and receiver adjunsting in order to be really goood
I'm having problem with 4 sticks 4GB G-Skill Ripjaws 1600MHz 9-9-9 1.5v http://www.newegg.com/Product/Produc...82E16820231313
The prime 95 custom test 1344k with 90% ram usage, will fail instantly once I start the test, tried to play with all the voltage but it still fails instantly this specific test with 0.5 Round Error. Tried with XMP and manually.
If I try 1333MHz the test runs fine without errors. The same ram configuration were running perfectly on ASUS P8Z77-V at 1600MHz.
I'm currently on Bios 1.60, I guess you guys optimized the board for high performance memory and I can't get my low end modules to run at 1600MHz or maybe there is hidden timings on the Formula this modules don't like :(
All tests failed to get stable 4GBx4 @ 1600MHz 9-9-9-24
I did some tests to examine the board ram slot and ram modules:
Testing 2 sticks at slot 1 and 3 @ 1600 9-9-9 = no errors
Testing other 2 sticks at slot 2 and 4 @ 1600 9-9-9 = no errors
So no problem with the ram itself nor the ram slots.
Put again the 4 sticks @ 1600MHz and instant fail 1344k test!
Change the ram speed to 1400MHz and no errors!
Should I try bios 1.42G?
new BIOS P1.80
1. Support UEFI PXE boot
2. Improve monitor compatibility.
any ram improvement in this bios?
Doubt it,ram is very poor on asrock oc formula,hate to say this but rog boards are far better.Cpu side si another story,here oc formula is very good ;)
Did you try P1.80? it is just added today, so no much info yet.
http://www.asrock.com/MB/overview.as...20OC%20Formula
I already sent the board back,did not bother to test it further when i tried for 10 hours booting to 2800 cas9 and nothing even with 2v,but with gene 2860 cas 9 32M doable with 1.90v...Thanks but no thanks.
I can't boot/post RAM at 2933 with this board like i did on Maximus V Extreme.
what bios do you use?Quote:
Originally Posted by nfszocker
even on 1.42 bios?Quote:
Originally Posted by Alex-Ro
Yes,tried 1.42G 1.42K and 1.60.Nothing,even 2750 not good.Same imc that did 2860 cas 9 and booted to 2900 CAS 9 on air and crashd loop 3 in 32M.This board is good at cpu but sucks bad at memory,well compared to maximus series at least,pretty good compared to other boards like gigabyte or msi :D
did you test any psc hynix or bbse or just samsung?
Samsung only,works ok with cas 10,boot 2933 no problem,but cas 9 no way.Tried every setting in bios,i think board needs slew settings implemented ...
is there info about the beta bios 1.42L, is it based on 1.42K or 1.42G? what fixes it has?
I see in this thread only 1.42K and 1.42G are mentioned but nothing for 1.42L and it is on the asrock beta section
I see, I read it first that you tried 2933 cas9 but then read it again haha. I usually use psc on this board so I am no help sorry mate :)Quote:
Originally Posted by Alex-Ro
p1.60Quote:
Originally Posted by boldenc
When I use NickShih profile, there is a red led on the post status checker stays on. Is that normal or there is something wrong?
hi i come back !!! anything i can help ? :up:
Hi Nick,
can one put with the OC Formula Transmitter and Receiver Slew, how with the Asus Board?
there is random red led which appears after a restart, at the post checker behind the ATX 24
When I enter the bios, then exit, there is no red led, later restart windows and the red led is back. may I know what does this read led mean? nothing in the guide.
Unfortunately, you realize nothing about.Quote:
Originally Posted by nickshih
Would be nice if you could reply.
I don't know why no questions is being answered :)
Anyone have USB issues with bios P1.80? sometimes my keyboard will lose connection, or the num lock led on the keyboard will keep flashing.... removing the USB keyboard cable and pluging it again fix it, just wonder if it is bios issue?
it is random so I can't duplicate it.
Really depends on the IC and your sample, in fact none of my Asus boards can run my BBSE as tight/fast as the Asrock;)Quote:
Originally Posted by Alex-Ro
I would have to agree, my board seems more clock friendly then any I have had in the past and I have had pretty much every board out there.
anyone tried the bios select jumper method to reflash bios?
when I move the bios jumper from 12 to 23, it boots and instantly it shows the instant flash screen asking to plug a fat32 device. Do I need to move the bios jumper back to 12 while the system boots and showing the instant flash screen?
That is the bios selection jumper which allows you to move from the primary bios to the secondary backup or default which came with the board originally, moving to 23 will allow boot in the backup bios then just shut down and move the jumper back to 12 and boot again at which it will ask to flash the primary bios to whatever you want by instant flash or internet flash or other source such as a thumb drive. Reboot again and your good to go with the new bios, backup bios can not be changed yet i believe like on Gig boards but that might change.
You sure about the shutdown and move the jumper back to 12?Quote:
Originally Posted by flesheatinvirus
What I did
- move the jumper to backup bios 23
- boot the system
- asrock logo showup then it redirects to a screen asking for the bios file
- if I shoutdown and move back the jumper to 12, it doesn't ask me to flash and it boots with the old bios
I took that from the book though I never did that for changing my primary bios. I just loaded defaults then rebooted and used instant flash to jump to 1.60, have not tried the newer bios yet.
Hi, i've a problem with rapid oc. I can encrease the ratio but i can't encrease the BCLK.
I've install the INF file after rapid oc instal can be this the reason? or need some particular driver?
Quote:
Originally Posted by nfszocker
Asus made up the name of that option . They have their own way to tweak dram overclocking . It is not common solution inside the bios.
I have improved the memory overclocking ability in my BIOS already .
Base on different way of tweaking . The same memory module is possible to have different overclocking ability on different mobo .
Quote:
Originally Posted by boldenc
It shows the booting sequence of ur mobo .
If it stops at CPU led , it means cpu initial failed
If it stops at memory LED , means memory training failed
Quote:
Originally Posted by boldenc
Quote:
Originally Posted by flesheatinvirus
Move the jumer from 12 to 23 , It is backup rom to support instant flash function .
It will flash ur main bios rom . Please follow the instruction on the screen .
Put the bios rom file into ur USB ,then choose the file from ur USB device.
After flashing the bios , follow the instruction on the screen . It will ask you to move jumper from 23 to 12 .
After that .... reboot . Everything is done .
U need to install Intel MEI driverQuote:
Originally Posted by THERULE
http://www.asrock.com/MB/overview.as...20OC%20Formula
Intel Management Engine driver ver:8.0.10.1464
Quote:
Originally Posted by Alex-Ro
Seems that u got a defective mobo .
I found that someone has the same situation as yours .
After he changed another mobo , then everything is fine .
How to set the OC Formula IO L (CHA) and IO-L (CHB), if I, for example:Quote:
Originally Posted by nickshih
IO-L (CHA) 4
IO-L (CHB) 3
have?
I can set a maximum of IO-L (CHB) +1Clock, but then I have. 4/4, I can not at IO L (CHA) -1 Clock so I have 3/3,
that's not so Can this be said, the IO-L (CHA) & (CHB) tREFI dependent?
Quote:
Originally Posted by nfszocker
RTL will reference IO-L . If u modify the value of IO-L. RTL will change also .
So TREFI is more important . U can leave IO-L as auto .
Just write out a BIOS, what is working and if possible without memory profiles, which are good for nothing anyway.
Obviously you must have a bad board as this is easily one of the best memory clocking boards imho. I can clock my dimms fine with or without memory profiles, but I prefer to use them as it saves a little time over manually setting every secondary and tertiary.Quote:
Originally Posted by nfszocker
My first one had a small issue with vdimm, and after a swift RMA the new board has been painless for me with PSC and BBSE:up:
And keep in mind I have tested every top tier Z77 board minus the M Power from MSI.
I agree my OC clocks ram very well and takes chips to the absolute limits with ease and I too have tested a :banana::banana::banana::banana: load of boards, money is not an issue so my torture rack always has the very best. I currently have four liquid systems active in this room and this board build is the best one by far, in the last month nine different 3770K chips have passed through this board plus Gskill, Corsair, Teamgroup and Avexir ram all of which ran faster then there rated speeds rather easy on this board.
I did not say that the Maibord is bad and I had already some other motherboards including Asus and this is much better in terms of memory, all the same whether Hypers, BBSE, PSC.Quote:
Originally Posted by l0ud_sil3nc3
On the OC formula, I have to max now 2 Kit BBSE 1225MHz CL9 ran 4 kit PSC 1225 CL8/1300 CL9, 2 Kit Hypers 1200CL8, 3 Hynix 1275 CL9 kit, 2 Kit Samsung.
Does not matter whether PSC BBSE or Hypers, the mainboard constantly spits 55 and I have experienced so far with no Z77 board. Except OC Formula and that has to do with BIOS.
Actually, for me, 55 on POST display on ANY 1155 BOARD is a timing or voltage issue, not anything else. Get 23, and you might as well forget it, but 55 can be dealt with.Quote:
Originally Posted by nfszocker
I run 2750 Mhz with all DIMMs populated with 0.925 V VCCSA/IMC, and 1.05 VTT, no matter what board. Only one Z77 board has issues wit hthat, and that is the Gigabyte Z77X-UP7, where you need to use specific BIOS for whatever IC you use, at least, to get that memory scaling without increasing VTT or IMC/VCCSA.
I've been clocking ram on these boards the past two months(with about 5 more missing there):
http://img.techpowerup.org/130104/DSCF7333.jpg
http://img.techpowerup.org/130104/002.jpg
I had the same thing with the MVE and vaseline after replacing the board all my issues were gone, do you have another sample to at least test with before you blame the bios?Quote:
Originally Posted by nfszocker
I have been using P.160 with no issues at all and I have good samples of every ic (BBSE, PSC, Hynix, Samsung) and they all work flawlessly on the OC Formula, but PSC and BBSE really do fly on this one.
Test a new board before you blame the bios:up:
Probly more Vdimm will help for 1300+ on rams regardless of board used.Quote:
Originally Posted by nfszocker
Most of my "good" bbse/psc need 1.87~1.95Vdimm on air to finish 32m and less for other benches.
Nice collection cadaveca, looks like this room.
Thanks!Quote:
Originally Posted by flesheatinvirus
Z77 has added so much to memory OC, I like it a lot. The OC-focused products from each brand are doing pretty good, but this ASRock is the one I had the least number of issues with, and I got mine rather early, too. Worst thing I could find about this board is that the yellow isn't the same colour on all the yellow bits and bobs. The BIOS wasn't as mature as it is now when I reviewed the board, but it has come a long long way.
I don't have many chips, and seemingly ones that do not like 2800 MHz or more, unfortunately, and no board has helped with that at all.
I'm done with Z77 now though. Didn't even keep me interested for a year. :shakes:
You're all absolutely painless, from 1.87 to 1.95 V VDimm?Quote:
Originally Posted by Dumo
Then I will prefer not to 1300MHz, here are a couple results:
1200MHz CL9 1.78 V VDimm BBSE
http://www.kingpic.net/th/5ghz_1200m...2srfbvus3l.jpg
1200MHz CL8 PSC 1,74V
http://www.kingpic.net/th/5ghz_1200m...scub46lkb5.jpg
1250MHz CL9 PSC 1,755V
http://www.kingpic.net/th/5ghz_1250m...scu3b8g2e7.jpg
1300MHz CL9 PSC 1,795V
http://www.kingpic.net/th/5ghz_1300m...sckeb57kc9.jpg
Of course you can treat Post Code 55, the problem is that you have to flash with this mainboard, new BIOS.
It does not need a new bios,it needs a different memory vrm.It';s implementation it's :banana::banana::banana::banana:,other bbse or psc chips complete the 32M on other boards with 0.05 V less than this board,alsi the real voltage is 0.02 higher than what you see(a good friend tested extensively this board).It's a good board for CPU(Even if it's limited to 1.92V on ln2) but for memory it sucks badly.I am not going to start any fanboy war here,my sticks of samsung which performed flawless on maximus V gene,V formula and V extreme sucked so bad on this board.It's possible my board was broken,but it was then you better send me a new one for free cause i am not goind to start binning motherboards now,already tired of binning cpu's,ram,now mobo....?
I absolutely loved this board for it's CPU vrm,but memory is a crucial part too and this one it's unacceptable.
I'll be honest. I was able to boot at 2933 with the Gene even though it wasn't stable, it did enter Windows. With the same ram in the Asrock it would not post at 2933. Apart from that this Asrock board was stable as a rock and i really liked it even though it took me some time to get used to the spacey UEFI, especially with the sound effects turned on.
Also at 3D marks this board really shines.
The board is not bad, I'm not the person to issue the same and get all the chips on the board up and running, is a fact that the board is not the high-flyer is the way it is made is,
as for memory performance, self cheapest Asus can more as this board and under 1.80 V.
Furthermore, I have now shot up even with no board windows, with this here already twice.:down:
Quote:
Originally Posted by cadaveca
It looks like a museum , awesome ..:up:
Quote:
Originally Posted by cadaveca
Quote:
Originally Posted by Alex-Ro
Quote:
Originally Posted by nfszocker
Seems that , u guys has some problem with memory OC .
I believe that it is pcb quality issue of production from Factory . Nothing related to the BIOS and Mobo design
I think you can just send the mobo back for RMA and replace a new one .It is the fastest way to solve this problem.
I know u guys want to compare with ASUS mobo . In fact , lots people also clock bad on M5g ,M5e etc.
Thanks for u guys's advice . I will try to improve the quality of production on Z87 OC formula . For better consistence of overclocking ability. :yepp:
About the 2933 booting . I tighten the threshold of memory training for better memory verification .