H2O & open window :D:D
http://www.shrani.si/f/z/Ce/47tIkLhT/8422.jpg
Printable View
H2O & open window :D:D
http://www.shrani.si/f/z/Ce/47tIkLhT/8422.jpg
Take Shamino's word: A54 is still the best.Quote:
Originally Posted by loybond
I've had my machine for more than 2 months and I've never run across this problem yet, but I wonder if having 8GB of RAM makes a difference. I run vtt@1.2 and 21X191Mhz (4Ghz). I reguarly run a few apps, Virtual PC, and a game at the same time without a whisper of trouble, but never looked at the memory usage. Just for the fun of it, I loaded a few things up and played COD WAW for a couple of hours with no issues.Quote:
Originally Posted by SunTzu69
Thinking I have a good chip, 4ghz @ 1.292v idle, 1.248v Load.
My question is, my board won't post at 1600ram, I have XMS3 1600, i don't really want to run 1200mhz on the ram, timings are 9-9-9-22-64, 1.65v doesn't even help, any ideas?
It seems this is the best I can do with my cpu at 4Ghz:
Freq: 200x20 @ 4Ghz
Mem: 1.5v Gskill, DDR3-1600
Vcore: 1.4v (bios)
Vtt: 1.33v
PCH: 1.12v
Anything less on the vcore or vtt and she crashes inside of 10-12 minutes. At these settings I seem to be good for hundreds of Linx passes.
A special thanks to Miahallen, Gautam and Brutal-Force for their feedback. I am pretty happy with this setup for 24/7, it is fast and responsive.
EVGA P55 SLI (E655) + i5 750 same batch as in my previous post.
http://img211.imageshack.us/img211/650/213dy.th.jpg
Also some benching on cold air. :D
No prime for me yet...only started today.
Not bard for a £71 board + £17.99 cooler lol....Don't think it comes any cheaper.:D
http://img710.imageshack.us/img710/5426/91689815.jpg
Not gone over 1.35v in bios
http://img705.imageshack.us/img705/6060/besti.jpg
I run a combo of G.Skill and XMS3 1600Mhz chips in my setup. I run them at 1528Mhz (8x191Mhz) on 1.6v. Ram settings are at 8-8-8-21-66. For me, I actually found this combination to work well even though I'm underclocking a bit from 1600Mhz (my system was a little faster than using a higher Mhz setting and more stable to boot).Quote:
Originally Posted by AcEmAsTr
What are your settings for 4Ghz (20x200Mhz or 21x191Mhz)? Also, what is your RAM multiplier?
LDN
200x20 is what i'm currently at, with a ram multiplier of 6x giving 1200mhz.
The motherboard will reset the bios everytime i try to boot at 1600mhz, indicating that it's not stable.
I'm not sure if the motherboard can handle 1600mhz ram?
How much vtt for 200x20? You should try higher. What's the rated freq for your memory?
Ram is rated at 1600mhz, using 1.3vtt, purely because that's what people have stated it'll need to be at to achieve 200
I have a different Gigabyte P55 MB, but I would suspect the bios on each are close to being the same. Are you on the latest bios?Quote:
Originally Posted by AcEmAsTr
Also, I would start with these settings in your bios:
Perf Enhance: Std
Ext Mem Profile: Disable
C1E: Disable
You might want to also hard set your base RAM timings in bios (9-9-9-24)....if you're not already doing that.
Just to try and check your RAM, go back to default on the CPU 20x133 with a 10x multiplier on your RAM (that will set the RAM at 1333Mhz). If it works, than bump up your CPU multiplier by 10.....and than again (if it works). You'll quickly see if your RAM can run in the 1500Mhz-1600Mhz range.
LDN
Jor3lBR-Quote:
Originally Posted by Jor3lBR
Is the A54 a beta bios? I was just looking around at EVGA and I didn't see it. Link?
Hey Roger. Yes but now shamino just released a new revision of that same bios quoted as the best. Here you go:Quote:
Originally Posted by PolRoger
E659:
http://www.filefactory.com/file/a20d...shtool_A58.rar
E658:
http://www.filefactory.com/file/a20d...shtool_A58.rar
E657:
http://www.filefactory.com/file/a20d...shtool_A58.rar
^
Jor3lBR-
Thanks... I also was just searching some more and found the links for both a54 and a58 over at kingpin cooling... got them both and I'm testing a58 now.:up:
Well I just got around to overclocking my i5 750 after searching all over online and did not find another L935XXX batch to see what kind of results most guys were getting out of these. I do realize however, the i5 750 batches are not as reliant on certain batch #'s for a good O/C as the i7 920 is. Needless to say Im happy with this chip:up:
L935B381
3.8Ghz @ 1.168V....4Ghz @ 1.224V SuperPi 1MB stable, did not test Orthos or P95 yet...
http://img64.imageshack.us/img64/1927/4ghz.jpg
That's some nice results, although Pi 1M is useless. At least try Pi 32M or better yet try Hyper Pi, it uses all 4 cores.Quote:
Originally Posted by Hi_Clocks
I'm itching to get clocking mine, an L939XXX, but I'm still on the damn stock cooler until funds aren't so tight.
Anyone seen results from an L939 batch yet? I can't find any info anywhere.
just a quick run
http://i243.photobucket.com/albums/f...ogy/i5/3rd.jpg
This was just a quick play My L939 never went above 1.35v... looking good so far...as waiting on a new board...not recognising 4gb only 2gbQuote:
Originally Posted by Dee
http://img710.imageshack.us/img710/5426/91689815.jpg
Good stuff. Thanks man.Quote:
Originally Posted by vocch
i5-750 L943B683 @ 3.2GHz
4*2GB DDR3-1600 8-8-8-24-1T
undervolt + overclock :)
http://www.abload.de/img/3.2ghz-linxy1e7.png
Your load temps are about the same as my idle temps:up:Quote:
Originally Posted by Chri$ch
hmmm i find the way to pass 223 benchable
224 - 226 may boot but not stable
i see my friend do 232 easy with gigabyte p55 series
http://img33.imageshack.us/img33/3432/pi32mx4c8.png
Max Bclk 223 Benchable
http://img638.imageshack.us/img638/8...me951hrr30.png
Prime stable room temp 30C
Was thinking of getting the EVGA P55 FTW too ( esp to save getting a new water block! ) might have to think agianQuote:
Originally Posted by PatRaceTin
Not bad for a $60 motherboard eh.. Could go higher if I could figure out how to lock the 21 multiplier. I turn on the 21 multiplier in bios and at idle it is 21 but under 100% load it drops to 20.
http://img535.imageshack.us/img535/9360/overclocka.jpg
Is this thread for i5-750 only, or are the new 32nm i5's welcome also?
I would say all i5's brother lets see what you gotQuote:
Originally Posted by OC Nub
got a 750 from newegg this week
L945B539
seems to be fairly decent so far, 6 hours p95 blend, i did 10 loops linX max mem earlier, gonna do at least a 20 loop later. this is for my gamer so it needs to be stable. cooling is a original TRUE 120 with lapped base and 2 scythe high speeds.
Anyone get these chips stable 4.4ghz to 4.6ghz ?? I'm stable at 4.2 and have low temps want to push higher but am having trouble.
Load bios defaults, from OC TWEAKER section set the multiplier to TURBO.Quote:
Could go higher if I could figure out how to lock the 21 multiplier. I turn on the 21 multiplier in bios and at idle it is 21 but under 100% load it drops to 20.
Than disabled speesteep, C-STATE...and put the voltages you know.
The multiplier will remain to TURBO-21.
If so it won't work( P55 EXTREME has a little different bios than P55 PRO) set the multiplier to 20 in bios and in windows raise the multiplier in Oc tuner to TURBO.
For 200 BCLK i use 1.279v, and for 4ghz i use 1.886 PLL.
For 4.3-4.4ghz i think vcore is esential ...But it may be need 1.4-1.45v
update result
prime/linx not stable (high temp)
room temp 30-31C
http://img687.imageshack.us/img687/7...0sp32x4r30.png
http://img41.imageshack.us/img41/788...0205011125.png
4.4 is my highest so far. Gets very voltage hungry after 4.2 and having a P7P55D Deluxe means I have a max PCH of 1.15v which doesn't help.
http://img.techpowerup.org/100313/696.jpg
http://valid.canardpc.com/cache/banner/1073208.png
(I'm johnnyfiive on TPU forums btw)
Has anyone else found 21x to be a complete PITA?
I wish I had a 21x multiplier. The highest multiplier my motherboard reaches is 20x. BTW, wat vtt, pll, and pch voltages are you using batmang?Quote:
Originally Posted by batmang
The highest I got is 4.35ghz (200x217) with 1.36 vtt, 1.80 pll, and 1.05 pch. I need help getting it to 4.4ghz.
http://i45.photobucket.com/albums/f1...0/OC435ghz.jpg
Ugh bummer, no 21 at all for you? :down:Quote:
Originally Posted by csq2
I don't recall the exact vtt, but it was around 1.4vtt if I'm not mistaken. As for PLL, 1.8v, and for PCH 1.15v.
Thanks. Is 21x always there for you or do you have to enable turboboost or any other function.
I'm running 21x multiplier, Gigabyte p55a-ud3 f6 bios, they let me key it in.
I do have turbo boost disabled for stress testing.
I'm up to 4.4ghz trying to get that semi stable. As long as I can play all my games and benchmark I'm happy.
:S i got a x24 MP ? ?
http://i44.tinypic.com/fcibep.png
Using :
Asus Maximus III Gene
I5 750
4Gb GEIL DDR3-1600 Black Dragon
XFX HD4890 Black Edition
Heatkiller 3.0 1156
Some other OC :
http://valid.canardpc.com/cache/banner/1103114.png
http://i43.tinypic.com/30kx6d3.png
Anybody with i5 750 + MSI GD65 + GSKILL PIS 2200 cl 7?
http://img413.imageshack.us/img413/4...inxerror18.jpg
I can't seem tighten the ram....
7-9-8-24 is the best i can do at the moment
7-8-8-24 is not even bootable :(
P/S: Please ignore the Linx result .....was just trying to show a cpu-tweaker tab for reference :p:
Anyways test environment was WIN7 Ultimate 64bit under diagnostic mode for max memory testing
My other screenie will show that cpu was running at 100% & mems at 98%
Please correct me If I'm wrong :)
Thanks!
Got a newish batch L948B659 and a P55A-UD4 with some LV Kingston 1600MHz CL7. Will get results up tonight :)
Ok so I did a little tweaking over the holidays and managed to get 3.8ghz stable at rather surprising voltages. It passes over 6hours of p95 large fft's and over 8hours of p95 blends and I ran 20 runs of Intel BurnTest @maximum stress and it passed with flying colours.
CPU-Z and CoreTemp (it was pretty cold in my room during the stress test, it usually gets around 65c under full load in intel burntest)
http://img88.imageshack.us/img88/4215/capture2yn.png
Best runs in Intel BurnTest
http://img263.imageshack.us/img263/4673/capturepr.png
Bios Settings:
Frequency:
CPU Clock Ratio: 19x
QPI Clock Ratio: 32x
Base Clock: 200mhz
Memory Multi: 10x
Memory Timings: (memory is rated; 2000mhz@1.6v, 9-9-9-27)
Cas Latency Time: 9
tRCD: 9
tRP: 9
tRAS: 24
Voltage Settings:
CPU Vcore: 1.16875v
QPI/Vtt: 1.150v (1.1v is stable for lower memory frequencies)
PCH Core: 1.050v
CPU PLL: 1.700v
DRAM: 1.600v
Advance CPU features:
Intel Turbo Boost Tech: Disabled
C1E Support: Enabled
C3/C6/C7 Support: Enabled
CPU EIST: Enabled
Oh and my i5-750 is from Batch#L937B557, I picked it up late last year. Also my motherboard is a Gigabyte P55A-UD4.
Haven't saved my stess results till this point, but I will add those tomorrow, after stressing over night. So far this result is stresstested Prime and OCCT stable though.
vcore: 1,20v (bios value)
vtt: 1,25v
vdimm: 1,6v
I'm quite happy with it up till now: :rolleyes:
http://i41.tinypic.com/34j9f07.jpg
2 questions....
How do I find the stock voltage of my i5 750?
I read somewhere that your Ram voltage has to be within 0.5v of some other voltage otherwise it may cause harm. Does anyone know what this is?
VTT has to be within .5 of DRAM voltage. It doesn't matter as much if you're running stock, but above 1.67V I wouldn't take risks.Quote:
Originally Posted by mejobloggs
To find the stock voltage, leave everything on auto, boot into Windows and run Prime95. Whatever is your voltage reading on CPU-Z during load is your VID.
Aah voltage under load, I see.
But I've read that CPU-Z voltage readings are actually less/more than what the 'physical' voltage is because of vdrop or something?
Sorry for the noob questions, just trying to learn
It's a bit weird about VTT should be within .5 dram voltage. My ram says it's rated at 1.65, and bios says default vtt is 1.1, so just by being at default it's outside the range :(
vDrop is the difference between what you set on the BIOS and the actual reading. vDroop is the difference between load and idle voltages.Quote:
Originally Posted by mejobloggs
The range only applies when you go above Intel's maximum reccomended DRAM voltage: 1.65V.
So CPU-Z is the real voltage (actual reading)?
So if I want 1.3v.... If I set 1.3v in my bios, then run Prime95 and CPU-Z reports 1.2v, than means I have to set my bios to 1.4v for it to actually be 1.3v?
Is this the same for other voltages such as vtt and dram?
Since motherboards usually don't have a built-in multimeter, it's not the actual voltage running through your core. CPU-Z is more accurate than what you set on the BIOS, because it uses some special circuitry to read that voltage. I believe the vDrop is not always the same, but it could be.Quote:
Originally Posted by mejobloggs
As for the different voltages, the vDrop isn't always the same.
i5-750 #batch L939B255 + ASUS MAXIMUS III GENE + G.SKILL DDR3 4RH/2000 (2GBX2) CL 9
http://i885.photobucket.com/albums/a...g?t=1272236836
http://upic.me/i/gm/sacoolza.jpg
Hello, first post!!
Could someone with msi p55 gd65 post here his bios settings 24/7 for oc 3.8/3.9/4.0?
Also i use 1.8 bios and now im @ 3.7 (19x195) vcore 1.304 idle 1.344 full load.
Go 200 bclk and push a little the vDimm also ;)
bump for this, Im trying my first OC and am interestedQuote:
Originally Posted by alexopus6
i try with 200 bclk but need more vcore and i'm trying to stay low.Quote:
Originally Posted by Eeky NoX
I see oc at 3.7-3.8 with 1.25-1.28 vcore (i set vcore at bios 1.288 with low vdroop and at cpu-z 1.304 full load 1.344). How i can have multiplier x21?
Also i dont know maybe its bios (1.8, latest) and i was wondering other users of msi p55 gd65 what bios use?
Is there anyone with 8GB ram that has overclocked their i5 to 4GHz? My Maximus III Formula has been playing silly beggars all day after I fitted another two ram sticks in.
Finally got onto Windows and am at the desktop at 3.6GHz with 1.2vcore and 1.27VTT... hopefully no detrimental effects in the long run with that sort of VTT. 4GHz required 1.19VTT with 4GB ram in comparison.
Yes, but I'm using a Gigabyte P55-UD3R motherboard with 4GB of G. Skill RAM and 4GB of Corsair XMS RAM (both DDR3 1600).
Wow... 1.23 vcore? Lowest I've seen for a 4GHz overclock, what's your VTT at those settings? Thanks.
I have it set at 1.19.....I built the system back in November and it's been running great ever since. I'm still using an early beta bios for the Gigabyte MB too (why change what's working I always say).Quote:
Originally Posted by Salami
anyone tried a i5-760? i got a L018B073. havent tried overclocking it yet as I am waiting to get some ram.
Im about to get either an i5 650, i5 750, or i5 760. The 650 is $110, the 750 is $190 (local pickup at MC), or the 760 is $190 - $6 BCB.
Anyway, going in a Gig P55A-UD4P with a TRUE for cooling, and is really for gaming and browsing only. Gaming is with two 470s at 5760x1200. So with the high res and GPU bottleneck will I see an advantage with the quad cores?
Also, the board was a refurb off ebay, I never used it. The 760 is not listed as a supported CPU yet, so I dont know if I want to risk needing a BIOS update.
Anyway, expected daily OC would be 4.3-4.4HT for the 650 or 4ish for either quad.
I would just get the i5 760. Worst case scenario you sell the motherboard here and get one that supports it.
Can you force Turbo to stick with 21x and not go higher for less cores being used on the i5 750?
I got the board refurb on ebay, cant really resell it without testing it. Also, its the one I want.
Yes, you can.
Is this any good? I dont't know much about i5's.
http://i34.tinypic.com/2nb7iux.jpg
3,6Ghz @ 1.15v BIOS
It's nice....but it's not really a high OC compared to most around here.
Check out the guide linked in my sig to push it to the limit :up:
This is about my limit it seems at least after a few quick tries to go higher. Don't really care to give it more than 1.35 vcore and 1.3 VTT. This with 1.33 vcore in BIOS. C1E and EIST are on as you can see in Real Temp.
http://img.techpowerup.org/100828/4.0.png
Hi,
I'm having a ton of trouble reaching 4GHz at any sane voltage.
I read miahallen's guide (thanks dude :up:) over and over again and isolated bclk and max memory. But when I
bump the multiplier up, I can't seem to keep it stable no matter what VCORE I use.
Is there a direct correlation between CPU frequency and VTT voltage?
I settled with nice and fine 215bclk at 1,27 VTT voltage and memory at 1720MHz 6-6-6-20 :up:
It is prime stable for 11hrs and linx 60 passes.
Could it be that upping the multiplier might need upping the VTT voltage as well besides upping the VCORE?
to make a fast test try with lower bclk (200x20) or (190x21) but with the same vtt with occt linpack and if its still not stable u prolly need more vcore.
My i5 750 need almost 0.1 v more from 3.8 ghz to 4 ghz to pass 2hours occt linpack(yes my cpu isnt great).
Hmm, you were right. Before it would've crashed already, now it runs for like half an hour. Is it stable is hard to tell, but we'll see.
Thanks.
Could somebody please post some voltage settings that I could use as a base for overclocking my core I5 760 with a maximus III Gene please?
vCore 1.3
VTT 1.2
vDIMM 1.65 (or 1.66 if 1.65 is not available)
PCH and PLL 1.05 and 1.8 respectively.
Start working your way up from there. You should read this too. Great
guide, explains almost all of it except the fine tuning part :D :up:
thank you :) I would try 1.3v but at 1.25v and 4ghz my cpu hits over 70 celcius. Im using a Corsair H50 with two fans in push pull and Arctic Cooling 5 TIM. Also my CPU has no VID apparently. No matter what software I used it wouldnt show my CPU VID.
Load system optimized defaults and enter the bios immediately.
The value under hardware monitoring tab is your VID (+/- of course).
Consider remounting the H50. 70° is a hell lot for such a low vCore. Though my setup leaves H50 in the dirt and thus not directly comparable, I'm seeing
temperatures in 70-75 range with massively undervolted fans when running same frequency and pumping 1.4v through it, running IBT.
Ive remounted the H50 this morning. I had too much TIM on the CPU at first so I used the Arctic Cooling two step cleaning kit on the CPU and H50. I waited 5 minutes for the CPU to dry and put a pea size ammount of AS5 in the middle of the CPU . Then put the cooler onto the CPU at a slight angle to remove air bubbles then tightened the cooler as much as possible. I have the CPU running Prime95 now with a half hour with the voltages you posted but the CPU is @ 1.56V and its maxxed out at 72 celcius. According to Intel the max temp the CPU is good at is 74.2 Celcius. Maybe my CPU isnt a good Overclocker. Im not going to Prime run this for more than two hours. I dont see the need to do so.
PS. Core 0 is @ 72 Celcius , Core 1 is @ 68 , core 2 is @ 66 , Core 3 is @ 67. Im sure when the AS5 settles the temps should even out and lower a little.
[EDIT] I think I might have found why the CPU is getting so hot. The H%0's radiator is picking up heat from my GPU. The GPU is only about an inch away from the rad. Im going to move the rad to the top of my case and turn the fans around to blow air into the case.
That is a new one for me regarding Intel. I know they are good to go anything lower than TJmax, but this is first time I hear about 74.2°C.
My personal preference is TJmax - 15°C. Also, Intel themselves are sending CPUs to retail with fans not capable of holding those CPUs at less
than 74.2°C when loaded heavily.
Hope that is typo CPU@ 1.56v :D
According to Intel max safe vCore is 1.55 for Core i5.
So, you mentioned using 1.25v@4GHz? Was it stable? My numbers are not necessary if you already had stable OC with lower volts.
Sorry. I meant 1.256V on the CPU. Also I reckon the heat from the GPU is effecting my H50's rad so I will move it to the top of my case and turn all the fans around. This might help all round cooling anyway.
Yes its dead stable here after an hour of Prime 95 with 1.256V @ 4GHZ. I dont a lot of tweaking in the past 4 hours to get it stable. Gotta love the Turbo V and RC Tweak it for this motherboard.
Seems like a nice sample if it needs 1.25 vCore only :up:
I spoke too soon. It done 58 minutes 30 seconds and the machine hung. I realised one of my fans for my H50 was running a bit slow so I increased its speed by 10%. Ill do more testing now.
[EDIT] in system defaults in the bios under /power/voltage monitor it shows CPU VOLTAGE 1.085. I take it thats my CPU VID? Is this high or low for a 760?
[EDIT2] I managed to lower the temps by 2 celcius. I reseated the cooler again. I still had way too much TIM on the cpu. The stuff was everywhere. This time I spread the tim with a plastic debit card acrss the CPU until the CPU was completely covered. So this time I am confident that I have just the right ammount of TIM on the CPU because I was pushing down on the card while spreading the TIM. I will have to wait a week to ten days for the AS5 to settle now before the temps go down a little.
/\I have the same VID. Seems to be an OK batch voltage wise, but limited in how far it will OC.
Mine runs fine with:
1.2V for 3.96GHz [22*180]
1.3V for 4.19GHz [22*190]
1.375V for 4.29GHz [22*195]
0.925V for 2.8GHz [21*133] + Turbo Mode
Just a bit bummed I can't get a stable 200bclk, 4.4GHz would've been nice round number.......
I got it lowered by 6 celcius on 100% load by lowering the voltage to 1.21V and I have the CPU at 3.8GHZ. Ill give the AS5 to settle and try for 3.97GHZ (I would consider that 4GHZ) @ 1.2V. It passed 2 hours of prime95 small FFS. Next thing I need to do is replace the fans on my H50 because the one that came with it is OK for CFM and the other is loud as hell (motor whine) when its going hard.Quote:
Originally Posted by d_s_willoughby
Also my OS got a little bit corrupt from the few BOSD's I got (I think its because I am using raid0).
the few hot 100 degree days we had this summer. my 750 has ran hot.. i put it under load to check differences from winter to summer it went up to the mid 90's fast..
At first my 760 was hitting 80 Celcius under load but it was because I loaded up the CPU with too much TIM. So I cleaned it off and done it again but I still had too much TIM on my CPU. This time P put a tiny ammount of TIM on the CPU and spread it on the CPU until the CPU was barely covered by a light layer of AS5. If the TIM was any lighter on the CPU it would almost be see through lol. I made sure all the CPU was covered. Its just that one core thats getting too hot. The others never reached more than 68 C while that one core was 72. With this lower voltage theyre only 3 celcius appart.
The AC5 is settled and I am running my 760 @ 3.9GHZ - 1.2V - 65C - 100% load. Passed Prime95 2 hours. Thats stable enough for me.
this is what my i5 750 needs to run these settings.. vtt is 1.37 i ran it there for about 9-10 months..
http://img823.imageshack.us/img823/4917/47578621.png
What is VTT and VDimm? I dont see those in my Maximus III Gene bios.
VTT is IMC Voltage and vDimm is DRAM Voltage in your BIOS ;)
Or you're searching the explanation what are those voltages?
Thank you. I just needed to know what they were.Quote:
Originally Posted by Bullet92
How far is smart to go with voltages on i5 750(for benching)? I was running 1.480V and my hottest core was 62°C after 20 passes of lynx. Does high QPI frequency hurt's stability?
As long as the CPU reacts good on the voltage, keep pushing it. You're on water cooling right?
That's pretty high voltage to run linX test on it. QPI effects the stability of course so try to lower it and than find max CPU. When you find that than go for higher QPI frequency.
Hi guys, this is my setup:
MB: Asus Maximus III Formula
CPU: Intel i5 760 + Noctua NH-D14
RAM: Corsair DDR3 4GB
And I've easily got to this result:
http://img301.imageshack.us/img301/7...finshed.th.png
Lucky chip?
my new cpu i5 760
@ 4GHz 1,21v bios :)
http://www.upload.ee/image/989710/ev...0_CL8_4_ok.png
amazing! have you increased Bus speed above 200 with lower multi? lets say x19.
i noticed that 760 can reach easily 220 but i don't know about stability
222BCLK seems ok, prime 15min OK, 223 freezed after 5min.Quote:
Originally Posted by acos
with 1 core 228 superpi OK. 230 freezed.
May i ask what should be our goal? to reach higher core speed with less Blck or the other way?
for example: 19x220 =4180 is better than 22x200 =4400?
Guys, I've been running i5 750 @ 2,67 GHz with Gigabyte P55-UD6 mainboard and 2 x 2GB DDR3 G.Skill Ripjaw Series 7-7-7-21 @ 1.5V @ 1334 MHz (XMP profile). I wan't to moderate overclock my computer without touching voltages. As as understand BUS speed controls CPU, Memory and QPI link speed. Of course, you can set ratio, so if I manage to set up my memory at same speed I don't have to touch voltage, same for i750, cause I know it can go higher with default voltage. One thing that intrests me is QPI link. Lot of people told me is that's better to have it around default values. Is vtt voltage connected to QPI link speed? I mean if my QPI link goes higher I need more vtt voltage? Also, what are good number to keep QPI link speed?
I know this thread is old but i gotta show some love for i5 lynnfield ;)
http://i.imgur.com/Rdeo5.png
i5 750 | 3400Mhz | 17 x 200 | 4C | Vcore 1,11875v | VTT 1.3V | CPU PLL 1.85v | Asus P7H55-M/USB3 | Air | Scythe Rasetsu | 65c
http://i.imgur.com/nKS6F.png
i5 750 | 3600Mhz | 18 x 200 | 4C | Vcore 1,16875v | VTT 1.3V | CPU PLL 1.85v | Asus P7H55-M/USB3 | Air | Scythe Rasetsu | 68c