5Ghz 1.34v in bios! Unreal!
http://img819.imageshack.us/img819/7...61tlinx134.png
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5Ghz 1.34v in bios! Unreal!
http://img819.imageshack.us/img819/7...61tlinx134.png
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Quote:
Originally Posted by emertX
How long do you want me to test prime for!Currently testing setting at 1.34v 5GHZ custom run 960k!
@ bro20000
and which voltage do you have load? The P67A-GD55 which i tested overvolts ~0.05v at load.
btw please test Prime 26.4, this is more stressful as IBT and LinX.
Same here P67A-GD65 overvolts alot 1.34v bios 1.38/1.4v on load in some cases! Have been onto Msi and there saying it will be fixed in the next released bios! Am testing prime now 960k custom! Currently on test 11! 1.34v in bios!5Ghz! How long would you give it! I have work at 3 and dont like having the pc on when am not there with watercooling and that! 1.34v 5Ghz just fail in prime 1hr and 30mins in thread 8! I will try 1.35v later!
the newer bios more me converted in more bsod , are u expecting more blue screen than before ?Quote:
Originally Posted by zoob
LinX with SP1 in Windows 7 decimates Sandy Bridge CPUs. Takes significantly more voltage for me now to be LinX stable than it did without SP1 and significantly more than it takes for Prime 95 8 hour stability. Temps also go up 15-18C higher on all cores in LinX w/ SP1 vs. Prime 95 or anything else I've tried :eek:Quote:
Originally Posted by Chri$ch
Yeap,it it's linx with avx stable,your cpu is rock stable for everything else ;)
Got mine 5 ghz 1.4v game stable, HT on....boy was it flying....7.6 sec 1m superpi....even at just 4 ghz, in Morrowind, I gained about 40 FPS over my QX9650 at 4 ghz....and I think MW is single threaded too....
I didn't mess around to see if I could lower voltages or not though. My temps in prime95 small FFT, 26.4 64 bit were just TOO high....88C on cores 2 and 3 on a Venemous-X (mounting problem??) after about 20 seconds...so I quickly closed the test and went to play games instead. The fact that it lasted even that long at temps that high is a good thing though..I was actually expecting an error or bluescreen in 10 seconds...didn't get any...just high temps...
PLL overvoltage was enabled...
Using garbage memory timings since I've never had an i7 before...
I only knew to keep about 0.5v between memory and vtt(QPI??) voltage, and keep memory at 1.5-1.6 and vtt at 1.1...that's the limit of my knowledge so far....
I'm sure I can shave off some time on Spi when I learn how to use the memory settings....
The fact that it lasted even that long at temps that high is a good thing though...
I'll worry about how low I can go with voltages later...not in a hurry...
Not gona blow up my chip with priming at those temps...
#L045A998
BTW anyone know why my Venemous X swivels (even more than my TRUE black) even when i apply the 70pound screw? The mount is as perfect as possible...but it seems like the pressure lever is barely applying any pressure at all..
I put some powertape (2 layers) on the block so it increases pressure... the pressure screw is pretty useless indeed... rock solid now...:up:Quote:
Originally Posted by Falkentyne
Impressive CPU man !!
What is powertape? o.o
Electrical tape I assume. Any tape works, few layers to add even 1-2mm make the pressure much much better.Quote:
Originally Posted by Falkentyne
Duck tape / gaffer tapeQuote:
Originally Posted by Falkentyne
I've got some results to report:
My 2500k is linX stable (20 runs, all memory used) at 4.9ghz using a vcore of 1.385. I'm using the latest linx from the first post of the linX thread on this forum, but I'm not running windows 7 sp1 yet.
At 1.385 vcore, my setup is not prime stable.
I tried to recode some movies with Handbrake. Handbrake is the most cpu intensive program I run (other than benchmark tests) on my computers, with the usage monitor showing 100% utilization on all four cores while running.
At 4.9 ghz at my linX stable vcore of 1.385, I bluescreened with a stop 124 error, which in this scenario I interpret as insufficient vcore. So I bumped the vcore up two notches to 1.395, and I recoded two rather long movies without any issues (it took about 7 hours).
So for my purposes, I would have to assume linX (sans SP1) is not an accurate assessor of system stability. Now even at 1.395 vcore, I'm not prime stable, so perhaps prime stability is overkill for my needs. I plan on downloading SP1 this weekend and seeing what my new linX stable vcore turns out to be.
Just to be clear, to enable AVX instructions on these chips, one must install windows 7 SP1 (for which there is a link a few pages back in this thread) and install the latest linX (from the first post of the linX thread on this forum). Is this correct? Any other actions that must be taken?
That is correct, and I would guess it won't pass LinX with AVX running. I was amazed at the difference in heat that installing SP1 made for LinX, nuts. No other action needed, watch the GFlops and temps fly on up :p:Quote:
Originally Posted by drnick
Ok, thanks Tool. I am eager to see what my linX stable vcore turns out to be with SP1, and if my temps will be too high to run at such a voltage on air cooling (I'm using a venomous-x currently and the linX temps without SP1 were peaking in the mid to high 60's).Quote:
Originally Posted by tool_462
By the way, does anyone know if the new AVX instructions will speed up video encoding?
They sure will, as soon as developers start using them. ;-)Quote:
Originally Posted by drnick
I've been scouring the internet for AVX enabled apps, haven't found any yet.
thread title is wrong
I saw you post Honda, so I thought I'd take a look. Hehe, you're right!
My batch is L042B243 #1052 5.4Ghz@1.54v If it matters any;)
http://www.overclock.net/attachments...ist-4.6ghz.jpg
This is just a 46 x 100 and at 1.32 on water
Ram is set to 1.57 volts
It's getting clocked at 800mhz in CPU but when I pull the info it says PC 1067? I have ADATA 1600mhz 8 GB. Is there a way to read it in CPU at 1600mhz?
I have 9 9 9 24 1t and it reads 9 9 9 24 2t in CPUz. the ram is ratted to 1.55 to 1.65. What changes should I make
It's prime stable and doesn't touch over 60 under load for hours.
I know I can go higher but i want to fix my ram issue.
Would help if one of the CPU-Z windows was on the 'memory' tab.Quote:
Originally Posted by Quad-Damage
CPU-Z will read 800.0MHz for DDR3-1600, remember, it's dual-channel.
It's not dual channel that makes it 1600, it's dual data rate. 800mhz is correct cause that is the ddr clock rate. Commands are sent only on one side of the clock whereas data is sent on both sides of the clock, hence the DDR.Quote:
Originally Posted by ugotd8
As far as AVX temperatures, it should be no surprise why it's running hotter, you essentially are using twice the amount of ALU transistors that you would've been using in SSE. AVX has 256 bit registers whereas SSE only has 128bit registers.
Typo, thx.Quote:
Originally Posted by famish99
Interesting though, when running linpack with AVX enabled I am now getting the huge GFlops numbers, but each thread is only at %50 load per task manager. Load wattage says it's ~115W on the proc.Quote:
Originally Posted by famish99
In what way do you mean it is more stressful?Quote:
Originally Posted by Chri$ch
Clock for clock I am seeing 64-bit Linpack with AVX using about ~20% more power than 64-bit Prime 26.4. Maybe once Prime also makes use of AVX then it would be worth comparing the 2 again.
Technically there are only 4 cores, but with HT on, load is calculated in a rather strange way. Load is calculated by how much the front end (fetch/decode) is being taxed because typically instructions coming in is equal to how loaded the entire chain is.Quote:
Originally Posted by ugotd8
HT takes advantage of the fact that most applications can use every execution unit the chip has by faking another core and fetching instructions from another thread. However, linpack is designed to max out the execution units with each thread. This means you have two threads competing for the exact same resources so you can only serve each thread at 50% utilization, but in reality your core is maxed out because pretty much everything is being put to use.
Finally got Prime95 stable at a relatively low voltage at 4.8GHz.
I left the Power Features on Energy Efficient. Also, I had to use a fixed CPU VCore (without it I had trouble booting in windows because using offset mode with LLC causes double VCore compensation). During the Prime95 small FTTs run the cpu-z vcore read 1.416V for almost 99% of the time with a couple of spikes to 1.428.
I tried everything I could to stabilize at a CPU PLL of 1.700, finally had to settle for 1.750.
Memory is Corsair Vengeance 2x4GB CL8 DDR-1600, slightly overclocked to DDR3-1866 with slightly looser timings (VIN1 in the screenshot is VDIMM).
At idle CPU-Z shows 1.368Vcore but my core speed is at 1600MHz with a 16x multi and HWMonitor shows a beautiful 6W power draw from the processor with temps on the cores roughly 6-7c above ambient. All in all this might be my 24/7 OC, when I run the lightwave renderer power draw never exceeds 95W and temps stay in the mid-60's on the cores. Very fast, cool and quiet too. Initial tests tonight show I may be able to lower VCORE as well.
http://img403.imageshack.us/img403/6455/good48prime.jpg
people do not waste your time with linux or intelburnintest , i was stable at 4.7 ghz with 1.31v 12 h linux and 12 h intelburnintest but i got bsod in less than one hour with prime 2.64
What would you recommend time wise on prime 2.64 to be fully stable!
4 hours would sufficeQuote:
Originally Posted by bro20000
2600k - batch L042B208 - cooled via chilled water
Below is Areca 1880, 13xR0 Acard 9010 - new 4x core pcm05 WR :D
5315 is pretty close to max unless a new bios surprises.
http://img140.imageshack.us/img140/541/35087.png
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What temps are you getting on chilled water with 2600k! Am thinking of going to chilled water!Quote:
Originally Posted by SteveRo
Is this only something new or have you noticed bumps in vcore from the start? It wouldnt be the TIM you used more like the mounting pressure..Quote:
Originally Posted by bro20000
All sorted now cpu block needed to be tighter!
:up:Quote:
Originally Posted by bro20000
I prefer just gaming, unless you have a second computer to use at the same time.Quote:
Originally Posted by owikh84
Especially when your temps are skyrocketing, you can just do a VERY quick run of prime95 (even 30 seconds!) just to make sure that you don't immediately crash. Because if you crash within 5 seconds of launching prime, you actually risk OS corruption if you run other programs....
So are you able to use lower voltages because your temps are real low or because your chip doesn't require more than 1.21v for 5.3Ghz? Also, I thought these chips had a cold bug around 3-7c, did you have any issue with this?Quote:
Originally Posted by SteveRo
Batch L040B165
http://images.hardwarecanucks.com/im...7/OC/32m-4.png
Dont laugh at efficiency, was run with W7. I also realize that 2 of the tabs are cpu haha. Been at this 10 hours and 10 beers. XP and cold tomorrow
What are your temps? That is the highest OC Sandy Bridge I've seen yet! :up:Quote:
Originally Posted by Eldonko
I don't know the answer, but either he got a really golden chip, ot it seasm more likely to be a CPU-z bug, it's not reading the right vCore.Quote:
Originally Posted by Utnorris
I ran prime blend last night on a 2500K @4500mhz, got an error after 3h42min. This was with 1.270vcore which was 50runs linx+sp1 stable. Should I up the vcore ?
When I get an error in prime it also always seems to be on the last core ?
My PC is 1 hour prime stable at 4.5 1.285Vcore, lowered it to 1.275, haven't had an issue in any game... if you want it to pass your stability mark, up the vcore one notch to 1.275, otherwise leave it and enjoy the power of SB
Think your pc will be fine for daily ops... read the above :p haven't had a hickup yet...Quote:
Originally Posted by makaka
Good morning guys,
Based on what I've seen so far - for cooling for SB, ideally - I would have the following -
1. For 24/7 - megahalems or super megahalems with good case air flow - with some small luck and skill - 5g stable 24/7
2. For benching - either very good chilled water - down to around 0C (needs to be better than mine) or spring for an SS.
Preferably an SS with some temp adjustability to cope with SB cold problems.
A few lucky folks have found such a good chip that they can reach 55x+ multi's on just aftermarket air.
Based on what we've seen so far, these will likely be only the very lucky (or the very wealthy) few. :rolleyes:
edit - For SB I have not noticed lower volts needed when under chilled water.
Part of this is that I'm going after the max score and so operating at high voltage to try to get the max out of it.
The above run was 2x Coolit Boreas in series to a GTZ block, idle was about 16-17C at 1.57v (bios), LLC level 1.
Load temps? I need to check sometime - I'm sure its way up there. :rolleyes:
Quote:
Originally Posted by bro20000
Quote:
Originally Posted by Utnorris
He he..... then you will like mineQuote:
Originally Posted by Systemlord
http://i106.photobucket.com/albums/m...600K/57GHz.png
L042B074
Megahalems cooling
LinX
http://img37.imageshack.us/img37/419...nxfinal.th.jpg
Valid
http://valid.canardpc.com/show_oc.php?id=1609705
hallo, what is "cpu pll overvoltage" ? Is it dangerous to enable? I enabled it and that made me be able to bench with 52x ratio. plz answer I need to know what it is :)
Thx
Have just ordered a Hailea Ultra Titan 1500 for chilling my SB and 580GTX hopefully should get better temps but am not going to run to low because of condensation! Nice setup There!:yepp:Quote:
Originally Posted by SteveRo
pcmv at 1.61v, 53x multi, ht on, give you an idea of how cool SB runs, this under chilled water, good air probably not much hotter -Quote:
Originally Posted by bro20000
http://img29.imageshack.us/img29/407...chilledwat.png
yes a very good chip, congrats to the Mr. Eldonko, the best I have seen is 57x.Quote:
Originally Posted by Systemlord
Nice temps at 1.6v! Am running mine at 1.36v 5Ghz at the minute and get about the same temps watercooled! I hope chiller can brings temps down and stay at 5Ghz 1.36 or better!Quote:
Originally Posted by SteveRo
Get yourself some good mem and score a decent score :D Great cpu :)Quote:
Originally Posted by C-N
Thanks buddyQuote:
Originally Posted by Alex-Ro
Wasn't benching for Pi just max multi but ye will get round to Pi score one day... I have plenty more interesting things to play with atm.
Sorry that sounds a bit funny but Pi means nothing to me :sofa:
I use 32 meg Pi for testing new ram settings. The new Gskill F3-17000CL7 ram is awesome so far, last night I had it running 2256 at 6-9-6-24- 1T. It is indeed very fast ram and I would grab some by all means, I just bought another set. Will post up some new stuff later this morning.
Has anyone tryed G.Skill F3-17600CL7 got some coming tuesday!
Looking forward to results :)Quote:
Originally Posted by flesheatinvirus
The F3-17000CL7 Ripjaws simply rock. the 7-10-7-27 2G set can certainly run way faster at lower latency just like pt1T showed in his thread then its stated speed, Grab some guys this stuff reminds me of Team Extremes 1300 back in the day, super fast for sure.:D
Intel Core i5 2500K Batch: L038A789
Prolimatech Megahalems Rev.B + Cooler Master R4
MSI P67A-GD65 1.8b6 bios
G.SKILL PI-Black 3GB 1600MHz CL8
GTX260 ASUS
XFX 750W Core Edition
http://img220.imageshack.us/img220/1...47149vbios.jpg
http://img714.imageshack.us/img714/1055/4700mhz247.jpg
http://img560.imageshack.us/img560/3829/sys3xs.jpg
i7 2600k - 5Ghz - 1.425v @ bios
http://img25.imageshack.us/img25/3714/5ghz.jpg
@ kuziu:
Resize these huge photos, man...
Thanks, chilled water today, will post updates and rebench 32m on a proper 2d OS. I hope to get the 55x to work for me, I can go above 5500 with 54x but not with 55x.Quote:
Originally Posted by SteveRo
SteveRo I have the same chip, I will open my cpu box This Monday.. with an ASUS EVO.
All these 2600K screenshots with HT off don't mean squat. :mad:
Yeah, a motorcycle is faster than a car, doesn't mean I'd want to ride cross-country on one.
yep.. gotta look closely when people post this stuff I see for a good comparison.. prime stable with 8 threads going.Quote:
Originally Posted by ugotd8
i5 2500k @ 5.4ghz 1.452v air spi 1m sub7 http://i54.tinypic.com/oh5nki.png
Thought I was stable after passing prime95 blend, linx + AVX. Got a BSOD running SPECapc for Lightwave 3D 9.6. (http://www.spec.org/gwpg/downloadindex.html)
One more 100th of a volt on the VCORE and now can pass that too.
SPECapc LW render score: 451s
Beat that guys !!!!
You'll need the trial version of Lightwave as well: http://www.newtek.com/lightwave/specapc/
Noticed that. The last core is always the one to fail.Quote:
Originally Posted by KingLex
Quote:
Originally Posted by KUBA_TM
That batch is looking very strong. :up:
Whats the official criteria for submitting stable OC's to this, "i5-2500K/2600K batch number and o/c results", thead?
Seems like you guys are all over the place with stability testing.
Should I just pick a test, any test ;)
You just asked the question of the month. :-)Quote:
Originally Posted by OC Maximus
Most are saying linx isn't what it used to be, on the SB platform. I think 1hr small FFTs is the latest consensus, although TBH, I don't know. I know I can pass linx + avx with all mem selected, prime95 small FFTs and SPECapc LW, so I'm calling mine good at 4.8Ghz.
Well, once you fellows figure it out let me know and I'll give her a run.Quote:
Originally Posted by ugotd8
List updated lads, plz list ya batch nr Plz
Grab here : Sandy Bridge Batch List
Quote:
Originally Posted by ugotd8
Linx+AVX 4C4T, pull out much more whats and it's more stressfull then Linx+AvX 4C8T. But runned prime for 8hours with 1.425v, 4C8T...:up:
Does it?Quote:
Originally Posted by st0ned
Ran these tests with HT On and Off with SP I installed.
You dont have AVX enabled,get latest linpack smartass.
Troll fail.Quote:
Originally Posted by crossg
Hey I was simply asking a question not trying to be a smart ass!Quote:
Originally Posted by Alex-Ro
Ht is On on both because I wasn't in the mood to reboot and turn it off. But the difference would have been larger with HT off.Quote:
Originally Posted by crossg
W7 + SP1 ( with AVX ofc ) - Linx in only 4threads, as you can check for the ~50% load in each core. Max core temp of 64ºC, with 135.25W pulled and note this was the 1st test I ran, so if the temps should be lowered should have happen in this one.
http://img69.imageshack.us/img69/8426/hton4t.jpg
Same sh*t as above, but linx pulling 8threads, <120W beeing pulled out, max temp was 55ºC.
So theres at least a 15W difference.
http://img407.imageshack.us/img407/1627/hton8t.jpg
Note: voltage was the same, difference in CPU-Z is due to normal vCore fluctuation
It's good to see these CPUs are surviving when you guys push so much vCore and keep LinXing and Priming.
130W and 120W sounds like a power-hungry CPU, anybody got a watt-meter to measure the total usage out of the wall?
:)Thanks for the info. Big difference!:)Quote:
Originally Posted by st0ned
Depends on the vcore but 5GHz on my UD5 @ 1.4v is pulling just over 300wQuote:
Originally Posted by Sam_oslo
Yeah, depends on vCore, but usually the power-usage makes a big jump over a cretin limit. Your 1.4v may just be that limit? Those guys are pushing more vCore than you.Quote:
Originally Posted by C-N
Don't have a kill-a-watt, but I'm running a 2600K @ 4.8GHz with 1.42V on load. According to HWMonitor, my highest load is 115W after running prime small ffts and linx + avx.Quote:
Originally Posted by Sam_oslo
How accurate do you think HWMonitor is in regards to processor power usage ?
I don't think it's accurate at all...Quote:
Originally Posted by ugotd8
Try this.
I don't know how accurate it is, but these CPUs are 95W. When HWMonitor shows 115W it may still be a moderate increase in real power-usage. But I've seen 120W and 130W from some in last page, and then maybe it's a good idea to measure it from the wall.Quote:
Originally Posted by ugotd8
Thank you. Here's what I got, if I got the numbers right:Quote:
Originally Posted by zalbard
http://img703.imageshack.us/img703/9915/shot0001ka.jpg
What I don't get is that in BIOS I have my max power limit set to 120W and during prime95 or linX runs it never throttles (my multi is always at 48).
None of these tests prove anything. Passed the prime for 12 hours and manually stopped it. 15min later the OS froze while typing an email. It was set to 45, V1.33, LLC Ultra high. Don't even believe in high OC now.
A 12H small-FFT means the CPU is stable.Quote:
Originally Posted by ghmz
If you run Prime small FFT, then that BSOD means you have to check you RAM. You can check it with LinX or a good mem-test.
If you run Prime Bland, usually it means stable CPU and RAM, but not necessarily. The CPU may still be unstable. Then you need to check it with Prime small FFT again.
Well, I didn't get the BSOD. The system just froze. The RAM is running at stock settings. What else do I change?Quote:
Originally Posted by Sam_oslo
You didn't say what Prime?Quote:
Originally Posted by ghmz
Depending on what Prime you run (small FFT or Blend) you may have to check your CPU or RAM after a BSOD or freez. You RAM may still be unstable at stock, tho,
Was running small FFT.Quote:
Originally Posted by Sam_oslo
12H of that means your CPU is stable.Quote:
Originally Posted by ghmz
Run a mem-test, or LinX. You may need to add more vDimm, or loosen up the timing to stabilize the RAM.
At least this is how it works for X58 (and all earlier CPUs). SB shouldn't be different, but those who have tried small FFT without results on SB have to let us know tho.
Small FFTs still does mean CPU only. Once I got to where small FFTs would pass for an hour, I had to notch VCore up one (100th of a volt) to pass Prime95 blend. I knew my memory was right where I wanted it and it had passed memtest so it had to be vcore. Actually, I also tried VTT (VccIO on SB) but that had no effect on P95 blend.Quote:
Originally Posted by Sam_oslo
These tests *do* mean something. :-)
yeah prime blend is hard on those CPU , linx show everything stable for 24h while prime reboot computer in few hours or less .
regards
How do you run linx for 24h?Quote:
Originally Posted by makaka
You guys should be careful with LinXing too much or too long.
LinX is really harsh on the CPU, specially on those 1.4v+ vCore you guys are pushing. Don't kill that poor little CPU.
I've experienced what you guys are talking about prime vs linx, but in my seek for stability I've found a very interesting thing. I'll leave here what I did:
2600k 1.415v:
- 21 runs linX with Ht off stable ( it's in zalbard linX club the screenshot for this ).
Went to bios enabled HT:
- Prime BSOD 0x000124 on me like 15secs after start :rolleyes:
- LinX 4C8T with [all] run for about an hour (15/16 runs ? ) wasn't in the mood to let it end...
went to bios and bumped the vCore to 1.425, and left it runing prime for the rest of the night ( 8hours give or take )
-It was still runing today...
But when I tryed to prove me point earlyer on this topic, I got a BSOD after the 3rd run with LinX, having him runing only in 4 cores...
It's still run's a lot of time with linX in all the 8 threads...
I've tryed to bump, and reduce vCore so far from 1.4v ~ 1.43v in Bios the results are all the same, so give it a litle bit more VccIO ( 1.15v ) and it's still runing...
In the end I think with this sandy it is yet to be the perfect test, I would make the CPU pass a mix of them, then I would gladly know it's stable :up:
I use my machine for Lightwave so I've incorporated SPECapc into my testing. I was able to pass Linx & Prime95 but BSOD during a SPECapc Lightwave run.
By the way, our little CPU that could the (2600K) on air at 4.8GHz competes nicely with the big dogs (I realize none of those are OCed):
http://media.bestofmicro.com/8/L/255...0LightWave.png
Source: http://www.tomshardware.com/reviews/...ep,2692-6.html
My score when I completed a run at 5.0GHz was 435. Score at 4.8GHz was 451.
We won't even mention TDP or performance-per-watt. :rolleyes:
I would mention that yes, I just compared my $280 processor to a list of processors that cost a minimum of 3 times as much.
2600K, FTW
try 500 times and u will see will take about 14h and 5 min (at least this was here ) then run it a second time :D u will get over 24 hQuote:
Originally Posted by ghmz
Ok, I have an update here.Quote:
Originally Posted by Sam_oslo
So my 2500K was stable at 4.5Ghz with V1.33 for 12h according to prime, but still random BSOD.
I messed around with the AIDA64 Extreme Edition and accidentally clicked on submitting a report which scans for hardware and bah, BSOD again. Then I changed some vDimm settings, but still was getting the same BSOD on Aida64. Well, I thought what a heck and increased the cpu vcore to 1.34 and Aida64 finished the report without crashing.
Sound it is a ram issue , what prime are u running blend or small FTT ?.Quote:
Originally Posted by st0ned
Since you are using LLC high setting, if your load vcore is significantly higher than idle vcore, you may be unstable with idle vcore.Quote:
Originally Posted by ghmz
anyone running those cpu @ high memory frequency 2400 + ? please share your settings