PXAbstraction
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Sunday, February 12, 2012 5:07 PM
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Hey everyone. I'm at my wits end with this issue and I'm hoping someone here can help me find a solution cause I'm sure there is one I just don't see. I have a system I built last August with a Core i7 2600K and a P67 SLI. It's overall been a very solid system and I really like the mainboard except for one problem: I cannot achieve any stable overclocking with it. I followed JacobF's excellent overclocking guide in this forum which uses the same CPU I have and if I overclock it at all, it cannot stably run Prime95. Within seconds, multiple worker threads will terminate with errors. I have a similar inability to overclock my video card, even though it's an edition that's supposed to easily take an overclock. Any overclock at all results in instability. For reference, here's the overall specs of the machine:
Core i7 2600K
P67 SLI (Latest BIOS)
Corsair 8GB Vengeance
Gigabyte GTX570 SuperClocked
Auzen X-Fi Forte 7.1
Scythe Mugen 3 Cooler
SeaSonic 560W X-Series
Western Digital 1TB Black (System drive)
Western Digital 1TB Green & Seagate 1TB (External docks)
OCZ Synapse 128GB (Recently added, removing also due to stability issues)
Asus Blu-ray Reader
My first thought is that perhaps this power supply isn't strong enough to drive all this stuff. When building this system, I ran my desired gear through multiple configurator tools and was led to believe it would be sufficient. But given the instability I have when I apply any overclock and that my system got more unstable when I recently added the Synapse, I'm wondering if that could be it. I'm prepared to upgrade it but only if that really appears to be the issue.
Does anyone here have ideas as to what could be the problem here and what I may do about it? The gear I put in this system is supposed to be renowned for its overclocking capabilities and clearly many people have great success with it so there's definitely something in my setup specifically that's at fault. I appreciate the help, thanks!
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sotiri
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Re:P67 SLI Unable to Achieve Stable Overclock
Sunday, February 12, 2012 5:10 PM
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☄ Helpful
550W is the minimum recommended for GTX570 SC. You should add at least 100W for overclocking. I would be more comfortable with 750W.
post edited by sotiri - Sunday, February 12, 2012 5:17 PM
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wrinvert
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Re:P67 SLI Unable to Achieve Stable Overclock
Sunday, February 12, 2012 5:44 PM
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your PSU could be 1 issue also how much of an O/C are you trying to get? most people settle around 4.5-4.6 fairly easy, if your going for a 5.0+ you may have some issues
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PXAbstraction
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Re:P67 SLI Unable to Achieve Stable Overclock
Sunday, February 12, 2012 6:28 PM
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wrinvert
your PSU could be 1 issue also how much of an O/C are you trying to get? most people settle around 4.5-4.6 fairly easy, if your going for a 5.0+ you may have some issues
Ideally, I'd like at least 4.0 and that's what the stickied guide in this forum is supposed to allow for. I figure I would start there and see if I could go higher. I've also tried as low as 3.6Ghz though and still gotten instability.
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sotiri
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Re:P67 SLI Unable to Achieve Stable Overclock
Sunday, February 12, 2012 7:40 PM
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If you're going to shop for a new PSU, consider an 850W. This way, when the price of the GTX570's drop in a few months, you'll be well prepared for SLI.
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sotiri
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Re:P67 SLI Unable to Achieve Stable Overclock
Sunday, February 12, 2012 7:45 PM
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My 2600K OC'd to 4.5 real easy. With a little effort I was able to get to 4.6 and stay under 1.375V, which I believe is when CPU degradation begins.
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wrinvert
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Re:P67 SLI Unable to Achieve Stable Overclock
Sunday, February 12, 2012 11:58 PM
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i run 4.6 at 1.310 with out issues, honestly if you having issues at stock clocks you might have a bad/weak psu or some kind of ram timing issue.
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sotiri
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Re:P67 SLI Unable to Achieve Stable Overclock
Monday, February 13, 2012 0:26 PM
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Bummer!
I need 1.368V for 4.6. :(
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Blizzie
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Re:P67 SLI Unable to Achieve Stable Overclock
Monday, February 13, 2012 1:14 AM
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560W on that Seasonic PSU is plenty. Have you checked the voltage rails of your power supply under load with a multimeter to see if it's operating correctly? It could be that the PSU is not operating at nominal specifications.
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sotiri
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Re:P67 SLI Unable to Achieve Stable Overclock
Monday, February 13, 2012 1:39 AM
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I agree 560 is plenty at stock clocks, which he says he has no problem running. It's when he overclocks that he has issues. Do you really think 560 is enough for overclocking?
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PXAbstraction
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Re:P67 SLI Unable to Achieve Stable Overclock
Monday, February 13, 2012 1:52 AM
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Blizzie
560W on that Seasonic PSU is plenty. Have you checked the voltage rails of your power supply under load with a multimeter to see if it's operating correctly? It could be that the PSU is not operating at nominal specifications.
I appreciate your insight but I'm honestly not sure anymore if the 560W is enough. I went and checked Gigabyte's web site and they recommend at least 650W for a system running the GTX570 SOC card that I'm using. While the system does run fine at stock clocks, I'm wondering if maybe I am skirting the redline on wattage a little bit which is why overclocking isn't working and I'm getting instability with my new OCZ Synapse since installing it. The good news is I found an online retailer that has the 760W version of my SeaSonic X-Series PSU on sale for a really good price so I went ahead and ordered one to test this once and for all. If the higher PSU doesn't solve the problem, I'll return it. If it does, then I have my answer and I'll sell the 560W. I will report back here either way for sure.
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PXAbstraction
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Re:P67 SLI Unable to Achieve Stable Overclock
Monday, February 13, 2012 1:54 AM
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I meant to mention as well for people's consideration, every time I attempted to overclock before and use E-LEET to change voltage on the fly, whenever I tried to apply a voltage change, it would cause the system to hard freeze. I don't know if that's an indication of anything in particular but I wanted to throw it out there since it's never worked for me.
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Blizzie
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Re:P67 SLI Unable to Achieve Stable Overclock
Monday, February 13, 2012 2:07 AM
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sotiri
I agree 560 is plenty at stock clocks, which he says he has no problem running. It's when he overclocks that he has issues. Do you really think 560 is enough for overclocking?
Yes. I have tested it myself. I also have a UPS that shows power draw. 560W is more than enough. The fact that changing any voltage, even E-Leet locks up, is suspicious of a faulty PSU unit.
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PXAbstraction
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Re:P67 SLI Unable to Achieve Stable Overclock
Monday, February 13, 2012 3:16 AM
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Blizzie
sotiri
I agree 560 is plenty at stock clocks, which he says he has no problem running. It's when he overclocks that he has issues. Do you really think 560 is enough for overclocking?
Yes. I have tested it myself.
I also have a UPS that shows power draw. 560W is more than enough.
The fact that changing any voltage, even E-Leet locks up, is suspicious of a faulty PSU unit.
When you say you've tested it, in what sense do you mean? Have you tested it with a configuration similar to mine? Do you think Gigabyte's being overzealous in stating their card requires a 650W supply? I'm just curious on your perspective.
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wrinvert
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Re:P67 SLI Unable to Achieve Stable Overclock
Monday, February 13, 2012 8:07 AM
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they are saying boot the system and useing a good volt meter watch the 12v rail to see if it dips or jumps around.
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ZelmoQuad
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Re:P67 SLI Unable to Achieve Stable Overclock
Monday, February 13, 2012 9:20 PM
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560w is cutting it close in the sense that it’s not just about watts printed on the retail package. Away from the bench, in the real world, Quality of manufacture plus things like efficiency, magnetic saturation can and do, drastically cause performance fluctuations. Theses things, when operating near the edge, cause random instability and can trip the delicate balance of GPU/CPU/RAM. Even room temps effect a PSU's performance. So now put a heavy, OC'd GPU or 3 on line, OC the CPU and RAM, and the sucking sound grows as the PSU has to answer the calls for power. With all the stuff we buy to play, I could care less about paying another $60. I would buy anything less than a 1200w. I want to be able to run 3-ways or single GPU, OC at higher levels simultaneously. And I don't want to walk anywhere near the edge. More simply, at the end of the day, plug a Kill A Watt P3 between your rig and the wall. Get on line and play a game and watch what it draws at peak, double that number for a safe margin and go buy a PSU that matches that number. If you want more headroom to accommodate future multi-GPU, plan ahead. I have an 850 because CM gave it to me; it’s in my word processor, way overkill. But, as for the gaming rigs I would not buy anything less that 1000 and do, only buy 1200W. There are enough variables to deal with when OCing. Buy off the one variable that can mess with all the good parts you paid the big money for (CPU/MB/GPU/RAM). That has worked for me for many years. I've fixed my friend’s fried PSU’s, never had one myself. The criteria for buying a PSU should be: - Does the PSU provide enough power for my machine?
- Does the PSU have all of the connectors I require (6-pin for high end PCIe, two 6-pin, four 6-pin or even the newer 8-pin PCIe connector)?
- If using SLI or Crossfire, is the unit SLI or Crossfire certified (doesn't matter if a PSU is certified for one or the other as long as it has the correct connectors. If it passed certification for EITHER that means it's been real world tested with dual graphics cards in a worst case scenario).
Figure out if there are any variables that may affect the actual output capability of the PSU: - What temperature is the PSU rated at? Room (25° to 30°C) or actual operating temperature (40°C to 50°C)
- If room temperature, what's the derating curve? As a PSU runs hotter, it's capability to put out power is diminished. If no de-rate can be found, assume that a PSU rated at room temperature may only be able to put out around 75% of it's rated capability once installed in a PC.
After that, narrow selection down with finer details that may be more important to others than it may be to you.... - Does the unit have power factor correction?
- Is the unit efficient?
- Is the unit quiet?
- Is the unit modular?
- Am I paying extra for bling?
- Do I want bling?
Wanna talk Single vs Multi rail? Hope this helps. Out.
HAF X Nvidia-ASUS IV Formula/i7 3930K OC'd 4.7/C-M Nepton 280L/MZ-75E1T0B-AM/16G Corsair Dominator GT 2133C9/GTX1080-SLI/CM SPM2 1500W on Asus 27", 165Hz HAF XM- ASUS Maximus-V Gene/3770K/Kuhler 920/Samsung MZ-7TE1TBW, 500GB/8G Corsair Rampage 1600 XMP/GTX690/CM V1000 1000W Stryker -Wht - ASUS Rampage V Extreme USB 3.1/i7 5930K OC'd to 4.4MHz/EVGA CLC 280/ 16GB GSKILL 16G-F4-3200Q/GTX1080Ti-SLI/Samsung MZ-7TE1T0B, 500GB/EVGA 1200P2, G510 Keyboard & Nostromo/MadCatz MMO 7/Windows 10 Pro 64-bit
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ultima-krel
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Re:P67 SLI Unable to Achieve Stable Overclock
Wednesday, February 15, 2012 2:30 PM
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i have the z68 ftw but am having problems when trying to select manual voltages, whenever i choose a manual vcore and boot into windows core temp and prime 95 only pick up 1 cpu core
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PXAbstraction
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Re:P67 SLI Unable to Achieve Stable Overclock
Friday, February 17, 2012 1:00 PM
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So just thought I'd post an update here. I'm very happy to say a new power supply did indeed fix all my problems. I upgraded my Seasonic X-Seriws 560W to a 760W that I got on really good sale and everything's smooth sailing now. I've overclocked the system to 4.6Ghz and it's rock solid. I've also applied about an 8.5% boost to my video card (just on the CPU, the memory has actually gone higher than this and can keep going) and everything's working great. My OCZ Synapse has stopped randomly corrupting as well. So it would appear that I just made a critical error in judgement when building the system and I just needed more power. Thanks everyone for your help, very happy now! :)
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sotiri
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Re:P67 SLI Unable to Achieve Stable Overclock
Saturday, February 18, 2012 2:48 AM
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That's great news. Enjoy!
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lehpron
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Re:P67 SLI Unable to Achieve Stable Overclock
Saturday, February 18, 2012 3:55 AM
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sotiri
550W is the minimum recommended for GTX570 SC.
You should add at least 100W for overclocking.
I would be more comfortable with 750W. Clarification: While nVidia's site says they recommend a 550W PSU with a system running a GTX570, since they don't tell us what else is in the system, it is best not to quote that number because everyone's configuration will be different. What is quotable is the max board (reference typical) power for the GTX570 itself, at 219W ( 18.3A at 12v). Power increases linearly with frequency if voltage wasn't adjusted, so the SC model may be 19A or so. While his 2600K is stuck in the 95W TDP category and Intel rates any 95W TDP part requiring 13A continuous, reviews have shown that the stock 2600K draws 93W of electricity (<8A at 12v) for itself. If his 2600K was set to 4GHz with no voltage adjustment, then it barely draws more than 9A at 12v by ratio of frequency scaling. All in all, it is less than 32A requirement at 12v (since all drives and fans have labels that say how much 12v amps each need, it usually isn't much) which his need are less than 450W-- and you'd be comfortable if he choose 750W unit? Considering that his Seasonic 560W Xseries has a single rail at 46A, if power was his problem, I'd look at capacitor aging and quality of the unit, not the wattage. If he wanted another GTX570 for SLi, sure, then he needs a minimum of 51A and his PSU won't make it, but that's still just 600W. Recommending 750W would make sense here. Regarding CPu overclocking, since everything is "luck of the draw", one should look up the FPO/batch number of their processor and see how others have done since not all CPUs are created equal to reach the same frequencies. Processor power draw goes up exponentially with voltage adjustment approximated by: OC power = stock power x (OC multi/stock multi) x (OC voltage/stock voltage) 2 I don't know what PXAbtraction has tried with his CPU, but if his stock was 93W at 1.25v (each batch will have a different stock value) and needed 1.35v for 4.5GHz, then his power draw ends up at 143W (12A at 12). If he needed 1.45v for 5GHz, that's 184A (15A at 12v) for the CPU alone. So yes, 100W extra for CPU overclocking was a good estimation/assumption on your part, I'll give that credit to you.
post edited by lehpron - Saturday, February 18, 2012 4:00 AM
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