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PCI-e frequency OC

post #1 of 7
Thread Starter 
Hello I have a question. I have a pretty crappy G31M motherboard so in order to OC I have to OC my PCI-e frequency as well. I would have to go as far as 121 to keep the clock that I need (actually have to set the frequency to AUTO but according to Setfsb 121 is my frequency and I'm fairly certain its correct). Ofc when I try to lock it at 100 can't boot.
Weird thing is even if I manually set it to the 121 value it won't boot, I have to keep it at AUTO for some reason, this is kinda odd but nothing I can do about this.

Now I heard a lot of horror stories about computers going up in flames at 105 (exaggerating ofc), but a lot of these stories come from a third person as in "I've HEARD people frying their stuff" and very rarely somebody had their own experience.
Also some people report that they can't even boot at higher frequencies, but after lowering them again everything is fine.
On the other hand I've also heard people going for months on 120 pcie without any problems.

So my question is, does anybody have PERSONAL experience with overclocking the pcie bus this far and something going terribly wrong?

And I'm thankful to all the people saying "Don't mess with PCI-e, just lower the OC", I'm well aware that it iss kinda dangerous, I would just like to know how much are we are talking about.
post #2 of 7
With that motherboard, I wouldn't trust it for any kind of overclocking on that level. It's just not designed to handle it very well (at all).
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
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250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #3 of 7
Thread Starter 
Well the system is quite stable actually running a E8400 @ 3.6ghz. Had to push FSB to 400 to do that. I'm particular worried graphic card safety. It wouldn't be a big deal if my motherboard or CPU get fried eventually, they are all pretty old, just worried about new graphic card getting damaged.
post #4 of 7
Quote:
Originally Posted by Meas View Post

Well the system is quite stable actually running a E8400 @ 3.6ghz. Had to push FSB to 400 to do that. I'm particular worried graphic card safety. It wouldn't be a big deal if my motherboard or CPU get fried eventually, they are all pretty old, just worried about new graphic card getting damaged.

I remember some of the experts on here talking about that...

However, the PSU plays a big role too, so what's the make and model of yours?
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
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post #5 of 7
Thread Starter 
Its a fairly decent Chieftec 500w PSU. Its an east European brand so people badly when I mention it "didnt heard of that brand > must be bad". I'd probably act the same way, but hey, can't find anything better here where I live, also paid 60$ for it. The OEM is CWT so it should be pretty safe I suppose.
But anyway, I'm really curious to know the connection between PCI-e frequency, potential damage to GPU and the PSU,
post #6 of 7
The PSU experts on here seem to all agree with each other that Chieftec PSUs aren't very good. Personally, I was just looking to see if it was an obvious junker and therefor an obstacle. Although, I haven't heard anything good about any Chieftec PSU, so I don't know.

Anyway, I'm kind of in the same boat as you where I have only heard that setting the PCI-E frequency this high is dangerous and I've never seen any first-hand accounts. However, overclocking on a motherboard like yours was also frowned upon due to the limitations and frustrations involved in trying to do it. So, I would say that it's not worth the time or effort, but that's me.
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
It's a computer!
(19 items)
 
  
CPUMotherboardGraphicsRAM
i5-2500K @ 4.5GHz (1.400-1.424V in Manual Mode) ASUS P8P67 EVO B3 (UEFI ver. 1850) GTX 780 ASUS DirectCU II (1228 / 6300, 1.180V) G.SKILL Ripjaws X 8GB (2 x 4GB) 1866MHz, CL9 
Hard DriveHard DriveHard DriveOptical Drive
250 GB Samsung 840 EVO (C:) 250 GB Samsung 840 EVO (D:) 150 GB WD VelociRaptor Samsung SH-S243N 24x DVD Burner 
Optical DriveCoolingOSMonitor
Samsung SH-S203N 20X DVD Burner Thermaltake Frio Win 7 Home Premium x64 SP1 Retail AOC G2460PG 
KeyboardPowerCaseMouse
Filco Majestouch 104-key Cherry MX Blues w/NKRO Corsair HX650 (Bronze, ordered on 12-12-2009) CM 690 Intellimouse Optical (1.1A) 1000Hz polling rate 
Mouse PadAudioAudio
Basic, but premium round X-Fi Titanium HD Klipsch ProMedia 2.1 (with 16 AWG Monster Cable... 
  hide details  
Reply
post #7 of 7
Thread Starter 
I think I got some lucky specimen from both the PSU and motherboard. I had no issues overclocking my old e5300 to 3.6ghz, then i sold it and got e8400 by adding about 10$ more to the money I got from e5300. Little did I know I'd have to raise the PCI-e frequency. I read before that the wall of G31M motherboard is about 425 mhz, but I didn't plan to OC too much since I have a stock cooler.

But my point is that I never had any instabilities, never even had to increase the voltages on this board. I'm basically just worried about frying my GPU by running at 121 PCI-e frequency.

And when it comes to the power supply, its also pretty decent imo. It has way more amps on the 12V than I'll ever need on this rig, plus it never gets even remotely hot, even when I do 12h stress tests on GPU or CPU.

The only instability that I've even run into was that if I OC to 3.6ghz, Windows has issues with waking up from sleep, which is pretty normal and happens very often as far as I've read on the OC forums.

And when it comes to time and effort, my E8400 bottlenecks my 7770 hard. It will just get worse once I get 7850 in a couple of days, so I really have to push it as far as I can to get most out of this Frankenstein rig.
Edited by Meas - 8/7/13 at 4:39pm
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