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Overvolting on Athlon II

post #1 of 18
Thread Starter 
Athlon Ii x3 450 3.2ghz 'Rana' here, unlocked to x4.

I know this is a really nub question, and it's not really a question more so just to see what people have done out there - but - how does overvolting affect your overclock? What kind of overclocks do you have/heard of with each voltage? What are the impacts of raising voltage, how much is minor overvolt and how much is a major overvolt?

i want to avoid any major overvolting, but I do have 7xfans, a controller, and a Hyper 212, so a minor overvolt is okay for me. Currently I have lowered my CPU VID to 1.35, then added a CPU Offset of +2v, so Bios says 1.502 and CPU-Z says 1.488. From what I understand 1.55 is where it gets high, but what is considered minor? What kind of drawbacks can you expect with a voltage of 1.5, or minor, or whatever.

Thanks, just interested to see where others are. The Athlon X3 club is kind of outdated now ;/
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post #2 of 18
1.55 is max safe.
Also I'm hoping you have something other than the stock cooler on there.
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post #3 of 18
Just keep voltage under 1.55v, and temps under 65c (or 62c, not sure).

Then you should be fine.
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post #4 of 18
Thread Starter 
I have a Hyper 212 Plus with push/pull dual YL Mediums from petras, and 4 more case fans 120 mm. Also have a 40mm fan ghetto mounted with wire onto my Northbridge. You can see in this thread:
http://www.overclock.net/amd-general...splayed-2.html

That I am unable to correctly view my temps (all programs say same thing, below ambient, and while bios may show correct temp no program shows the same temp bios usually ranges around).

Now, due to me being unable to monitor temps at all, it's possible i'm overheating my system. But, I notice that these temps, that are probably horribly off, are still below my max load temps I got with stock cooler on stock settings. So I seriously doubt my overclocked system, at 1.5v right now (stability testing as we speak, hopefully i wont crash making this post lol) with an extra 500 mhz is really running at 10*C in a 65*F room (a bit chillly, let windows open when I went to work to run p95), I think that stability is a bigger issue for me right now than temperatures.

However, I'm entirely game for going past 1.55 volts if it's 'safe'. See, as you can see in my PC name, i don't really have much money, but love to make money work for me. i really want this CPU to last, oh i dunno, 5 years guaranteed no issues, so I don't want to unnecessarily limit it's life. With that said, I am faintly aware that CPU's are like military hardware, and are usually tough enough to last for 10+ years, so that's the appeal in overclocking and 'damaging' them as halving their life just means 5 years. So I'm not really sure what i "want" to do, but I generally don't want to hurt my CPU too much.

i'm aware heat hurts a lot, voltage hurts somewhat, and frequency not that much - meaning I probably want to get as much frequency as I want, voltage is something ambiguous, and heat is a huge no-no.

I have a NZXT sentry 2 with temp sensors in the mail, so I will unmount my CPU and slip it between the pins so I can get an accurate reading. But oh, lets just say im impatient. I see that my incorrect temps are below what they were, so I think I'm safe to proceed.

ps it may not matter anyways, i dont think overvolting past 1.504 right now will lead to much bigger gains anyways. a .125 increase wont let me get an extra 100 mhz right now.
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post #5 of 18
Updating the BIOS might help with the temps.
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post #6 of 18
Unlocking cores disables core temp monitoring, but the motherboard socket temp should work
Dunno
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post #7 of 18
Thread Starter 
Quote:
Updating the BIOS might help with the temps.
That's kind of insulting to say, I know I'm nub but damn ><

Quote:
Unlocking cores disables core temp monitoring, but the motherboard socket temp should work
Just take my word (or read the thread I posted) that the temps are the exact same (ie below ambient) when I am at stock settings or with ACC off. As for socket temp and motherboard temp, they both dip below ambient (reported lows of 18*C is wrong clearly in a 'warm enough' room). Only temp that doesn't dip below ambient is northbridge, a low of about 26*C. Anything below 71*F/22*C is 'cold' usually.
Edited by Belial - 3/6/11 at 3:25am
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post #8 of 18
Thread Starter 
So what I don't really understand, is how voltage comes in to the equation. I sort of understand more voltage, more overclock/stability - so do crazy phase cooling/liquid nitrogen/dry ice setups just run like crazy high voltages and get good overclocks and keep temps low? Because I thought there's a certain 'maximum' limit to how much voltage a chip can take - I mean I can't see it being even theoretically possible you could put a nuclear reactor to an athlon ii so long as you kept it cold, right? Anyways, heat isn't an issue, but I hear over 1.55 is 'unsafe' and I'm already at 1.5, and I absolutely do not want to damage this processor. I understand CPU's are 'tanks', so halving the life just means it only lives to a huge 5 years instead of 10, so I understand I have room to play, but at the same time I want to take care of my system, ya feel? Anyways, I may try a bit more voltage, see where that gets me, but I'm pretty sure 1.5v is about as much as I go as far as big gains per volting.

so just a quick try of bios=1.6volt // cpu-z and hwmonitor = 1.58volt, temps are still very low, lower than stock cooling on stock settings. 3.81 ghz, something impossible without the extra .08 voltage. gonna try cinebench, see where temps go.

edit: crashed on cinebench lol. so clearly 1.58 voltage doesnt net much gain, couldnt do 113mhz increase for an increase of .076v
Edited by Belial - 3/6/11 at 4:19am
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post #9 of 18
Thread Starter 
Basically, why is 1.55vcore the highest to go on air cooling? I mean if I can keep it cool why can't I go higher? On the other hand, it sounds ridiculous to go to, say, 2.0 vcore on liquid nitrogen right?
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Sanyo DP19640 18.5" 768p KDS Rad-7xp 1024p CM Storm Quickfire Rapids Brown Rosewill Capstone 750 
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Colonial Blue Paracord Sleeving 
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Phenom ii X4 955C2, $31, 5 broken pins, works! ... Biostar A770e3 6.3 Red&Black MSI GTX 460 768mb Twin Frozr II 2 x 2GB Kingston HyperX 1333 OC to 1348CL7@1.65v 
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Intel X25-M G2 80GB SSD NH-D14 SE2011 6 x Case Fans (4 x YL-M, NZXT case fan, CM Hype... Jerryrigged Chipset-Northbridge 80mm HSF 
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Jerryrigged VRM Heatsink (sawed off stock AM2 h... Hax'd W7 Ultimate 64bit Sanyo DP19640 19"1360x768 Ducky Cherry Browns 10keyless 
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post #10 of 18
Thread Starter 
So why is 1.55 the max safe? At 1.55v my temps are actually a little lower than my temp readings on stock x3 and stock with x4 with stock cooling. I should be able to hit 1.6, maybe more, and still be under safe temps?

Of course theres still that whole issue of I'm unable to read what my temps are at all, but the fact that all my incorrect? temps are below stock (and they do show a rise and fall and spike with cpu usage/p95) should show that it's operating in safe temps at least.

But yea just wondering WHY 1.55 is the most. I've also read a ton of guides saying each processor voltage max is different, but I don't know what exactly determines what is too far. How are crazy 6ghz+ phase cooling overclocks done in regards to volting?
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Colonial Blue Paracord Sleeving 
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Phenom ii X4 955C2, $31, 5 broken pins, works! ... Biostar A770e3 6.3 Red&Black MSI GTX 460 768mb Twin Frozr II 2 x 2GB Kingston HyperX 1333 OC to 1348CL7@1.65v 
Hard DriveCoolingCoolingCooling
Intel X25-M G2 80GB SSD NH-D14 SE2011 6 x Case Fans (4 x YL-M, NZXT case fan, CM Hype... Jerryrigged Chipset-Northbridge 80mm HSF 
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Jerryrigged VRM Heatsink (sawed off stock AM2 h... Hax'd W7 Ultimate 64bit Sanyo DP19640 19"1360x768 Ducky Cherry Browns 10keyless 
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Hard DriveCoolingOSMonitor
Samsung 830 128gb Corsair H110 w/4x 140mm Yate Loon High Blues W7 x64 Ultimate Yarrgh Matey Dell U2312HM Matte IPS 1080p 
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Sanyo DP19640 18.5" 768p KDS Rad-7xp 1024p CM Storm Quickfire Rapids Brown Rosewill Capstone 750 
CaseMouseMouse PadAudio
Bitfenix Shinobi Modded CM Storm Spawn Steelseries Diablo 3 2 set CD Speaker + Big Sub 
Other
Bitfenix Recon Fan Controller Moded 
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Delidded i7-3770K 5GHz@1.499 Gigabyte Z77X-UD5H 1.1 Sapphire Dual-X 7950 3L Boost 4x2GB Mushkin Ridgeback 2200mhz 8/11/8/27 1.75v... 
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Intel X25-M 80GB SSD NH-D14 SE2011 Noctua 120/140/140 Fans 3 x Yate Loon Mediums (Petras) 2 x NZXT Havik 140mm Fans 
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Hax'd W7 Ultimate 64-bit Sanyo DP19640 19'' KDS Radius Rad-7xp 17'' Ducky 1087 MX Brown 10keyless 
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Rosewill Capstone 550w Modular NZXT Source 210 w/Modded Window Razer Deathadder 3.5G Steelseries Blizzcon D3 
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Phillips FW-C250 2 Speaker Set w/3 CD Changer JBL Sub 6 Subwoofer NZXT Sleeved LED Strip 1m Blue NZXT Sentry 2 Fan Controller 
Other
Colonial Blue Paracord Sleeving 
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Phenom ii X4 955C2, $31, 5 broken pins, works! ... Biostar A770e3 6.3 Red&Black MSI GTX 460 768mb Twin Frozr II 2 x 2GB Kingston HyperX 1333 OC to 1348CL7@1.65v 
Hard DriveCoolingCoolingCooling
Intel X25-M G2 80GB SSD NH-D14 SE2011 6 x Case Fans (4 x YL-M, NZXT case fan, CM Hype... Jerryrigged Chipset-Northbridge 80mm HSF 
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