I did an OC on a FX-8120 to 4.7ghz with LLC on extreme. I see my core voltage shooting up to 1.56v. This is not even on a full load. Core temps sky rocket to 58c  with about a quarter load on the CPU. I was wondering, if for one my PSU is up to par with running all of my hardware? If I should be worried about these voltages and also temperatures from the CPU? On another note I have ran hardware monitor, it seems to be reading my +12v @ 10.84v while gaming. Idle my voltage sit around 11.50v. I know I shouldn't trust PSU readings from software but since I don't have a multimeter I get paranoid about it. I also tried overclocking my video cards, I raised the core clock only 20mhz higher from stock and memory just 7 mhz and I get messed up video and crashing to black screen.

System Specs:

2 HD 4850 CrossfireX

AMD FX-8120 @ 4.7ghz (Gamer Storm Heatsink)

ASUS M5A97  (0901)

PSU: Apevia 680w Beast Power

HDD Samsung 1.5tb

Running 5 120mm fans.

Apevia = Office Depot store brand = GARBAGE. Replace with a Corsair/SeaSonic/XFX/Sapphire/Enermax/PC P&C unit NOW.

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Crosshair IV Formula, Phenom II x4 965 w/ Corsair H60, 8 GiB OCZ Platinum DDR3 1600, XFX HD 7970 Ghz, 512GB Vertex 4, 256GB Vector, 240GB Agility 3, Creative X-Fi Titanium w/ Creative Gigaworks S750, SeaSonic X750, HP ZR2440w, Win 7 Ultimate x64

As black_zion stated, you NEED to swap out your PSU for something more reliable and higher in quality.

1.56v Vcore seems a bit high. From what I can see on the interwebs, for speeds under 5GHz 1.3v to 1.45 / 1.47 / ~1.5v is all is needed.

Then again, each CPU is different - but like any overclocking, if lower voltage is possible, go with it.

Personally, I don't feel safe using lower-end boards for higher overclocks. They have fewer power phase / power delivery components.

For your board right now, it uses a 4+2 phase design VS the 6+2 on ASUS's 990X chipset boards VS 8+2 on the 990FX based boards.

The higher-end boards also use higher-quality components and improved cooling solutions.

 

Overclock one part at a time. CPU then GPU or vise-versa.

 

I'm sure the 4850's can go a bit further than 20MHz/7MHz. What cards are you using? (brand & model)

When was the last time you had them dusted?

They are a couple years old now, and the warranty should be over, disassemble the cooler, clean off old thermal paste, and apply a new amount. (I did this on my 4850 last year...I got photos if you need)

Mess with one HD 4850 at a time (one in your system at a time); maybe one of your two just doesn't like being overclocked.

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Phenom II X6 1090T @ 4.1GHz // ASUS Crosshair V Formula 990FX // Sapphire Radeon HD Dual-X 7970 // Thermaltake Frio w/ push-pull (using Antec Formula 7 Nano Diamond paste!!) // 8GB (2 X 4GB) G.Skill RipJaws DDR3 1600MHz @ 8-9-8-34-21-1T // Corsair TX850 850W // Corsair Force GT 120GB SSD (OS) // Kingston 200 V+ 120GB SSD // WD Caviar Black 1TB // Windows 7 Ult x64 // Logitech X-540

Edited: 09/19/2012 at 01:45 PM by -rascal-

Guess I'll sell the laptop and go with a better PSU. I'm thinking 700w+? Seems that my chip needs 1.55+ volts to remain stable beyond 4.6ghz.

My graphics card is the generic brand, in this link.

http://www.geeks.com/details.asp?invtid=HD4850-PCIE-512-BO

I just bought them last week, the site listed they were new.

I was waiting for geeks to get some refurbished 990X boards, they were selling for $60, a week after I bought my 970 I see the 990x in stock. That really upset me because I paid $50 for a refurbished 970.

I do my fair share of overclocking on lower end boards, I got a dead Foxconn and a Biostar. I never learn, that's why I'm here.

My core temp reaches 60c, 4.5ghz/1.48v core at full load. Would that be safe to run 24/7 for rendering? After I get a new PSU.

 

I'd seriously consider reading the STICKY at the top of the forum about Core Temp vs CPU Temp.

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AM3 965BE / Corsair H70 / 4Gb Corsair XMS3 2000Mhz / GigaByte 990FXA-UD5 / Corsair Force3 90Gb / x2 HD3870 Atomic Edition / x4 1Tb Storage & Momentus XT 250Gb / Sony AD-7700 DVD-RW / Auzen X-Mystique / Enermax INFINITI 650W / Lian-Li PC-7FNWB / Logitech X-530 / Logitech KBoard & MX620 / Logitech C525 / Epson RX685 / DELL U2312HM

With that system you don't need a 700W+ PSU. In fact, a good quality 550W-650W is plenty.

The Apevia 680W that you bought can't even output what a true 680W PSU can.

Since you bought things from Geeks.com, I'll use them as reference. Wait...my dear gawd...90% of their PSUs are the junk sweatshop made ones...

Antec EarthWatts 650W. http://www.geeks.com/details.asp?invtid=EA650GREEN-DT&cat=PWR

Now have a look at NewEgg...

SeaSonic S12II 620W. http://www.newegg.com/Product/Product.aspx?Item=N82E16817151096

http://www.newegg.com/Product/Product.aspx?Item=N82E16817371044

http://www.newegg.com/Product/Product.aspx?Item=N82E16817371030

http://www.newegg.com/Product/Product.aspx?Item=N82E16817139020

http://www.newegg.com/Product/Product.aspx?Item=N82E16817207013

No way those cards are brand new. The HD 4850 / 4870 was released back in mid 2008.

Those HD 4850's are either refurbished or...somehow been sitting in a corner of the storage room for that long.

They've even been moved into the "Legacy" product bunch with AMD.

Nonetheless, the HD 4850's are still capable of doing heavy damage. My Sapphire HD 4850 uses the exact same "Reference" / Stock Cooler.

Oh yeah, these cards with the reference cooler tend to run hot, but that's normal. The HD 4800 series were known to run hot and can withstand high temps...but try to keep them on the cooler side if possible.

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Phenom II X6 1090T @ 4.1GHz // ASUS Crosshair V Formula 990FX // Sapphire Radeon HD Dual-X 7970 // Thermaltake Frio w/ push-pull (using Antec Formula 7 Nano Diamond paste!!) // 8GB (2 X 4GB) G.Skill RipJaws DDR3 1600MHz @ 8-9-8-34-21-1T // Corsair TX850 850W // Corsair Force GT 120GB SSD (OS) // Kingston 200 V+ 120GB SSD // WD Caviar Black 1TB // Windows 7 Ult x64 // Logitech X-540

Edited: 09/20/2012 at 12:52 AM by -rascal-

Will do.

I believe the cards were just sitting. But I had a friend who ordered the 3870x2 and he said it looked refurbished so who knows? My power supply I ordered from newegg. It had pretty good reviews. I bought it for my old computer which didn't really require much power. So I wasn't concerned about it until I got the FX-8120 and 4850's.

I have the video cards with their fans on 100%. But my computer is blowing out so much hot air it feels like a heater is on. I only bought the video cards to see if they offered any performance over my HD 4890.

I'll probably purchase that Earthwatts EA-650 power supply. However I was deciding if I should get another HD 4890 on ebay, could this PSU run HD 4890 in crossfire?

4890's are power hungery cards so I would look for something in the 750W range it might be a little more than you need but its good to have some headroom.

But what I'm asking is why waste money on another 4800 series card? I'm sure you can find a good 5870 or even 5850 on ebay.

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PhenomII 1100T// Asus Sabertooth R2.0 // 2X HD5850 CF //8Gb of 1866Mhz ram, H50 cooling, HX850W psu all stuffed into a NZXT Phantom case.


Was a member of AMD Processer forum since 2008. Last post count 1818.