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AMD Phenon II X3 740 Black Edition

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September 3, 2010 10:28:38 PM

Hi all, I just bought a AMD Phenon II X3 740 Black Edition CPU. I was wondering since AMD's site hasn't got really any info on this cpu that someone might know what the max voltage is on this bad boy? I also am trying to overclock this cpu but cant get it to run stable, this is following the "guide" on AMD BLACK EDITION OVERCLOCK GUIDE supplied on tomshardware. Anyone help? Also, what is VDDNB over voltage mean in my bios? I have a Asus M4A77TD.

Thanks,

Adam
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September 3, 2010 10:58:13 PM

Max voltage isnt terribly important, as you likely wont be setting it to that without LN2. What you want to know is max safe voltage, but that depends on mobo, psu, and cooling system. Do you already have the CPU? If not, when it arrives, just look at CPU-Z/Overdrive. If you do, well do the same thing :lol:  What is the multiplier and bus? What is the voltage you have it at now? VDDNB is i believe north bridge voltage, but ive only ever heard of problems with it on Asus motherboards, and I have MSI, so ill have to look into that one for you.
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September 3, 2010 11:08:53 PM

yeah, I'm running it now. I cant run it overclocked as to the article about the blck edition overclocking on this site. But running stock seetings on auto the multiplier is at 15 @ 1.280v, 3013.52 mhz, HT freq 200.9 mhz, bus speed 200.9 mhz, NB freq 2009.1.
I have a 110 mm Zalman 9700 cpu fan with heat pipes with 5 case fans (Full Tower).
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September 3, 2010 11:10:02 PM

oh also have the wrong mem PC12800 but its running the timings fine DDR3 1600 Gskill rip jaws 7-8-7-24
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September 3, 2010 11:12:21 PM

Try taking the bus up to 210 MHz, and the multiplier to 16. If you have left the voltage at stock, it shouldnt take really any additonal voltage.
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September 3, 2010 11:13:07 PM

Oh, my MOBO is an ASUS M4A77TD
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September 3, 2010 11:14:36 PM

ok, I will try it. I have had it up to 17.50x on the multiplier already, ran fine but when stressed tested it failed and shutdown
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September 3, 2010 11:15:43 PM

I will be back, gonna try those settings and see what happens.
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September 3, 2010 11:27:35 PM

I did that and on prime95 main thread, worker#1 only two testing, worker 2 and 3 failed??
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September 3, 2010 11:29:18 PM

Do you have AMD Overdrive? And that doesnt seem possible, if thermal paste is applied right. Try lowering VDDNB to default, and if it is at default, lower it until it becomes stable.
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September 3, 2010 11:33:39 PM

yeah, I have it. I tried using it with my memory clocked at 1600mhz @ 7-8-7-24 and it shutsdown too. I will try it again. As for the VDDNB it's all on Auto on my motherboard. the only things that I have done is set the mem, put the bus at 210 and multiplier @16x. it did that every time I overclocked yesterday. Should I return the chip back to newegg?
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September 3, 2010 11:35:48 PM

Chip doesnt seem to be as much of a problem as motherboard here. And the memory should be show up as 666 MHz, as it is DDR3, and AMD systems dont do stock 1600 MHz i believe, you have to OC to get there.
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September 3, 2010 11:41:39 PM

ok, I dropped the Dram voltage in amd overdrive from 1.590 to 1.560 and its running a stability test right now. I manually set the ram at 1600 and when I brought the Bus up to 210 it put me at 1680 instead of 1600. Should I drop to 1333 @ 8-8-8-24 timings?
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September 3, 2010 11:46:01 PM

Well, what it should come up as is 800 MHz or 666 MHz, and then you multiply by 2 since its DDR3. Is that not happening for you? Might just be a different way of showing it on the mobo, but yeah, down to 1333 MHz, nobody cares about the timings in this :lol: 
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September 3, 2010 11:51:15 PM

well on cpuz it says when i check under memory my Dram frequency is 840 MHZ, but it only jumped that high when I upped the Bus from 200 to 210. when you go into memory on the mobo it starts at 800 and goes to 1600 is that what you mean?
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September 3, 2010 11:55:37 PM

Oh ok, just making sure. Well id lower it to 666 MHz, which would be 700ish factoring in bus speed. Try using AMD overdrive to stress test the system. What kind of temps are you getting?
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September 3, 2010 11:58:34 PM

Hardware Monitoring : ITE IT8712F
Voltage CPU : 1.35 V
+3.3V Voltage : 3.36 V
+5V Voltage : 5.99 V
+12V Voltage : 12.61 V
Chassis Fan : 2766 rpm
Processor Temperature : 78.8 °F
Mainboard Temperature : 132.8 °F
:
Processor AMD Phenom II X3 740 : Sensor DTS
Core 1 : 163 °F
Core 2 : 163 °F
Core 3 : 162.7 °F
Energy Power : 93.60 W
:
ATI Radeon HD 4600 Series : ATI Catalyst Driver
Temperature : 93.2 °F
Temperature (Diode) : 93.2 °F
Fan : 50.0%
:
Hard Disk Monitoring : S.M.A.R.T
Hard Disk WDC WD5001AALS-00L3B2 : 84.2 °F
Hard Disk HDS728040PLAT20 : 87.8 °F
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September 3, 2010 11:59:44 PM

isn't the x3 740 just the x4 940 with one core locked (for various reasons)? so the specs should be identical
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September 4, 2010 12:01:46 AM

Sigh...farenheit. :ouch:  WHAT PSU DO YOU HAVE?! Those voltages are WAYYYY out of spec, like insanely out of spec, i wouldnt be surprised if you PSU started letting out some magical blue smoke soon! :o  Volatage are supposed to be within 5% tops, the 5 volt is over by 20%!!!!!
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September 4, 2010 12:03:06 AM

ct1615 said:
isn't the x3 740 just the x4 940 with one core locked (for various reasons)? so the specs should be identical


Id imagine it is a 945 with 1 core locked, but it might be the 940.
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September 4, 2010 12:09:19 AM

Hardware Monitoring : ITE IT8712F
Voltage CPU : 1.35 V
+3.3V Voltage : 3.36 V
+5V Voltage : 5.99 V
+12V Voltage : 12.61 V
Chassis Fan : 675000 rpm
Processor Temperature : 25 °C
Mainboard Temperature : 49 °C
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Processor AMD Phenom II X3 740 : Sensor DTS
Core 1 : 46.6 °C
Core 2 : 46.6 °C
Core 3 : 46.6 °C
Energy Power : 93.60 W
:
ATI Radeon HD 4600 Series : ATI Catalyst Driver
Temperature : 34 °C
Temperature (Diode) : 34 °C
Fan : 50.0%
:
Hard Disk Monitoring : S.M.A.R.T
Hard Disk WDC WD5001AALS-00L3B2 : 29 °C
Hard Disk HDS728040PLAT20 : 30 °C
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September 4, 2010 12:09:28 AM

The PSU could very well be the problem here. It is overvolting like crazy, WAY beyond what it should be doing. If it was 5.09 on the 5 volt, even thats not terribly good, but i can understand. BUT 5.99!!! Thats insane!!!!
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September 4, 2010 12:11:54 AM

so what should I do? I have had it for a 9-10 months now?
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September 4, 2010 12:19:29 AM

Really? What CPU did you have in there before it? Even though it IS listed as a 700 watt, its rails only put out 18 amps, where as an Antec 550 watts puts out 20 amps on each of its 4 rails, so you get the idea :lol:  . Although with a system like that, i dont see it being overloaded in power consumption. Do you happen to have an extra PSU to try in there?
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September 4, 2010 12:28:09 AM

I had the Phenom II X3 710, I unlocked it to 4 cores. I dont have another psu.
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September 4, 2010 12:31:25 AM

well, the box says OCZ comes with a 3 year Power Swap Warranty. Guess I could go that route?
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September 4, 2010 12:45:58 AM

Yeah, just blow it up and return it :whistle:  But that really might be the case. Even if it isnt the problem, it DEFINITELY is a problem!!
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September 4, 2010 2:10:19 AM

Best answer selected by Ahumphers91.
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September 4, 2010 8:19:04 AM

This topic has been closed by Mousemonkey
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