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Athlon II 240 at 1.505V Safe?

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February 9, 2010 4:09:56 AM

Hey, i'm trying to overclock my Athlon II 240, I'm at about 3.7Ghz but to have this my Vcore is at 1.505. Is this safe? My Core temp is 53* C Running Prime95.

More about : athlon 240 505v safe

a b à CPUs
February 9, 2010 5:12:49 AM

Pretty sure AMD said the voltage range was 0.85-1.425V. Reviewers OC it to around 1.5v and get low temps and some say its ok for 24/7 use. 53c is pretty good for those volts but you should probably get more than 3.7 with that much. If you can get 3.6 with a lot less I'd just go with that to be more efficient.
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a b à CPUs
February 9, 2010 5:56:38 AM

What is the lowest voltage that it is stable at? Typically when you find a stable clockspeed, I try to get my votlage as low as possible to reduce power consumption and heat.

As Raidur said, it should be ok, but it's always good to shoot for a lower voltage.
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February 9, 2010 6:11:34 AM

Even at 1.5 it isn't 100% stable it blue screens after about an hour of prime95. I might just drop down to 3.6 it was stable at 1.8 or so. No sure what else might be stopping me from getting a better overclock out of my board.




My MB
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
RAM
2x, not the 3x http://www.newegg.com/Product/Product.aspx?Item=N82E168... (not sure if this is why; intel memory)
2x http://www.newegg.com/Product/Product.aspx?Item=N82E168...

CPU-ID Validation Info
CPU Arch : 1 CPU - 2 Cores - 2 Threads
CPU PSN : AMD Athlon II X2 240 Processor
CPU EXT : MMX(+), 3DNow!(+), SSE (1, 2, 3, 4A), x86-64, AMD-V
CPUID : F.6.2 / Extended : 10.6
CPU Cache : L1 : 2 x 64 / 2 x 64 KB - L2 : 2 x 1024 KB
Core : Regor (45 nm) / Stepping : DA-C2
Freq : 3699.95 MHz (264.28 * 14)
MB Brand : MSI
MB Model : NF750-G55 (MS-7578)
NB : NVIDIA nForce 750a SLI SPP rev A2
SB : NVIDIA nForce 750a SLI MCP rev A2
GPU Type : NVIDIA nForce 750a SLI
DirectX Version : 11.0
RAM : 4096 MB DDR3 Dual Channel
RAM Speed : 528.6 MHz (1:2) @ 9-9-9-15
Slot 1 : 1024MB (10700)
Slot 1 Manufacturer : OCZ
Slot 2 : 1024MB (10700)
Slot 2 Manufacturer : OCZ
Slot 3 : 1024MB (8500)
Slot 3 Manufacturer : OCZ
Slot 4 : 1024MB (8500)
Slot 4 Manufacturer : OCZ

As you can see, I under clocked my RAM speed, and also my HT Link is at 1945, so it shouldn't be hurtting me either. Can't figure out what's stopping me before i even get to 3.8. Also for some reason my good memory is getting set to 8500 instead of it's actual speed but i can't figure out how to fix that is my bios
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a c 83 à CPUs
a b K Overclocking
February 9, 2010 7:42:06 AM

Not entirely sure what you mean by your good memory is getting set to 8500, but all memory installed in a system must run at the same speed. Faster memory will be downclocked to run at the same speed as the slower memory.
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February 9, 2010 6:51:48 PM

The 2 memory sticks running at 8500 are 10666 MHz Rated. They are actually much better than the ones that are at the specified 10666. Looked in bios to make sure that the ram defaulting to 8500 MHz to force to 1333 but I can't see to find it. :-(
The ones defaulting to 8500 are actually these chips
http://www.newegg.com/Product/Product.aspx?Item=N82E168...
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a c 83 à CPUs
a b K Overclocking
February 9, 2010 7:24:38 PM

ZeratulMW said:
The 2 memory sticks running at 8500 are 10666 MHz Rated. They are actually much better than the ones that are at the specified 10666. Looked in bios to make sure that the ram defaulting to 8500 MHz to force to 1333 but I can't see to find it. :-(
The ones defaulting to 8500 are actually these chips
http://www.newegg.com/Product/Product.aspx?Item=N82E168...


As I already mentioned all system memory must run at the same speed. If your running 2 sticks of DDR3 1333 with 2 sticks of DDR3 1066 than all 4 sticks will be forced to run at DDR3 1066. If you manage to force all 4 sticks to run at 1333, than it's likely the slower memory not rated for that speed won't be stable and cause your system to crash.
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a b à CPUs
February 9, 2010 7:31:51 PM

1.5v for a 45nm CPU?!?
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February 9, 2010 7:41:28 PM

loneninja said:
As I already mentioned all system memory must run at the same speed. If your running 2 sticks of DDR3 1333 with 2 sticks of DDR3 1066 than all 4 sticks will be forced to run at DDR3 1066. If you manage to force all 4 sticks to run at 1333, than it's likely the slower memory not rated for that speed won't be stable and cause your system to crash.



Both are 1333 Memory Modules. I was referring to two getting set to 1066 or 8500 MHz and the other two getting set to 1333 or 10666. So but because my two best 1333 sticks are defaulting to 1066 it is slowing down all 4. Check the links to my memory to see what I mean about it incorrectly setting my memory to lower speeds. It has what the sticks are rated at more clearly on those newegg sites.
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February 9, 2010 7:43:08 PM

apache_lives said:
1.5v for a 45nm CPU?!?


Yes, 1.505v on a 45nm CPU. It's rated .85-1.425 but I see many people overclocking to volts up to 1.56v. Was thinking this will decrease my life a little but my main concern is frying this CPU in less than 3 years. As long as it lasts 3 years I'm happy.
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March 10, 2010 4:16:46 PM

1,5 is something try going to 1,47 and prime it!
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