So, I'm trying my first CPU OC ever with an i5 4670K. After reading tons of guides and stuff, I'm confused with two thing. I'm planning on OCing only the CPU and leave the memory on its 1600mhz XMP default. So, do I need to mess with VCCIN and System Agent Voltage? From what I read, System Agent is for memory and many guides didn't even mentioned VCCIN, some said to raise to 1.9v.
OC Noob - Help with voltages
- Thread starter josysclei
- Start date
Solution
josysclei :
chris987 :
josysclei :
http://www.tomshardware.com/answers/id-2071207/cpu-safe.html#xtor=EPR-8809
i have read and i dindt see any 1.9v mentioned anywhere.you have obviously misread!
Just to be clear, I'm talking about VCCIN(Vrin) not Vcore, I know 1.9v would probably frie your chip right away.
anyway, vccin(vrin) depending on vendor, supposedly increasing statility but better star with the basics and try to determine your cpu o/c ability first. if you find a comfortable o/c spot then proceed on further investigation and experimenting!voltages are ment to deal with respect or you will get with a fryed pc.
chris987
Judicious
- Jun 10, 2013
- 4,467
- 0
- 33,760
Fist of all you must have an aftermarket cooler and a reliable and capable psu.whatever you do, always constantly monitor your temps using core temp , real temp or cpu hw monitor. all cpu are different so all o/c ability is different too.also depends on the mobo.
about the 1.9v is this kind of a joke?whre did you read that?
well by just increasing the multiplayer (which all intel cpu's are meant to). dont mess with the bclk leave it to 100 x multiplier = ghz . this way memory wont be o/ced. first off all use manual voltage and leave it at default. increase the multiplier by 1 and try 4.ghz run prime 95 for at least half an hour.if it is stable then increase further the multiplier and run prime 95 again. this way you will determine the cpu limit with stock voltage. when you get an error or restart or something on prime 95 then increase voltage by 0.005v till you stabilize it.depending on cooler you can achieve 4.3-4.4ghz or even higher. try not to pass 1.3v cause things get really nasty with the temps.better try not to pass 75c if you are aiming for a 24/7 use. also when o/c cause you overvolt the mobo vrm's (voltage regulator modules) you must have good tower ventilation and air flow.
about the 1.9v is this kind of a joke?whre did you read that?
well by just increasing the multiplayer (which all intel cpu's are meant to). dont mess with the bclk leave it to 100 x multiplier = ghz . this way memory wont be o/ced. first off all use manual voltage and leave it at default. increase the multiplier by 1 and try 4.ghz run prime 95 for at least half an hour.if it is stable then increase further the multiplier and run prime 95 again. this way you will determine the cpu limit with stock voltage. when you get an error or restart or something on prime 95 then increase voltage by 0.005v till you stabilize it.depending on cooler you can achieve 4.3-4.4ghz or even higher. try not to pass 1.3v cause things get really nasty with the temps.better try not to pass 75c if you are aiming for a 24/7 use. also when o/c cause you overvolt the mobo vrm's (voltage regulator modules) you must have good tower ventilation and air flow.
chris987 :
josysclei :
http://www.tomshardware.com/answers/id-2071207/cpu-safe.html#xtor=EPR-8809
i have read and i dindt see any 1.9v mentioned anywhere.you have obviously misread!
Just to be clear, I'm talking about VCCIN(Vrin) not Vcore, I know 1.9v would probably frie your chip right away.
chris987
Judicious
- Jun 10, 2013
- 4,467
- 0
- 33,760
josysclei :
chris987 :
josysclei :
http://www.tomshardware.com/answers/id-2071207/cpu-safe.html#xtor=EPR-8809
i have read and i dindt see any 1.9v mentioned anywhere.you have obviously misread!
Just to be clear, I'm talking about VCCIN(Vrin) not Vcore, I know 1.9v would probably frie your chip right away.
anyway, vccin(vrin) depending on vendor, supposedly increasing statility but better star with the basics and try to determine your cpu o/c ability first. if you find a comfortable o/c spot then proceed on further investigation and experimenting!voltages are ment to deal with respect or you will get with a fryed pc.
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