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Best CPU cooler for €100 / under €100?

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Comments

  • Closed Accounts Posts: 37 Brian OH 99


    I'm OCing my CPU now to check if that'll give my FPS a boost. Yeah it's plugged into the Motherboard and it was set on default to be fast always. I'll change it to auto now if I can. Those temps are on my GPU too, not the CPU.


  • Closed Accounts Posts: 37 Brian OH 99


    I think I won the silicon lottery big time :D
    http://www.boards.ie/vbulletin/showthread.php?p=87589446#post87589446


    4.7GHZ on 1.176v with 58*C --- More info there :D


  • Registered Users, Registered Users 2 Posts: 10,299 ✭✭✭✭BloodBath


    That's great. Is it stable? How long did you run the benchmark for?

    Your actual vcore is around 1.2v, it was as high as 2.16. Your temps were pushing 61c as well on some cores but it's still a great result assuming it's stable. You should be trying to get your voltage setting in windows to match your bios setting. I think the load line calibration deals with this.


  • Closed Accounts Posts: 37 Brian OH 99


    I ran it overnight for 7 hours 7 mins. I thought the voltage under the motherboard was the motherboard+its other cables voltage and then the one under CPU (1.176v) was the CPU's max voltage...how could I get them to match? Enable of disable that LLC thing?


  • Registered Users, Registered Users 2 Posts: 878 ✭✭✭Luck100


    Vcore is the actual voltage going in to your chip. VID is the voltage 'requested' by your chip, based on the current workload. I.e., at idle VID will be low and under load it will pop up to a higher value. At stock, your Vcore should be close to VID at idle and will "droop" below VID at full load. That's perfectly normal. Setting LLC to more aggressive levels will get the Vcore to track VID more tightly.

    When you overclock and set the offset voltage, the offset only affects Vcore (not VID). So they won't match, but that's on purpose. If you set offset of 0.01V, that should push Vcore up by 0.01V relative to VID.


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  • Closed Accounts Posts: 37 Brian OH 99


    So if my cpu is only requesting 1.176v then I can make the Vcore be like 1.18v and the CPU will still work the exact same?


  • Registered Users, Registered Users 2 Posts: 878 ✭✭✭Luck100


    Yes, that's the whole point of the offset voltage - to increase/decrease the Vcore compared to the VID. At a given clock (say 4.8 GHz), there's some minimum Vcore required for your chip to be stable under load. You should be tuning the offset to find that minimum. Generally you want to run you chip at lowest stable voltage possible - low volts are good for chip health and lifespan, but not enough volts and you're not stable.


  • Registered Users, Registered Users 2 Posts: 878 ✭✭✭Luck100


    You can check out what kind of clock/voltages people are using here
    http://www.overclock.net/t/1247869/official-the-ivy-bridge-stable-suicide-club-guides-voltages-temps-bios-templates-inc-spreadsheet

    Also some good overclocking guides on that forum, look for the one on ivybridge.


  • Closed Accounts Posts: 37 Brian OH 99


    Thanks. Now I'm going to see how high it can get. If I can get to 4.9 or 5GHZ with like 1.2V or so, would that be bad for my PC? It won't always be at 1.2v and 5GHZ as it has turbo enabled, so I guess it'd be ok? Or am I wrong? How much would my CPU's life lose out? It should still last 2-3 years more right?


  • Registered Users, Registered Users 2 Posts: 4,698 ✭✭✭Gumbi


    Thanks. Now I'm going to see how high it can get. If I can get to 4.9 or 5GHZ with like 1.2V or so, would that be bad for my PC? It won't always be at 1.2v and 5GHZ as it has turbo enabled, so I guess it'd be ok? Or am I wrong? How much would my CPU's life lose out? It should still last 2-3 years more right?

    As long as you can cool it (max of 90 degrees in small FFTs of Prime over an hour), you're fine all the way up to 1.4v. That being said, with a Hyper 212, you'll start hitting your thermal limits around 1.3v give or take depending on your case cooling.

    Also, be aware that Asrock boards are known for reporting lower than actual voltages. But as long as you can cool it you should be fine.


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  • Closed Accounts Posts: 37 Brian OH 99


    I'm on 68*C on prime 95 now on small FFTs test for an hour @ 4.7GHZ. Max voltage of 1.24v and usually 1.185v-->1.2v.
    Tried getting 4.8GHZ and it wouldn't be stable even when I was put the voltage as far as 1.3v. When I tried making the voltage 1.8v (because my CPU says it only needs 1.176v) it wasn't stable either. It's at the lowest voltage possible now @ 4.7GHZ to be stable. 1.85-->1.9v average, 1.2v sometimes. (btw I enabled LLC and it kept making my voltage go under the ammount the CPU needs and therefor kept BSODing my CPU. I set it to auto and it is now stable.

    This is a good overclock right? Could you rate it out of 10 for me? 1.24v max isn't too high right?


  • Registered Users, Registered Users 2 Posts: 10,299 ✭✭✭✭BloodBath


    4.7ghz on a 3570k @ 1.24v with a 212 evo is 10/10. It doesn't get much better than that.


  • Registered Users, Registered Users 2 Posts: 878 ✭✭✭Luck100


    I really hope 1.8v and the higher numbers are typos....that would electrocute your cpu instantly. Probably you can't even set it that high.

    Sounds like 4.7GHz is your sweet spot. Every chip seems to go up to a certain level pretty easily, and then there's a barrier when you need lots more voltage to go any higher. 1.24V and temps under 70C in prime is good from what I hear. Nobody can guarantee safety of any overclock, but those are pretty sane numbers. Just be sure you're reading your max voltages and temps correctly. There's a lot of other voltages/temps in those monitors that are lower but not relevant.

    For LLC - usually there are different levels of LLC. I have a gigabyte board, they're called stuff like 'normal', 'turbo', 'extreme'. For Asrock I think they use numbers, with 1 being the most LLC ('extreme' for me) and bigger numbers being less. You can google around and find out easy enough. Anyway, the most extreme LLC should make your load voltage very close to VID+offset. If LLC is off, you should expect load voltage to be quite a bit lower than VID+offset (that's the 'droop'). You can temporarily go back to stock voltage to play with the LLC levels if it's not stable.

    Most people seem to use strong levels of LLC when overclocking, but it's a bit of an art as you'll have to shift the offset to compensate different levels of droop. I think the downside of strong LLC is that it makes your VRMs hotter. (Yes, more temps to worry about).

    I'd say don't sweat it too much if you're already hitting 4.7GHz at 1.24v and < 70C. I'd be happy with those numbers.


  • Registered Users, Registered Users 2 Posts: 10,299 ✭✭✭✭BloodBath


    I think it's % on Asrock boards. I have mine at 75% and it keeps the max voltage close to what I have it set to.

    100% makes it overvolt and anything less makes it undervolt.


  • Registered Users, Registered Users 2 Posts: 4,698 ✭✭✭Gumbi


    It's def above average man, about 200mhz higher (even 300) than what most people would see at that voltage, you're doing well.

    Here's a friend of a friend's golden chip.

    Being cooled on a Macho HR02, so only slightly superior to Hyper 212 in cooling performance.


  • Registered Users, Registered Users 2 Posts: 5,604 ✭✭✭Slutmonkey57b


    Going back to the cooler/fans question, silent pc review is your best resource. Testbed sits in an anechoic chamber (soundproofed), he runs all tests at set voltages, and even provides sound recordings so you can judge the profile ofthe sound not just the db reading.

    Plenty of excellent air coolers for much less than 100 quid. But the key is actually decent case fans. More important not to let hot air build up in the case than to worry about the minor differences between a good 30 quid cooler and something like a noctua.


  • Closed Accounts Posts: 37 Brian OH 99


    So not a golden chip or not (I wanna brag to my friend who thought he was better than me with a 4.4GHZ OC >=3)

    Also thanks sl*tmonkey. I'm defo getting better case fans (the ones bloodbath recommended) and probs the sapphire r9 280x toxic for 320 euro at Xmas and maybe a better screen resolution in 4 months or so.

    p.s : my name says 99 because when I first started using the internet it was 1999 and I just like the 99 at the end of my usernames. I'm not some spoilt teenager born in 1999 lol.

    ----and so my overclocking tour has concluded - thanks for the help!


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