Should I Worry About 7-8c Difference Between Cores?
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Well i did lap the Thermalright as it was very slightly concaved, i lapped it which brought up the copper on the underside of the base of the thermalright, after this i held it up to a light with a right angle and you could only just see light around edges of the base of the heatsink, but as the base of the heatsink is so much larger than the surface area of the cpu i wasnt too concered about this??
I inspected the same on the cpu, but there was less than a mm of light getting through when i tried it with the right angle, i didnt bother lapping that (plus i was too chicken to lap the cpu) as i thought a layer of thermal paste would fill what little gaps there was
I inspected the same on the cpu, but there was less than a mm of light getting through when i tried it with the right angle, i didnt bother lapping that (plus i was too chicken to lap the cpu) as i thought a layer of thermal paste would fill what little gaps there was
So you wouldnt recommended Arctic way of doing it, by squeezing a horizontal line cross the center of the cpu and just applying the heatsink to the cpu?
Ive still got almost a whole tube of Artic Sliver left, i only put a pea size on the cpu and that all ive used of it, so i should have plenty. Think ill use the same method as last time (spreading it about) but this time ill also put some on the heatsink too
In the end i decided to lap the CPU, while i had the pc apart, took about 15-20 in total, went from 200, 300, and then 600 grit paper, didnt bother going for the mirror look some people do though. Applied the paste in the same way i did before but this time with a little less paste, smaller than a pea but bigger than a grain of rich. Now after 20 minutes of Prime95, Core Temp is giving me the following reads:
Core 0 59
Core 1 58
Core 2 51
Core 3 51
What are the odd of actually lapping a cpu, re seating it again and getting more or less the same readings?? Cores 0&1 are 1c cooler, where as Cores 2&3 are about 3c cooler. This could even been down to the temp of my room now. But over all the differences between the hottest and coldest have stayed the same. Im guessing im never going to get all cores to be around the same temp
Core 0 59
Core 1 58
Core 2 51
Core 3 51
What are the odd of actually lapping a cpu, re seating it again and getting more or less the same readings?? Cores 0&1 are 1c cooler, where as Cores 2&3 are about 3c cooler. This could even been down to the temp of my room now. But over all the differences between the hottest and coldest have stayed the same. Im guessing im never going to get all cores to be around the same temp
I lapped my Heatsink when i first installed it, didnt have the balls to do my cpu then, plus didnt know if it worked as didnt try it out before, so though its best not too. Thats an intresting thing you bring up there about the heatsink and fan actually. I have one of those Antec 900 Gaming case....ill just take a pic actually be easy to show you
Now it has that big arse fan on the roof of the case which it really close to my heatsink so you would think that that side of the heatsink would get cooler than the other side?, as the way the mobo is oriented it places cores2&3 on the right hand side of the heat sink which is where that fan is. Maybe ill try discounnection that fan and see what happens to the temps??
Now it has that big arse fan on the roof of the case which it really close to my heatsink so you would think that that side of the heatsink would get cooler than the other side?, as the way the mobo is oriented it places cores2&3 on the right hand side of the heat sink which is where that fan is. Maybe ill try discounnection that fan and see what happens to the temps??
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you should put your rig stats in your sig, will help people help you!
I have the same case, and from my experience with fans etc, I have all the fans on low, except for the CPU fan and the 200mm top fan, which are on max. putting all the case fans on max seems to give me too much turbulence in the case and way higher temperatures. Have a go with yours and you'll see what I mean!
What might be a good idea is to put the fan on the otherside of the heatsink from what the picture shows. having two fans next to each other is pointless
I have the same case, and from my experience with fans etc, I have all the fans on low, except for the CPU fan and the 200mm top fan, which are on max. putting all the case fans on max seems to give me too much turbulence in the case and way higher temperatures. Have a go with yours and you'll see what I mean!
What might be a good idea is to put the fan on the otherside of the heatsink from what the picture shows. having two fans next to each other is pointless
paste creeps into the microscopic holes you can't physically see, don't use more to fill in gaps between your block base and the IHS - that's not what it's designed for
i think if you lap your IHS you will see the temps become uniform, you could reseat your cooler 100 times and it won't fix the real issue.....ie that your IHS isn't flat.
**edit** well there's also the chance that the problem is under the IHS in which case you'll have to live with the temp differences.
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Did as you suggested and placed the heatsink fan on the otherside, and it increased my core temps by about 6-7c. So have now placed it back and temps are now down again. Im guessing as the fan was right next to the ram that probably produced a bit of heat??
A little, but not enougth to make that much of a difference. But with that many fans blowing on the heatsink I'm not supprised you've got problems! 
Before I get into this; be sure you have the fan mounted in the same direction as before. You want a clear unobstructed flow of air from the front intakes of the case through the processor and out the back. For this you want a linear flow of air; turbulent flows cause no end of complications. Unfortunately when you pull air in different directions like this its what your going to get.
This is largely guesswork on my behalf, but this is what your airflows used to look like:
A few things to remember. First, air is a fluid and so obeys certain rules such as always seeking the easiest path to flow along (path of least resistance). Second, having good airflow across your RAM isn't a bad thing. That Giel stuff runs at 2.1V and it has a heatspreader for a reason.
With your new fan position it'll look a little like this:
What’s happening here is that the suction from the 200mm flow is pulling air away from the bottom part of the heatsink, meaning in the red area the air is moving slower (note; it is still moving). The air for the cases back fan is taking the easier route around the heatsink rather then through it. Obviously this isn't using your heatsink that efficiently!
Now the problem with your first setup is that your fans weren’t running very efficiently. Using two instead of one might mean you can half the load on both, but you'll always be generating more noise then one. It would be better to remove the case fan have some sort of ducting to channel the hot air to the out-take.
The problem with the second set-up is that the larger fan is disrupting your airflow, and although the air is moving quicker it isn't doing so more efficiently.
My advice would be to keep the 200mm fan on its lowest setting, or turn it off altogether. Keep the rear fan on Medium or High to help it keep up with the processor fan. Do some benchmarking with stress-tests to see if it makes a difference.
Again; this is guesswork. Complex airflows are very difficult to model outside a lab.
Before I get into this; be sure you have the fan mounted in the same direction as before. You want a clear unobstructed flow of air from the front intakes of the case through the processor and out the back. For this you want a linear flow of air; turbulent flows cause no end of complications. Unfortunately when you pull air in different directions like this its what your going to get.
This is largely guesswork on my behalf, but this is what your airflows used to look like:
A few things to remember. First, air is a fluid and so obeys certain rules such as always seeking the easiest path to flow along (path of least resistance). Second, having good airflow across your RAM isn't a bad thing. That Giel stuff runs at 2.1V and it has a heatspreader for a reason.
With your new fan position it'll look a little like this:
What’s happening here is that the suction from the 200mm flow is pulling air away from the bottom part of the heatsink, meaning in the red area the air is moving slower (note; it is still moving). The air for the cases back fan is taking the easier route around the heatsink rather then through it. Obviously this isn't using your heatsink that efficiently!
Now the problem with your first setup is that your fans weren’t running very efficiently. Using two instead of one might mean you can half the load on both, but you'll always be generating more noise then one. It would be better to remove the case fan have some sort of ducting to channel the hot air to the out-take.
The problem with the second set-up is that the larger fan is disrupting your airflow, and although the air is moving quicker it isn't doing so more efficiently.
My advice would be to keep the 200mm fan on its lowest setting, or turn it off altogether. Keep the rear fan on Medium or High to help it keep up with the processor fan. Do some benchmarking with stress-tests to see if it makes a difference.
Again; this is guesswork. Complex airflows are very difficult to model outside a lab.
I'm keeping them all on low. I haven't found any temperature benifit from having them on medium or high. Keeps the noise down and saves me dusting it as much too. 
If you want to cool something you need a fan blowing directly. Case fans only keep the ambient temp in your case down at room level.
If you want to cool something you need a fan blowing directly. Case fans only keep the ambient temp in your case down at room level.