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Windows 7: Haswell RAM issue

04 Aug 2013   #21
ICIT2LOL

Desk1 7 Home Prem / Desk2 10 Pro / Main lap Asus ROG 10 Pro 2 laptop Toshiba 7 Pro Asus P2520 7 & 10
 
 

Quote   Quote: Originally Posted by Britton30 View Post
John, nothing to fret over, the problem is with memtest, not Haswell. Intel has changed the innards of Ivy and Haswell so that most of the normal benchmarks don't have anything to read from. From what I understand, Haswell handles RAM much better in different ways but isn't reflected in many tests. Memtest only check for errors, it can't tell us how efficient RAM is.
Ok Gary I won't try the memtest I am interested in finding that new memtest though.


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04 Aug 2013   #22
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

Gary a couple of thoughts.
1. Check your temp across your cpu cores and see how close to each other they are.
2. Don't use XMP and see what happens.
Note: On my Asus motherboard I have a choice.
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04 Aug 2013   #23
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

@ John: The memtest 86+ version 4.2 is the newest. There is a memtest 86 (no +) but is not better.

Jack, not using the XMP results in the same readings and the RAM defaults to 1600, 11-11-11. My core temps are within 7C of each other.
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04 Aug 2013   #24
kbrady1979

Windows 7 Professional 64bit SP1
 
 

Was your winsat mem score any different on the Haswell rig?
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04 Aug 2013   #25
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

Yes Kelly, look here: http://www.sevenforums.com/overclock...ml#post2483109
The Sandy rarely gets over 29,000.
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04 Aug 2013   #26
kbrady1979

Windows 7 Professional 64bit SP1
 
 

OK, thanks. I knew you had it posted somewhere, but couldn't remember where. I'm just going to assume that even though the benchmarks don't reflect it, Haswell utilizes RAM differently and possibly more efficiently.
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04 Aug 2013   #27
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

Yes, that's my take on it too.
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04 Aug 2013   #28
Layback Bear

Windows 7 Pro. 64/SP-1
 
 

Are you still using the stock Intel cooler?
I don't know about your Haswell chip but for other Intel chips 7C is a lot of difference. I would watch them closely. If the chip get hot the memory controller get hot.
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04 Aug 2013   #29
kbrady1979

Windows 7 Professional 64bit SP1
 
 

I thought 7* difference under load was pretty good actually. Ivy Bridge has some variation but Sandy Bridge had quite a bit, sometimes well over 10*C
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04 Aug 2013   #30
Britton30
Microsoft MVP

Windows 7 Ultimate X64 SP1
 
 

I have a Cooler Master 212EVO on it now, dropped idle temps from 38C or so to the mid 20's. I first used just one fan then added the second one and made zero difference in temp, idle and load.

My Sandy's temp spread is 16C under IBT. I think it's because I let it get to 100C once. Otherwise it still runs well.

Oh, I did run Prim95 14.5 hours on Haswell at 4.2GHz with no errors and max temp was 69C, I'm happy with that.
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 Haswell RAM issue




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