Haswell RAM issue

Britton30 said:

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.

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.

@ 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.

Was your winsat mem score any different on the Haswell rig?

Yes Kelly, look here: https://www.sevenforums.com/overclock...ml#post2483109
The Sandy rarely gets over 29,000.

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.

Yes, that's my take on it too.

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.

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

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.