Can a Motherboard holding back memory overclocking?

Jono8

Jono8

Jono8

Caporegime
Joined
20 May 2007
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Surrey
Hi,

I have a thread going in the memory section but don't seem to be having much joy so thought I would post here as it seems more populated.

I recently upgraded from a 2500k to a 3770k. I have a p67a gd53 (bit old now I know) and two 2x4gb sets of ram. I can get my 3770k stable at 1.22v in bios and 4.5ghz no problem but I am having big issues with memory!

With my 1600mhz rated 8gb ram sets I could not run them stable above 1333mhz. If I leave all memory settings at default the computer loves it. I thought this was because they were mixed sets and taking up 4 dimm slots so I decided to buy a 2x8gb 2133mhz Corsair Vengeance Pro set.

Now, I simply CANNOT get it to run at 2133mhz...I can really check if it is the ram as I don't have another system to check it on. If I leave it at defaults (1333mhz 9,9,9,24 Timings) then everything is fine. If I enable XMP, then I can barely boot into windows and get pretty instant BSOD (within seconds). I have tried just setting the speed at 2133 and everything else at auto but still no dice. I have tried upping CPU I/O voltage and system agent voltage but again, nothing. Even with both those at max safe values ( 1.2v) I get instant crashes at 2133mhz.

I then tried 2000mhz...same thing.

I am now trying 1866mhz and 11,11,11,27 timings and I have run the latest Prime with AVX instructions, small FTT's for 20 minutes now without issue.

So what is the issue and why cant I get 2133mhz? Is my CPU's memory controller so bad that it simply cannot do 2133mhz? Is the new ram I bought dodgy and not making its rated speeds? Or, is my old p67 chipset motherboard simply not good enough to run an IVY at 4.5ghz and RAM at 2133mhz?

Any help would be much appreciated.

Thanks

Edit: Damn, I dun goofed the title :(
 
Well 1866mhz is still going strong on small ftt's with the avx instruction set in the latest Prime 95. Perhaps I will just have to stick with that : /


The latest Prime 95, with Small ftts and avx instructions would be pretty much the most stressful thing you can put it under right?
 
yh,blend test will stress a lot of ram too

I had same issue with Samsung green on gigabyte z77,no matter what it wouldn't pass 1800mhz till newer bios came out to fix it,now 2200mhz is possible

seen few issues on msi boards and ram not clocking well,can only be poor bios support/updates imo
 
wazza300 said:
yh,blend test will stress a lot of ram too

I had same issue with Samsung green on gigabyte z77,no matter what it wouldn't pass 1800mhz till newer bios came out to fix it,now 2200mhz is possible

seen few issues on msi boards and ram not clocking well,can only be poor bios support/updates imo
Click to expand...

Maybe this is the issue. To be honest my board Is pretty long in the tooth and would only run an Ivy cpu with a new bios which also needed an intel management engine flash as well!

2000mhz, 2133mhz was just not happening what ever voltages I set.

Still going ok on 1866mhz so maybe I will just stick with that.

So your issue with the Sammy green was purely down to the motherboard not supporting at higher than 1800mhz?
 
wazza300 said:
yh it will be fine,high mem freq doesn't give much tbh,other than in benchmarks
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You see this is what is making me think I should just DSR my vengeance pro set and stick with my 4x4gb dims at 1333mhz. It just feels a bit rubbish running at 1333mhz lol.
 
1600mhz would be my min speed,upto you though if you wanna dsr them

you might eek out 1600mhz from your 1333mhz kit
 
wazza300 said:
could be idk

cantsee why 4gb modules/16gb wont work either
Click to expand...

Well it all seems weird to me but I am getting fed up with changing things about. PC seems perfectly stable with ram at 1866mhz (played BF4 a fair bit + 2 hours of avx instructions on prime 95) so I will just leave it at that I think and keep this new 2x8gb set at 1866mhz and sell my other two 1600mhz ram kits.

Tis a shame that 2133mhz seems an absolute no go.
 
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