Patriot Extreme Performance 4GB problem

Thekwango

Thekwango

Thekwango

Soldato
Joined
5 Feb 2009
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N. Ireland
howdily doodily folks, me....again!

ok, so i got this ram with my new build

https://www.overclockers.co.uk/showproduct.php?prodid=MY-031-PA

to go with ga-p55a-ud3 board and i5 750(no oc) , windows 7 64bit

in order to get the ram to run at full speed, 1600mh,z i have to go into the bios and select something called XMP (xtreme memory profile i think) this sets the voltage to 1.92v and the ram runs at full speed. only problem is that it is then unstable. fails memtest and cpu fails prime95 . if i disable XMP it returns ram voltage to 1.52v and the speeed to 1066mhz and we pass all test with flying colours. is there any way to get the ram running at full speed and remain stable bearing in mind i know next to nothing about changing bios settings!
 
1.92V seems very high to be honest, most modern DDR3 kits run on less than 1.65V.

I just looked at the memory and it says "Tested and compatible with Intel P35 and X38 chipsets" which to me suggests that it is older DDR3 memory.

If XMP is setting the voltage so high then I would suggest you avoid using it and do things manually, start with 1.65V and try something like 1600Mhz 8-8-8-24.
 
wooohooo fella you lost me there with the end bit....lol

in bios i have a 'DRAM VOLTAGE' option thats currently set to auto- i take it i just change that to manual and select 1.65 from the list? not a clue how to change the timings tho. cant see an option in the bios to do that- tho i'm probably just being stoopid! on the patriot website it gives the voltage for this ram as 1.9 tho?
 
Yeah I've seen that but the trouble is I think you bought the wrong type of memory, as I said most modern DDR3 modules run on 1.5V-1.65V, 1.9V is certainly dangerous to LGA1366 processors although I'm not sure about LGA1156 which yours is (I would recommend you stay below 1.65V to be safe until someone confirms).

The problem is if your memory is rated at 1600mhz 7-7-7-20 on 1.9V then it may not do very well on 1.5V-1.65V, your best option may be to return it and get some memory designed with P55 chipset in mind (which will be lower voltage stuff).
 
Last edited:
Thekwango said:
sweet, forgot all about the distance selling act, was getting ready to unload the ram on an auction site! lol
Click to expand...

Just tell them you bought the wrong type, I just did a quick search and found this:

Older boards "775" X48, P45 had a Northbridge and the DDR3 RAM was able to use a higher voltage.

New "1156" "1366" X58, P55 have the memory controller inbuilt into the CPU, thus the voltage now allowed is far lower. Any of the new systems have a max rating of 1.65v for the DDR3 RAM
Click to expand...

Hopefully that explains it better but it does look like LGA1156 is the same, when you choose a replacement just be sure to confirm it operates on 1.65V or less.
 
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