New
#1371
16GB Kingston HyperX 1600Mhz/1.65V
21852 MB/s
As mentioned below in Paul's link, with more than two RAM cards and 4GB RAM or more you might need to bump the integrated memory controller voltage, QPI/DRAM, sometimes the DRAM voltage may need a little bump also.
You can run memtest86+ to test the RAM and motherboard slots.
Have a look at this tutorial.
RAM - Test with Memtest86+
Run it for 8 full passes, with 12GB RAM this may take more than several hours, best to run overnight.
If you get any errors you can stop the test.
Check your DRAM and QPI/DRAM voltages in your BIOS, let us know what they are and we can suggest a bump.
Post a CPUZ tab snip of the CPU, Mainboard, Memory, and SPD tabs.
Let us know if you have any questions.
This is my memory assessment: Corsair CMZ8GX3M2A1866C9B 4Gx4 (16G Total) @
933.4Mhz 9-10-9-27 2T
C:\Windows\system32>winsat mem
Windows System Assessment Tool
> Running: Feature Enumeration ''
> Run Time 00:00:00.00
> Running: System memory performance assessment ''
> Run Time 00:00:05.16
> Memory Performance 25795.42 MB/s
> Total Run Time 00:00:06.33
Not bad - huh?
I have upgraded to 16gig of corsair vengeance LP now. On stock speeds which is 9-9-9-24 CR2 DDR3 1333.
Corsair CML8GX3M2A1600C9 x 4
Code:Memory Performance 16305.89 MB/s > Total Run Time 00:00:06.96
Depends if I upgrade to a ddr3 cpu or not I guess. Thats one reason I havent sold my ddr 8 gig ram I now got spare now tho, so if I do upgrade and then keep this i5 as a secondary system the old 8 gig is still there to use with it.
Although I want vt-d which this hasnt got (wish I got i7-860 now), I dont see why I should bother with sandy bridge, its only 1 gen up. I could overclock to get the ram running at its max speed but this pc is pretty powerful and is enough for what I need it for.
I must admit, I am slightly confused by that... According to this page, the i5-750 is DDR3 1066/1333..? DDR3 slots aren't backwards compatible with DDR2, so if you're currently running DDR3 then your CPU supports it, just not at their full speeds.
That's a valid point... It might change when Ivy Bridge comes out though, according to a note on Wiki, it's expected to have about a 20% increase in CPU power compared to Sandy Bridge... And it's apparently going to be backwards compatible with the Sandy Bridge platform. :)
I have an i5 750, and am running 1600MHz Ram. I always assumed it was the Motherboard that determined what Ram can be used? A Guy