RAM Upgrade - Timings

[Harpss1ngh]

Hi Guys,

Just bought a set of Corsair Vengeance 12GB (3x4GB) DDR3 PC3-12800C9 1600MHz Triple Channel Kit (CMZ12GX3M3A1600C9) as I couldn't find another set of CL6 OCZ Reaper PC3-12800 RAM to match what I already have.

I kept my existing OCZ memory installed and it boots completely stable with all 6 banks with my current OC 21x200 = 4200MHZ.

My OCZ Reaper kit is rated at CL6 (6-8-6-24) Timings and the Corsair kit runs at 9-9-9-24 Timings as advertised. I'd like to tighten the timings to get somewhere in between, so far I managed to reach 9-8-7-22 (posts on stock 1.5v DRAM Bus Voltage!) but decreasing any further and I can't post. I've tried increasing DRAM Bus Voltage to 1.6v and the QPI/DRAM is currently at 1.37500v but I still can't get stable, is it safe to increase further?

The OCZ kit runs at 1.65v on the CL6 timings and this new kit runs at 1.5v on CL9.

 

[Justintime]

I'd try about 1.4v qpi and 1.65v, doubt it'll do any harm whatsoever.

 

[setter]

Could indeed be a conflict with the voltages, i was using a similair reaper kit, (7-7-7-24 1600mhz kit) swapped it out for a 12gb kingston hyperx kit. Thankfully it was a fairly straightforward change, set the reapers to 9-9-9-27 to match the kingstons. Shutdown and took out the reapers and installed the kingstons. Still have the ocz kit but no point in running them with the new ram. 12gb is more than enough for me.