F3-16000cl9t-6gbtd + evga x58-sli3

[jnthn]

Howdy,

I am looking to get the best performance from my RAM. I recently built my rig that includes:

-EVGA X58-SLI3 (131-GT-E767-TR) with Phoenix Technologies BIOS (ver 6.00 PG)

-Intel Core i7-950 @ 3.07GHz

- G.SKILL F3-16000CL9T-6GBTD (6Gb total)

-Window 7 Ultimate (x64)

I selected the F3-16000CL9T-6GBTD DIMMs because EVGA lists this RAM in the memory compatibility list for their x58 series motherboards (under DDR3-2000), although I don't see their board in G.SKILL's list. The BIOS supports 1600MHz 2:12, 1867MHz 2:14, 2133MHz 2:16 and 2400MHz 2:18. When I set the memory to 1600MHz, the BIOS sets the timings to 11, 11, 11, 29, 88 with command rate at 1t. Also, with voltage on auto it selects 1.700v which worries me, since folks recommend 1.65v or less.

Given the speeds available in the BIOS, what is my best option? Will this RAM run at 1867MHz or 2133MHz? If not, what are the tightest timings at 1600MHz? If I manually lower the voltage to 1.65v, will this cause a problem?

Thanks,

Jonathan

[Tradesman]

The sticks should run at 2000 w/ timings of 9-9-9-24 and CR at 2.....to run that on your system may take a decent system OC

[GSKILL TECH]

With 2 : 12 setting, raise BCLK to 167.

167 x 12 = ~DDR3-2000

Then set timings 9-9-9-24, DRAM Voltage 1.65V..

Find CPU VTT voltage, once the precise amount is applied, the system should be perfectly stable.

For DDR3-1600, set timings 7-7-7-24, then work your way down.

Thank you
GSKILL TECH

[jnthn]

So if I run DDR3-1600, can I use either of these settings?:

2:10, BCLK=160, 7-7-7-24 CR1

or

2:8, BLCK=200, 7-7-7-24, CR1

BCLK=160 is easy enough, but I'm not experienced at over-clocking. Is there any great advantage in *trying* to get things stable with BCLK=200? Also, I am unsure what you mean by work my way down. Is there a method for finding tighter timings? Where can I read about this?

Thanks,

Jonathan

[Tradesman]

Yep and whatever seems the best to you, as far as timings, you could try tightening them down could start at 6-7-7-22, which lowers your CL to 6 and then tighten some more, but if you hit the 6-7-7-22, most anything else you try, you'll never 'see' an increase i.e. 7-6-7-22 or so, even in benchmarks it won't really show any increase.