MB OC Report :: EVGA nForce 790i SLI FTW Digital PWM
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October 17, 2008, 10:21 AM
Hardware Canucks Reviewer
Join Date: Mar 2007
Location: Edmonton, AB
First Course: 2x1GB Memory Clocking
The first sacrifice to the memory clocking gods on this 790i FTW Digital motherboard is going to be my trusty kit of
Crucial Ballistix 2x1GB PC3-16000
. These modules are monsters in every motherboard they touch and were good enough to crack 1100MHz dual 32M at 8-7-6 and over 15K read bandwidth in Everest on my EVGA 790i Ultra. Needless to say, I fully expect similar clocks with this motherboard being pretty much the same chipset. As always, a breakdown and photo of the setup during testing:
CPU: Intel C2D E8400 (L808A476)
CPU Cooling: Thermalright Ultra-120
RAM: Crucial Ballistix 2x1GB PC3-16000 CL9
NB Cooling: Stock
SB Cooling: Stock
PWM Cooling: Stock
GPU: HIS HD3870X2
PSU: Thermaltake Pure Power 750W
HD: Seagate SATAII 80GB 8MB NCQ
OS: Windows XP Pro x64 SP2 (fully updated)
The setup as tested...
click for full size...
Keep in mind, these results at this point are simply the results obtained on stock cooling with no volt mods to the board or additional cooling. Initial FSB clocking indicates that the memory clocks might suffer do to a lack of SPP voltage. Here now is the abbreviated dual 32M
If there were any questions as to whether or not the 790i SLI and 790i Ultra chipsets were the same in memory clocking, you can put those to rest. This kit basically repeated everything it did on the 790i Ultra...to an extent. Along the way, the Ballistix clocked exactly like they did on the 790i Ultra counterpart, but at the top end of the spectrum the 790i SLI chipset has let this memory down. Basically, I ran out of vSPP as that is what is needed for higher memory clocks. I am quite confident that once I do the vSPP mod and put water cooling on the chipset, this kit will clock every bit as good as my 790i Ultra board after it too got the mods. Those results should be posted in this section in the near future. Here are the screenshots so you can see voltages and other settings involved in the clocks.
Click link for full size screenshot...
775MHz :: 1.90v
810MHz :: 2.00v
840MHz :: 2.10v
900MHz :: 1.90v
940MHz :: 2.00v
980MHz :: 2.10v
1000MHz :: 1.90v
1040MHz :: 1.95v
My System Specs
Intel i5 660 - Clarkbar Power
4 x 4GB GSkill & OCZ mixing and matching
X800 GTO old school passive power
Who cares about anything else, I have a 10GB RAM drive.
Win 7 x64
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