i5 + P55-UD3R + RAM OC question

[gizbug]

Running at stock speeds now. My ram that I bought says 2000mhz, but the bios lists it at 1333mhz. I am trying to get my ram bummed up to 1600 or 2000mhz, but not going heavy on the CPU overclock (no more than 3.0ghz). 13x200 with ram at 200 seems like it is the only way I could run CPU low with ram at 2000. I am not sure of the downfall running at 13 CPU multiplier. Any comments or other options? Below is my bios settings.
The ram I am using is : http://www.gskill.com/products.php?index=217

Advanced CPU Features:
CPU Clock Ratio ................................ [20x]
Intel(R) Turbo Boost Tech .................. [Enabled]
CPU Cores Enabled ............................ [All]
CPU Multi Threading .......................... [Enabled]
C3/C6/C7 State Support ................... [Auto]
CPU Enhanced Halt (C1E) ................... [Auto]
C3/C6/C7 State Support .................... [Auto]
CPU Thermal Monitor ......................... [Auto]
CPU EIST Function ............................ [Auto]
Virtualization Technology ................... [Enabled] << Disabled if you do not use Vmware or Virtual PC Programs
Bi-Directional PROCHOT ..................... [Auto]


Uncore & QPI Features:
QPI Clock Ratio ...........................................x32
QPI Link Speed .............................. 4.26GHz
Uncore Clock Ratio...........................16x
Uncore Frequency .......................... 2133MHz (greyed out)
Isonchronous Frequency ..................[Enabled]


Standard Clock Control:
Base Clock (BCLK) Control ................ [Enabled]
BCLK Frequency (MHz) ..................... 170
PCI Express Frequency (MHz) ........... [100]

C.I.A.2 [Disabled]

Advanced Clock Control:
CPU Clock Drive ..............................[800mV]
PCI Express Clock Drive ................... [900mV]
CPU Clock Skew ............................. [0ps]


Advanced DRAM Features:
Extreme Memory Profile (X.M.P) ......... [Disabled]
System Memory Multiplier (SPD) ........ [10.0] (choices are Auto/6/8/10)
Performance Enhance ...................... [Turbo]
DRAM Timing Selectable (SPD) .......... [Expert]

Channel A + B + C

Channel A Timing Settings:
##Channel A Standard Timing Control##
CAS Latency Time ...................... 9
tRCD ....................................... 9
tRP ......................................... 9
tRAS ....................................... 24

##Channel A Advanced Timing Control##
tRC ........................................ 33
tRRD ....................................... 4
tWTR ...................................... 5
tWR ........................................10
tWTP ....................................... 21
tWL ........................................ 7
tRFC ....................................... 74
tRTP ....................................... 5
tFAW ...................................... 20
Command Rate (CMD) ................ 2

##Channel A Misc Timing Control##
Round Trip Latency ...................46



Advanced Voltage Control:

CPU
Load Line Calibration ................. [Disabled]
CPU Vcore ............................... 1.275 [AUTO]
QPI/VTT Voltage 1.150v ............ 1.100V [1.190V]
CPU PLL 1.800v ....................... 1.800v [AUTO]

DRAM
DRAM Voltage 1.500v .............. 1.600V
DRAM Termination 0.750v [AUTO]
Ch-A Data VRef. 0.750v [AUTO]
Ch-B Data VRef. 0.750v [AUTO]
Ch-A Address VRef. 0.750v [AUTO]
Ch-B Address VRef. 0.750v [AUTO]

 

[GLeeM]

Overclocking RAM doesn't improve performance as much as OCing CPU.

For example, running Fritz Chess Benchmark on i7 920 at 4.0 GHz

With ram at 1200 w/timings = 8 8 8 20 1T
29.70
14,254

With ram at 1600 w/timings = 9 9 9 24 1T
30.39
14,588

That's about 2.5%

With other benchmarks it's probably less.

 

[Ben90]

Only way to get to ddr2000 is to use a 200 bclock... what i find interesting though is how low your uncore is.

AFAIK on x58 systems (and i thought all i7 systems) uncore needed to be twice that of memory multiplier... my asus p6t doesnt even let me go lower than twice the memory multiplier, but urs is defaulting to 1.6x
if someone could clear that up for me that would be pretty cool...

Anyways if u really wanted to get the most out of your ram i would try first try to get 205 bclock stable with a low ass cpu/ram/qpi/uncore multiplier... then drop it down to 200 bclock and put ur memory multiplier at 10, and ur uncore as low as you can possibly get it... most likely it will be running at 3200mhz if it cant get any less than a 16x multiplier. I know my i7 has problems at 3200 uncore on stock voltages so u may need to add a little voltage to get there.

As for ur cpu u can leave it at stock speeds if u like, or oc it a little bit... either way when turbo goes off its gonna ramp up really really fast because of the 200 bclock

 

[gizbug]

So the uncore seems low to you?

 

[betasub]

Originally posted by: gizbug
I am trying to get my ram bummed up

 

[gizbug]

Originally posted by: betasub

Originally posted by: gizbug
I am trying to get my ram bummed up