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RAM Speed: Did I Get Ripped Off?

  • Memory
  • RAM
Last response: in Memory
September 22, 2011 3:21:41 PM

Here is what I was supposed to get from cyberpower:
(Spec in Sig)

From Inoice:
MEMORY: 8GB (2GBx4) DDR3/1600MHz Dual Channel Memory Module - (Kingston HyperX )

Looking at CPU-Z, I see the following:

So, doubling the Frequency = 1330MHz, not 1600MHz O,o

Am I looking at this the wrong way or missing something? Or did they flat out send me 1333MHz instead of 1600MHz RAM?


More about : ram speed ripped

a b } Memory
September 22, 2011 3:27:13 PM

They may have put 1600MHz RAM into the board, but a lot of boards (except brand new ones) don't automatically give you 1600MHz without an overclock. What do the sticks say on them physically?
a c 347 } Memory
September 22, 2011 3:30:05 PM

No you didn't get ripped-off that's the Default speed of the RAM. CyberPower uses the defaults and it's up to the user to OC the RAM.

If you post the 'SPD' tab then I'll post the steps needed in the BIOS for the RAM to run at full spec - easy fix. :) 
Related resources
September 22, 2011 3:46:49 PM

As Requested... (and thank you!)

I am close to being ready to OC this i5 2500k. But, having never done it before, I spend a Lot of time looking around for the absolute simplest approach.
I'll get there eventually ;) 

a c 347 } Memory
September 22, 2011 4:30:56 PM

The information I've 'sort of' found on 9905403-174.A00LF seems to indicated that the RAM is seemingly rated to DDR3-1600 9-9-9-27-2N @ 1.65v. What I had 'hoped' to see was an XMP-1600 column which would indicate it's clearly XMP <or> 800 MHz.

Meanwhile, assuming DDR3-1600 9-9-9-27-2N @ 1.65v

Extreme Memory Profile (X.M.P.) -> Disabled
System Memory Multiplier -> 16 ; 100MHz * 16 = 1600MHz
/Memory Frequency (Mhz) 1600 MHz ; double check read-only/
DRAM Timing Selectable (SPD) -> Quick
CAS Latency Time -> 9
tRCD -> 9
tRP -> 9
tRAS -> 27
Command Rate (CMD) -> 2

QPI/Vtt Voltage -> Auto ; if you have problems 1.125v
DRAM Voltage -> 1.58 ; if you have problems 1.60v~1.64v

Save & Exit = Yes

Problem the research I've found seems to indicate the RAM is 1.65v and the Rated Frequency is in question. IMO - contact Kingston with that Part Number '9905403-174.A00LF' and have them verify: 1. Rated Frequency and 2. Rated Voltage (1.50v or 1.65v) for DDR3-1600.

Sandy Bridge can run 1.65v RAM BUT 1.50v RAM is highly recommended for the SB IMC, 1.58v is the 'rated' maximum per Intel. Yes, 1.65v has not proven to damage the SB CPU but I'll never recommend ANY DDR3-1600 @ 1.65v.

Next, create a bootable CD/DVD of Memtest86+, use the ISO/zip file. Boot off Memtest and run 2~4 passes; note 8GB takes a long period of time. IF you have any errors then DRAM Voltage -> 1.64v and test again.

edit: Link to Memtest ->