Mixing memory- will this work

Shell shocker deal on newegg looks appealing, wanted to know if I could mix it with my current ram

current mobo -
current ram -

new ram -

2 empty ram slots on my mobo, however one of them is close to my cpu fan and the heatsink on the ram would likely get in the way. Would I be able to mix 2 sticks of the new ram with 1 stick of the old, or should I just take the heatsink off of one of the sticks so it fits?
6 answers Last reply Best Answer
More about mixing memory work
  1. Welcome to Tom's Forums! :)

    All of those links are copy/paste and bad; please edit.

    Q - What HSF?
  2. Sorry about that, should be fixed now

    Here is the fan I'm currently using -
  3. Best answer
    Nope, that combo will not run :( It's doubtful that 1.65v RAM will work together much less 1.50v RAM; the tollerance is ±0.1~±0.2v so your 1.80-0.15 = 1.65v vs 1.50+0.15 = 1.65v but that's the EXTREME. One is under-volted and the other over-volted and in my experience won't work or be reliable. They may work at 'SPD' of DDR3 1333 MHz 'assuming' there's a JEDEC #3 with 667 MHz see below. Use CPU-z to 'see' if there's a 667MHz @ 1.50v THEN the CAS timings on the CMZ8GX3M2A1600C9B MUST match.

    Bottom-Line, it's nothing that 'I' would risk running in my rigs.

    DDR3 1600 9-9-9-24 @ 1.80v
    DDR3 1600 9-9-9-24 @ 1.50v
    DDR3 1600 9-9-9-24 **** too much voltage disparity ****

    PGS34G1600ELK -!
    Frequency: 457 MHz
    (Cas# Latency) 6
    (RAS# to CAS#) 6
    (RAS# Precharge) 6
    (tRAS) 18
    (tRC) 24
    Voltage: 1.5V

    Frequency: 533 MHz
    (CAS# Latency) 7
    (RAS# to CAS#) 7
    (RAS# Precharge) 7
    (tRAS) 20
    (tRC) 27
    Voltage: 1.5V
  4. Thank you for the quick reply. When I get home I will check CPU-z and see what's there. It look's like they just sold out of the ram though unfortunately.
  5. The bottom has fallen out of DDR3 1600 2x4GB pricing so I wouldn't loose any sleep over it, there's a crazy deal every day on Newegg; I'm on that site like crazy. Tomorrow it'll be the same or better on G.SKILL, Corsair or Mushkin - Mushkin is due for a 'Shell Shocker'.

    The best deal is/was F3-12800CL8D-8GBXM for $60 ->
  6. Best answer selected by Nerio27.
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