Crucial and G.Skill Kit Compatibility

Toggle sidebar Toggle sidebar
W

whitetoo

Honorable
Jul 9, 2013
2
0
10,510
Hello everyone,

This is my first post on the forum as I am usually able to find my answer on the search but this is more of a personalised problem and my lack of memory knowledge is hindering me. Would any of you gurus be able to help me out?

I have tried to do a memory upgrade on my PC. The existing memory was:

G.Skill 3x 2GB (6GB)
http://www.newegg.com/Product/Product.aspx?Item=N82E16820231223

Great memory but the product is now discontinued in the UK. Ideally I wanted to ADD to the existing 6GB so made sure the memory I purchased matched the G.Skill speed and was compatible with my motherboard (Asus P6T Deluxe).

I have purchased the below kit:

Crucial 3x 4GB (12GB)
http://www.directron.com/ct3kit51264ba.html

My RAM slot configuration is as follows:
http://assets.overclock.net.s3.amazonaws.com/1/1d/1d484f45_vbattach88289.png

DIMM A2
DIMM A1
DIMM B2
DIMM B1
DIMM C2
DIMM C1

------------
I have tried the below configurations with the two kits:

DIMM A2 - G.Skill 2GB
DIMM A1 - Crucial 4GB
DIMM B2 - G.Skill 2GB
DIMM B1 - Crucial 4GB
DIMM C2 - G.Skill 2GB
DIMM C1 - Crucial 4GB

The PC boots but only recognises the G.Skill kit boot screen shows 6GB only.

------------

DIMM A2 - Crucial 4GB
DIMM A1 - G.Skill 2GB
DIMM B2 - Crucial 4GB
DIMM B1 - G.Skill 2GB
DIMM C2 - Crucial 4GB
DIMM C1 - G.Skill 2GB

The PC refuses to boot, no monitor signal either.

------------

DIMM A2 - Empty
DIMM A1 - Crucial 4GB
DIMM B2 - Empty
DIMM B1 - Crucial 4GB
DIMM C2 - Empty
DIMM C1 - Crucial 4GB

PC Boots with 12GB recognised.
PC is currently running the above config.
crucial_12GB.JPG


As I purchased the upgrade at the same speed (at least I hope I got that right) I was really hoping to make use of the G.Skill 6GB RAM to bring my operational RAM to 18GB for my machine.

Sorry if any of this is really newbie I've been looking at this stuff for so many weeks now things are starting to become blurred. Any help would be greatly appreciated.

Thank you guys and girls.
 
Solution
Tradesman1
What you've run into is fairly normal, It's not really a good idea to mix sticks, and while often they will work (sometimes not at all) it will be at defaults or lower timings....You can try to take these up to 1333 for a performance and bandwidth increase, could make an initial try (after jotting down all your current BIOS settings we get into) of raising freq to 1333, base timings to 9-9-9-24, CR the same at 2T, DRAM voltage at 1.6, and the MC voltage (believe QPIVTT on your mobo) initially to 1.2
Sort by date Sort by votes
W

whitetoo

Honorable
Jul 9, 2013
2
0
10,510
Thank you for your reply. I researched the thread you suggested and did a little more research into the Asus P6T MB. Many people seemed to experience the problem with the RAM when the MB automatically selected 1066mhz for both kits. It's indicated on both kits that they can run at 1333mhz so I set this frequency in the BIOS and inserted the G.Skill kit again into the slots. Still no post.

I read through the specs again for both kits and saw that the G.Skill had a voltage of 1.5 - 1.6 but the new Crucial kit only had a suggested voltage of 1.5. Crucial marketed this as "power saving". I decided to manually force the voltage to 1.5 in the BIOS incase the system was trying to run both kits at 1.6v.

I'm pleased to say I am now running at 18GB Ram @ 1066mhz:

RAM18GB.JPG


I'm afraid I don't have much clue with the latency stats. Is it detrimental to run the memory at 1066mhz instead of the suggested 1333mhz?
Am I missing out on a whole load of speed or does it not really matter?

Obviously going from 6GB to 18GB has made a big impact on my system, I render a lot of videos and high resolution images. I am a happy camper now but just curious about the frequency settings if anyone could share their expertise?

Hope this helps someone else anyway.
 
Upvote 0 Downvote
Tradesman1

Tradesman1

Legenda in Aeternum
Jun 5, 2013
67,883
40
126,960
What you've run into is fairly normal, It's not really a good idea to mix sticks, and while often they will work (sometimes not at all) it will be at defaults or lower timings....You can try to take these up to 1333 for a performance and bandwidth increase, could make an initial try (after jotting down all your current BIOS settings we get into) of raising freq to 1333, base timings to 9-9-9-24, CR the same at 2T, DRAM voltage at 1.6, and the MC voltage (believe QPIVTT on your mobo) initially to 1.2
 
Upvote 0 Downvote
Solution
You must log in or register to reply here.

TRENDING THREADS

Latest posts

Moderators online

Share this page

COMPANY
RESOURCES
FOLLOW
Top Bottom