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Adding more DDR 3 ram help (voltage and timings)

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J

jerrolds

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Jul 26, 2010
The only way to guarantee it will work is to use matched sets. However, I've never had problems running different sets with the lowest speed of the two sets, highest timings of the two sets, and highest voltage of the two sets. Of course, my experience doesn't mean you won't have problems.

Right now I'm running a 2x2GB DDR3-1600 7-8-7-24 1.35v set and a 2x2GB DDR3-1600 8-8-8-24 1.65v set together @ DDR3-1600 8-8-8-24 1.65v

If you plan on pairing the linked sets, I would try running them @ DDR3-1333 9-9-9-24 1.6v
 
you are using 1600MHz 4gb now, we will suggest if you can using one kit at a time to avoid incompatible issue. if you adding another 1333MHz and your system will only running 1333MHz only not 1600MHz.
 
I'm confused what 195MHz you're talking about. They should be running at 1600MHz (or 800MHz in CPUz).
 
MattNo5ss said:
I'm confused what 195MHz you're talking about. They should be running at 1600MHz (or 800MHz in CPUz).
Click to expand...

I think thats the CPU Base frequency - 195mhz x 21 (my cpu multiplier) = 4095mhz

If i go to 200mhz x 21 = 4200mhz

One weird thing - that i never noticed before...why does my BIOS register the ram as DDR3-1333, but the part number as correct?

Whats going on here..

http://imageshack.us/f/94/phototuq.jpg/

phototuq.jpg
 
Last edited:
jerrolds said:
I think thats the CPU Base frequency - 195mhz x 21 (my cpu multiplier) = 4095mhz

If i go to 200mhz x 21 = 4200mhz

One weird thing - that i never noticed before...why does my BIOS register the ram as DDR3-1333, but the part number as correct?

Whats going on here..

http://imageshack.us/f/94/phototuq.jpg/
Click to expand...

Ah, the bclk is 195MHz, gotcha. So, you should use the 8x RAM multiplier for 8x195MHz = 1560MHz, or 8x200MHz = 1600MHz if you can get the bclk to 200MHz.

Your BIOS recognizes the RAM as 1333MHz because that's what the CPU's memory controller is rated for. Also, the RAM you're using might be DDR3-1333 sticks that were tested to run at DDR3-1600 by G.Skill so the rating/part number is 1600MHz from G.Skill.
 
MattNo5ss said:
Ah, the bclk is 195MHz, gotcha. So, you should use the 8x RAM multiplier for 8x195MHz = 1560MHz, or 8x200MHz = 1600MHz if you can get the bclk to 200MHz.

Your BIOS recognizes the RAM as 1333MHz because that's what the CPU's memory controller is rated for. Also, the RAM you're using might be DDR3-1333 sticks that were tested to run at DDR3-1600 by G.Skill so the rating/part number is 1600MHz from G.Skill.
Click to expand...

yes, this is correct!!!

and if you plug all 4 with same timing/voltage, normally it should be fine!
 
BTW...

+1 to the Gskill Rep. That is the extra touch companies need.


(Proud owner of (2) 2x2gb SO-DIMM, (3) 2x2gb 204pin, and (1) 2x4gb 204pin GSKILL RAM)
 
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