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Motherboard / RAM compatibility

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June 17, 2010 3:31:51 PM

I'm planning on building a computer with this mother board and RAM:

Gigabyte P55A-UD3 Motherboard - Intel P55, Socket LGA1156, ATX, Dual-Channel DDR3, PCIe, USB 3.0, SATA 6Gb/s

A-DATA Gaming Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model AX3U1600GB2G9-2G

^4GB total

Now while this RAM was featured on the gigabyte website as ram this motherboard supports, i noticed that the motherboard has DIMM slots for RAM at 1.5V. The description on the ram on newegg says the voltage for the ram is 1.55-1.75.

Now granted they're compatible, but is there gonna be a loss of performance for the difference in voltages? Should I look to buy different RAM?

THanks for the help!
June 17, 2010 3:45:08 PM

computerguyman said:
I'm planning on building a computer with this mother board and RAM:

Gigabyte P55A-UD3 Motherboard - Intel P55, Socket LGA1156, ATX, Dual-Channel DDR3, PCIe, USB 3.0, SATA 6Gb/s

A-DATA Gaming Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model AX3U1600GB2G9-2G

^4GB total

Now while this RAM was featured on the gigabyte website as ram this motherboard supports, i noticed that the motherboard has DIMM slots for RAM at 1.5V. The description on the ram on newegg says the voltage for the ram is 1.55-1.75.

Now granted they're compatible, but is there gonna be a loss of performance for the difference in voltages? Should I look to buy different RAM?

THanks for the help!


I would recommend this: http://www.newegg.com/Product/Product.aspx?Item=N82E168...

It's cas7 1600mhz 2x2gb... but the best part is that it's only 1.35v. I have this stuff in a GA-P55-USB3 board with an i7-875k, and it is phenomenal memory. 100% compatible. You just boot to bios setup and select profile 1 [there's only 1 profile listed too]. It changes all settings to listed, no worries, no manual setup. :)  [also, since they run 1600 cas7 at 1.35v, not only are you well under the safe limit for the i-series processors, but you have headroom for overclocking if you so desire]
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June 17, 2010 4:23:33 PM

Actually did a little bit of searching (from your suggestion), and found

G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL9D-4GBRL

This more closely fits the voltage and fits the mobo.

Thank you for your feedback! :D 
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June 17, 2010 8:31:40 PM

No problem :) . I also looked at the ripjaws, but I went with the eco because there was no difference in performance, but the chips were lower voltage.

P.S. Don't forget to select best answer on your thread! :) 
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a b } Memory
a c 80 V Motherboard
June 18, 2010 12:15:14 AM

The A-Data RAM isn't a good choice for an Intel system. The maximum RAM voltage supported by current Intel chips is 1.65v. Anything more than that can damage the on-board RAM controller. The G.Skill Eco RAM suggested would work fine. If you prefer the Ripjaws then I would get this CAS 7 kit instead of the CAS 9 kit you linked to.

G.SKILL Ripjaws Series 4GB (2 x 2GB) 240-Pin DDR3 SDRAM DDR3 1600 (PC3 12800) Desktop Memory Model F3-12800CL7D-4GBRM $109.99
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