Gigabyte GA-Z87X-UD3H ddr2933 OC dram voltage?

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pepi93

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Gigabyte GA-Z87X-UD3H ddr2933 OC dram voltage?



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I've decided to buy this board. At $130 it's a no brainer where as the Asus Pro costs $190.

Planning to throw a i5 4670k on it. with a Noctua NH-D14 HS

I took a look at the specs and it says memory voltage at 1.5v.

Does anyone know if bios dram voltage options go higher than 1.5v? I want to buy 1.6v memory modules...

G.SKILL Ripjaws X Series 16GB (2x8GB) DDR3 2133MHz CL9 Dual Channel Kit (F3-2133C9D-16GXH)


What are all the dram bios voltage options?

Thanks in advance.
 
Solution
dalethepcman
As for the difference in the board specs, ask MSI, I don't think anyone here can definitively tell you what the differences are.

The specs I was referring to are the JEDEC DDR3 memory specification that states a maximum voltage of 1.575, The memory you listed is 1.6v, and the actual specification for DDR3 calls for 1.5v. You should stick to 1.5v memory unless you like your system to crash/BSOD.

As for the differences between CL9 and CL10, here is a couple links for you to do some research :)

I will boil down a little bit for you though. A 10% lower CL = 10% faster access time to ram. Lower CL can be of greater benefit than increased frequency. A higher frequency increases memory throughput (how much data can be transferred in a...
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dalethepcman

dalethepcman

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You really should stay within the DDR3 spec for optimal stability and lifespan which is 1.5v.

The memory voltage is controlled by the memory controller, which now goes through the CPU, so you really don't want to use memory above 1.5v on a current generation Intel chip.


Additionally, higher frequency memory means little to the CPU itself, stick with 1866 1.5v would be y recommendation.
 
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pepi93

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I totally hear what you're saying but the thing is that those specs are for rev 1.0 of that board and I can't find other specs...and not for the ddr3 2933 oc version either...this board is now in it's 3.0 revision.

Also, is there that big a difference btwn CL9 and CL10? for overclocking...not max OC just mid range to high
 
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dalethepcman

dalethepcman

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As for the difference in the board specs, ask MSI, I don't think anyone here can definitively tell you what the differences are.

The specs I was referring to are the JEDEC DDR3 memory specification that states a maximum voltage of 1.575, The memory you listed is 1.6v, and the actual specification for DDR3 calls for 1.5v. You should stick to 1.5v memory unless you like your system to crash/BSOD.

As for the differences between CL9 and CL10, here is a couple links for you to do some research :)

I will boil down a little bit for you though. A 10% lower CL = 10% faster access time to ram. Lower CL can be of greater benefit than increased frequency. A higher frequency increases memory throughput (how much data can be transferred in a period of time), but also increases latency (time it takes to access the ram). Unless you are moving massive amounts of streamed data on a regular basis (file servers, virtual desktop servers etc..) you will have greater benefit from tighter timings than higher frequency.

http://en.wikipedia.org/wiki/Memory_timings
http://en.wikipedia.org/wiki/DDR3_SDRAM

 
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pepi93

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Thanks, I've decided to go with the cl9 tighter timings at 1866mhz, 1.5v

or I might even go with tighter timings but with the 1600mhz...

this seems to be a great choice, very tight timings...thoughts?

G.SKILL Ripjawsx F3-12800CL8D-8GBXM 8GB 2X4GB DDR3-1600 CL8-8-8-24 1.5V Memory Kit

most of the Cl9's are 9,10,9,28, there are also 9,9,9,24 but they cost about the same as the one I mentioned above.

all at 1.5v, and all 2x4gb modules
 
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