G.Skill Ripjaws 1600 or 1333 ?

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Zico1989

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Jul 26, 2013
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Hi all,

I am planning to buy a ddr3 , 8gb ram for my new gaming rig.

I will be using a gigabyte ga-h77-ds3h mobo and an i5 3570 processor with an asus gtx 770 dc 2 oc.

I am confused whether I should get a 1600 mhz or a 1333 mhz ram , as I have read that a 1600 mhz ram runs at 1333 mhz and something about the maximum voltage limit for intel processors being 1.5 v which causes the bottleneck.

I am also puzzled about the changes that need to be done in bios and some xmi to alter the voltages to run the ram at 1600 mhz.

Also , do I need to manually set the frequency for the ram ?
Should I get 1x8 gb or 2x4 gb and will it considerably affect gaming performance ?
Should I get a 1333 mhz ram to avoid the complications (if any)?

I am a newbie and have little idea about this . Please help me out ......:??:
 
Solution
adimeister
It depends, for example, mine is an 8gb kit with 1866latency. When it booted up, mobo posted 1666mhz, I've just set the xmp profile then everything went well. :) IB proc will allow a 1600mzh ram, it simply means that it can support your GSkill Ripjaws with the LATENCY of 1600mhz.
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adimeister

adimeister

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Mar 26, 2013
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If you buy, just check the RAM, it says in the spec what voltage they run at and what frequency they have.

The G SKill ripjaws run at 1600mhz at 1.5v. Should be perfect for you. Get the 8gb, 2x4gb. Performance will vastly increase in dual channel mode against single channel mode of 1x8gb.
 
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Zico1989

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Jul 26, 2013
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I've read that IB processors will allow 1600 mhz ddr3 ram .... what does that mean ?
Do I need to set something manually like in bios or I'm good to go from the beginning i.e I just put the ram in the slot and it runs at 1600 mhz ?
 
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adimeister

adimeister

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Mar 26, 2013
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It depends, for example, mine is an 8gb kit with 1866latency. When it booted up, mobo posted 1666mhz, I've just set the xmp profile then everything went well. :) IB proc will allow a 1600mzh ram, it simply means that it can support your GSkill Ripjaws with the LATENCY of 1600mhz.
 
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Solution
Tradesman1

Tradesman1

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Jun 5, 2013
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Not knowing what CPU you have, just the basics - IB (Ivy Bridge) is a native 1333 MC (memory controller) while the 4th Gen, Haswell is a native 1600 MC.......Next whenever you put a new stick or sticks of DRAM in a mobo it boots up at the MOBO's default which is generally 1333 or 1600...then if your sticks are 1600 or better, you simply enable XMP in the BIOS and select profile 1 - XMP will set the sticks up for you to the proper specs.........

As far as INtel and the 1.5-1.55, that is the recommended voltage of DRAM for the CPU when it is at stock speed, if OCing, then higher voltage DRAM at freqs of 2133 and up are fine....however strongly suggest against buying any sticks 1866 and under with a voltage rating over 1.5 unless they are running a CL of 7 or possibly 8........i.e. 1600 sticks with a CL of 9 and rated 1.65 is normally indicative of weak ICs (memory chips)
 
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Zico1989

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The processor is an i5 3570 .
The mobo is a gigabyte ga h77 ds3h . Is 1600 its default ?
If not do I need to alter xmp profile in bios ?
 
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Zico1989

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Jul 26, 2013
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What does latency of 1600 mhz mean?
What is the cas latency of a ram ?
Are they the same thing ?
What do I need to check before buying it to ensure that it is compatible with my mobo and processor ?
 
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Tradesman1

Tradesman1

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Jun 5, 2013
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OK, there is no such thing as 'latency of 1600 mhz'....1600 Mhz is simply the effective rate of the DRAM, the true freq is 800 but since this is DDR (DOUBLE data rate), it's referred to at a 1600 freq,

CAS latency or Cl is basically how many clock cycles that are required to process an action - so the lower the better (it can be found as the first number of the base timings, example timings of 8-9-9-27 ------it's the 8.

Definitely not DRAM has to be considered for a combination of the 2 i.e. a set of 2133/CL11 sounds pretty good, but it will easily be outperformed by a 1866/9 set of DRAM

To a degree the mobo plays in, many lower end chipsets and therefore their mobos may only support up to 1600 DRAM....the CPU is much more important in the equation...taking you for example if you went with the 3570 non K CPU, it might be able to run 1866, though 1600 would be the norm...but if you look at a mobo that supports up to 2800 or whatever, many folks buy the faster sticks then complain they don't run right, the K model CPUs can can handle much higher, but they have limits also, if you went the 3570K, a strong one can handle up to 32GB of 2400 sticks (like mine) or up to 16GB of 2666, where the i7, 3770K can run up to 2800 sticks.....hope this helps, know it's a lot of numbers
 
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