I want to get a 4770k and everything was picked out until i saw some people saying haswell cant use 2400hz memory. I want to use the Trident X 2400Hz memory 16Gb, mostly for editing thats why i want fast ram. But i heard that that high speed ram wont be compatible with haswell. Is that true ? :c If so, what other ram do you suggest ? Prefferably red ram. I was thinking of corsair vengeance or g skill ripjaws. :T I dont plan on OCing the ram is this is my first "High end" build. Ive been on a laptop for the past 5 years.
4770k and 2400Hz Memory?
- Thread starter JoseyMG
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No, Haswell takes DRAM to new heights (freqs) it's fully capable of running 3000 sticks...I'm running 32GB of 2400 right now on an i5 3570K, going to build my 4770K Sat and already have 32GB of 2666 for it, have done 1 build so far with 32GB of 2800 and 3 with 32GB of 2400 (all have been GSkill's Tridents (my favorite model of sticks for awhile now 
Tradesman1
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No, Haswell takes DRAM to new heights (freqs) it's fully capable of running 3000 sticks...I'm running 32GB of 2400 right now on an i5 3570K, going to build my 4770K Sat and already have 32GB of 2666 for it, have done 1 build so far with 32GB of 2800 and 3 with 32GB of 2400 (all have been GSkill's Tridents (my favorite model of sticks for awhile now
Haswell microprocessors are only guaranteed to work up to DDR3-1600 subject to certain constraints and JEDEC timings. Due to the strength of Intel's design, most microprocessors will handle speeds far above this as well as non-standard voltages and timings but it is never guaranteed. Running speeds above DDR3-2000 generally requires a bit of tweaking beyond simply enabling an XMP profile. It also requires a motherboard that is compatible with the high speeds and has adequate power delivery.
Tradesman1
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Have yet to hear of a 4770K that can't handle a minimum of 2666, even 3770K can handle that.....as long as it's not a cheapie mobo, there should be no problem....as far as Intel they ALWAYS just list their bare basic specs and also tell you they don't support OCing a CPU - "it voids the warranty", so why then do they make OCable CPUs....even the 4670Ks can handle 2666....2400 is no biggie for a K series CPU..........
I've seen a few low end i3 2000 series microprocessors have trouble running DDR3-2000.
Just a couple of days ago I helped a fellow out here who was having a hard time getting two Corsair Vengeance DDR3-1866 UDIMMs running stable with a 3570k and a Asus Sabertooth Z77. Solid components across the board, just a runt of a CPU that needed an extra bump in the right spot. Even if 995 chips out of every tray are capable of running DDR3-2000 without breaking a sweat or requiring any tweaking, there's still 5 that will not despite passing the DDR3-1600 validation process.
Intel has a very mature fabrication process and a very well designed memory controller, and given that the 4000 series microprocessors have only been available retail point for a little over a month I would not be surprised at all if no one has reported one that fails to run DDR3-2400+ simply due to the comparatively small sample size. Eventually a few will creep up just like that 3570k that I mentioned, or those low end Pentiums and i3s which are drawn from the bottom of the semiconductor barrel so to speak. At that point, Intel will not do anything about it because there's technically nothing wrong with it.
I do not like to provide false hopes, so I'm always careful to say something along the lines of "99% of the time it works flawlessly or with a little tweaking, but it's never guaranteed".
Tradesman1
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i3's yes some i5's yes, I was talking Kmodels and in particular the 4770K since that was the object of the question....When you see mobo specs and they have an (OC) after the DRAM freqs, it actually indicates that an OC of the CPU may be required, not as so many believe that you have to the DRAM - the DRAM is spec to run at the sold freq - their are so many myths and 'stories' still running around and perpetuated because people read things (often written by people who base their writings on what they read, rather than hands on experience and that deal with the vendors it's ridiculous.
As far as the few, that's generally true and why I said a min of 2666, and while the 4770K has only been available rtail for a short while, there have been around for quite some time, before the release Asus did some testing with a couple hundred of them on OCability among other things, see here:
http://www.hardocp.com/article/2013/06/01/intel_haswell_i74770k_ipc_overclocking_review/6#.UgXVcT98rrh
other mobo makers and DRAM makers have had them for some time now, my build will be with a 4770K ES (Engineering Sample) (I've been waiting to ensure the USB problem is gone.
But basically if the CPU is Haswell and a K i'll recommend they 4770K should run up to 2666/2800 at 32 GB and the 4670K up to about 2666 w/ 32GB both can gen go higher w/ less DRAM, say 16GB, at least that's what a couple of the DRAM makers have found....with a locked CPU, I never suggest over 1866
As far as the few, that's generally true and why I said a min of 2666, and while the 4770K has only been available rtail for a short while, there have been around for quite some time, before the release Asus did some testing with a couple hundred of them on OCability among other things, see here:
http://www.hardocp.com/article/2013/06/01/intel_haswell_i74770k_ipc_overclocking_review/6#.UgXVcT98rrh
other mobo makers and DRAM makers have had them for some time now, my build will be with a 4770K ES (Engineering Sample) (I've been waiting to ensure the USB problem is gone.
But basically if the CPU is Haswell and a K i'll recommend they 4770K should run up to 2666/2800 at 32 GB and the 4670K up to about 2666 w/ 32GB both can gen go higher w/ less DRAM, say 16GB, at least that's what a couple of the DRAM makers have found....with a locked CPU, I never suggest over 1866
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