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How much fast RAM can be supported?

Tags:
  • Overclocking
  • Intel i7
  • Processors
  • Support
  • RAM
  • CPUs
  • Compatibility
Last response: in Memory
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October 9, 2014 1:12:58 PM

Hi!
I have seen lot of people putting faster & faster RAMs say 2400Mhz, 2800Mhz & so on with processors for whom it is specified that ram support is upto 1333Mhz or 1600Mhz?
For eg I have seen people using i7-4770 processor & trying to overclock upto 2400Mhz but according to intel, i7-4770 have support for ddr3-1333/1600 as specified in following link:
http://
How is this possible?
And how to know upto what max frequency the processor can go with overclocking?

More about : fast ram supported

a b K Overclocking
a b à CPUs
October 9, 2014 1:32:44 PM

How high clocked ram the cpu can support differs from chip to chip. 1333/1600 mhz is just the guaranteed speed the cpu will support. If it will run, mostly depends on the ram and the motherboard, though.
2400mhz should run on all 87/97 boards, though. Anything above 2400mhz is usually not better and especially not worth the cost.
2400mhz cl10 and 2133 mhz cl9 are in the sweet spot for ddr3/haswell.
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October 9, 2014 1:49:08 PM

Thanks for the reply.
DubbleClick said:

2400mhz should run on all 87/97 boards, though. Anything above 2400mhz is usually not better and especially not worth the cost.

By 87/ 97, do you mean the mobo chipset no.?

DubbleClick said:

2400mhz cl10 and 2133 mhz cl9 are in the sweet spot for ddr3/haswell

So one should not go for 2800Mhz or above speed RAMs right? Then what about
G.Skill Trident X Series 32GB (4 x 8GB) DDR3-2800 Memory (F3-2800C12Q-32GTXDG) is it worth? I have i7-2600 processor and planning to buy a mobo which has support for such high speed RAMs.
I am new to choosing compatible components. So please explain me.
Any help is appreciated.

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a b à CPUs
October 9, 2014 1:53:48 PM

lava1789 said:
Thanks for the reply.
DubbleClick said:

2400mhz should run on all 87/97 boards, though. Anything above 2400mhz is usually not better and especially not worth the cost.

By 87/ 97, do you mean the mobo chipset no.?

DubbleClick said:

2400mhz cl10 and 2133 mhz cl9 are in the sweet spot for ddr3/haswell

So one should not go for 2800Mhz or above speed RAMs right? Then what about
G.Skill Trident X Series 32GB (4 x 8GB) DDR3-2800 Memory (F3-2800C12Q-32GTXDG) is it worth? I have i7-2600 processor and planning to buy a mobo which has support for such high speed RAMs.
I am new to choosing compatible components. So please explain me.
Any help is appreciated.



The 2800MHz kit is not worth the price. A 2400MHz kit like the Trident X Series 2400MHz kit would be fine.

1600MHz is the standard today, with Haswell favoring 1866MHz and above. Anything more though and you aren't going to see a difference (not that you would really notice the difference between a 1333MHz kit and a 1866MHz kit, either). With RAM prices so close across the MHz range, though, 2400MHz can usually be found for what a 1866MHz kit costs, or very close to it.

Take a look at this kit. It's quite close in price to many slower kits.
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a b K Overclocking
a b à CPUs
October 9, 2014 1:56:34 PM

It would mostlikely work, however it won't yield you much benefit even over a 1600mhz clock. Memory scaling on haswell is pretty good up to 2133mhz, on sandy bridge probably only until 1600-1866mhz.
But even if you see benefit, it will be around 0.5% system performance over a 2133/2400mhz kit, at best. But a 2800mhz cl12 usually costs about 1.5x as much as a 1866/2133mhz kit of same size. Even $20 extra would already be too much to pay, imo. What do you wamt the ram for anyway, I guess you use a dedicated gpu, so most of the anyway small benefit is already gone.

And yes with 87/97 I meant the mobo sets h87, h97, z87 and z97.

Personally, I was able to pick up a 2400 cl 10 kit of 16 gb for just $160. Thats $2 more than for a 1866mhz kit I would have chosen otherwise. The cheapest 2800 mhz kit I was able to find was $300 for 16 gb. Absolutely not worth it.
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October 10, 2014 10:06:22 AM

Thanks frag06c & DubbleClick for ur replies. What I understood is for my sandy bridge I won't get any noticeable performance in real uses, if it would have been Haswell, say on my other system I have i7-4510u, 2800MHz or more would have produce some improvements. Correct?

DubbleClick said:
What do you wamt the ram for anyway, I guess you use a dedicated gpu, so most of the anyway small benefit is already gone.

Desktop which has i7-2600 is used by my brother for animation purposes. So, for rendering his artwork, current 8gigs are not sufficient. As much amount of RAM as possible, I want to extend. I got that the processor supports 32gb max. So, the search for RAM. And we have quadro 2000 gpu. It does its job nicely but again RAM is insufficient.

I have come down to 2 RAMs:
http://www.primeabgb.com/gskill-tridentx-32gb-f3-2400c10q-32gtx.html
http://www.primeabgb.com/gskill-ripjawsz-f3-19200cl10q-32gbzh-ram.html
What I learnt is that this ripjaws z is somewhat better for quad channel than tridentx. The difference b/w those 2 kits is approximately 1,500INR i.e. 25 USD approximately. Its not that significant if I am going for about 440USD. And would ripjaws support Z77 chipset, which I am planning to go for, as tridentx supports z77?
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a b K Overclocking
a b à CPUs
October 10, 2014 2:47:14 PM

Z77 supports both sticks of ram. The tridentx line is g.skills newest high end line, the ripjaws z the old one. However, both of those seem to perform the same, being 2400mhz cl10 and the same timings. I'd just go for the cheaper kit, $25 isn't justified either way.

The sentence you quoted was about the ram speed, by the way, not the size. There's very little benefit after 1866mhz.
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a c 424 K Overclocking
a c 619 à CPUs
October 10, 2014 8:18:59 PM

With IB (the Z77) you generally need a K model CPU to run 2133 or above, some 3770s can run 2133 but generally you simpply want a K model as a CPU OC is generally required
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October 11, 2014 4:47:01 AM

Thanks for the replies.:) 

Tradesman1 said:
With IB (the Z77) you generally need a K model CPU to run 2133 or above, some 3770s can run 2133 but generally you simpply want a K model as a CPU OC is generally required

So, do you recommend buying a 1866Mhz one?
I know k ones are specially for O.C. but how much O.C.ing can I go with mine i7-2600? Also with i7-4510u? although I am not going to O.C. my i7-4510u, just asking for knowledge.:bounce: 
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a c 424 K Overclocking
a c 619 à CPUs
October 11, 2014 5:09:15 PM

Either 1600 or 1866 (if any problems w/ reaching 1866 can downclock to 1600 (they are both priced near equal), OCing the non-Ks, don't expect a lot
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October 11, 2014 10:41:44 PM

Thanks everyone for the replies. Really helped. Sorry others :(  since only I ans has to be chosen as soln.

Tradesman1 said:
Either 1600 or 1866 (if any problems w/ reaching 1866 can downclock to 1600 (they are both priced near equal), OCing the non-Ks, don't expect a lot

I would probably go with the tridentx 2400 keeping in mind that it may also be helpful later. Currently I am not buying anything but just surveying, later depending on the budget I would finalize.
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