RAM: High Profile 2400Mhz vs. Low Profile 1600Mhz for IGP & Cooler Clearance

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MyNewRig

MyNewRig

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May 7, 2013
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So i been breaking my head over this for a while, I am going to get the i5 4670K Haswell CPU with the HD4600 IGP.

Now i will also install the highest end GTX 780 in this system, but will also enable the Intel HD4600 GPU so that i can watch movies on it while gaming on the other card or for multi-players on the same machine, each using one of the GPUs.

In short i will enable and be using the HD4600 in this system, also i will Air-cool the CPU using the Hyper 212 Evo or something similar that would fit the 1150 Socket, so Cooler clearance is an issue.


with that said, i know from online reviews that Ram speed affect IGP performance significantly, and also from my experience with my previous Ivy system that the 2400Mhz ram speed up booting time a lot and also affects system performance over an 1600Mhz clock.


It has been popular during Ivy times that people stick to 1600Mhz ram (especially when using a dedicated GPU card) and any extra money would go towards getting more RAM and not Faster ram, while CL9 latency was preferable and 1.5v to not stress the memory controller in the CPU.


It is worth noting that i will only be getting the 8GB Kit and not 16GB, because the later is outside my budget since i need to allocate most of my budget toward the GTX 780 GPU because i game on 3 monitors and this card is kind of the minimum requirements for my 4K resolution, so i need to cut any unnecessary spending on components like extra RAM or more powerful PSU Than needed etc...

Also it is worth mentioning that i do not use or intend to use an SSD as i have a mechanical HDD which is Seagate Barracuda 1TB HDD so RAM speed make a difference in loading times.


Also all the three options below cost exactly the same and are within my budget

Now i have the following options which i am very confused about.


1- Get the Kingston HyperX 2400Mhz modules which cost almost the same as a corsair vengeance 1600Mhz but has very tall heat spreaders with a total of 54mm tall, which would cause serious clearance issues with the CPU cooler, but i am hoping that if i leave the nearest memory slot empty that the cooler will not extend beyond it and then i could have High Profile fast RAM and in the same time fit the Hyper 212 in, but of course at CL11 latency and 1.65v

2- Get a low profile G.Skill Ares DDR3 PC17000/2133MHz CL11 which will give me fast ram but not as fast as i wish and also allow me to fit the Hyper 212 guaranteed, and is also in the same price range of both the kits mentioned above, but still has a CL11 and 1.6v

3- Take the safe and traditional route and get the Corsair Vengeance 1600Mhz low profile modules, with CL9 and 1.5v that will allow me to fit my cooler perfectly but i believe that this RAM will be much slower than i would like it to be (i am not 100% sure if i really need fast memory) which will significantly slow down my HD4600 IGP performance and overall system loading times since i have a mechanical Harddisk as mentioned above.


What do you think my best option or setup would be? given that all of the above will cost exactly the same and is within my budget?


Thank you very much in advance.
 
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Someone Somewhere

Someone Somewhere

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Sep 23, 2012
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How on earth does the 1600MT/s RAM cost the same as the 2400? There's usually a +50% or more difference. Where are you buying from?

Remember that you void your warranty on anything above 1.5V.

Intel's iGPUs still aren't fast enough to max out DDR3-1600.

Strongly suggest you get cheaper RAM and get yourself an SSD.

What PSU are you going for?
 
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Madn3ss795

Madn3ss795

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When you put a gtx780 in your system, the HD4600 will disable itself ( unless your moo support Lucid MVP which only make things worse ). A 780 ( ar any other GPU nowadays ) is capable of exporting different images on different monitors at once so you can easiliy game on one and have multimedia software play movies on another monitor. As for doing multiplayer games on the same machine : nope, it won't work this way.
 
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MyNewRig

MyNewRig

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I am buying in Europe and with all our VAT/High-Margins stuff we end up with pretty odd retail prices, don't compare it to US pricing, but i have the Corsair 1600Mhz @ 61 Euros while the HyperX 2400Mhz @ 65 Euros, so almost the same and not a 50% difference



The benchmarking i have seen for Ivy's HD4000 tells a very different story, performances increases very significantly for IGP going from 1600Mhz to 2400Mhz RAM (i can find you the link if you like)



No matter how "cheaper" i go, it will only be a tiny fraction of what the SSD will cost and it is the least of my priorities at this point due to the GTX 780 already maxing out my budget so i need to cut costs where i can.



I am thinking about the Corsair CX 600W which is the cheapest that i could find that i believe will handle my setup without compromising on brand quality, i have tried this PSU before, it is stable and its fan is really quite so i liked it, it will cost a lot more to step-up the PSU grade like going for GS or TX or the likes, also it will cost a lot more going for the CX750.




I have tested all these stuff before on a 7970Ghz card with an 3570K and 1) i can enable both card in the same time from BIOS and have them working as in one playing a movie and the other playing a game and 2) when i run the movie and the game on the same GPU the movie does look really fuzzy and just bad while when running it on the IGP and gaming on the GPU things were working really nicely and 3) With SoftXpand Duo you can plug two keyboards/controllers, two mouses, and different monitors and use the IGP for one session and the GPU for another and do multiplayers on the same machine and there are some youtube videos showing many people using that setup successfully which is exactly what i need.
 
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Someone Somewhere

Someone Somewhere

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What store are you buying from? I'll find you something cheaper.

Use the other display outputs on the 780 - HD4600 is useless compared to that.

Until you tell me where you are buying from, I can't tell if the CX600 is overpriced - many places have a "corsair is the best so lots of markup" mentality.

Having multiple sets of video drivers on one system is usually a pretty bad idea - they interfere with one another.
 
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MyNewRig

MyNewRig

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I would buy from any store that offers a better deal i do not have much preference in this regards unless it is really a small unknown shop, i check prices everywhere, if you want to know the type of prices i am getting you can check here http://www.prisjakt.nu/

Also i will already be using all 4 ports on the GTX780, 3 of which will do Surround and the 4th will be for system monitoring and basic stuff, i still need to connect an extra one or two monitors to the motherboard's HD4600 ports, for a total of 6 monitors and i would like to be able to utilize them fully.

I do agree with you that with the AMD card the two display drivers where acting funny, i am hoping that the nVidia drivers will play nicely with the Intel's and then i could achieve what i want. this is one of reasons i am picking up a Geforce card this time!
 
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MyNewRig

MyNewRig

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About MB, Anything that is best Hackintoshable from these three GA-Z87X-UD3H, GA-Z87X-D3H or GA-Z87MX-D3H pending testing results after Monday's WWDC by apple.

The RAM kit you posted is not available in stock in that store, also i wouldn't buy from them because they are not that known and also does not provide the best shipment for my location, therefore i suggest that you leave the pricing issues to me and lets keep this technical and discuss pricing in general terms, because i know my market better when it comes to prices and who to buy from :)

So back to the original question, you don't see any advantage for going with 2400Mhz kit or even enabling IGP all together even if i technically can?
 
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MyNewRig

MyNewRig

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So is anyone else interested in providing any further input? why is this subject so vague and unspecific? many sites claiming different things, the general public going with the cheapest 1600Mhz, tests showing that it matters a lot in benchmarks but not in real-world application.

Why does it not matter in real-world application when in benchmarks it shows a difference? is there any more scientific or reliable approach to testing this and coming up with a conclusive and clear recommendation?

It is really strange that people are investing to install really expensive stuff in their systems like two SLI Titan graphic cards, or 6 cores CPUs or super expensive motherboards but still put 1600Mhz RAM in such system, what is the point and what is the conclusion?
 
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Someone Somewhere

Someone Somewhere

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Because it's not a bottleneck - synthetics show a difference, but that difference is so small compared to everything else that it barely matters.

The X79 platform has quad-channel RAM, so it's the equivalent bandwidth of dual-channel DDR3-3200. Plus a platform bottleneck is quite uncommon today - main reason people go for faster chips isn't gaming performance (except for some badly-coded ones), it's other stuff. An i3 is still hard to bottleneck for now.
 
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