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Can i use 8x4gb of memory with i5-2500k

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December 5, 2011 8:53:49 AM

hey i have been looking at building a system for some time and now finally have money. i would try to keep the system below 2000 dollars for now so didn't want one of the sb-e chips. although i did want 8x4gb memory as i want to use ram disk and ram cache. so i was wondering if i use an 8 slot x79 asus board and 2500k cpu can i utilize all 8 slots. also if using ram disk and ram cache will ssd improve read/write speeds significantly

More about : 8x4gb memory 2500k

December 5, 2011 10:03:07 AM

and thanks heaps in advance to anyone who assists me. will be much appreciated
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December 5, 2011 10:37:24 AM

The 2500K requires an LGA 1155 motherboard (P67 or X68). There aren't any LGA 1155 motherboards on NewEgg that have 8 RAM slots. They have 2 or 4. You could do 4x 8GB, but they are really expensive.

The X79 motherboards use LGA 2011, which means that they only support the i7-3960X or i7-3930K CPUs.
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December 5, 2011 10:55:08 AM

i thought i read that the x79 boards had backwards compatability. will have to check
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December 5, 2011 10:56:50 AM

whoops that was forwards compatability
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December 5, 2011 11:15:25 AM

okay so this is what i have so far,
cpu fan
http://www.tigerdirect.com/applications/SearchTools/ite...
79.99 dollars not sure if this is compatible with sb-e

cpu
http://www.pccasegear.com/index.php?main_page=product_i...
699 dolars

mb
http://www.tigerdirect.com/applications/SearchTools/ite...
330 dollars

memory
2x http://www.tigerdirect.com/applications/SearchTools/ite...
95 dollars each

graphics
http://www.tigerdirect.com/applications/SearchTools/ite...
260 dollars [intend to crossfire with 7xxx series]

hdd for data
http://www.tigerdirect.com/applications/SearchTools/ite...
140 dollars

ssd for os
http://www.tigerdirect.com/applications/SearchTools/ite...
105 dollars [is it necessary with ram cache and ram disk]

psu
http://www.tigerdirect.com/applications/SearchTools/ite...
150 dollars [possible overkill but prepared for pcie3.0 and good price]

case
http://www.tigerdirect.com/applications/SearchTools/ite...
140 dollars [fan config looks great don't know about the size though]

although with the increased price of the cpu may revert to lga 1155 and 2500k, i would lower ram and just have ram cache
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December 5, 2011 6:32:10 PM

I can't help you any further. I have no idea what you will be doing and why you need 32GB RAM or 16GB with RAM cache. That is unusual.
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a b } Memory
a b V Motherboard
December 5, 2011 6:56:24 PM

Or a $700 six core sandy bridge CPU? Your thread says a 2500K? Very confusing info and change ups here.
Exactly what are you going to use this PC for?
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December 5, 2011 7:01:32 PM

It sounds like he wants a persistent RAMdisk. Basically, when you boot, your hdd writes your OS and/or apps to RAM, and when you shutdown, your RAM writes the data back to your hdd. You'll get slower boot and shutdown times, but your PC will be considerably faster when it's on. I suspect a RAMdisk large enough to store an OS (maybe 24GB out of 32GB installed) paired with a SSD, could still have reasonable boot and shutdown times.

You can also use a non-persistent RAMdisk (since RAM loses all data when it loses power) for temp files, paging file, browser cache, etc. I had a small one setup on a 32-bit XP machine, since you can only use 3.25GB RAM, and it did make alt-tabbing into and out of games faster, but it was nothing spectacular.

I think the maximum amount of RAM on LGA1155 is 32GB, so you'd need 4x8GB. It would be cool to do, but I don't think it would be much benefit over having a 6Gb/s SSD as boot times are already <15sec. and browsers launch instantly, even with 1st-gen SSDs. You could do the paging file thing, but keep in mind you're taking usable RAM away from your system, making a paging file more necessary.

With 64-bit OSes and SSDs, I don't think RAMdisks are very useful for home users.
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a b } Memory
a b V Motherboard
December 5, 2011 7:06:11 PM

^Yeah, I agree there, with an SSD you don't need a RAMdisk, would seem pointless to me, but I am not very familiar with them.
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December 5, 2011 7:22:44 PM

I am curious to what you will be using this system for?

also are you sure you are able to xfire the 7000 series with the 6000? I would bet that you could not, if they are like most gpus.
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December 5, 2011 9:26:36 PM

I thought crossfire could work with different models; does that not include different series. purely for the future pcie 3.0 cards and ram disk i have decided it's not worth the extra cost for the cpu and extra ram. so going with 15-2500k, z68 board and half the ram; shoul i go for 4gb ram cache with 2 ssd in raid 0?
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December 5, 2011 9:27:30 PM

I thought crossfire could work with different models; does that not include different series. purely for the future pcie 3.0 cards and ram disk i have decided it's not worth the extra cost for the cpu and extra ram. so going with 15-2500k, z68 board and half the ram; shoul i go for 4gb ram cache with 2 ssd in raid 0?
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December 5, 2011 9:58:34 PM

I would completely abandon the ram cache idea. 64-bit OSes can use more than 3.25GB of RAM, therefore it's usually better to let the OS decide how to use it, instead of basically telling it to not use it.

SSDs are plenty fast on their own. If you can get 2x128GB (or whatever you're looking at) for cheaper than 1x256GB, get the dual drives, but you probably won't need to do it for speed.
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December 5, 2011 10:01:45 PM

with ram cache wouldn't that then assist with the maximum number of writes to the ssd's though
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December 5, 2011 10:11:38 PM

4gb ram cache, <4gb os, >8gb apps [mainly games, web surfing, word etc]
is that not more than enough ram for apps and such
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December 5, 2011 11:56:56 PM

I'm just giving you advice. I don't think you'll benefit from what you're trying to accomplish. If I were you, I'd get 8GB RAM for the whole system, a 120GB to 240GB SSD for OS, apps, and games, a HDD for data, videos, music, and games I don't play often, and spend the rest on other parts. But it's your money and you can use it how you like.
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December 6, 2011 1:21:36 AM

im not necessarily doing it for speed just trying to keep writes to the ssd's as minimal as possible as i don't want them slowing down on me
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December 6, 2011 1:24:07 AM

im not necessarily doing it for speed just trying to keep writes to the ssd's as minimal as possible as i don't want them slowing down on me
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December 6, 2011 1:27:14 AM

looks like it's only $100 for 16gb any way not too expensive for increased speed and increased longevity of ssd''s
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December 6, 2011 2:09:53 AM

I'm still curious what you're caching that needs to be written so often. I'm not trying to change your mind, as it's your money. I just gave my opinion since you asked. To summarize, no it won't add any noticible speed or longevity for your SSD.

Good luck with the new build.
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