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RAM for i7 4790K on Z97 mb
08-17-2014, 03:49 PM,
#1
RAM for i7 4790K on Z97 mb
I'm working towards a new build and did some research. After the research I'm sure I could still be labeled as ignorant. With this said, I think I'm looking at going with 2133 mhz memory....cas9....and a recommended ceiling of 1.5 volts. With this in mind I have found two options I think would work. Since I don't know brand reputation it would help to get feedback on the choices. Here they are....

1. Corsair Vengance 16Gb (2 x 8GB) 240-Pin DDR3 SDRAM DDR3 2133

See here: http://www.newegg.com/Product/Product.as...6820233332

AND

2. Patriot 16GB(2x8GB) Viper III DDR3 2133 (PC3 17000) CL11 Desktop Memory With Black Mamba Heatsink

See here: http://www.amazon.com/dp/B008T457SE/?tag...5jud63xq_e#

Any feedback would be nice. I like the look of these...think they will go nicely with the Gigabyte Black Edition mb....have a low latency...have enough RAM speed to take advantage of the Haswell architecture...a sweetish spot...and don't go over the recommended voltage. Am I correct? Any thoughts? Thanks!
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08-18-2014, 03:45 PM,
#2
RE: RAM for i7 4790K on Z97 mb
I think I hear crickets? Tongue Anyway, another look at the two choices mentioned made me realize I was in error about the latency. Seems like the Corsair Vengeance might be a better fit as it is lower than the Patriot...at a latency of 10....but higher than the Cas9 that I had mistakenly assigned.

Being a newb I have been trying to understand the priorities and how I might best go about buying RAM for the Devils Canyon refresh. I would like to go with 2133mhz, 16gb (2x8) and not exceed the recommended voltage of 1.5. I say this without full understanding of what might happen if I chose a lower latency kit with a higher voltage? I assume that clock speed is more important than voltage and so I figure the Corsair at 2133mhz...even with a latency of 10 is a pretty good compromise and would look sleek given my curren mb choice.

Btw...I came to the idea of using 2133mhz RAM after reading a lengthy article (don't remember the site) that discussed benchmarks and myths about RAM. What I came away with is that many people recommend, based on the past, not worrying about memory over 1600 mhz...but that the Haswell refresh can indeed benefit from faster RAM...at least to a point....and so this consensus would not apply to the use of this latest intel processor.

So if I were to put things together now....I would bet on the i7-4790K, Gigabyte Z97 UD5H Black Edition mb and the Corsair RAM as linked to at the top of this thread.

Input still welcome. Thanks!
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08-18-2014, 07:20 PM,
#3
RE: RAM for i7 4790K on Z97 mb
I found this an interesting read, though it is from a memory vendor.

http://www.corsair.com/en-us/blog/2014/m...lrealworld
CPU: Intel Core i7-4790K 4.7Ghz Mobo: Gigabyte Z97X Gaming 5 GPU: MSI GTX 970 Gaming 4G HSF: Cryorig R1 Ultimate
Mem: 2 x 8GB G.Skill TridentX DDR3 2400 SSD: Samsung 850 Evo 500GB + a few spinners
PSU: Seasonic SS-760XP Platinum Case: Fractal Design Define R5 Monitors: 2 x Dell 2007FP 1600x1200
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08-18-2014, 08:31 PM,
#4
RE: RAM for i7 4790K on Z97 mb
(08-18-2014, 07:20 PM)Dan-H Wrote: I found this an interesting read, though it is from a memory vendor.

http://www.corsair.com/en-us/blog/2014/m...lrealworld

Yes Dan! I believe that is the same article...except think I may have read it copied to another site? (but I live in a state of confusion).

So the sweet spot according to that article would suggest that the Corsair Vengeance 16gb 2133mhz Cas10 1.5v kit is a very good fit for my upcoming build. I will run another check for these specs among other brands. I believe Mathieu often recommends GSkill and Patriot...but I haven't been able to find anything bad about Corsair. And...really...I haven't found much about one brand versus another after spending a few hours searching? So I appreciate the response....crickets silenced! Perhaps I will be able to have my build nailed down in time for labor day sales! Big Grin
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08-19-2014, 12:22 AM, (This post was last modified: 08-19-2014, 12:23 AM by Dan-H.)
#5
RE: RAM for i7 4790K on Z97 mb
Excerpt from another article I had bookmarked at home.

They basically took some killer memory and tested it at different speeds and timings.

Haswell Recommendations

For discrete GPU users, recommending any kit over another is a tough call. In light of daily workloads, a good DDR3-1866 C9 MHz kit will hit the curve on the right spot to remain cost effective. Users with a few extra dollars in their back pocket might look towards 2133 C9/2400 C10, which moves a little up the curve and has the potential should a game come out that is heavily memory dependent. Ultimately the same advice also applies to multi-GPU users as well as IGP: avoid 1600 MHz and below.


Link to the last page of the article. (the conclusions)

http://www.anandtech.com/show/7364/memor...haswell/10
CPU: Intel Core i7-4790K 4.7Ghz Mobo: Gigabyte Z97X Gaming 5 GPU: MSI GTX 970 Gaming 4G HSF: Cryorig R1 Ultimate
Mem: 2 x 8GB G.Skill TridentX DDR3 2400 SSD: Samsung 850 Evo 500GB + a few spinners
PSU: Seasonic SS-760XP Platinum Case: Fractal Design Define R5 Monitors: 2 x Dell 2007FP 1600x1200
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08-19-2014, 07:13 PM,
#6
RE: RAM for i7 4790K on Z97 mb
(08-18-2014, 03:45 PM)andiron Wrote: I think I hear crickets? Tongue

I think the deafening silence is because this question has been asked and answered already, and opinion is to spend money in other areas before spending money on faster memory.

The thing that I'm curious about is the voltage issue (1.5V vs 1.65V) and if 1.65V should be avoided or if its common enough to not worry about even though technically it is out of spec for Haswell?
CPU: Intel Core i7-4790K 4.7Ghz Mobo: Gigabyte Z97X Gaming 5 GPU: MSI GTX 970 Gaming 4G HSF: Cryorig R1 Ultimate
Mem: 2 x 8GB G.Skill TridentX DDR3 2400 SSD: Samsung 850 Evo 500GB + a few spinners
PSU: Seasonic SS-760XP Platinum Case: Fractal Design Define R5 Monitors: 2 x Dell 2007FP 1600x1200
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08-20-2014, 12:50 AM,
#7
RE: RAM for i7 4790K on Z97 mb
(08-19-2014, 07:13 PM)Dan-H Wrote:
(08-18-2014, 03:45 PM)andiron Wrote: I think I hear crickets? Tongue

I think the deafening silence is because this question has been asked and answered already, and opinion is to spend money in other areas before spending money on faster memory.

The thing that I'm curious about is the voltage issue (1.5V vs 1.65V) and if 1.65V should be avoided or if its common enough to not worry about even though technically it is out of spec for Haswell?


Yes Dan...this is something I also don't quite get. Some people seem to shrug off the idea of staying at the recommended voltage of 1.5....while I also read of people concerned about going over for reasons of warranty and lifespan. It's interesting that pcpartpicker shows a lot of Haswell compatible RAM with voltages above 1.5....especially when it is supposedly officially recommended not to exceed this limit. But ultimately I don't understand it...and so it's much easier for me to just stay at 1.5v...and not try to tax my brain.

As for the question of faster memory....I wasn't exactly asking that question...at least not conciously! Big Grin Sorry if I gave this impression. I think I came to understand the mhz vs latency question just recently (while researching for this choice) as it pertains to...for example... a choice where you would pick between 1866mhz cas9 and 2133mhz cas10....the latter being the obvious choice given no consideration to brand or value. I believe this would be the correct priority.

Actually, what I was really aiming for in this thread was simply...."is Corsair and/or Patriot RAM a good choice?" I mean...are they good reliable brands of memory and would anyone argue another brand/model as being even better for a Haswell build?

Your recent posts have made for some interesting reading....and I'm pretty satisfied that the Corsair Vengeance will be a good choice. Corsair does make one 16gb kit that is 2133mhz cas9....but it's a big jump in price. I don't believe it would be worth the premium and think the cas10 more than adequate.

Never thought I would be learning even this much about memory! LOL Thank you for the replies!

PS. I will be sure to post my final build list for scrutiiny in the next day or so as it's pretty well complete.
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08-20-2014, 11:32 PM,
#8
RE: RAM for i7 4790K on Z97 mb
(08-19-2014, 07:13 PM)Dan-H Wrote: <snip>... even though technically it is out of spec for Haswell?

... technically out of spec ?? where'd you get that crazy idea??? Blush

more web research found this: http://www.intel.com/content/www/us/en/g...e-xmp.html

http://www.intel.com/content/dam/www/pub...asheet.pdf

for my someday/maybe (soon?) build I may ignore the 1.5 vs 1.65 and look at price/performance and where to spend the money.

These are the two I have in my favorites.

http://pcpartpicker.com/part/gskill-memo...66c9d16gxm

http://pcpartpicker.com/part/gskill-memo...0c10d16gtx

$25 more for the 2400/10 vs the 1866/9
CPU: Intel Core i7-4790K 4.7Ghz Mobo: Gigabyte Z97X Gaming 5 GPU: MSI GTX 970 Gaming 4G HSF: Cryorig R1 Ultimate
Mem: 2 x 8GB G.Skill TridentX DDR3 2400 SSD: Samsung 850 Evo 500GB + a few spinners
PSU: Seasonic SS-760XP Platinum Case: Fractal Design Define R5 Monitors: 2 x Dell 2007FP 1600x1200
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08-21-2014, 01:42 AM,
#9
RE: RAM for i7 4790K on Z97 mb
(08-20-2014, 11:32 PM)Dan-H Wrote:
(08-19-2014, 07:13 PM)Dan-H Wrote: <snip>... even though technically it is out of spec for Haswell?

... technically out of spec ?? where'd you get that crazy idea??? Blush

more web research found this: http://www.intel.com/content/www/us/en/g...e-xmp.html

http://www.intel.com/content/dam/www/pub...asheet.pdf

for my someday/maybe (soon?) build I may ignore the 1.5 vs 1.65 and look at price/performance and where to spend the money.

These are the two I have in my favorites.

http://pcpartpicker.com/part/gskill-memo...66c9d16gxm

http://pcpartpicker.com/part/gskill-memo...0c10d16gtx

$25 more for the 2400/10 vs the 1866/9

Hi Dan,

Okay, so the crazy idea comes from countless threads that I've read through suggesting the warranty could be voided, that going over 1.5v, while possible, could cause a shortening of life for the cpu and the report that at least some mb's indicate a limit of 1.5v. It seems like a lot of people are concerned enough to ask about (and report reading about) this spec being suggested by their mb or by Intel. I didn't find this information first hand.....just read concerns, reports and varied answers about the 1.5v spec. Now, I have disclosed I'm a newb....so any and all crazy ideas are possible...more will certainly come if you stay tuned! Tongue

As for the memory I came up with....I just chose what I think is the sweet spot...for my wallet...at 2133mhz. And...if I can do this and stay at 1.5v it seems a reasonable conclusion. The only thing that might make me go for a voltage above 1.5 is if I'm taught that doing so will not have an adverse effect and there is something to be gained...for example....something better than the Corsair Vengeance 2133mhz Cas10 1.5v kit mentioned previously. Or perhaps exceeding said voltage, to get a Cas9 memory, would be worth the higher voltage? Or perhaps there's something else to gain like reliability? Or perhaps there's absolutely nothing wrong with exceeding 1.5v and I should pick with no regard to this spec?

Fwiw....I did check out your link to the Intel site and found it to be over my head a bit. If I read correctly...overclocking is built in using XMP...and higher voltages are a normal part of this OC process...yes? Or maybe it's the motherboard manufacturers that suggest not exceeding 1.5v? Obviously I'm still confused.

Btw....is there anything wrong with Corsair memory...is GSkill a much better choice...or is it all about specs and price?
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08-21-2014, 02:36 PM,
#10
RE: RAM for i7 4790K on Z97 mb
Apologies if my response came across implying that I "know" anything in this area.

I only "know" what I'm reading, and what I read mislead me to believe that 1.5v was spec for Haswell and the XMP page on Intel's site clearly refutes that.

I can't really comment on brands. I've not used Corsair memory and don't know if one or the other is better or not from any personal experience.
CPU: Intel Core i7-4790K 4.7Ghz Mobo: Gigabyte Z97X Gaming 5 GPU: MSI GTX 970 Gaming 4G HSF: Cryorig R1 Ultimate
Mem: 2 x 8GB G.Skill TridentX DDR3 2400 SSD: Samsung 850 Evo 500GB + a few spinners
PSU: Seasonic SS-760XP Platinum Case: Fractal Design Define R5 Monitors: 2 x Dell 2007FP 1600x1200
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