DD3 1600Mhz CL7 vs 2400Mhz CL10

PullTheTricker

PullTheTricker

PullTheTricker

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Eventhough they were priced the same, I myself went for the 1600 CL7 because it runs at 1.5v max, whilst the 2400 CL10 runs at 1.65v. Anyone experienced can testify if there are differences or did I make the correct choice here?

Seeing Battlefield ram speed benchmarks shows significant perfomance improvement... but then according to LinusTechTip its all insignificant.
 
Ignore voltage and the whole "intel Sandybridge etc recommends 1.5V etc".

All good, decent RAM seems to use 1.65v and I have been using RAM with that rating of years without issue.

The 2400CAS10 sounds like the RAM to buy, I take it you have a suitable board+cpu to fully utilise it's speed.
 
stulid said:
Ignore voltage and the whole "intel Sandybridge etc recommends 1.5V etc".

All good, decent RAM seems to use 1.65v and I have been using RAM with that rating of years without issue.

The 2400CAS10 sounds like the RAM to buy, I take it you have a suitable board+cpu to fully utilise it's speed.
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I have a Z97 board from MSI (gaming 5 series) and a 4790k. But thing is, I allready have the 1600mhz CL7 currently, should I try to return it? I use G-Skill btw.
 
I'm glad its good... I could go trough the trouble to return but I don't see the point according to Linus there is like no difference.
And its 16gb... 2x8GB in dual channel to be exact.
 
So this quote from Anandtech, how relevant is this still today?

''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.''

Ouch, so my system was intended to be multi-gpu, SLI. Not sure if this quote from Anandtech about Haswell is still relevant today. But any perfomance gain of 4-5 fps would definitely be significant... for me anyway.

Then... there is also a Corsair study wich I totally do not trust. :p
 
Its still relevant, the thing is your 1600Mhz RAM timings are tighter (lower = better) than average.

So you could say equivalent to a higher speed RAM with more relaxed timings.
 
stulid said:
Its still relevant, the thing is your 1600Mhz RAM timings are tighter (lower = better) than average.

So you could say equivalent to a higher speed RAM with more relaxed timings.
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Guess I'm being a bit compulsive about it. But ye I dropped the ball when choosing the ram, when I saw a cheaper one at 2400Mhz CL9 Kingston HyperX Predator Beast 2x8GB. But other then that, my current ones are very stable, not sure if the change from 1.5v to 1.65v could affect that, but I did see some horror stories on the internet with people combining the 4790k with something called ''xmp profiles''.
Even after watching many benchmarks across the net, I am still wondering if there is any significant benefit to it. Most of the positive benchmarks are a little biased.
 
If you buy a 2400Mhz kit and fit it to a board without doing anything tot he BIOS it runs at 1333Mhz usually.

The Ram will have a little chip on them that stores the XMP profile, you go into the BIOS, load the XMP profile, the board reads the data on the RAM and sets up the speed/timings and voltage as stored on the RAM, save+exit and bingo your RAM should now be at its tested and rated full speed "XMP profile".
 
So I just oc'ed my memory kit manually, and want to know if I just went YOLO mode, or its actually safe?
From 1600Mhz CL7 8-8-24 at 1.48v to >>> 2400Mhz CL10 11-11-30 at 1.53v. So far seems stable to me.
If its of any relevance, my 4790k is @ 4.8 Ghz and 1.225v. I don't want to risk the lifespan of any hardware that may be affected by oc'ing the memory.
 
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new boy said:
You will be fine. 1.53v is low. You wont damage it or any other hardware.
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Thats great to know, thanks!
Makes me wonder if they just factory oc the 1600mhz ram sticks out of the box and advertise it as ''faster'' 2400mhz... I'm no expert, but it seems its both the same when both can get any desired frequency or latency at their same settings. Wich I guess explains why the price has no difference between the 1600mhz cl7 or 2400mhz cl10, both same price.
 
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G-Skill don't make Ram ICs. Someone like hynix or elpida does. The ICs on the 1600 c7 sticks may well be the same as on the 2400 c10 sticks. Maybe the 2400mhz sticks use better binned ICs, maybe not.

1600 c7 is damn tight, so its not very surprising it will clock higher when you loosen up those timings.
 
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