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Overclocking And Bandwidth

Five Overclockable 32 GB DDR3 Kits, Reviewed
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We were really surprised that G.Skill didn't send in one of its Trident DDR3-2933 quad-channel kits to take on Corsair’s top-market Vengeance Pro. Unfortunately, a top data rate of DDR3-2600 isn’t going to help the firm win in this overclocking competition.

So, why would a company that does sell a DDR3-2933 kit submit one of its DDR3-2400 offerings for today’s round-up? Perhaps because I said there would be a performance comparison, and G.Skill knew something I didn’t about how this platform would deal with higher data rates.

The top three bandwidth numbers are established at DDR3-2400 settings. Data rates beyond DDR3-2400 require longer secondary timings, and the motherboard responds with looser tertiary timings.

Additional testing confirms that memory bandwidth continues to climb with higher data rates applied to locked-in DDR3-2400 timings, and that DDR3-2400 bandwidth drops to 25 GB/s when manually configured to DDR3-2666 timings. "Best Timings" in the chart labels only refer to the use of optimized primary timings discussed on the previous page.

I kept playing with the timings of Corsair’s top-overclocking modules until I hit 30.4 GB/s at DDR3-2800. That’s still a little short of the DDR3-2400 numbers, but it’s a clear indicator that secondary and tertiary timings are an issue for the Sandra Memory Bandwidth test using Asus’ Z87-based motherboard.

Display all 30 comments.
  • 1 Hide
    jasonelmore , May 20, 2014 12:06 AM
    I've had the Gskill Kit for over a year now and i love it. All these other kits are late to the party.

    I use mine for RAM DISK, which is a Asus Program that lets me install games to my RAM and have nearly instant loading times. 10,000 Mbps, where as the fastest m.2 PCIe ssd's will only do 1/10th that.

    I cant wait for Broadwell because i need 64GB so i can put a full Battlefield 4 install (42GB and going up with each expansion) on it.

    Whats great is the asus RAM DISK program can move the installation freely without you having to mess with the registry or installation directory settings.
  • 0 Hide
    jasonelmore , May 20, 2014 12:08 AM
    also the Gskill kit is Quad Channel Compatible. i know it's up to the chipset to set channels, but some kits wont work quad channel.
  • 8 Hide
    s3anister , May 20, 2014 12:18 AM
    @jasonelmore RAM disks have been around for ages and is not an exclusively ASUS thing. Also if you actually NEED that much space on a RAM disk then you'd be better served by using an LGA2011 platform since you could easily drop 64GB in it.
  • 0 Hide
    Amdlova , May 20, 2014 12:45 AM
    i have used g-skill on my last 3 builds and work hard. never get an blue scren. but with corsairs i lost my count. i prefer use kingston value ram to buy corsair memory again
  • 1 Hide
    Crashman , May 20, 2014 1:29 AM
    Quote:
    also the Gskill kit is Quad Channel Compatible. i know it's up to the chipset to set channels, but some kits wont work quad channel.
    All of these kits are designed for Quad-Channel mode, but the Quad-Channel CPUs we have won't push the high data rates needed for a memory overclocking evaluation.

  • 2 Hide
    jasonelmore , May 20, 2014 2:32 AM
    Quote:
    @jasonelmore RAM disks have been around for ages and is not an exclusively ASUS thing. Also if you actually NEED that much space on a RAM disk then you'd be better served by using an LGA2011 platform since you could easily drop 64GB in it.


    The connectivity on LGA 2011 is behind quite a bit. I'd rather have faster IPC, and more than 2 native sata 6g. I wish intel would not keep it's enthusiast line a year behind in tech.
  • 2 Hide
    mapesdhs , May 20, 2014 2:48 AM

    I've used a lot of GSkill kits, they're very good, but one thing surprises me about
    the choice, namely the absence of the GSkill TridentX kit. I find it's more stable
    than the Ripjaws series, especially in max-RAM configurations with 32GB on Z68,
    or 64GB on X79, etc. I wonder why GSkill chose to supply the RipjawsX... I was
    going to say maybe it was just price, but TridentX is cheaper now, at least in the
    UK anyway, but even if it cost more I'd still always recommend the TridentX if a
    buyer can afford it. Note the TridentX is CL10 vs. the RipjawsX's CL11. Here's my
    config with two TridentX 2400 kits, set for the moment at 2133 as that was my
    target speed (at the time it was cheaper than buying native 2133 kits, and I've
    not had a chance yet to optimise at 2400):

    http://valid.canardpc.com/r9ibvb

    Ian.

  • 3 Hide
    Vlad Rose , May 20, 2014 6:17 AM
    I have been using G.Skill RAM since the early days of the Athlon when no one had heard of the company. It has always been rock solid for me and have had great luck overclocking it over the years.
  • 0 Hide
    kyle382 , May 20, 2014 6:59 AM
    good gravy those are some hideous looking sticks.
  • -5 Hide
    damric , May 20, 2014 8:52 AM
    I can run my G.Skill 2133CL10s at 2500CL10 rock solid on an Athlon 760K so suck it, intel!
  • 3 Hide
    shogunofharlom , May 20, 2014 10:58 AM
    I GOT A G SKILL 32GB 1866 KIT FOR $109 TWO YEARS AGO FROM THE EGG! BEST DEAL EVER! It will be a looooong time till I buy new ram.
  • 0 Hide
    spookyman , May 20, 2014 11:12 AM
    So what was wrong with Adata?
  • 0 Hide
    Crashman , May 20, 2014 1:06 PM
    Quote:
    So what was wrong with Adata?
    There's nothing wrong with it, they just shipped two pair rather than a set of four, in a comparison of four-module kits, and the resulting combination didn't leave any room for overclocking. Corsair got an award for overclocking, G.Skill got an award for value, and there wasn't any "in the middle" award.

  • 1 Hide
    Sabishii Hito , May 20, 2014 1:28 PM
    Ironic that all these kits use the same ICs (Hynix H5TQ4G83MFR).
  • 0 Hide
    anbello262 , May 20, 2014 5:06 PM
    I also use Gskill, and I have been able to set my 1600CAS9 sticks to 2133CAS11, and that really showed a HUGE improvement for my APU :D 
  • 0 Hide
    JackNaylorPE , May 21, 2014 7:20 AM
    Enjoyed seeing Mushkin Redlines in ya last roundup (THG Elite Award) and disappointed they didn't participate this time around. The 10-12-12-28 timings are the best I have seen outta the package. The Blackline series also has slightly tighter timings at 2800 with 12-14-14-35

    Redline 2400 CAS 10 = 8.33 ns
    Vengeance 2800 CAS 12 = 8.57 ns




  • 2 Hide
    WyomingKnott , May 22, 2014 6:24 AM
    If I read the chart on page 9 correctly, most memory runs higher bandwidths at the stock settings than overclocked. Am I misreading something?
  • 0 Hide
    junkeymonkey , May 22, 2014 7:12 AM
    WyomingKnott--

    were you once or still doing the jonny guru bit? where do I remember you from?

    I like my gskills but with any brand theres good and bad on how you board takes to them some can be finicky..
  • 0 Hide
    WyomingKnott , May 22, 2014 7:17 AM
    ?? Jonny Guru ?? I was never over there. Sorry.
  • 0 Hide
    junkeymonkey , May 22, 2014 7:21 AM
    my mistake then sorry.... just seemed like I seen WyomingKnott on some other tech site.. my bad
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