Corsair is a well-known manufacturer of PC components, including DRAM, chassis, power supplies, USB storage, fans, SSDs, gaming peripherals (keyboards, mice, headsets) and cooling, among others.  Today we are looking at some of their mid-to-high range memory from their Vengeance Pro range, designed to cater for extreme system builders with DDR3-2400 CAS 10 speeds.  This also happens to be the memory we have been using for Haswell motherboard reviews.

Corsair Vengeance Pro 2x8GB DDR3-2400 C10 1.65V Overview

Corsair has been a long time player in the DRAM market, along with Kingston, Crucial and a few others.  Several years ago you were hard pressed to find anyone in the PC building business who would not recommend Corsair – it was very often the case that the big names make the big bucks.  Despite this, a recent trend among overclocking enthusiasts has developed pushing away from the big names to focus on the newer brands that are more adventurous with their module binning and aggressive with their pricing.  Corsair products still hold #2 and #3 spots in terms of user choice, with ~20% of users deciding to test their system with a Corsair memory kit.

In the case of memory, as reliability rates now are extremely high for anyone not overclocking, there are several main battlegrounds: warranty, price and aesthetics.  Beauty is supposedly in the eye of the beholder – some users care about the look of the memory fits into their system, whereas others will enjoy a low price to spend another $20 on something else in the system.  Corsair’s Vengeance Pro Series comes in several colors (red, blue, silver, gold), and this particular red kit is not available on Newegg (the 2400 C11 kit does, at $220), but does feature on Corsair’s website for $230.  Unfortunately for Corsair, Newegg lists a 2x8 GB 2400 C10 kit for $150 (reduced from $170) for sale, alongside a $280 2400 C10 Dominator Platinum kit, and there are plenty of 2400 C11 kits around the $150 mark, suggesting that an $80 bump in pricing for the CMY16GX3M2A2400C10R is actually a large stretch in a system build for what are small (if any) gains at most.

In terms of our testing, Corsair supplied us with a pair of kits, and thus we tested 2x8 GB and 4x8 GB configurations.  Note that this is not a recommended scenario – memory kits, even listed as the same timings and modules, are not guaranteed to work with each other.  When you add density, timings have to be slackened to compensate, which is not taken account for when buying two kits.  Only a full on 4x8 GB kit is guaranteed to work in this context – there are plenty of posts on the ROG forums with issues relating to users attempting to put two memory kits together.  Our CPU is a good clocker and the modules we received had some headroom such that we did not experience any issues, but your mileage may vary.

2400 C10 does hit a nice sweet spot in our testing, and our kit even overclocked to 2400 C9, representing a lift in Performance Index from 240 to 267 at the 2400 MHz boundary (2600 C10 was not possible though).  But for the price, Corsair are resting on their laurels with the name of the brand being what carries them through, especially with system builders.


  ADATA Corsair Patriot ADATA G.Skill
Speed 1600 2400 2400 2400 2800 3000
ST 9-11-9-27 11-13-13-35 10-12-12-31 10-12-12-31 12-14-14-36 12-14-14-35
Price £125 $200 $230 $92 $316 $520
XMP Yes Yes Yes Yes Yes Yes
Size 2 x 8GB 2 x 8GB 2 x 8GB 2 x 4GB 2 x 8GB 2 x 4GB
178 218 240 240 233 250

MHz 1600 2400 2400 2400 2800 3000
Voltage 1.35 V 1.65 V 1.65 V 1.65 V 1.65 V 1.65 V
tCL 9 11 10 10 12 12
tRD 11 13 13 12 14 14
tRP 9 13 13 12 14 14
tRAS 27 35 31 31 36 31
tRC 38 46 61 43   49
tWR 12 20 20 16   16
tRRD 280 315 315 301   391
tRFC 5 6 10 7   7
tWTR 6 10 10 10   12
tRTP 6 10 10 10   12
tFAW 24 33 46 26   29
CR - 2 2 3   2

2400 C10 already comes out high on the Performance Index scale at 240, although based on the subtimings here we can see that the tRFC and tRC are actually very loose, compared to the Patriot (2x4GB) and ADATA (2x8GB C11) kits we have tested.  Typically tRFC is a timing that helps with benchmark results and needs to be low to be the best, but at 10 we are not going to set any records here.  Interestingly enough the ASRock Z87 OC Formula gives the XMP primary timings as 10-13-13 rather than the 10-12-12 listed on the modules.

Visual Inspection

In a trend that I like, memory manufacturers are making their kits easy to get in to.  Similar to one of our previous memory reviews, Corsair places their modules in an easy to open plastic clamshell, which in turn comes in a card-like packaging which shows the module details through a transparent window.

There is a sizable addition in z-height to the modules, which will impact some large coolers including my TRUE copper when mounted for airflow bottom-to-top.

Market Positioning, Test Bed, Kit Order
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  • UltraWide - Friday, December 13, 2013 - link

    On this page:

    What are the exact voltages each timing/subtiming? You only list the subtimings and peak MHz, but no voltages.
  • JoannWDean - Saturday, December 14, 2013 - link

    my buddy's aunt earned 14958 dollar past week. she been working on the laptop and got a 510900 dollar home. All she did was get blessed and put into action the information leaked on this site...
  • teiva - Thursday, January 2, 2014 - link

    My pet cat's been earning $14823 a month just by eating Whiskas biscuits dipped in cream from albino goats that only sleep in a northerly direction lol
  • jeffrey - Friday, December 13, 2013 - link

    Ian Cutress,
    Hello! This is another article stating 1866/C9 being the minimum for Haswell and to avoid 1600 or less. Even going so far as to say, "Any kit 1600 MHz or less is usually bad news."

    However, this ignores 1600/C8 modules. The 1600/C8 score a 200 on your Performance Index at stock timings. This is at your recommended 200 level. There are several kits of 2x4 GB 1600/C8 on Newegg that have memory profiles of 8-8-8-24 at 1.5v. I'll repeat, these 1600 8-8-8-24 1.5v kits score 200 on the Performance Index and hit the current memory sweet spot for most people of 2x4 GB. This scores within around 3% of the 1866/C9 kits which have a Performance score of 207.

    The reason I bring this up is that the 1600 8-8-8-24 kits are often less expensive than the 1866/C9 kits and offer essentially all of the performance.

    I enjoy reading your articles and appreciate how active you have been lately!
  • jeffrey - Friday, December 13, 2013 - link

    Here is an example of a great value for a 2x4 GB kit. This item has 500+ positive reviews and normally sells out when it goes on sale (as it is now).

    1600 MHz 8-8-8-24 1.5V
  • fractal9 - Friday, December 13, 2013 - link

    Where in the article does it state this? These days I want the most compatibility and reliability, and that means being in the JEDEC standard and at 1.5v. I don't care about a few extra fps or synthetic performance figures, I'll save my $80 and enjoy increased stability.
  • Senti - Friday, December 13, 2013 - link

    "we are not going to set any records" with tRFC at 10? lol, sure we would! Do you actually understand the timings you are writing about? Real tRFC is the line above where the numbers are near 300. Now we have huge table of timings that is totally useless because we can't trust it at all...

    Btw, your spam filter is awful – looks like it blocked my (dynamic) IP for unknown reason.
  • Hairs_ - Friday, December 13, 2013 - link

    Oh dear god. Not this again. It is time for a thorough debunking, based on the data presented, because clearly it is not going to stop.

    Established from Anandtech's own testing data:
    There is no distinguishable, patternable difference between 8GB and 16GB memory kits. In some cases, there is a swing one way or the other, but nothing is consistent.
    I think that most enthusiasts would recommend, if asked by a friend on a midrange budget, a 1600 8gb kit. The lowest price for that at C9 timings on newegg is $55. Not the $150 - 250 being bandied about for these moronic kits.

    An 1866 C9 16GB kit comes in at ~$115. (It is safe to assume that *some* kit will always be on offer.)

    So let's look at the conclusive data:

    From all the graphs, we can conclude the difference between the Best "stupid" kit and a reasonable 1600 c9 kit is:

    Average 2.78%
    Max 13.27%
    Min 0.00%

    The best results for the stupid kits are:
    13.27% running Explicit Finite Solver (3d only, the 2d result was 3.3%) on an IGP. Anyone running this is not using an IGP to do it, I suspect.
    12.91% on USB3 copy. The page for those results states they are pulled from the Motherboard reviews, so there's no indication this speed isn't motherboard specific rather than memory specific (as some AsRock boards have USB boost which allegedly seems to work). One result on this same test had a 34.55% lead, but it had the same lead (or larger) on "faster" kits than the 1600 kit, so I am treating this as an outlier.

    The vast majority of the results are just not in the stupid kit's favour.

    Test Difference Best Stupid Kit 1600 C9 Kit Testing
    Graph 1 5.67% 12.86 12.17 IGP
    Graph 2 1.66% 9.2 9.05 IGP
    Graph 3 4.65% 9 8.6 IGP
    Graph 4 1.29% 105.39 104.05 Direct
    Graph 5 1.47% 62.94 62.03 Direct
    Graph 6 1.28% 47.4 46.8 Direct
    Graph 7 0.41% 49.55 49.35 Direct
    Graph 8 3.14% 212.5 206.03 Weird triple unbalanced which won't ever occur
    Graph 9 3.13% 123.93 120.17 Weird triple unbalanced which won't ever occur
    Graph 10 1.04% 91 90.06 Weird triple unbalanced which won't ever occur
    Graph 11 5.86% 113.85 107.55 Weird triple unbalanced which won't ever occur
    Graph 12 1.00% 54.834 55.383 CPU - From MOBO reviews so no indication if same testbed was used
    Graph 13 12.91% 47.33 53.44 CPU - From MOBO reviews so no indication if same testbed was used or if MOBO had USB speed boost.
    Graph 14 0.00% 47 47 CPU - From MOBO reviews so no indication if same testbed was used
    Graph 15 1.56% 64 65 CPU - From MOBO reviews so no indication if same testbed was used
    Graph 16 3.71% 190.32 183.51 CPU - From MOBO reviews so no indication if same testbed was used
    Graph 17 1.23% 49.57 48.97 CPU - From MOBO reviews so no indication if same testbed was used
    Graph 18 2.13% 4.8 4.7 CPU - From MOBO reviews so no indication if same testbed was used
    Graph 19 0.10% 132.06 131.93 CPU Compute
    Graph 20 1.59% 755.04 743.25 CPU Compute
    Graph 21 0.01% 38.793 38.791 CPU Compute
    Graph 22 0.45% 1354 1348 CPU Compute
    Graph 23 1.32% 613 605 CPU Compute
    Graph 24 1.33% 152 150 CPU Compute
    Graph 25 3.31% 1780 1723 IGP Compute
    Graph 26 13.27% 222 196 IGP Compute - Explicit Finite Difference Solver (3d), not something going to run on an IGP…
    Graph 27 2.49% 150.653 146.993 IGP Compute
    Graph 28 1.93% 50.731 49.769 IGP Compute
    Graph 29 2.60% 7103 6923 IGP Compute
  • Hairs_ - Friday, December 13, 2013 - link

    The "Weird triple unbalanced" above refers to the idea that there is some lunatic out there running a 4 generation old Dual GPU card in crossfire with a different, single GPU from the same generation but a different spec. This is referred to as "esoteric" but I think it's safe to assume that the only person doing this is someone who has video cards sitting in a pile next to a testbed because they're a video card reviewer.

    Suffice to say I don't think this test is representative of any real world use pattern, but then neither are a lot of the tests where the stupid kits "shine" (if you can call 12% advantage for a 300% price premium "shining").
  • fluxtatic - Saturday, December 14, 2013 - link

    The 5970 and 5870 are the same GPU. It might have been interesting to see if downclocking the 5870 to match the 5970 made any difference, but this isn't as odd as you seem to think. I would guess a 3- or 4- card tri- or quad-Crossfire setup would be less common, given that it isn't easy to find motherboards that can take 3 or 4 dual-slot cards.

    It's slightly skewed in that the setup is current-gen other than the video cards, but it is similar to the way quite a few people build. They don't necessarily build a brand-new box every couple years, but replace modularly - I went from an AM3 board with an Athlon64 processor to a PhenomII, to an AM3+ board (which necessitated a RAM upgrade), then replaced the video card twice. My video card is 3 generations old, but handles what I play just fine, so next time around will be another processor upgrade.

    Intel-land is a little different, since they change sockets more frequently and a lot of people didn't see it worth the expense to upgrade when there was socket compatibility (SB -> IB, for example), but this setup doesn't strike me as that unusual. If I dropped the kind of money it takes to get a triple Crossfire setup, I'd hang onto it until the games I played started to overwhelm it.

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