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Found 3 results

  1. Hi everyone, I ordered a double pack of Corsair RAM (Corsair MacMemory CMSA16GX3M2A1600C11 Kit 16 GB/ (2x8 GB), DDR3L, 1600 MHz, Apple Certified, SODIMM) from Amazon lately. Today I received the product. And I am not sure whether I have got what I wanted. The front of the package is labelled DDR3L but on both RAMs themselves are labelled DDR3 ! I have also attached pictures. Are they actually DDR3? Has anyone come across this and can you give me some light? If they are DDR3, I am going to contact Amazon to return them as I wanted DDR3L. Thank you in advance. Bon
  2. IntroductionWith Intel’s 6th Generation Core processors – code-named Skylake – now out in the wild, we have an opportunity to directly compare DDR3 technology against DDR4. On paper, DDR4 is certainly more exciting: DDR3L offerings for Skylake stop at 2133MHz, while DDR4’s clock ceiling just keeps rising. The question now isn’t just whether or not DDR4 offers an appreciable improvement over DDR3L for Skylake users, but whether it’s price-performance competitive. Comparing Price Points The modern memory minimum for enthusiasts and gamers is really 16GB. 8GB is fine for most games, but there are newer games that have issues with that low amount, and more are expected to emerge. Dual 8GB DIMMs tend to be the best for price and for performance, so let’s compare how expensive our Vengeance DDR3L kits are to our Vengeance LPX DDR4 kits. DDR3L Price Point DDR4 16GB 1600 MHz $85 $90 16GB 1866 MHz $95 16GB 2133, 2400, 2666 MHz $100 16GB 2133 MHz $120 16GB 3000 MHz DDR3L is still our low price leader, but DDR4 is already extremely price competitive, and when we look at price-performance you’re going to see why most vendors are treating Skylake’s DDR3L support essentially as “legacy.” Also, remember that DDR3L is functionally identical to DDR3, it simply runs at a lower voltage. Testing Configuration We used the following system configuration to test performance: CPU: Intel Core i7-6700K @ 4.6GHz Motherboard: DDR3L: ASUS Z170-P D3 DDR4: ASUS Z170-DELUXE DRAM: DDR3L: 4x8GB Corsair Vengeance Pro DDR3L-2133 DDR4: 4x8GB Corsair Dominator Platinum DDR4-2800 Graphics Card: NVIDIA GeForce GTX 980 Storage: 480GB Corsair Force GT SSD CPU Cooler: Corsair Hydro Series H110i GT Power Supply: Corsair AX1200i Enclosure: Corsair Carbide Series Air 540 We then used these kits to test scaling down to 1600MHz C9 on the DDR3L and down to JEDEC (2133MHz C15) for DDR4. Overall Performance First, we’ll look at synthetic memory bandwidth tests just to get a feel for how the technology compares on a one-to-one. Raw memory read/write bandwidth is ever so slightly lower on DDR4 than it is on DDR3 at the same speed, but try to remember that DDR3’s entry level is actually 1600MHz. The real question and concern most users have when it comes to DDR4 is the higher latency, but as it turns out, this isn’t a very significant issue. DDR3-1600 has higher latency than any DDR4 on the market, while DDR3-2133’s latency is only marginally lower than DDR4-2400. Right away I’ll say that in practical game testing – including testing with the integrated graphics – Skylake just doesn’t seem to benefit substantially from faster memory. This may change with DirectX 12, but modern games seem to be more capacity intensive than speed intensive. However, for any kind of multimedia work, memory speed becomes much more relevant. Unless you’re running DDR3-2133, DDR4 is going to be consistently faster across the board, although its advantage does wane fairly early on. The difference isn’t staggering, but it’s measurable. The same trend occurs with Adobe Premiere CC and Adobe Media Encoder, though more pronounced. DDR3-1600 is just too slow for Skylake and leaves significant performance on the table. Finally, our baseline for the price-performance metric. PCMark 8’s Adobe Suite is consistently faster on DDR4 and continues to scale up gradually with each speed grade. The crux is that there’s a very modest performance delta between DDR3-2133 and DDR4-2133, but it’s negligible and easily remedied by just going up a single speed grade on DDR4. Price-to-Performance Now that DDR4 has hit essentially mainstream pricing, DDR3L’s price advantage has become negligible. At the time of this writing, 16GB of DDR4-2666 can be had for the same price as 16GB of DDR3L-1866, and the same amount of DDR4-3000 can actually be had for less than the same amount of DDR3L-2133. While higher speed memory tends to be less of a value than lower speed – that’s just been historically true – it’s worth noting that DDR4 gives you more performance-per-dollar over any DDR3 speed grade except for 1600MHz. And the flipside of DDR3-1600 is, as you saw earlier, a notable performance hit. Conclusion We’ll be continuing to test DDR4 against modern games as they come out, but regardless of performance scaling in games, DDR4 ends up being faster in virtually any other task than DDR3 and is a better price performer than the DDR3L needed to run Skylake. Users building new rigs with Skylake CPUs should really only be considering DDR4 and the associated boards.
  3. As mobile and other low-profile platforms are driving power consumption lower and lower, standard voltage DDR3 isn’t cutting it for many systems anymore. JEDEC introduced DDR3L; it’s DDR3 with the spec voltage reduced from 1.5V to 1.35V. On the desktop, saving a couple of watts here or there doesn’t make a huge difference, but in systems that are already fairly frugal with their power consumption and carving out longer running time any way they can, the reduction in voltage is welcome and necessary.To that end, we have available ValueSelect, Vengeance, and Mac Memory DDR3L memory kits for notebooks and Vengeance DDR3L memory kits for the desktop that are specced to run at the requisite 1.35V. These are available in speeds of 1333MHz and 1600MHz. Below is a reference table for each of our SODIMM SKUs: BRAND CAPACITY SPEED CAS SKU Mac Memory 16GB (2x8GB) 1600MHz 11 CMSA16GX3M2A1600C11 Mac Memory 8GB (1x8GB) 1600MHz 11 CMSA8GX3M1A1600C11 Vengeance 16GB (2x8GB) 2133MHz 11 CMSX16GX3M2B2133C11 Vengeance 8GB (2x4GB) 2133MHz 11 CMSX8GX3M2B2133C11 Vengeance 16GB (2x8GB) 1866MHz 10 CMSX16GX3M2B1866C10 Vengeance 8GB (2x4GB) 1866MHz 10 CMSX8GX3M2B1866C10 Vengeance 16GB (2x8GB) 1600MHz 9 CMSX16GX3M2B1600C9 Vengeance 8GB (2x4GB) 1600MHz 9 CMSX8GX3M2B1600C9 ValueSelect 8GB (1x8GB) 1600MHz 11 CMSO8GX3M1C1600C11 ValueSelect 8GB (2x4GB) 1600MHz 11 CMSO8GX3M2C1600C11 ValueSelect 4GB (1x4GB) 1600MHz 11 CMSO4GX3M1C1600C11 ValueSelect 16GB (2x8GB) 1600MHz 11 CMSO16GX3M2C1600C11 ValueSelect 8GB (1x8GB) 1333MHz 9 CMSO8GX3M1C1333C9 ValueSelect 4GB (1x4GB) 1333MHz 9 CMSO4GX3M1C1333C9 Our desktop users aren’t left out in the cold either, though. These are the DDR3L desktop kits we have available: BRAND CAPACITY SPEED CAS SKU Vengeance (Gold) 8GB (2x4GB) 1600MHz 9 CMZ8GX3M2A1600C9G Vengeance LP (White) 8GB (2x4GB) 1600MHz 9 CML8GX3M2A1600C9W So why go with DDR3L instead of conventional DDR3? Simply put, many Bay Trail and Haswell-based systems simply won’t accept 1.5V DDR3. If you try to use regular DDR3, those systems will fail. This includes variants of the Gigabyte Brix and the Intel NUC. Systems that support conventional 1.5V DDR3 should have no trouble running DDR3L, but this compatibility doesn’t go the opposite direction; systems built around DDR3L are typically going to require DDR3L. So how do you know which speed of DDR3L your system can handle? Memory speed compatibility is typically governed by the processor your system has. Note that installing memory that’s faster than what your processor is specced for won’t necessarily cause problems, but the memory will only run as fast as the processor itself allows. The chart below should give you a clear idea of what memory speed is best for your system, just match the model number of your CPU! CPU Model Maximum Memory Speed Supported Intel Core i7-2*** (quad-core only) 1600MHz Intel Core i3-3***, i3-4***, i5-3***, i5-4***, i7-3***, i7-4*** 1600MHz All other Intel chips 1333MHz AMD A4-3***MX, A6-3***MX, A8-3***MX 1600MHz AMD A4-4300M, A6-4400M, A8-4500M, A10-4600M 1600MHz AMD A4-5***M, A6-5***M, A8-5***M, A10-5757M 1600MHz AMD A10-5750M 1866MHz All other AMD chips 1333MHz Looking at this chart should give you an idea of what to go for; generally speaking, DDR3L-1600 should be just fine as it’s the most common. Note also that 4th generation Intel i5 and i7 processors in gaming systems (typically from Alienware, Clevo, ASUS, or MSI) may support speeds of 1866MHz or higher; these are the systems that our ultra high speed Vengeance kits are for. You’ll want to double-check with the manufacturer first in those cases, though.
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