Center. I have an HP notebook which only has USB 3. Multiple factors affect RAM compatibility, one of which is brand differences. 5v, but 1. Just making sure, so if it isn't, he can save up for buying both the new mobo and ddr3. the 1600 ram out there can have 9 10 or 11 for timings. Here’s what to expect from each game, are ddr3 slots backwards compatible. You will have to have a motherboard with DDR5 slots. Is a mobo that supports DDR3, backwards compatible with DDR2 memory? Since they both have the same 240-pin setup. The notch on DDR2 DIMMs is in a different position than DDR DIMMs, and the pin density is slightly higher than DDR DIMMs. PC3-12800 is exactly the same as DDR3-1600. In other words, if you buy a 2666 MHz memory module, and the motherboard can only support 2133 MHz, the memory will go down to 2133 MHz. SDRAM runs synchronized with the system clock d. 3. Pretty much the only thing that DDR3 seems to be better at is backwards compatibility with older generations of RAMs. . 5V) SDRAM. 45V) • Backward compatible to VDD = VDDQ = 1. It really doesn't matter. 45V) • Backward compatible to VDD = VDDQ = 1. DDR3L is a dual voltage capable memory SoDIMM, which supports operation at both 1. 35V (1. 0 slots or Thunderbolt 4 are out of the question. 6 Ghz RAM, it became as smooth as new. 35V (1. Microsoft is one of the few game companies that has been willing to invest so heavily in legal video game preservation, either by emulation with the Xbox 360 backward compatibility emulator on. DDR3 and DDR2 are designed differently. 2. The Cave. Ddr3 and ddr2 same slot Ddr3 […]Kit of two 4GB PC3-10666 DDR3 matched memory modules. Socket AM3 is a CPU socket for AMD processors. These processors aren't backward compatible with motherboards based on Intel® 200 Series Chipset and Intel® 100 Series Chipset. Quoting wikipedia:. It is also known as “Downward compatibility”. DDR3 RAM uses a. If you have a huge library of PS4 games, then you can happily play them on PS5 as well. User rating, 4. Is my TOSHIBA Satellite A665-S517 compatible? Mine has PC3-8500 DDR3-1066 204pin SDRAM SO – Learn about CORSAIR - VENGEANCE Series 16GB (2PK 8GB) 2400MHz DDR4 C16 So-DIMM Laptop Memory - Black with 1 Answer – Best Buy. 1. Basically you can use either. They are not backwards compatible. DDR3 is an older memory technology with lower bandwidth and higher latency, while DDR4 offers improved performance, lower power consumption, and higher data transfer rates. This model of DDR RAM is not backward compatible with the older generation’s RAM. DDR3 RAM has a 240-pin interface. S 02/16 EN 1Also is DDR3 backwards compatible with DDR2? At this point there is no price difference that I've noticed so should I buy DDR3 memory? zisforzorro, Jul 20, 2011 #5. Generally speaking yes. This model of DDR RAM is backward compatible with older RAM generations. The simple answer is, yes. Sort by date Sort by votes Tradesman1 Legenda in Aeternum. DDR4 and DDR3 have key notches in different places on the DIMM to prevent them from being mixed up, and Haswell-E and X99 are DDR4 only. The module will be designed to support both standard- and LP- DDR3 and DDR4 DRAM chips. 35V) SDRAM is a low voltage version of the DDR3 (1. Given its lack of backward compatibility, you can't fix it on a DDR3, DDR2, or DDR slot. DDR4 vs DDR3 DIMMs. DDR3L is a dual voltage capable memory SoDIMM, which supports operation at both 1. Socket AM3 is a CPU socket for AMD processors. 5V power, DDR2 needs 1. Q: How does XMP work on DDR4?Business, Economics, and Finance. $5. Features: SODIMM Type: 204-Pin Dual In-Line Memory Module Ultra-Low Power Optimized, 1. DDR3: DDR3 is a single voltage capable memory SoDIMM, which supports 1. Sep 9, 2008. Double Data Rate 3 Synchronous Dynamic Random-Access Memory is a type of synchronous dynamic random-access memory with a high bandwidth interface, and has. nullable. 0 x16 slot, your PCIe 1. The graphics card doesn't use your ram slot, it uses the PCI-Express slot. 45V) • Backward compatible to VDD = VDDQ = 1. PC100 memory — which Crucial no. Not backwards compatible! Channel Architecture. DDR4 is not backward-compatible with DDR3 so a DDR4 DIMM will not fit on a DDR3 DIMM slot. "DDR4 RAM is not backwards compatible with DDR3 motherboards and vice versa. 5 V and 1. Charlie and the Chocolate Factory. The problem is; if this is backwards compatible, then when the inevitable remaster comes around, it will likely skip Xbox and just go to Nintendo and Sony as has been the case with a few games recently (e. Business, Economics, and Finance. danbsanction. In other words, if you buy a 2666 MHz memory module, and the motherboard can only support 2133 MHz, the memory will go down to 2133 MHz. 24. It brought about substantial improvements compared to its predecessor, DDR3, in terms of data transfer rates, efficiency, and power consumption. 35V. Also what size PSU do you have installed?As DDR4 will only work in motherboards that are compatible with DDR4, and DDR3 will only fit in motherboards that are compatible with DDR3. DDR4. 1. 5V and 1. Features •V DD = V DDQ = 1. After all, there is no guarantee that a DDR3 SDRAM module will support all lower speeds in the JESD79 standard. 8GB (2x4GB) DDR3 Sodimm kit for 2nd Generation Intel Core i5 and i7 notebooks ; 1600MHz ; 9-9-9-24 latency ; 1. Aug 7, 2008. The “highest” I’ve seen is the Gigabyte Z690 Pro DDR4 & Aero G DDR4, the MSI MPG Edge DDR4 & MAG Tomahawk DDR4, or Asus. 4Gb: x8, x16 Automotive DDR3L-RS SDRAM Description PDF: 09005aef85bd2a38 4Gb_auto_1_35v_ddr3l_rs. Backward compatible to 1866, CL = 13 (-107). DDR3L is a dual voltage capable memory SoDIMM, which supports operation at both 1. e. As a result, DDR SDRAM is not backwards compatible with SDR SDRAM. DDR3 motherboards still available? The answer is yes! DDR3 motherboards are still on the market and will likely stay on the market for years to. What causes problems are laptops meant to run DDR3L having DDR3 sticks instead. . This gives you the flexibility to easily upgrade the speed of your machine. Refer to the DDR3 (1. Taking CKE LOW provides PRECHARGE POWER-DOWN and SELF REFRESH operations (all. Refer to DDR3 (1. , adjusted for the reduced. Answer No. 5 volts as your system does not offer a low voltage. 65v. The DDR3 memory chips offer higher bus clock speed and capacity and consume less power than a DDR2 RAM. , DDR 2, DDR 3, and DDR 4, a motherboard is NOT backward compatible. PC 10600(1333mhz) is backwards compatible with PC 8500 (1066mhz). Why is DDR5 not backwards compatible? RAM compatibility is powered by the installed CPU and installed motherboard. DDR3 is a type of DRAM (dynamic random-access memory) released in June 2007 as the successor to DDR2. Unlike DDR2, DDR3 doesn't offer forward or backward compatibility with earlier RAM versions because of different factors like timings and signaling voltages. DDR3 and DDR3L are socket compatible, however, It is NOT compatible with computers using 4th Generation Intel (Haswell) processors, which exclusively support 1. Ddr3 and ddr3l are two types of ddr3 sdram, which. DDR3L is also pin-compatible with DDR3! DDR3 is a single voltage capable memory DIMM, which supports 1. These RAM sticks require a lower voltage than Intel’s DDR3 and have increased power efficiency. DDR3 is not backwards compatible with DDR2. In the future. 075V – Supports DDR3L devices to be backward com-patible in 1. Step 2: Choose the right method to migrate the system disk and click Next. Generally speaking yes. 5V applications • Differential bidirectional data strobeNOTE: DDR3 and DDR3L Below memory compatibility will be DDR3 unless stated otherwise. 5V ±0. The speed is backward compatible but will need the motherboard to be compatible. DDR4 DDR3 DDR2 All of the above. DDR2 supersedes the original DDR SDRAM specification and has itself been superseded by DDR3 SDRAM. Copy. 283–1. The 10th Generation Intel® Desktop Processors support only DDR4 memory. 5V as well. c. Halo: Combat Evolved; Halo 2; Halo 2 Multiplayer Map Pack; Incompatible []. A new standard product or model is. DDR5 has an improved overall bandwidth of up to 1. 2Gbps per pin. 5V (DDR3) as well as work with timings for either memory technology. NOTE: DDR3L low voltage memory - NOT backward compatible with DDR3 memory What is DDR3L memory? Model Memory Type Dimm Slots Max System Memory Memory Compatibility; Latitude 3330: DDR3/DDR3L: 2: 16 GB: 1333 MHz (Sandy Bridge) 1600 MHz (Ivy Bridge) Latitude E6430u: DDR3 SODIMM: 2: 16 GB: 1600 MHz: Latitude. User's post on May 8, 2015. To ensure system stability, memory modules must be of the same type and density in Dual-Channel mode. Backward Compatibility: Backward compatible with older generations of RAMs: Not backward compatible with older generations of RAM: Voltage: Operates on 1. Memory is designed to be backward compatible within its generation, so generally speaking, you can safely add faster memory to a computer that was designed. Hynix: "Hynix DDR3L provides backward compatibility with the 1. DDR3 RAM has a 240-pin interface. Here is the latest AMD Driver for the RX-580 from AMD Download page: Radeon™ RX 580 Drivers & Support | AMD. Windows 10 Pro - Start10 - part of a local network which is a '3rd party optimizer-free' zone. The MSI H81M-P33 uses the Intel LGA 1150 CPU socket. ASRock Z690 Taichi Razer Edition – Scan – Amazon. DDR3: DDR3 is a single voltage capable memory SoDIMM, which supports 1. Backward compatible to 1600, CL = 11 (-125). In SDRAM modules, the numbers that come after the "PC" refer to the speed of the system's front-side bus. 0 video card because all three variants of this slot are backward compatible. Castlevania: Lords of Shadow - Mirror of Fate. 35 volts and are branded as DDR3L if they run properly. 5V power. Is DDR4 backward compatible with DDR3, DDR2 and DDR1? All DDR memories are mutually incompatible. One thing to keep in mind is that memory needs to be the same type - memory modules are not forward or backward compatible in terms of generation types so DDR3 will not work in DDR2 or DDR4. For systems that do not need speed increases above DDR3-1333 and DDR3-1600, DDR4 can support these slower bandwidth requirements with substantially lower power requirements. 35 V operation for memory. It uses the DDR3 memory type, with maximum speeds of up to 1600 MHz, and 2 DDR3 slots allowing for a maximum total of 16 GB RAM. 5V) SDRAM. This model of DDR RAM is backward compatible with older RAM generations. Here is a good reference for the differences between DDR2 and DDR3. DDR chips aren’t backward or forward compatible, which means you’ll need to get a new motherboard and CPU to upgrade. DDR3L is also backward compatible with DDR3, meaning it can be used in a DDR3 slot, but the voltage will be at the standard 1. Here are the major differences why DDR5 RAM is not backward compatible: RAM Technology DDR5 DDR4; Bandwidth: 6. CryptoAnd for now it seems msi is the best ram ocer for ddr4. Only use the RAM version that your motherboard supports to avoid destroying anything. 5 - 1. AM3 was launched on February 9, 2009 as the successor to Socket AM2+, alongside the initial grouping of Phenom II processors designed for it. In other words, a DDR3 module cannot be placed in a DDR2 memory socket, and vice-versa. Due to different signaling voltages, timing, and other factors, DDR3 SDRAM is neither forward nor backward compatible with any previous type of random-access memory (RAM). As DDR4 will only work in DDR4 compatible motherboards and DDR3 will only fit in DDR3 compatible motherboards. 1 Posted: Feb 3, 2017 Options Ram Upgrade: can I use DDR3L instead of DDR3? Last year I upgraded my macbook ram from 8gb to 16gb. It has to be DDR2. Frequently, DDR2 based systems can use memory installed in pairs to run in "dual channel mode" to increase memory bus throughput even further. Compared to DDR3 it operates at higher voltage, but has faster transfer rates of up to 3200 Mbit/s (PC4-25600), double that of DDR3’s maximum of 1600 Mbit/s (PC3-12800). DDR3 and DDR4 are not interchangeable, and not all RAM is the same. 0 was made available in November 2010, after multiple delays. Take a look at THIS GPU hierarchy list. DDR versus SDRAM comparison chart. DDR4 and DDR3 have key notches in different places on the DIMM to prevent them from being mixed up, and Haswell-E and X99 are DDR4 only. DDR3 and DDR2 are designed differently. In this article, we will compare DDR3 vs DDR4 RAM and understand what is the actual difference between the two. Both have different key placing so they won't even physically fit, not to mention differences in electrical voltage:. Right-click This PC on the left side and select Properties to open the system information window. In order to use DDR3 RAM in a DDR4 slot, the stick must be backward-compatible with DDR3. 35V (DDR3L) or 1. This is a common mistake. The speed is backward compatible but will need the motherboard to be compatible. 35 mm) in length but the pins in DDR4 are spaced closer (0. 35 Volt Fixed Build of Material Compatible With Intel's 3rd Generation Mobile. In general, the lower the CAS latency the better within a given memory technology. Can DDR3 be used in a DDR4 system? RAM is not all the same, and DDR3 and DDR4 are not interchangeable. 240/204. Keep in mind, you might need to go into your BIOS. I also assume the reason I see pre-configured parts such as the -125 is that they work due to the backwards compatible statement (see below) 2. 50 Vs. LGA 1151. CL = Column Address Strobe Latency, which shows the number of clock cycles that pass from when an instruction is given for a particular column and the moment the data is available. 5V) SDRAM data sheet specifications when running in 1. For example, the RAM is not backward compatible, you can’t use DDR4 RAM in a DDR3 RAM slot. It has a 288-pin type of interface. In celebration of Xbox’s 20th anniversary, we’ve added 70+ Xbox 360 and Original Xbox games to the backward compatibility library today on both Xbox One and Xbox Series X|S. This question was about. 0, while DDR3 remains on XMP 1. What does DDR5 work with?The answer is no, DDR5 has a different pin layout than DDR4 motherboard. The RAM would down-clock automatically to DDR3-2133 speed and it would run fine. Definition: Backward compatibility is defined as a feature of software or hardware when their new version keeps operating with the present or old version. But the Motherboard slot must be at least PCIe x16 (2. How often. DDR3 is not backwards compatible with DDR2. 1V UDIMM Non-ECC Desktop RAM Computer Memory SP064GBLVU480F22. DDR3 RAM is the higher-speed successor to DDR and DDR2, and at the same time, it is also the predecessor to DDR4 synchronous dynamic random-access memory (SDRAM) chips. DDR3 works on 1. LGA 1151, [1] also known as Socket H4, is a type of zero insertion force flip-chip land grid array (LGA) socket for Intel desktop processors which comes in two distinct versions: the first revision which supports both Intel's Skylake [2] and Kaby Lake CPUs, and the second revision which supports Coffee Lake CPUs exclusively. An important factor is being overlooked here and that is your CPU. DDR versions do not support forward or backward compatibility. 5V compatible mode. GameStop Moderna Pfizer Johnson & Johnson AstraZeneca Walgreens Best Buy Novavax SpaceX Tesla. All. Both DDR3 and DDR4 DIMMs are 5¼ inch (133. DDR3L is pin-compatible with DDR3. Can I put DDR4 RAM in DDR3 slot? DDR4 is not backward-compatible with DDR3 so a DDR4 DIMM will not fit on a DDR3 DIMM slot. Catherine. This means that a DDR3 graphics card cannot be used in a system that has DDR4 memory, and vice versa. NOTE: DDR3L low voltage memory - NOT backward compatible with DDR3 memory What is DDR3L memory? Model Memory Type Dimm Slots Max System Memory Memory Compatibility; Latitude 3330: DDR3/DDR3L: 2: 16 GB: 1333 MHz (Sandy Bridge) 1600 MHz (Ivy Bridge) Latitude E6430u: DDR3 SODIMM: 2: 16 GB: 1600 MHz: Latitude E6230:. 5V applications • Center terminated push/pull I/O • Differential bidirectional data strobe • Differential clock inputs (CK, CK#)Q3. 2. For nyxee's question, DDR3L is different from DDR3 and DDR4 as it can work on a voltage range. You bought a brand-new router with Wi-Fi 6 but most of the gear in your house is Wi-Fi 5 or older. 8V (DDR2) and 1. 0 proudly continues the tradition of being fully backwards compatible with previous PCIe generations. 5 V. DDR3. Yes. DDR3 SoDIMM. Backward compatible to 1866, CL = 13 (-107). 35V (JEDEC compliant); DDR3U or PC3U is the Ultra Low Voltage memory module that operates at 1. This kit offers excellent performance, compatibility, capacity, speed, and latency for desktops at a moderate price. 0. • Backward-compatible to VDD = VDDQ = 1. Here is the formula we’ll use for true memory latency: True memory latency (ns) = (2000/RAM Speed) (ns) x CAS latency. true memory latency of DDR5-4800 CL40 = 16. These connectors’ pins will be different to ensure you don’t mistakenly install the wrong RAM. DDR4 RAM has a 288-pin interface. Features •V DD = V DDQ = 1. They've backwards compatible with slower buses like 1333 MHz. Although the memory can be install. 50 Vs. DDR4 and DDR3 have key notches in different places on the DIMM to prevent them from being mixed up, and Haswell-E and X99 are DDR4 only. 5V and 1. Kit of two 4GB PC3-12800 DDR3 SoDIMM modules. Model: MD8GSD31600NHS. It is important to understand the similarities and differences between the DDR3 standard and the existing. 288/260. Sorted by: Reset to default. Both modules have key notches to lock them in place in the motherboard’s DIMM slot, but the pin. Oct 23, 2014. DDR3 consumes less power than DDR2 4. The answer is "maybe". When upgrading, make sure to determine what type of RAM you currently have installed. Thankfully, JEDEC standards say that DDR3L modules have to be backward compatible with the DDR3 standard, so most DDR3L modules should work fine at DDR3 voltage levels. Backward compatible with 1333MHz and 1066MHz operating speeds. But yes, it will work. This motherboard limitation means you'll need to choose whether you want to get the lower-cost DDR4 memory or get DDR5 with the ability to upgrade it in the future. Offset to left. PCIe 80mm M. Rating 4. DDR3 is not compatible with DDR3L since DDR3 is single voltage capable memory which operates at 1. Using ECC decreases your computer's performance by about 2 percent. 5 voltage modules came available at. Backward compatibility is defined as the ability of software, hardware, product, or technology to maintain a high degree of interoperability between modern and legacy systems. The notch on DDR2 DIMMs is in a different position from DDR DIMMs, and the pin density is higher than DDR DIMMs in desktops. Backward compatibility is a crucial principle in technology design and development. Regarding the RAM type, i. This. 2 SSD drive lengths include 30mm, 42mm, 60mm, 80mm, and 110mm. It is worth noting that the DDR4 RAM module is neither backward nor forward compatible. Compatibility of DDR2 with DDR . Centipede & Millipede. PC3-10666 = 1333 MHz. In August 2007, PCI-SIG announced that PCI Express 3. Jun 5, 2013 67,883. A DDR3 device produces more heat than a DDR3L device. 3. To celebrate 20 years of Xbox. and since they are backwards compatible, the worst you can ever do is plug a PCIe3 card into a PCIe4. For example, a motherboard designed to run DDR3-1333 can support DDR3-1600 or even DDR3-1866, but these sticks will run at a slower speed of 1333MHz. 35 V operation for memory. This type of RAM is not compatible in terms of forward or backward compatibility than its older versions, making it unique, but at the same time, doesn't. It refers to the ability of a newer version of a technology, software, or device to work harmoniously with. Essentially, DDR3 is compatible with almost every motherboard and socket out there, but DDR4 is only compatible with boards using Intel’s X99 chipset and LGA 2011 processor socket. 5V) SDRAM data sheet specifications when. After upgrading to PNY 8Gb 1. Add to Cart. DDR2 is a 240-pin module, DDR is a 184-pin module. 20 VDCs. DDR3 has a higher maximum bandwidth compared to DDR2 3. The “highest” I’ve seen is the Gigabyte Z690 Pro DDR4 & Aero G DDR4, the MSI MPG Edge DDR4 & MAG Tomahawk DDR4, or Asus. RAM Density Denotes the on-chip organization. If your motherboard is designed for DDR4 RAM, DDR3 RAM simply won't work in it. 2 form factors vary in length and width, with the chips usually populating just one side of the circuit board to keep the drive profile extremely low (less then 3mm). Vengeance memory is backward compatible with notebooks which use first-generation Intel Core i5 and Core i7 processors. Before playing a game, make sure to save in case you fail. The emerging DDR3 memory standard will extend the performance range of DDR memories considerably, while maintaining some amount of backwards compatibility with the existing DDR2 memory standard. DDR3: Internal Rate: 100-200 MHz: 100-266 MHz: Package:. The notch on DDR2 DIMMs is in a different position from DDR DIMMs, and the pin density is higher than DDR DIMMs in desktops. XP941, SM951, SM961, PM961, 960 Evo, 960 Pro) compatible motherboards (2280) Note, all below motherboards and others with a free PCIe 2. the S in SDRAM stands for static. DDR4 RAM stacked on top of a DDR5 RAM module. In other words, if you buy a 2666 MHz memory module, and the motherboard can only support 2133 MHz, the memory will go down to 2133 MHz. 5V compatible mode. 5 V. Much like how DDR3 memory modules are not backward-compatible with DDR2, DDR4 is also not backward-compatible with DDR3. M. 2GB/s. Latency DDR3 has a great benefit when it comes to latency. The speed is backward compatible but will need the motherboard to be compatible. It would be. (example: DDR3L) DDR3 is not backward-compatible with DDR2. 5V - meaning that it can only be operated at that particular voltage (and can only be used with a DDR3 slot since only DDR3 slot can provide that voltage) whereas DDR3L supports dual voltages (1. But you can use DDR3L memory with another DDR3 memory. DDR2 is a 240. 35V (1. The only thing you need to check is whether or not your motherboard has a PCI-E slot. The DDR3 RAM can be used with 1. None of its successors are forward or backward compatible with DDR1 SDRAM, meaning DDR2, DDR3, DDR4 and DDR5 memory modules will not work on DDR1-equipped motherboards, and vice versa. DDR3 runs at four times Memory bus speed and at a lower voltage than DDR2. DDR chips aren’t backward or forward compatible, which means you’ll need to get a new motherboard and CPU to upgrade. Memory is designed to be backward-compatible, so generally speaking, you can safely add faster memory to a computer that was designed to run slower memory. DDR3 is more functionally advanced than the previous 2. Frequently, DDR2 based systems can use memory installed in pairs to run in "dual channel mode" to increase memory bus throughput even further. 2007. Some of its benefits are discussed below. 5 V and 1. PLEASE do not buy a Skylake DDR3L-supporting board expecting to shove DDR3 DIMMs into it and have it work fine. DDR3 RAM is also cheaper, but if you’re a gamer or use demanding software suites, you should go with the latest variant. 2. What is DDR3 1600 RAM? DDR3 1600 RAM is a type of computer memory faster than the standard DDR3 1333 RAM. 5V (or 1. Refer to the DDR3 (1. 0Key Takeaways. DDR3 supports DRAM chips with capacities of up to 8GB and four ranks of 64 bits, each totaling 16GB per DDR3 DIMM. x cards will be compatible. ASUS ROG MAXIMUS Z690 EXTREME GLACIAL –. Since most RAM modules are backward compatible, speeds are something you need to consider a little less than the other issues discussed above. 0, it is part of the standard. 1. Physically, a DDR4 module, or dual in-line memory module (DIMM), looks very similar to a DDR3 DIMM. PCIe 5. Refer to a DDR3 (1. DDR2 and DDR3 are. 5V operation. DDR3-800 has a clock frequency of 800Mhz. The stick will not fit into the slot, and even if it does, your motherboard will refuse to recognize the format. That's not what I've received though, instead I've received 2x8GB DDR3-1600 RAM. One thing to keep in mind is that memory needs to be the same type - memory modules are not forward or backward compatible in terms of generation types so DDR3 will not work in DDR2 or DDR4. Nov 15, 2021, 10:15 AM PST. DDR3 consumes less power than DDR2 4. The notch will not accept. DDR4 RAM is not backwards compatible with DDR3 motherboards and vice versa. Step 1. 0 is Backward Binary Compatible with v1. e. . If you’re building a new computer with a new motherboard, you’ll need DDR4 RAM. Example:DDR3 RAM is rated at 1. Q: What is the operating temperature for DDR5? A: The operating temperature for DDR5 is between 0-95 degrees Celsius. 3. This should give you details regarding the type, amount, and RAM characteristics the motherboard can support. Backward compatible with 1066MHz speed. Is DDR3 all the same? DDR3 memory does not come in a standard size. As DDR4 will only work in DDR4 compatible motherboards and DDR3 will only fit in DDR3 compatible motherboards. Backward compatible to 1600, CL = 11 (-125). DDR3 is not backwards compatible with DDR2. #ddr3 #ddr4 #ddr5ram ppl ask all the time is ram backward compatible its not!!!ram isnt compatible with each othee simply because they are desined differentl. 3.