8 Gig Dimms are a no go FOREVER request denied. 2 slot supports 4X. The processor is a Core2Quad, which can be upgraded. Over 100 total manuals, tech guides, spec sheets, & etc. Memory connectors. Dell Optiplex 755 SFF RAM upgrade problem. 0. I wanted to add just a small SSD as a boot drive and keep the HDD for storage, but it is a SFF and that HDD in that big tray with a fan takes up a ton of room. KingstonMemoryShop stocks memory upgrades for your Dell OptiPlex 755 DT/MT/SFF Desktop to boost performance and capacity. 4. Something I've mentioned before, if my PC really was 64% faster, I really didn't notice much difference. 6Ghz cpu and 2Gb ram. Hello, I'm planning to upgrade my OptiPlex 755. Buy some contact cleaner and spray the RAM contacts as these desktops love to complain about RAM fault when RAM contacts go bad. If the BIST LED does not turn on or the PSU fan does not spin correctly, the. Why does crucial recommend a higher maximum ram limit for my system than the system manufacturer? At Crucial®, we ensure that the higher amount of RAM is rigorously. 6Ghz cpu and 2Gb ram DELL 0DR845 OptiPlex 755 MB with Dual Core E2140 skt 775 1. The following table lists the memory specifications of your OptiPlex 5000 Small Form Factor. 6" Laptop-#B24. OptiPlex 9020 (MT, SFF) 4. make sure you use thermal paste for the installation. My background is that I have a Dell Optiplex E8400, 4GB Crucial Ram, 2- SATA CDRW/DVD's, 1. Below memory compatibility will be DDR3 unless stated otherwise. 8 Gb/s (DDR2 800 dual 6. Memory Compatibility. 2GB RAM (1x2GB) INTEL GMA3100 ( :C ) 150GB HDD. Diagnostic lights 3,4 indicate a RAM problem. Popular components in PC builds with the Dell OptiPlex 755 Motherboard. Dell. Select the department you want to search in. DIMM DDR2 Non-ECC PC2-5300 667MHz RAM Memory. And most. I am looking to add another 8GB of RAM, but the same memory module is difficult to obtain in my location. So you can get more done around the office without having to run around - and you have more time for projects that can help an enterprise work better,. The Dell Users Manual for the E1505 states that 2 GB is the maximum for that model. Civiled. Dell Poweredge T430 Motherboard in a T420 box? 17. I added 250 gb hard drive 2gb memory and a E8400 Dual Core processor. M. 750ti is a 60w card that needs 300W psu. $250. Hello everyone, I would like to give a last upgrade to my old Optiplex 755 buying 8. I want to extend the memory to maximum Can anybody clearify this Statement from the product brief: "Delivers up to 12. I know the maximum is 8GB, but would this work? I would like 8GB but my budget isn’t in heights for this older system. 000. 667-MHz or 800-MHz DDR2 SDRAM. I also specified 2 GB of PC2-6400 800Mhz of DDR2 memory as part of the original configuration that was supplied by Dell. I want to upgrade the RAM, but I started building computers in the DDR3 era and don't really know how DDR2 compatibility works. Buy Memory RAM Upgrades for your Dell Optiplex 755 [Desktop] - 100% Compatibility Guaranteed. Dell OptiPlex 755 User's Guide Publish date: 20 APR 2008. Two more questions - What's the brand name of the RAM? Is your 755 an MT, DT, SFF or. OptiPlex Desktops & All-in-Ones; Inspiron Desktops & All-in-Ones. We messed around with the BIOS settings to try and see what was up. Both dual-channel and single-channel configurations are supported . Max System Memory: 8 GB: Installed Memory: 2 GB: Memory Socket: DIMM: Memory Technology: DDR2 SDRAM: System: Drive Controllers: Serial ATA: Interface Connection:Here's what I know about my pc: 223-0731 : OptiPlex 755 Desktop Energy Smart,Core 2 Duo E6550/2. Maximum memory - 128 GB; Minimum memory - 4 GB; Memory per slot - 4 GB, 8 GB, 16 GB, and 32 GB; Number of slots - Four DIMM slots; Type - Dual. 22. Late in its life it did get VISTA WDDM 1. 66GHz Kentsfield Quad Core Q6700, 8MB, 1066FSB, G0. 25 Gig of ram with the rest stolen by Video Frame Buffer and the memory map for Bios. Guaranteed Compatible with Dell Optiplex 755. Crucial Memory and SSD upgrades - 100% Compatibility Guaranteed for Dell OptiPlex 755 Series (Desktop Mini-Tower and Small Form Factor) - FREE US Delivery. 1GB Memory Upgrade for Dell OptiPlex 755 DDR2 PC2-5300 667MHz Desktop Non-ECC DIMM RAM (PARTS-QUICK Brand) $699. Learn how to set up your Dell OptiPlex 755 desktop computer with this comprehensive guide. good day! I have a DELL optiplex 755 SFF PC. )Newer versions do not run at max speed in. I really don't know that you'll notice a difference in RAM speed between 667MHz and 800MHz simply using the PC. $50. The 780 takes either 1,066MHz or 1,333MHz RAM. The NVIDIA Quadro K620 offers impressive power-efficient 3D application performance and capability. Find replacement parts and upgrades for Your Dell system by selecting a brand or product model. 8GB ram ddr2 @ 800Mhz will work, as I’ve upgraded from 4gb in my 755 DT. 5. 0. Hello,I purchased an Optiplex 380 a couple of years ago which came with 2x2GB RAM @ 1066Mhz and now I think time has come to upgrade to at least 8GB. GPU - NVIDIA GT 240. 50 $ 13 . Dell Optiplex 755 Tower Computer, 2. Tengo una Dell Optiplex 755 que de fabrica viene con 2 Gb. compare. The maximum amount of memory you can install into the Dell Optiplex 7010 SFF is 32Gb. It has a E2160 1. 115 2. Dell Optiplex 7010 SFF - GPU, PSU, RAM, HHD & SSD Upgrade. GX620= Pentium D or Pentium4 with 4 GIGS max DDR2 RAM = $100 or less in many places. Why does crucial recommend a higher maximum ram limit for my system than the system manufacturer? At Crucial®, we ensure that the higher amount of RAM is rigorously. I currently have them all "maxed" out at 8GB RAM apiece, which is the listed maximum for each. Ad. Optiplex 755 desktop pdf manual download. Memory slots Four UDIMM slots Memory type Dual-channel DDR4 Memory speed 3200 MHz Maximum memory configuration 128 GB. Max Size:If you have Windows, System Info in the Control Panel will tell you total use of the RAM. Even if the BIOS update is from 2007 like mine. Type. Report. Aims to increase memory bandwidth while keeping power consumption low in comparison with its predecessor,. 5783 05-02-2017 18:00 PM upgrading RAM on OptiPlex 755 with 0GM819 motherboard Good day Sirs, I have Mini Tower OptiPlex 755 with 0GM819 motherboard. Is it possible to upgrade my Q6600 cpu to a Q9550 / Q96. com SearchEl equipo OptiPlex 755 soporta memorias DDR2 SDRAM de 667 o 800 MHz, para que el ordenador reconozca los 8 GB de memoria, es necesario que el equipo tenga instalado un sistema operativo que trabaje a 64 bits. I'm looking to upgrade the CPU on a Dell Optiplex 755 Desktop system. We have a Dell OptiPlex 755 where the diagnostic lights will often show a 3 4 pattern. 74. Intel® Q965 (ICH8) Express Chipset. 6 Based on Dell internal analysis using publicly available specs in August 2023 comparing maximum. If you are using a 64-bit operating system, your computer will support a maximum of 8 GB (2-GB DIMMs in each of the four slots. 35 V operation for memory. #5. I previously owned a Dell Dimension E521 that consisted of a AMD Athlon 64 5000+, 4 GB of RAM, and a HD 6670. - SkillBench (space shooter). pretty simple way to make a fast computer even faster. I'm thinking of upgrading my GPU to GTX 1050 Ti Low Profile, upgrading the memory up to 16gb or 32gb and upgrade the HHD to 1TB and replace the optical drive. FREE delivery Mon, Nov 13 . The memory will run at a lower PC2-6400 (or PC2-5300) speed on such a system. When I put Win10 on an SSD and maxed the RAM, that's when I really noticed a difference in speed. Dell Optiplex 960. Thanks for your help so far, I really appreciate it. Adding memory is one of the most cost-effective ways to improve your computer's performance. The actual. Aug 28, 2018. If the system and OS is 64 bits, it isn't a architectural reason to have a limit of memory to 4 or 8 GB. 4: SEE FANS spin for 1 second , is very very common. Dell 755 optiplex walleyeblugill. Memory Recommendations for Optiplex 755 SFF. Low Cost Delivery Low Prices 100% Safe & Secure. 5" bay : Additional information : 9350 9360: 1: 1x M. I purchased a Dell Optiplex Micro 5000 computer which came with a SK Hynix SODIMM 8GB (HMAA1GS6CJR6N) memory module. You never get the full amount of ram because the Video Frame Buffer and Bios shadow Steals 512 megs or more that you NEVER get back. . compare. 8. Above Optiplex's are a little less old. 2 slot supports 4X. . 8GB de memória máxima. 1. A-Tech 8GB (4X 2GB) Max Memory RAM Kit for Dell OptiPlex 755, 745, 740, (MT, DT, SFF) - DDR2 667MHz PC2-5300 Non-ECC DIMM Upgrade. 2 slot supports 4X. Can anybody clearify this Statement from the product brief: "Delivers up to 12. DELL™ OPTIPLEX™ 760 TECHNICAL GUIDEBOOK V1. Disconnect the power cable from the PSU, and wait for 15 seconds. Dell Optiplex Desktops Support Forum. the maximum supported Cpu is a q9650. In 2012 windows 8. 10GHz 3. Helpful. Exact same specs as the shipped version, but the system will not accept it and will not boot. 5-inch internal SSD • SATA 6. This is just a guess though I am not Dell engineering and I don't have a Cpu to test. Crucial Scanner. The best solution is to buy refurbished mid-tower. 25-01-2019 18:00 PM. 5" (SATA) SSD Interface: SATA 3. I have multiples of the Optiplex 755 and XPS 420's- They're great little machines for virtualization. They both came with 2 x 1GB Hynix PC2-5300U. Dell Support Driver and Downloads not offering manual downloads for my. Tengo 4 memorias ram de 1gb en mi optiplex 755, quiero aumentarla a 8GB. OPTIPLEX Spec Sheet 5000 Sustainability on OptiPlex OptiPlex is a leading platform for sustainable innovation and utilizes the most recycled content of all Dell PCs with up to 60% recycled plastic and closed-loop materials in its design. 8 Ghz Dual Core Pentium (LGA775), 2x1 GB of 667Mhz DDR2, Integrated. Help Me Choose. Available with top-of-the-line processors, generous memory options, native support for dual high-resolution. 0 ports, whereas Dell Optiplex 780 features 8 USB 2. Alienware Desktops. As far as the the CPU goes, the C2Q Q6700 is compatible with your SFF. Good day Sirs, I have Mini Tower OptiPlex 755 with 0GM819 motherboard . 1600MHz (DDR3 Non ECC) and: Note: DDR3 and DDR3L. 95. The list spans from 1996 to 2023 and includes CPU compatibility, chipset type, number of memory slots, maximum ram and the ram speed. 0. 3. i own an optiplex 755 and just did install a q9550 after updating bios to a20 and the thing is a rocket now,video card is a gt220(hdmi out to 32"lcd sony bravia) and 4gb of ddr2 800mhz ram. A-Tech 8GB (4X 2GB) Max Memory RAM Kit for Dell OptiPlex 755, 745, 740, (MT, DT, SFF) - DDR2 667MHz PC2-5300 Non-ECC DIMM Upgrade 667 MHz 240-Pin 4. A 3rd party application (SIW) informs me that the maximum RAM capacity is 1024MB. Model M323R1GB4BB0-CQK-0L. Unless you bought it already, I suggest A-Tech RAM. Set personal price drop alerts! If you have Windows, System Info in the Control Panel will tell you total use of the RAM. OptiPlex. 11 Posts. Search OptiPlex 755 Support Information Find articles, manuals and more to help support your product. 5mm adapter) Internal SSD CT4000MX500SSD1 Configuration ID: CT20740120 Maximum Memory; 16GB: Memory Expansion Slots / Banks; 4 Slots: Memory Type & Info; DDR2 PC2-5300 667MHz / PC2-6400 800MHz Non-ECC DIMM Intel Q35 Express Chipset. GTX 650Ti boost works well w Q9650 too, but it requires a 6 pin power connector and 400W psu. Upvote 1 Downvote. The technical guidebook to the 7010 says that each of the four DIMM slots can handle up to 8GB memory modules, but then says the system maximum is only 16GB. After 15 seconds, connect the power cable to the computer. Dell only lists what was available and tested with that system when new. Helps you switch between applications, open documents, and complete daily tasks faster. A09, 3/11/2008. Also, some Mobo's particularly OEM and other lower quality ones, often do not like having all the RAM slots filled. . Small Business. NA / NA / NA / NA. Dell meets the current and future demands of high-performance, power embedded computing, making it ideal for communications, transaction terminal, interactive client, industrial automation applications, as well as for standard home use. Both the 755 and 760 run the same processors. To get the best performance and speed from your Optiplex, upgrade to the maximum memory. (PC2-5300U) 667mhz. . Hello, I understand that buying more than 4 GB of RAM is wasteful becasue 32 bit win will not use it. Dell OptiPlex desktops are engineered to respect our planethi i have a Dell OptiPlex 755/USFF, and i wanna upgrade the ram. I have googled this some and the folk at my630i. I would like to get input from other people that use the Optiplex 755 and get some input on what they recommend upgrading on the system to make it more of a personal. Dell OptiPlex 755 Small Form Factor [SFF] Desktop Memory RAM & SSDs. 0. Hard Drive: GB means 1 billion bytes and TB equals 1 trillion. The memory speeds supported include 667 and 800 MHz DDR2 memory. The computer is a BTX form factor so aftermarket parts aren't actually made to fit. All of these can accept 8GB of DDR2 except the crippled G31 is unable to remap PCIE/APIC memory to above 4GB so can never actually use more than 3. Max Supported: Ultra Small Factor model: 4 GB / All other models: 8 GB. . Ao your looking at DDR2-6667 or DDR-800mhz, 4x2GB DDR2 ram NON. Going one step further Crucial RAM states that 64GB of RAM total is compatible as per their site here. - RAM tests include: single/multi core bandwidth and latency. Install modules in. 2. I want to upgrade my processor to the Core 2 Quad Q9650. downloaded for various Dell's. 0Gb/s • 540 MB/s Read, 500 MB/s Write. XPS Desktops. 71% of bottleneck. I know this is post is 6 months old but I did a lot of looking and due to height and width limits of 755 DT the maximum capacity card that I could find (and they're getting scarce) if you want to be able to close the cover is the AMD Radeon HD 6450 LOW PROFILE, SINGLE WIDTH with DVI and Display Port interface ONLY. It has 4 Ram slots (2 Banks of 2) and each can take 8Gb of Ram. Only one thing changes RAM speed. Sign In Upload. DDR4-2666 • CL=19 • NON-ECC • UDIMM • 288-pin • 1. 25 (2 new offers) 8GB (4GBx2) Team High Performance Memory RAM Upgrade For Dell OptiPlex 210Ln 745 Series (Desktop Mini-Tower and Small Form Factor). Also for: Optiplex. TECHNICAL GUIDEBOOK . 5 x the total memory. If I just move my old hard drive, RAM, video card and tel-fax modem card into the replacement Opti 755, will it work? I did this once before, six years ago, and I recall that this involves msoobe. Optiplex 7000 Small Form Factor Parts & Upgrades Dell Memory Upgrade - 16GB - 1RX8 DDR4 UDIMM 3200MHz Since I saw Samsung listed in redxps' list: Samsung M378A2G43AB3-CWE 16GB DDR4 3200MHz PC4-25600 1. If you really want to just max out your motherboard you could install an Optiplex 780 motherboard you would new to get DDR3 ram and then. 35 V operation for memory. Make optimal use of your installed memory. 2: M. OptiPlex 3090 Small Form Factor. MP627 2. OptiPlex 3280 All-in-One. Maximum memory: 8GB Standard memory: 1 or 2GB removable All compatible upgrades DRAM Internal SSD External SSD Internal SSD for: OptiPlex 755 Series (Desktop Mini-Tower and Small Form Factor) Crucial MX500 4TB 3D NAND SATA 2. We would like to show you a description here but the site won’t allow us. Dec 27, 2016. also PCIe can be updated from 2. Memory: 1 GB, 2 GB, 3 GB, or 8 GB 800 MHz DDR2, 2 DIMM slots. So my system has the following: A07 bios installed. So, I tried a kingston value ram of 4gb @ 1333M. de memoria Ram. #1. Isso é algum problema de configu. The newer the game or program intensity, the more negligible the OC will be. Safely scan your system for max upgrade options. Small Business. Responses (1). normally on a OptiPlex 755 (and you need to confirm this by looking inside the case) the system has 4 slots for ram, ands 8GB is the highest in 99% of cases for 775 CPUs' thus DDR-800/667 being the two possible speeds used on the said motherboard. Dell™ Branded memory offered in the Memory Selector has gone through rigorous quality assurance and quality control testing to ensure it will work with. 667 MHz 240-Pin. 8 Gb/s (DDR2 800. 7GHz Memory: 6144MB RAM Available OS Memory: 3070MB RAM Page File: 1553MB used, 4584MB available DirectX Version: DirectX 11. Dell Latitude 9430 Maximum Memory Support. Or fastest delivery Nov 7 - 8 . 0 (6Gb/s) Show full device specification. Podrá encontrar mas información referente a la memoria RAM del equipo OptiPlex 755 en las páginas 81 y 105 del siguiente manual en línea: Guía del usuario de Dell OptiPlex 755. Please check that you are ordering for the correct Model, as the Memory does vary. Reinstall Windows XP on OptiPlex 755. But Dell never tested the 755 with higher than 8GB RAM. The computer slows down often and I assume it is because of memory issues and I. PowerEdge Hardware General. Memory specifications . Note regarding operating systems not listed above: Dell may not support an operating system for various reasons, including discontinued support from the software vendor, lack of availability with certain products. Computer Specs: Processor: Intel (R) Core (TM) i5-2400 CPU @ 3. 4. Description: Download: ATI 256MB RADEON X850 XT Platinum Edition, Hyper Memory PCI-Express X16 (DVI/VGA/TV out) Radeon X300 SE, 128MB Radeon X600 SE, RADEON® X600 256MB HYPERMEMORY, 256MB Radeon X600, Radeon X1900XTX 512MB, X1300 Pro 256MB, X1300, X1300 Pro, v. Table 4. 4. 6: POWER cord back now. Depending on how much RAM you need, if you have any RAM heavy apps, 7020 has max listed RAM @ 16GB and 9020 @ 32GB. 36-070314a3-045812E-Dell. Works in ALL 755 models. Power figures for DELL Optiplex 755 Mini Tower. Example:Keep in mind that RAM is best added as matched pairs. After clarification as to the model Optiplex you have, we'll be able to assist further. Question Maximum number optical. Their seems to be some conflicting information with the dell manuals: check out the max memory from the dell optiples 380 setup and Features Information pdf. ovErviEw 3 Mini Tower Computer (MT) View 5. System Model OptiPlex 755. 8GHz Intel Celeron 430 n/a Serial ATA RAID, Ultra ATA/100 PCI/PCI Express 16x 80. Replaced a L305P-01 (305W) PS and upgraded the memory to 4Gb. ) - it is much slower than when first purchased. 25GB of memory, even with a 64-bit. 1x 4270E - Screw M2X3 : 9365 : 1: 1x M. Dell Optiplex 755: 32bit or 64bit. *Important Information: System Memory and Graphics: Significant system memory may be used to support graphics, depending on system memory size and other factors. 8 Gb/s (DDR2 800. Memory RAM for Optiplex 755 Ultra Small Form Factor. I would like to get input from other people that use the Optiplex 755 and get some input on what they recommend upgrading on the system to make it more of a personal computer than a business. Power Supply PSU PSA Dell Optiplex 780 745 760 755 Tower. Processor Intel (R) Core (TM)2 Duo CPU E4600 @ 2. Core for Core improvement is minimal. 91 Reviews. To get the best performance and speed from your Optiplex, upgrade to the maximum memory. Processor: Up to 4-core Intel Core 2 Quad Q9650, 3. Each memory slot can hold DDR2 PC2-8500, DDR2 PC2-6400, DDR2 PC2-5300 with a maximum of 4GB kit (2GBx2) per slot. Maximum memory is 64GB on Tower/Small Form Factor, 32GB on Micro. This is from the 760 manual in Dell support. RAM & SSD Upgrades. While they can take HDD's in the TB's, the max listed for SSD is 256 GB. Data Security and Recovery with RAID 1 support ensures real time redundancy for data - helping to keep your business. PC Dell optiplex 755 Slim Core 2 Duo HDD 250gb ram 4gb. Discover more about the. Dell™ optiplex™ 755 technical guiDe systEM boarD connEctor MaxiMuM aLLowabLE DiMEnsions usff PCI Slot (s) Dimensions: (HxL) Height 4. What is the fastest CPU this will support? Can I get a PS greater than the 280W that is in it now?. The system turning on when you connect the power is a BIOS setting (power restore). 755 never came with win7 / 7 drivers/ 7 COA from dell. All other brands will fail the memory check at boot. Shop products from small business brands sold in Amazon’s store. Optiplex 755 Manual. 9 out of 5 stars based on 14 product ratings (14) $74. - no new coolers are needed. DDR2 PC2-5300 667MHz / PC2-6400 800MHz Non-ECC DIMM. This item: 8GB 4X2GB Dell OptiPlex 755 Series Desktop/PC DDR2 PC2-5300 RAM Memory. First thing is to replace CMOs battery with new one ($1-2). Solution dextermat Nov 22, 2016 Should be 16 gb max source :more info here You have to choose between 2 x 8 gb ddr2 OR ddr3 because you cannot mix them. Jun 27, 2018. This computer supports maximum memory speed of 800MHz DDR2 SDRAM. It has a Core 2 Quad q6600 CPU in it, with 2 GB of ram and a PSU 275w. 240GB 2. 25. #5. #3. I've got a Nvidia Geforce GT220 Video card, which is a low profile video card, it can consume maximum of 58 W, and this video card requires minimum of 300 W to work properly w/o. With 1GB GPU= 4GB RAM. Officially, (according to the Dell Technical Guide Book for the Optiplex GX 755) the max CPU and RAM are: Intel Core 2 Quad Q6700 Processor (2. 512 MB, 1 GB, or 2 GB non-ECC. I'm going to buy my first Dell computer, which is a Dell Optiplex 755 Small Form Factor. Core, Intel Inside, Intel Inside Logo, Intel vPro, Itanium, Itanium Inside, Intel Evo, Intel Optane, Iris, Itanium, MAX, Pentium. e. DDR3-1600MHz can be used & what I posted above, but. I'll buy my first Dell computer, which is a Dell Optiplex 755 Small Form Factor. I currently have them all "maxed" out at 8GB RAM apiece, which is the listed maximum for eac. When setting up, Dell recommends that you: Connect to a network for Windows updates. Dear Dell Users. Windows Vista, 32-bit. Your most impressive computer set-up. Dell Latitude 9430 Maximum. Dell OptiPlex DDR3 Memory Compatibility Guide Reference the DDR3 Memory Compatibility Guide for the Dell OptiPlex series. Connect the power cable. 3 out of 5 stars (3) $13. Are you sure I don't need a new power supply? I got the Ram and Hard drive covered now, so i don't need to worry about that, neither the CPU. Hi, my PC came with a Samsung 8GB RAM (DDR5 UDIMM 4800MHZ). OptiPlex 755 Advanced REMOTE IT Management Dell OptiPlex 755 offers enhanced management and control with Intel® vPro™ processor technology, giving IT staff excellent flexibility, high efficiency, and reduced desktop-side troubleshooting. T. Top Solutions. Saying not supported doesn't state if it wasn't tested so they can't say it will work, or if it was tested and failed. Hi,. Yes, that's an i7-2600 SR00B in there! All appears to be going well, but it's only the first day with 16GB. The only way I know to fix it if you want to pursue it is to return the RAM you just bought. Start a Conversation. Max memory for Optiplex 780. Sep 15, 2016. I've taken a humble Optiplex 755 Desktop chassis, upgraded the RAM to 4gb, upgraded the HD to a 60gb OCZ Vertex 2E Solid State Drive, added a PCI-E full-height riser, and upgraded the graphics card to the maximum possible that would fit into the case. The My Computer properties show 3. Maximum Memory: 8GB: Maximum Memory Per Slot: 2GB: Number Of Memory Sockets: 4: Device Specifications; Make & Model: Dell OptiPlex 755 Small Form Factor [SFF] Device Type:Below memory compatibility will be DDR3 unless stated otherwise. Crucial. I checked each stick, and individually they work, just not as a pair. 88 Usable) Operating System: Windows 11 Pro. 5 volt memory. 18. Addressing Memory Configurations. This computer supports maximum memory speed of 800MHz DDR2 SDRAM. #1. Can someone confirm the RAM capacity of an Optiplex GX 280? I bought a used machine, it is fitted with 2 x 512 MB. DELL™ OPTIPLEX XE . – TJJ.