I replaced it with 8 GB of Kingston memory (KVR800D2N6). 8GHz 4GB RAM No HDD No OS - A+. Another one unsupported by Dell for the 755 - core 2 quad Q9650. Beyond just RAID support, the system offers proactive security features from vPro, and advanced remote management capabilities. However, at your own risk, you can also try the more powerful GeForce GTX 1650 Low Profile (75 W). #2. If a 256 GB SSD limit seems strange as it's not "250 GB," that's straight from the spec. Forums. Show More. Try this with each stick individually. 0 out of 5 stars 1 rating. OptiPlex 3090 Ultra Form Factor. Get the best deals on Dell Optiplex 755 Memory and find everything you'll need to improve your home office setup at eBay. compare. Tengo una Dell Optiplex 755 que de fabrica viene con 2 Gb. FRONT VIEW 1 . 30,340. 59. My Optiplex 755 was delivered with 2GB memory (2 x 1GB, non-ECC, 667MHz, DDR2 SDRAM), and two empty slots. Mi pregunta es ¿Puedo colocar en una de las ranuras libres una memoria ram kingston kvr8002N6 de 2 GB a 1. The Dell OptiPlex 755 gives you advanced security options to help keep your data secure real-time. Ao your looking at DDR2-6667 or DDR-800mhz, 4x2GB DDR2 ram NON ECC you will need. View PDF. Core for Core improvement is minimal. Maximum RAM will depend on the form factor (i. 0 GHz Intel E8400 CPU, memoria de 4 GB, Disco duro de 250 GB, DVD R/W, Windows Professional. Processor. 69 (3 used & new offers) Amazon. The My Computer properties show 3. Yes, crucial brand ram from genuine micron factories is about the only memory that will ever work in a dell computer. [quotemsg=12291034,0,1530605]I have the largest optiplex 755 and I am about to install a new motherboard with a new processor and RAM. 2008. 0Gb/s • 540 MB/s Read, 500 MB/s Write. Brand. FREE delivery Tue, Apr 25 . EDIT: Screengrabs below will show 1,600MHz RAM, which is what came up on the Crucial site for the 780. 1, or 2. . View PDF. $169. Dell OptiPlex 755 User's Guide Publish date: 20 APR 2008. S. FREE delivery Fri, Sep 1 . Solved; Is it safe to change PSU in Dell Optiplex 755? snowducksnowduck; May 1, 2018; Components; Replies 2 Views 750. $14. (2) Refurbished Dell Optiplex 755 USFF Core 2 Duo 80gb HD 2gb ram All-In-One with 20" LCD Windows 7 Professional. 4GB KIT 2 x 2GB Dell Optiplex 210L 210Ln 320 740 745 GX520 GX620 Ram Memory. Small Business. Fast & Free shipping on many items!. 63$31. A seagate 500GB HDD and (originally) 4GB of Samsung PC2-5300U DDR2 ram in a 4x1 configuration. Only 1 left! Dell Optiplex 755 Desktop Core 2 Duo E6550 4GB 500GB HDD Windows XP Pro 32Bit. Data Security and Recovery with RAID 1 support ensures real time redundancy for data - helping to keep your business. I'm going to buy my first Dell computer, which is a Dell Optiplex 755 Small Form Factor. Safely scan your system for max upgrade options. Compartir:Buy Memory RAM Upgrades for your Dell Optiplex 755 [Desktop] - 100% Compatibility Guaranteed. OptiPlex 755 User's Guide - iAMT Publish date: 20 APR. Currently installed with 4 GB (2 x 2GB modules). HARD DRIVE 1. The ASUS GT740-2GD3-CSM 2GB is a 75W card so it does not need an AUX power connection and works fine with 305W Tower power supply. Make sure your mother board can support the specific gen and model of cpu you find. dell optiplex 745,755,760,780,gx520. FYI, currently my OptiPlex 755 DT running on Windows 7 Pro 64-Bit with Intel Core 2 Duo E6550, 2×2GB 800Mhz RAM, Phoenix ROM BIOS PLUS Version 1. The USFF chassis does not. G. or Best Offer. 5GB Ram Core 2 Duo. 0GHz Processor -4gb of ram (great amount that allows multiple applications to run simultaneously) -160gb Hard Drive (more than enough storage space for the typical user) -DVDrom (watch DVD movies, Important information. de memoria Ram. Dell OptiPlex 755 Replacement In Stock Parts List . Price Match Guarantee. 00 mm (11. There are TFX power supplies that are used on many compact case models. Optiplex 780 Tech Guide From the Optiplex 755 Tech Guide, 800MHz is the max RAM speed for it. Buy A-Tech 4GB (2 x 2GB) Memory RAM Kit for Dell OptiPlex 960, 760, 755, 745, 740, 360, 330, 160, (MT, DT, SFF, USFF) - DDR2 800MHz PC2-6400 Non-ECC DIMM Modules: Memory - Amazon. Fast & Free shipping on many items!Get the best deals on FB-DIMM Computer Memory (RAM) 64 GB Total Capacity and find everything you'll need to improve your home office setup at eBay. Opens in a new window or tab. OptiPlex 9020 (MT, SFF) 4. 00. 00 ghz dual core cpu (probably a E2180 from previous experience), DTP should mean the DT or Desktop model, the 80gb is the hard drive size and the 2048mb is the amount of installed ram it comes with. 0 GHz Intel E8400 CPU, memoria de 4 GB, Disco duro de 250 GB, DVD R/W, Windows Professional. Apple M1, 8GB RAM, 256GB, macOS Ventura, Logitech G305 K/DA, Logitech MX Keys, ViewSonic VX2478 Consoles: Softmodded 1. 0. I know the Ram upgraded i need but im stumped on what kinda graphics card to get. 89. The specs for Optiplex 755 Desktop comes in these configurations with a retail price tag. Get the best deals on Dell Optiplex 755 Motherboard and find everything you'll need to improve your home office setup at eBay. Was: £21. Fast & Free shipping on many items! Get the best deals on 2 GB Capacity per Module DDR2 SDRAM DIMM Computer Memory (RAM) with 4 Modules. or Best Offer. We have a Dell OptiPlex 755 where the diagnostic lights will often show a 3 4 pattern. I really only want play Minecraft, WoW, LoLm and TF2. This beep code tells you that the computer encountered a memory problem. make sure you use thermal paste for the installation. Typical price: $174. Even if the BIOS update is from 2007 like mine. It has a Core 2 Quad q6600 CPU in it, with 2 gigs of ram, and a 275w psu. 24. e. 2GB single module for Dell OptiPlex 210L 320 330 740 745 755 Memory Ram (A89)Buy Kingston Dell OptiPlex 755 Small Form Factor [SFF] Desktop Memory RAM & SSD upgrades. The MT case can take full height cards, The DT and SFF require low profile. 000000] BIOS-e820:. $129. OptiPlex 210L OptiPlex 210Ln OptiPlex 3000 Micro OptiPlex 3000 SFF OptiPlex 3000 Tower OptiPlex 3010 Desktop OptiPlex 3010 Mini Tower OptiPlex 3010 Small Form Factor OptiPlex 3011 All-in-One OptiPlex. SPONSORED. 3. Caps safe. 89. 89 $ 64. Customize. 99 $174. View PDF. Bad media, Bad power supply, Bad/Non INTEL CHIPSET compatible ram etc. Brand. Tengo una Dell Optiplex 755 que de fabrica viene con 2 Gb. 36 product ratings - Samsung 256MB SO-DIMM 333 MHz PC-2700 DDR Memory RAM (PC2700S-25331) 200-PIN. Voltage: 1. Personally I would go with ddr3 because the 8 gb sticks are less expensive than ddr2 8 gb (if they even exist) Also they are faster. $14. This time the base clock is upped to 800Mhz. 5gb of ram Intel core 2 quad processor AMD R7 250 2GB graphics card and went to add another gb of ram correct size same brand and it seemed to fit but I got a buzzing sound when I went to turn it on tried removing it and adding it again same issueRemember, chances are mixed RAM won't work in a 780. 1GB DIMM PC2-5300 DDR2 667MHz Desktop Memory RAM for Dell Optiplex 755 and other. MOUSE BUTTON 0. The new Dell OptiPlex 755 offers a compelling, versatile solution that can help you meet evolving business needs with the right technologies and services. I'm wondering if I should opt for 2 sticks of 4 gigabyte RAM, or 4 sticks of 2 gigabyte RAM. Increasing your memory capacity is one of the. 58 sold. (hdd can upgrade to ssd. 2 out of 5 stars 40. View PDF. 66GHZ CPU and 4GB RAM. CPU PROCESSOR 0. or Best Offer. Our $1,402 test unit came equipped with a 2. BTW, some will tell you the page file will wear your drive faster, technically correct, practically irrelevant. Low Cost Delivery Low Prices 100% Safe & SecureDell OptiPlex 755 User's Guide Publish date: 20 APR. I added 250 gb hard drive 2gb memory and a E8400 Dual Core processor. When I booted up I got a message "unsupported memory configuration. Add to cart. Replace the Hard Drive. R. 9. I have a Dell Optiplex 755. EUR 13. 18,530. View PDF. Dell. And using my flat screen as the monitor threw the RGB cable. Dell OptiPlex 755, like many other OptiPlex in this era, uses BTX standard (Inverted ATX), so no ATX and ITX family motherboards (even Micro ATX or Mini ITX) will FIT! Max RAM is 8GB (4x2GB). I went with two 800MHz 512Mb PC2-6400 Kingston KTD-DM8400C/512 CL-5 sticks, supposedly compatible with Optiplex 755. Publish date: 20 APR 2008. 04. Crucial 16GB PC4-21300 (DDR4-2666) Memory (CT16G4SFD8266)Dell Optiplex 755 Memory; Dell Optiplex 760 Memory; Dell Optiplex 780 Memory; Dell Optiplex Gx520 Memory; Dell Optiplex Gx620 Memory; Dell Studio 1555 Ram; Dell T110 Memory In Computer Memory (Ram) Dell T3400 Memory; Dell Vostro 200 Memory; Dell Xps M1530 Ram; Gateway Dx Indiana Computer Memory (RAM)Get the best deals on HP SO-DIMM Computer Memory (RAM) 16 GB Total Capacity and find everything you'll need to improve your home office setup at eBay. 99 –DELL OPTIPLEX 755 SFF, CORE 2 DUO 2. With 1GB GPU= 4GB RAM. Optiplex 745. 99. Memory issue on Optiplex 755. The memory was twice replaced using new Dell. New Listing Dell OptiPlex 7020 SFF Intel i7-4790 3. ) Width 92. $99. Try the Hard Drive data cable in a different slot. 2008. The Q9650 has 4 cores versus the E8600's 2-- as well, it has twice the cache (12MB vs 6MB), both fit the LGA775 socket, and the Q9560 can be overclocked. It's an Optiplex 755 SFF with windows 10 64bit, so I'm going with 8GB ram (2 x 4), an SSD in place of the old HDD. Many thanksCrucial Memory and SSD upgrades - 100% Compatibility Guaranteed for Dell OptiPlex 755. 43 shipping. It's not too unusual for RAM to be exceeded on some older and somewhat older Optiplex's. Fast & Free shipping on many items!2GB 240-pin PC2-5300 DDR2-667 non-ECC non-Registered DIMM. Typical of Dell business machines, they try to keep things as consistent as possible so that moving to a new desktop line doesn't make the. Free shipping!. RACLAPP. Yes, it can take 16GB RAM. $47. 66GHz Yorkfield Quad Core Q9400, 6MB, 1333FSB, R0. 69 (3 used & new offers) How much memory does the Dell Optiplex 755 Desktop Computer take? You can upgrade your Dell Optiplex 755 Desktop Computer to up to a maximum memory capacity of 16GB Memory. 00 $ 195. 35 V used to 1. I'm thinking about buying a Dell Outlet 755 for home, to be fitted out with 8GB of ram, 64bit Ubuntu Linux, mirrored 1TB drives, as a vmWare virtual server host, and a file/media server. For 4GB, the best option is a 2x2GB matched pair, but the Mobo may not except 2GB RAM sticks. I have personally tested it with 24Gb (2 x 8Gb and 2 x 4Gb). That's Q9650 and Q9550s ,Q9550 The Q9505s is an R0 stepping. 66GHz, 8MB L2 cache, 1066MHz FSB, VT) 8GB of DDR2-800 (PC6400) non-ECC memory Crucial Memory and SSD upgrades - 100% Compatibility Guaranteed for Dell OptiPlex 755 Series (Desktop Mini-Tower and Small Form Factor) - FREE US Delivery. I have an optiplex 755, a couple weeks ago the PC wouldnt boot. But your money would be better spent on a newer model that supports current ram and hardware as well as coming with windows 10 drivers. Thanks for your help so far, I really appreciate it. I rebooted the PC. C $27. Publish date: 20 APR. The CPUID# and wattage are in spec. I'm typing this up on an HP nc6000 laptop with 1gb ram on a 1. Optiplex 755 can take 16GB as 4GB modules. There are ZERO issues with ANY 64 bit version of windows on the 755. Shop Amazon for 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 and find millions of items, delivered faster than ever. com for ram for optiplex 745. Search Newegg. 2. Dell. Publish date: 20 APR. I would suggest you remove all your memory sticks. The memory speeds supported include 667 and 800 MHz DDR2 memory. System Model: OptiPlex 755 BIOS: Phoenix ROM BIOS PLUS Version 1. 0a x1 Integrated memory 64KBytes RX, 8KBytes TX. GPU - NVIDIA GT 240. Buy some contact cleaner and spray the RAM contacts as these desktops love to complain about RAM fault when RAM contacts go bad. Two more questions - What's the brand name of the RAM? Is your 755 an MT, DT, SFF or. 'GDDR5 has better memory bandwidth and a significantly higher memory clock speed, so it is better to go with. Solution. Get the best deals on DIMM Computer Memory (RAM) 4 MB Total Capacity and find everything you'll need to improve your home office setup at eBay. 6GHz 8GB WIN7COA Fair No SSD. The pc has a INTEL 2 core duo processor 2. com FREE DELIVERY possible on eligible purchasesIt hung on the "Starting Windows" section of the install. Thanks!I got an Optiplex 755, and lately, I got an 8GB ram but after one week when I turned the pc on I notice that the pc is on but the screen off; however I tried to replug in the rams its worked but by taking away two rams out of 4, and I knows that 2 out of 4 ram plugin are working, so how can I fix this to use all rams plugins. I have two Optiplex 755 SFF running VMware ESX 4. $149. Dell Optiplex 755 RAM issues. You can use the Cursor or Arrow keys to navigate the menu and select your choice. Resolution Out of warranty? No problem. version 1. parts-quick (45,397) 99. Vendor should know what they're selling. 1, or 2. A seagate 500GB HDD and (originally) 4GB of Samsung PC2-5300U DDR2 ram in a 4x1 configuration. Beyond just RAID support, the system offers proactive security features from vPro, and advanced remote management capabilities. 8GB ram ddr2 @ 800Mhz will work, as I’ve upgraded from 4gb in my 755 DT. good day! I have a DELL optiplex 755 SFF PC. Add to Cart. Crucial PC2-6400 4 GB SO-DIMM 800 MHz PC2-6400 DDR2 SDRAM Memory Module (CT51264AC800) (29) $35. Desktop/Workstation RAM upgrade » OptiPlex 755 by Dell. The 755 is limited to SATAII (3gb/s) while the 9020 has SATAIII (6gb/s). 1GB Memory Upgrade for Dell OptiPlex 755 DDR2 PC2-5300 667MHz Desktop Non-ECC DIMM RAM (PARTS-QUICK Brand) $699. 1-3-1 through 2-4-4 Memory not being properly identified or used. The ASUS GT740-2GD3-CSM 2GB is a 75W card so it does not need an AUX power connection and works fine with 305W Tower power supply. . The system turning on when you connect the power is a BIOS setting (power restore). Shop today for your everyday business needs. JSM Computers StoreVisit Store. Dell Optiplex 755 Memory; Dell Optiplex 760 Memory; Dell Optiplex 780 Memory; Dell Optiplex Gx520 Memory; Dell Optiplex Gx620 Memory;. Shop today for your everyday business needs. I was told by a freind ot pick up some Hyper X fury ram howver, im not sure if it would be compatible and what modules i should get i have 8gb in right now, in 2 x 4 sticks and i hav e2 slots left i have been told that the max speed. I have the BSOD: Hardware Malfunction: Call your hardware vendor for support, NMI: Parity check/memory parity error, System has halted. DDR3 and DDR3L are socket compatible, however, It is NOT compatible with computers using 4th Generation Intel (Haswell) processors, which exclusively support 1. You'll get MUCH WORSE performance. Reseat the Hard Drive Cables. 96 shipping. The CPU-Z program would tell you how fast it is or isn't running. Yes, 6GB ram would work. Fast & Free shipping on many items! Skip to main content. We don't know when or if this item will be back in stock. 97Shop Amazon for A-Tech 8GB KIT (4 x 2GB) for Dell Optiplex 740 745c 755 DT/MT/SFF 760 DT/MT/SFF 760 Series (Desktop Mini Tower and Small Form Factor) DIMM DDR2 Non-ECC PC2-6400 800MHz RAM Memory and find millions of items, delivered faster than ever. Get it by Mon, Nov. 8V Non-ecc Unbuffered Desktop MemoryDedicated VRAM. exe. Model #: BD2G667MD13DE21935;Dell OptiPlex 5000 Desktops Ports and Specifications. Hi, I have Dell Optiplex 755 DT model. Instructions and demonstration of installing RAM Memory in a Dell desktop, model Optiplex GX755 small form factor. Hello everyone, I would like to give a last upgrade to my old Optiplex 755 buying 8 Gbyte of. 8 Ghz, 2 GB RAM, DVD. 99. Refurbished Dell Optiplex 755 USFF Core 2 Duo 80gb HD 2gb ram All-In-One with 20" LCD Windows 7 Professional. DELL OptiPlex 755, 3. 2 Posts. Buy system specific Dell OptiPlex 755 DT/MT/SFF Desktop Memory/RAM and SSD upgrades from KingstonMemoryShop. 24,960. Low Cost Delivery Low Prices 100% Safe & SecureThe Dell OptiPlex 755 offers enhanced management and control with Intel ® vPro TM processor technology, allowing IT staff excellent flexibility, high efficiency and reduced desk-side troubleshooting. 1GB Dell Optiplex 755 GX520 GX620 Memory DDR2 PC2-5300 667MHz RAM DIMM . Thanks for your help so far, I really appreciate it. OptiPlex 755 User's Guide - iAMT Publish date: 20 APR 2008. In Stock Best Buy Only. I have to have a small form factor (or similar) to fit under the counter in my business. 800MHz FSB, Intel Q35 Express Chipset. responsiveness and support of 64-bit computing" The Dell OptiPlex 755 gives you advanced security options to help keep your data secure real-time. (30) 30 product ratings - Dell OptiPlex 755 SFF Motherboard PU052 E6550 CPU 2. Works in ALL 755 models. 00. $14. The energy-efficient and fully customizable 745 can scale to suit your business and is supported by a. These indicators can be audible beeps, power buttons that display different states and colors, specific diagnostic LEDs, or a combination of these. Crucial's site has you enter the PC model. Set personal price drop alerts!Dell Optiplex 7010 Business Desktop Computer (Intel Quad Core i5-3470 3. Processor Type:Dell Optiplex 745. 99. the manufactured ram clock speed is 800 mhz but it is running at 398 mhz can i make it run nearly 800 mhz through anyway. She has asked me to see if it needs any updates or improvements. Refurbished Dell OptiPlex 755 [Microsoft Authorized Recertified] Tower Desktop PC with Intel Core 2 Duo E8500 (3. Please let me know what settings have to be set/changed in the BIOS etc so that I can work with. 77 in. which means it is a Dell Optiplex 755, with a 2. C $67. 22-04-2013 09:00 AM. Options:160 GB HDD Hard Drive Windows with XP Pro SP2 or Vista Business. My Optiplex 755 Gaming / HTPC setup is now complete. However, it should work for what you want to use it for. etc. Buy system specific Dell OptiPlex 755 Small Form Factor [SFF] Desktop Memory/RAM and SSD/Hard Drive upgrades from MemoryCow. Benefits charity. 99. which means it is a Dell Optiplex 755, with a 2. 0. Windows 7 8 and 10 work fine on this model. They are doing everything they can to force you to go online and use a microsoft account. OptiPlex. com: Dell OptiPlex 755 MEMORY 1-16 of 123 results for "Dell OptiPlex 755 MEMORY" Results Amazon's Choice 8GB 4X2GB Dell OptiPlex 755 Series Desktop/PC DDR2 PC2-5300 RAM Memory 129 $3162 Save 6% Details FREE delivery Mon, Sep 11 Or fastest delivery Sep 7 - 8 More Buying Choices $29. Personally I would go with ddr3 because the 8 gb sticks are less expensive than ddr2 8 gb (if they even exist) Also they are faster. 5-inch internal SSD • SATA 6. 66GHz, either 2GB or 4GB of DDR2 RAM, and 250GB storage capacity. Compare. The product is refurbished and is fully functional. Compare. $170. They are labeled as follows. In over 30 years of working with computers I have NEVER cleaned Ram Slots nor have I ever needed to. Below memory compatibility will be DDR3 unless stated otherwise. C $27. 23 gigs of RAM. Finally, I'd look to getting a low profile graphics card with no more than a 25 watt max power draw. Browse CommunityDell OptiPlex 755 Memory: Refine Results. With 1333FSB Likely the ram will clock down to 800MHZ aka PC2 6400. Dell OptiPlex computers have a long history of integrated diagnostic indicators that provide important insight when a computer fails the Power On Self-Test ( POST). Free shipping. Should be 16 gb max source :more info here. 8. Data Security and Recovery with RAID 1 support ensures real time redundancy for data - helping to keep your business. 99. I really don't know that you'll notice a difference in RAM speed between 667MHz and 800MHz simply using the PC. Slots: 4. minimum speed is 333 mhz and that system ram is shared with INTEL Graphics. Select the department you want to search in. Hello, I'm planning to upgrade my OptiPlex 755. View PDF. Feb 14, 2012 165 0 18,690. It is interesting that you’re only seeing 7. Refurbished Dell Optiplex 755 Desktop - 2. 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. This is wrong for this system and other Optiplex/Dimension systems etc. The Optiplex 755 if you have the latest BIOS from Dell supports E0 stepping CPUs. They are fast, quiet, and cool, very stable with Windows 7 X64. 99. The biggest issue with Dell memory is the need for low density memory. However, is says the minimum watt supply requirement for this GPU is 400 Watts. We have a Dell OptiPlex 755 where the diagnostic lights will often show a 3 4 pattern. What I would do, as budget allows is: First, upgrade the RAM. BUT, it only allows the bank of 2s to be used. DELL COMPUTER OPTIPLEX 755 2. FREE delivery Aug 9 - 11 . Memory Recommendations for Optiplex 755 SFF. $35. System CPU Type. OptiPlex 755 upgrade. Solved! Go to Solution. 4GIGS is the Limit for 32 bit Windows. Know that the 780 is ten years old. Here is the situation: Optiplex 755 with Core 2 Duo E8400 CPU, Processor ID 10676. 0 to 2. PC2 8500 is the fastest DDR2 Ram available. OptiPlex. 1GB DDR2 667 Dell Optiplex 330 740 745 745c Memory RAM. Test Ram one stick at a time. But your money would be better spent on a newer model that supports current ram and hardware as well as coming with windows 10. Also read up on pagefile. #5. 1GB RAM Upgrade for HP Pavilion Slimline s7627c, s7620nl, s7320n, s7400n A99. 1GHz quad-core processor 16GB memory - For multitasking power, supports up to 16GB 2TB SATA hard drive has plenty of space to store your digital albums, music library and rich media files Enhanced viewing with the integrated Intel HD 2000 graphics DVD-ROM drive - watch. None / 128 MB / 256 MB DDR2 / 256 MB DDR2. GPU: You don't need a super high end one. 99. 2GHz, 16GB RAM, 2TB HDD, USB 3. Dell Optiplex 745 Compact Computer. 0 out of 5 stars 3 $11. Scott_130; Feb 27, 2018; Windows 7; Replies 6 Views 2K. Publish date: 20 APR 2008. The CPU upgrade is the area I'd appreciate some advice. Free Shipping. I also specified 2 GB of PC2-6400 800Mhz of DDR2 memory as part of the original configuration that was supplied by Dell. 86 sold. Learn how to set up your Dell OptiPlex 755 desktop computer with this comprehensive guide. Search Newegg. Processor. 11-10-2014 06:00 AM. The My Computer properties show 3. View PDF. The Dell Optiplex 755 SFF originally comes with 4 gigs of RAM, 1 gig stick in each slot, but mine only has 3 since it was a gift. Buy A-Tech 4GB (2X 2GB) Memory RAM Kit for Dell OptiPlex 755, 745, 740, GX620, GX520, 360, 330, 160, FX160, (MT, DT, SFF, USFF) - DDR2 667MHz PC2-5300 Non-ECC DIMM Modules: Memory - Amazon.