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OWC

OWC 16GB (2 x 8GB) PC19200 DDR4 2400MHz 260pin SO-DIMMs Memory Ram Upgrade Compatible with 27" iMac w/Retina 5K (Mid 2017) and Compatible PCs (OWC2400DDR4S16P)

    • Based on 1,786 reviews
Condition: New
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Eligible for Return, Refund or Replacement within 30 days of receipt

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Availability: Only 9 left in stock, order soon!
Fulfilled by OWC (Other World Computing)
Arrives May 25 – May 27
Order within 8 hours and 7 minutes
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Size: 16GB


Style: 2 x 8GB


Features

  • OWC 16.0GB UPGRADE: Consists of Two 8GB PC19200 DDR4 2400MHz SO-DIMM Memory, 260-Pin, 1.2 Volts, Non-registered, Non-ECC, Fully compliant with JEDEC specifications, ROHS compliant, warranty safe upgrade; Backed by OWC Memory Lifetime Limited Warranty including the OWC Lifetime Advanced Replacement Program
  • COMPATIBLE WITH: 2017 iMac: iMac w/Retina 5K display (27 inch mid 2017) Model ID: iMac18,3 (3.4GHz & 3.5GHz & 3.8GHz Core i5 & 4.2GHz Core i7)
  • COMPATIBLE WITH: 2017 iMac 21.5-inch: Model ID: iMac18,2 iMac w/Retina 4K display, 21.5-inch Mid 2017, (3.0GHz & 3.4GHz Core i5 & 3.6GHz Core i7); Model ID: iMac18,1 iMac Mid 2017 2.3GHz Core i5
  • COMPATIBLE WITH: Select PC Laptop, PC Notebook, All in One Computers, NAS, Synology, POS systems
  • INCREASED PERFORMANCE: Memory Upgrades are the Most Effective and Easy Way to Boost the Performance in Your Mac Pro
  • COMPATIBLE PART NUMBERS: CT8G4S24AM, CT2K8G4S24AM, KVR24S17S8/8, CT8G4SFS824A, CT2K8G4SFS824A, KCP424SS8/8, HMA81GS6AFR8N-UH, M471A1K43BB1-CRC, M471A1K43CB1-CRC, M474A1G43DB1CRC, HMA81GS6AFR8NUH
  • INDUSTRY LEADING: Consumer Friendly Advanced Replacement Program and Limited Lifetime Warranty, which Includes Free Tech Support by Other World Computing

Brand: OWC


Computer Memory Size: 16 GB


RAM Memory Technology: DDR4


Memory Speed: 1200 MHz


Compatible Devices: Desktop


RAM: ‎16 GB DDR4


Memory Speed: ‎2


Brand: ‎OWC


Series: ‎OWC2400DDR4S16P


Item model number: ‎OWC2400DDR4S16P


Item Weight: ‎0.811 ounces


Product Dimensions: ‎19.69 x 19.69 x 11.02 inches


Item Dimensions LxWxH: ‎19.69 x 19.69 x 11.02 inches


Color: ‎2 x 8GB


Computer Memory Type: ‎DDR4 SDRAM


Voltage: ‎1.2 Volts


Manufacturer: ‎Other World Computing


Country of Origin: ‎Taiwan


Is Discontinued By Manufacturer: ‎No


Date First Available: ‎June 8, 2017


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: May 25 – May 27

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Similar Products

Top Amazon Reviews

    • Just what I needed!
Size: 32 GB Style: 2 x 16GB
My 2017 IMac was moving quite slow lately. It was hard to get things done because I was waiting forever for pages to load. I knew that I had the model that was very challenging to upgrade the ram, but DIY was the most reasonable solution. I watched several videos while waiting for this ram to arrive, but the instruction video that was left with the product images was the most detailed. I’ve never fully disassembled a computer before, so I was nervous, but the video was so easy to follow that it was not bad at all. I managed to successfully install 32gm of ram into this old IMac and now it’s working better than ever. ... show more
Reviewed in the United States on January 6, 2024 by L. Williams
    • Install and enjoy
Size: 8GB Style: 1 x 8GB
Works perfectly!
Reviewed in the United States on March 27, 2024 by Joe Agueci
    • Awesome addition
Size: 128GB Style: 4 x 32GB
Great replacement for my 2019 iMac and so easy to install. I have several RAM heavy apps that this helps speed up my work flow. OWC is an awesome Brand sometimes expensive but worth it!
Reviewed in the United States on December 28, 2023 by K15-0508
    • So far so good, easy install in iMac 2017 27 inch Retina 3.4 ghz
Size: 16GB Style: 2 x 8GB
I have a mid-2017 iMac 27 inch Retina with the 3.4 GHz Quad-Core Intel Core i5. I just upgraded the memory by replacing the OEM 8gb (2x4gb) with 32gb of OWC RAM (4x8gb). Some people have reported problems following the upgrade - e.g. not being able to reboot, etc. Just one data point, but I didn't have any problems at all. Shut down the computer, pulled out the OEM cards, plugged in the four new OWC cards, and turned the power back on. Will update later if the memory fails in the future - a problem others reported. Fingers crossed, but so far, the upgrade was simple and fast. NOTE that the computer was generally a little "slow" immediately following the reboot (when starting an application, for example), but that apparently is normal as various information is re-initialized. After a few minutes, performance was back to normal, and much better with several apps open because of the additional memory. IMPORTANT: Note that according to Apple, the 3.4 ghz processor maxes out at 32gb total. It's a little hard to find that fact online, but it is a limitation specifically for the 3.4 ghz processor. The 3.5 ghz and above can supposedly accommodate 64gb. ... show more
Reviewed in the United States on October 7, 2022 by ManBehindTheCurtain
    • Excellent product.
Size: 16GB Style: 2 x 8GB
The memory modules were easily installed and were automatically picked up by the Mac OC operating system.
Reviewed in the United States on November 28, 2023 by bobcat127
    • iMac now crashing
Size: 32 GB Style: 2 x 16GB
Since I installed 2 more rams of memory in my iMac (Retina 5K, 27-inch, 2017), it now periodically just crashes. I have the error report but it means nothing to me. I assume my issue is related to this installation. Would anyone have any suggestions? panic(cpu 1 caller 0xffffff801d7198aa): [iokit.IODMACommand]: element modified after free (off:24, val:0x0000010000000000, sz:120, ptr:0xffffffa4c5c14e10) 24: 0x0000010000000000 Panicked task 0xffffffa991ae79f0: 7 threads: pid 2319: com.apple.WebKit Backtrace (CPU 1), panicked thread: 0xffffffae57bf2000, Frame : Return Address 0xffffff80c9a3abd0 : 0xffffff801ce81c8d 0xffffff80c9a3ac20 : 0xffffff801cfe1596 0xffffff80c9a3ac60 : 0xffffff801cfd0963 0xffffff80c9a3acb0 : 0xffffff801ce21a70 0xffffff80c9a3acd0 : 0xffffff801ce8205d 0xffffff80c9a3adf0 : 0xffffff801ce81816 0xffffff80c9a3ae50 : 0xffffff801d715163 0xffffff80c9a3af40 : 0xffffff801d7198aa 0xffffff80c9a3b3b0 : 0xffffff801ceeb8a9 0xffffff80c9a3b410 : 0xffffff801d64f497 0xffffff80c9a3b440 : 0xffffff801d64cc51 0xffffff80c9a3b4a0 : 0xffffff7fb5dea857 0xffffff80c9a3b4c0 : 0xffffff7fb5dfc9fb 0xffffff80c9a3b510 : 0xffffff7fb5da92bd 0xffffff80c9a3b530 : 0xffffff7fb5dfa00b 0xffffff80c9a3b550 : 0xffffff7f9dc66f3f 0xffffff80c9a3b5b0 : 0xffffff7f9dc30d31 0xffffff80c9a3b5e0 : 0xffffff7f9dc434ac 0xffffff80c9a3b630 : 0xffffff7f9dc437e5 0xffffff80c9a3b6d0 : 0xffffff7fb5ded368 0xffffff80c9a3b710 : 0xffffff7fb5ded719 0xffffff80c9a3b9b0 : 0xffffff7f9dc34252 0xffffff80c9a3b9e0 : 0xffffff7fb5dee8f1 0xffffff80c9a3ba70 : 0xffffff7fb5dec94b 0xffffff80c9a3bad0 : 0xffffff7fb5dec741 0xffffff80c9a3bb20 : 0xffffff7fb5deb81d 0xffffff80c9a3bb60 : 0xffffff801d683a8c 0xffffff80c9a3bcc0 : 0xffffff801cf872e6 0xffffff80c9a3bdd0 : 0xffffff801ce5c9ab 0xffffff80c9a3be60 : 0xffffff801ce731f9 0xffffff80c9a3bef0 : 0xffffff801cfb35aa 0xffffff80c9a3bfa0 : 0xffffff801ce22256 Kernel Extensions in backtrace: com.apple.iokit.IOAcceleratorFamily2(462.8)[F0D1B5AF-356A-3F86-8829-8F00218602CB]@0xffffff7fb5da6000->0xffffff7fb5e10fff dependency: com.apple.driver.AppleMobileFileIntegrity(1.0.5)[2B96E04B-E2A5-3296-AF14-6A766880A652]@0xffffff801e5a1000->0xffffff801e5c2fff dependency: com.apple.iokit.IOGraphicsFamily(597)[BBEE13AB-2291-37D9-AAE4-9E565E8950A5]@0xffffff7fb5f3f000->0xffffff7fb5f6dfff dependency: com.apple.iokit.IOPCIFamily(2.9)[654ABF9D-EB24-3B64-AB1C-EC2AC8357192]@0xffffff801fa24000->0xffffff801fa4ffff dependency: com.apple.iokit.IOReportFamily(47)[5578189C-7C1D-3158-B357-F8D6A216DCE1]@0xffffff801fa61000->0xffffff801fa63fff dependency: com.apple.iokit.IOSurface(302.14)[F0BF8EFA-AA35-37B5-B3AB-A8BCF5E62024]@0xffffff801fb94000->0xffffff801fbb0fff com.apple.kext.AMDRadeonX4000(4.0.8)[B7BDCB57-0EF9-37E9-B724-29D96491A4FB]@0xffffff7f9dc2b000->0xffffff7f9e07dfff dependency: com.apple.iokit.IOAcceleratorFamily2(462.8)[F0D1B5AF-356A-3F86-8829-8F00218602CB]@0xffffff7fb5da6000->0xffffff7fb5e10fff dependency: com.apple.iokit.IOGraphicsFamily(597)[BBEE13AB-2291-37D9-AAE4-9E565E8950A5]@0xffffff7fb5f3f000->0xffffff7fb5f6dfff dependency: com.apple.iokit.IOPCIFamily(2.9)[654ABF9D-EB24-3B64-AB1C-EC2AC8357192]@0xffffff801fa24000->0xffffff801fa4ffff dependency: com.apple.iokit.IOSurface(302.14)[F0BF8EFA-AA35-37B5-B3AB-A8BCF5E62024]@0xffffff801fb94000->0xffffff801fbb0fff Process name corresponding to current thread (0xffffffae57bf2000): com.apple.WebKit.WebContent Mac OS version: 21F79 Kernel version: Darwin Kernel Version 21.5.0: Tue Apr 26 21:08:22 PDT 2022; root:xnu-8020.121.3~4/RELEASE_X86_64 Kernel UUID: 3C587984-4004-3C76-8ADF-997822977184 KernelCache slide: 0x000000001cc00000 KernelCache base: 0xffffff801ce00000 Kernel slide: 0x000000001cc10000 Kernel text base: 0xffffff801ce10000 __HIB text base: 0xffffff801cd00000 System model name: iMac18,3 (Mac-BE088AF8C5EB4FA2) System shutdown begun: NO Panic diags file available: YES (0x0) Hibernation exit count: 0 System uptime in nanoseconds: 340686258085148 Last Sleep: absolute base_tsc base_nano Uptime : 0x000135da33649f64 Sleep : 0x0000000000000000 0x0000000000000000 0x0000000000000000 Wake : 0x0000000000000000 0x000000107080ddae 0x0000000000000000 Compressor Info: 5% of compressed pages limit (OK) and 18% of segments limit (OK) with 16 swapfiles and OK swap space Zone info: Zone map: 0xffffff99901f0000 - 0xffffffb9901f0000 . PGZ : 0xffffff99901f0000 - 0xffffff99951f1000 . VM : 0xffffff99951f1000 - 0xffffff9e612bd000 . RO : 0xffffff9e612bd000 - 0xffffff9ffa856000 . GEN0 : 0xffffff9ffa856000 - 0xffffffa4c6922000 . GEN1 : 0xffffffa4c6922000 - 0xffffffa9929ef000 . GEN2 : 0xffffffa9929ef000 - 0xffffffae5eabc000 . GEN3 : 0xffffffae5eabc000 - 0xffffffb32ab89000 . DATA : 0xffffffb32ab89000 - 0xffffffb9901f0000 Metadata: 0xffffff805b6df000 - 0xffffff807b6df000 Bitmaps : 0xffffff807b6df000 - 0xffffff808a6df000 last started kext at 217245416091: @filesystems.smbfs 4.0 (addr 0xffffff7fb6338000, size 483328) last stopped kext at 335917090967: >!AThunderboltEDMSink 5.0.3 (addr 0xffffff7fb5bc7000, size 32768) loaded kexts: @filesystems.smbfs 4.0 >!ATopCaseHIDEventDriver 5450.8 >AudioAUUC 1.70 >!APlatformEnabler 2.7.0d0 >X86PlatformShim 1.0.0 >AGPM 129 >!AUpstreamUserClient 3.6.9 @kext.AMDFramebuffer 4.0.8 @filesystems.autofs 3.0 @kext.AMDRadeonX4000 4.0.8 >!AHDA 340.2 @kext.AMDRadeonServiceManager 4.0.8 >!AGraphicsDevicePolicy 6.5.7 >eficheck 1 >!A!IKBLGraphics 18.0.7 @AGDCPluginDisplayMetrics 6.5.7 >!A!IKBLGraphicsFramebuffer 18.0.7 >pmtelemetry 1 |IOUserEthernet 1.0.1 >usb.!UUserHCI 1 >!AHV 1 >!ADiskImages2 126.100.13 @kext.AMD9500!C 4.0.8 >!A!ISlowAdaptiveClocking 4.0.0 >!ASMCLMU 212 >!A!IPCHPMC 2.0.1 >!AGFXHDA 140.3 >!AThunderboltIP 4.0.3 >!AMCCSControl 1.16 >!AFileSystemDriver 3.0.1 @filesystems.tmpfs 1 @filesystems.lifs 1 @filesystems.hfs.kext 583.100.10 @BootCache 40 @!AFSCompression.!AFSCompressionTypeZlib 1.0.0 @!AFSCompression.!AFSCompressionTypeDataless 1.0.0d1 @filesystems.apfs 1934.121.2 >AirPort.BrcmNIC 1400.1.1 >!ASDXC 3.2.1 |!ABCM5701Ethernet 11.0.0 >!AAHCIPort 351.100.4 @private.KextAudit 1.0 >!AACPIButtons 6.1 >!ARTC 2.0.1 >!ASMBIOS 2.1 >!AACPIEC 6.1 >!AAPIC 1.7 @!ASystemPolicy 2.0.0 @nke.applicationfirewall 402 |IOKitRegistryCompatibility 1 |EndpointSecurity 1 @Dont_Steal_Mac_OS_X 7.0.0 @kec.!AEncryptedArchive 1 >driverkit.serial 6.0.0 |IOSerial!F 11 >!AHIDKeyboard 228.2 >!AMultitouchDriver 5450.14 >!AInputDeviceSupport 5450.4 >!AHS!BDriver 5450.8 >IO!BHIDDriver 9.0.0 @kext.triggers 1.0 @kext.AMDRadeonX4200HWLibs 1.0 >DspFuncLib 340.2 @kext.OSvKernDSPLib 529 @kext.AMDRadeonX4000HWServices 4.0.8 >!AGraphicsControl 6.5.7 >!ASMBusPCI 1.0.14d1 |IOAccelerator!F2 462.8 |IO!BSerialManager 9.0.0 |IO!BPacketLogger 9.0.0 |IO!BHost!CUSBTransport 9.0.0 |IO!BHost!CUARTTransport 9.0.0 |IO!BHost!CTransport 9.0.0 >IO!BHost!CPCIeTransport 9.0.0 |IOAVB!F 1040.6 @plugin.IOgPTPPlugin 1040.3 |IOEthernetAVB!C 1.1.0 |CSR!BHost!CUSBTransport 9.0.0 |Broadcom!BHost!CUSBTransport 9.0.0 |Broadcom!B20703USBTransport 9.0.0 >!AIPAppender 1.0 @kext.AMDSupport 4.0.8 @!AGPUWrangler 6.5.7 |IOSlowAdaptiveClocking!F 1.0.0 @!AGraphicsDeviceControl 6.5.7 >X86PlatformPlugin 1.0.0 >IOPlatformPlugin!F 6.0.0d8 >!AHDA!C 340.2 |IOHDA!F 340.2 |IONDRVSupport 597 |IOAudio!F 340.2 @vecLib.kext 1.2.0 >!AThunderboltDPOutAdapter 8.5.1 |IOGraphics!F 597 >!ASMBus!C 1.0.18d1 |IOAHCIBlock!S 333.100.3 >usb.IOUSBHostHIDDevice 1.2 >usb.cdc 5.0.0 >usb.networking 5.0.0 >usb.!UHostCompositeDevice 1.2 >!AThunderboltPCIUpAdapter 4.1.1 >!AThunderboltPCIDownAdapter 4.1.1 >!AThunderboltDPInAdapter 8.5.1 >!AThunderboltDPAdapter!F 8.5.1 >!AHPM 3.4.4 >!A!ILpssI2C!C 3.0.60 >!A!ILpssDmac 3.0.60 >!ABSDKextStarter 3 |IOSurface 302.14 @filesystems.hfs.encodings.kext 1 >!AXsanScheme 3 >!AThunderboltNHI 7.2.81 |IOThunderbolt!F 9.3.3 |IO80211!FLegacy 1200.12.2b1 |IOSkywalk!F 1.0 >corecapture 1.0.4 |IONVMe!F 2.1.0 >mDNSOffloadUserClient 1.0.1b8 >!A!ILpssI2C 3.0.60 >!A!ILpssGspi 3.0.60 >usb.!UXHCIPCI 1.2 >usb.!UXHCI 1.2 |IOAHCI!F 297 >usb.!UHostPacketFilter 1.0 |IOUSB!F 900.4.2 >!AEFINVRAM 2.1 >!AEFIRuntime 2.1 |IOSMBus!F 1.1 |IOHID!F 2.0.0 |IOTimeSync!F 1040.3 |IONetworking!F 3.4 >DiskImages 493.0.0 |IO!B!F 9.0.0 |IOReport!F 47 $quarantine 4 $sandbox 300.0 @kext.!AMatch 1.0.0d1 |CoreAnalytics!F 1 >!ASSE 1.0 >!AKeyStore 2 >!UTDM 533.120.2 |IOUSBMass!SDriver 210.120.3 |IOSCSIBlockCommandsDevice 456.121.3 |IO!S!F 2.1 |IOSCSIArchitectureModel!F 456.121.3 >!AMobileFileIntegrity 1.0.5 $!AImage4 4.2.0 @kext.CoreTrust 1 >!AFDEKeyStore 28.30 >!AEffaceable!S 1.0 >!ACredentialManager 1.0 >KernelRelayHost 1 |IOUSBHost!F 1.2 >!UHostMergeProperties 1.2 >usb.!UCommon 1.0 >!ABusPower!C 1.0 >!ASEPManager 1.0.1 >IOSlaveProcessor 1 >!AACPIPlatform 6.1 >!ASMC 3.1.9 |IOPCI!F 2.9 |IOACPI!F 1.4 >watchdog 1 @kec.pthread 1 @kec.Libm 1 @kec.corecrypto 12.0 ... show more
Reviewed in the United States on July 19, 2022 by MM
    • It works
Size: 32 GB Style: 2 x 16GB
Opening the MacBook Pro was the easiest of the Mac series. Placed and it works!
Reviewed in the United States on February 29, 2024 by Tammy Schaapherder
    • Good replaement
Size: 32 GB Style: 2 x 16GB
Used this to increase memory of my iMac. Works flawlessly.
Reviewed in the United States on February 18, 2024 by jrmjr

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