Jump to content
Search In
  • More options...
Find results that contain...
Find results in...
Bob Jim

Can I Combine a 4GB Stick and an 8GB Stick?

Recommended Posts

Posted · Original PosterOP

Hi,

 

After experiencing several crashes with the MEMORY_MANAGEMENT error and running memtest86, I have determined that one of my two 4GB sticks of DDR4 RAM is broken (way out of warranty). I was going to replace it with another 4GB stick (just £15 on amazon), but noticed that the 8GB stick was only £10 more. If I use the exact same RAM (Crucial Ballistix "Sport" DDR4 2400Mhz White), but 1 new 8GB stick and 1 old 4GB stick, will I see any compatibility or performance issues? I could do with the extra RAM capacity.

 

Thanks for any help.

Link to post
Share on other sites

You're getting into sketchy territory there.

If you firmware decides to support that configuration, you can run it. But you will lose out on Dual channel memory performance improvements.

Link to post
Share on other sites

It'll be okay, idk about performance differences but it'll most likely work.

 

source- replying using a computer with 1 4GB and 1 8GB stick 

also I've mixed up the ram in lots of systems with different capacities per stick and never seen any impacts, but maybe others have had different experiences


Specs: CPU: AMD Ryzen R5 1600AF, GPU: Sapphire R9 Fury, RAM: 16 GB Trident Z Royal @3000Mhz , Motherboard: ASRock B450M PRO4, Storage: 1x 500Gb Intel 545s 500Gb SSD (boot) + 1x Samsung 860 QVO 1Tb SSD (storage), Case: Thermaltake Core V21, Cooler: CoolerMaster Hyper 212 Turbo LED

Link to post
Share on other sites
Posted · Original PosterOP
1 minute ago, Trinopoty said:

You're getting into sketchy territory there.

If you firmware decides to support that configuration, you can run it. But you will lose out on Dual channel memory performance improvements.

How significant are dual channel performance improvements?

Link to post
Share on other sites
2 minutes ago, Bob Jim said:

How significant are dual channel performance improvements?

I can't give you figures because I don't know them. I'd wager that dual channel speeds up memory access by about 50% under certain conditions.

Link to post
Share on other sites

Yeah that should be fine. :)


PC SPECS: CPU: Intel Core i7 3770k @4.4GHz - Mobo: Asrock Extreme 4 (Z77) - GPU: MSI GeForce GTX 680 Twin Frozr 2GB - RAM: Crucial Ballistix 2x4GB (8GB) 1600MHz CL8 + 1x8GB - Storage: SSD: Sandisk Extreme II 120GB. HDD: Seagate Barracuda 1TB - PSU: be quiet! Pure Power L8 630W semi modular  - Case: Corsair Obsidian 450D  - OS: Windows 7

Link to post
Share on other sites

It will work just fine.  It will downclock to the lowest common denominator for stability.  You will have dual channel performance, which can be significant depending on the software - but either way single channel on either platform (Intel or AMD) is degrading on performance.


Workstation Laptop: Dell Precision 7540, Xeon E-2276M, 32gb DDR4, Quadro T2000 GPU, 4k display

Ryzen Rig 2: ASrock B450 Pro4 ATX, Ryzen 7 1700 @ 4.2ghz all core 1.4vCore, Sapphire R9 Fury Tri-X Nitro 4gb HBM (+100mhz core clock), 16gb (2x8) 3600mhz V-Color Skywalker (or 4x8gb DDR4 2666mhz for large tasks), Corsair HX850 PSU, Custom Loop 2x240mm + 1x120mm radiator, 128gb Patriot Scorch NVMe Win 10 boot drive, 500gb Samsung 840 EVO SSD, CoolerMaster HAF XM Case.  DSI 90-Key Mechanical Keyboard w/ Cherry Red switches, Zalman ZM-GM1 mouse, Hannspree HF207 and Acer AL2016W monitors

https://www.3dmark.com/3dm/37004594?

Ryzen Rig 1: ASUS B350-PRIME ATX, Ryzen 7 1700, Sapphire R9 Fury Tri-X Nitro 4gb HBM, 16gb (2x8) 3200mhz V-Color Skywalker, ANTEC Earthwatts 750w PSU, MasterLiquid Lite 120 AIO cooler in Push/Pull config as rear exhaust, 250gb Samsung 850 Evo SSD, Patriot Burst 240gb SSD, Cougar MX330-X Case.  Zalman K600S keyboard, Zalman ZM-GM1 mouse, Acer XF270HU 2560x1440 144hz IPS monitor

https://www.3dmark.com/3dm/37628874?

Dwight: The Mixed Metals Loop Media Center.  Ask me about it.  Currently decommissioned to move to an mATX setup on a new MOBO once I pick one out

Schrute: ASUS M5A99FX Pro R2.0, FX 8350, 2x Gigabyte HD 7850 2gb GPUs in crossfire, 16gb (4x4) Corsair Vengeance DDR3 1600mhz, Sparkle/FSP 650w PSU, PCCOOLING 160w TDP air cooler, 60gb Patriot SSD Win 10 boot drive, 1tb WDBlack HDD, Rosewill Nautilus 1.0 case.  Logitech Wireless Keyboard and Mouse, Roku 55" 4k TV

Micro Form Factor Dell OptiPlex 3040: Dell 0MGK50 A02, i3-6100T, 2x4gb DDR3 1600, Team Group 120gb SSD, 500gb Seagate 7mm HDD attached storage, Windows 10 Pro, Logitech K400+, USB Wifi adapter all vesa mounted to the back of a 37" 1080p TV for form factor in the kitchen

Linux Box: Toshiba Laptop, i7 620M, NVS graphics, 2gb ram tinker toy at the moment.  Running Manjaro at the moment

APU Laptop: I need to clean this things TIM up so it can boot into Windows 7 for more than 5 minute before overheating at idle, it has things, I just haven't been on it in 2 years or so

Link to post
Share on other sites
19 hours ago, Bob Jim said:

Hi,

 

After experiencing several crashes with the MEMORY_MANAGEMENT error and running memtest86, I have determined that one of my two 4GB sticks of DDR4 RAM is broken (way out of warranty). I was going to replace it with another 4GB stick (just £15 on amazon), but noticed that the 8GB stick was only £10 more. If I use the exact same RAM (Crucial Ballistix "Sport" DDR4 2400Mhz White), but 1 new 8GB stick and 1 old 4GB stick, will I see any compatibility or performance issues? I could do with the extra RAM capacity.

 

Thanks for any help.

Should work fine.

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now


×