Memtest 86

Hello I've got some new Ram recentlly, and I am trying to tweak them a little, for this I use Ryzen DRAM Calculator, However it's numbers prove extremly unstable (>100 errors in first pass) - the RAM is stable (no errors) when XMP is on, with everything on auto. so found what seems like a great guide here: (original redit post with document: following this information, I begin to manually tweak timings - I leave voltages, impedances/resistance values (CAD BUS, procODT, RTT) on whatever the calculator gave, and than I just manualy entered timings (the ones used by XMP anyway, so that it's still running those without being on Auto) - everything stable. Afterwards, I change my tCL from 15>14, and I got again a huge error count in first 15 minutes of running mem test, so following troubleshooting instructions in previous guide, I managed to bring error count down to 2-3 errors in 2/3 pass, by increasing DRAM voltage (1,35->1,38), but no further. The guide says quote: AddrCmdDrv or AddrCmdDrvStr(en): Address/Command Drive Strength/Impedance. The resistance on the following CPU (or memory controller?) pins: address, RAS, CAS, WE, bank, parity. Theoretically, then, raising it can increase stability of tight timings. So I've increased said CAD impedance from 20 ohm (recomended by DRAM Calculator) -> 30 ohm. Now interesting part begins - I ran Memtest 86 for little more than 2 hours (3 passes - no errors), then I stoped the test to do some work on my PC, two hours later I started test again, made apsolutelly no changes in BIOS, just to run bassically the last 4th pass, guess what, I get 3 errors on test 7 on very first pass, there is no point in running itg further so I stoped and began my research on what could happen, I found nothing really. Did anyone experience something simillar? This gives the question, How relible is Memtest 86?, if it gives errors seeminglly at random, first run - 3 passes - no errors; second round - first pass - 3+ errors. If it is reliable, how long or how much do I need to run it to verify stability? , and I mean betwen changing things (I've just started, there are more than 40 timings to tweak, and already I've run it a dozen times, I fear in the end I will end up with more damage than good becouse I run a stresstest software so much, plus it is extreemly time consuming), and finally when everything is done, how long to run (how many passes) to be apsolutelly sure everything is stable? Also are there any alternatives, what do you use when OC-ing memory? Thank you

Maybe try burning another copy of a newly downloaded iso image file, but I'm running out of things to try and get this booted. [Update] So I tried a different USB stick and same problem and I also tried another burnt CD at the lowest speed possible. But guess what, I popped a freshly downloaded nas4free cd in and it has booted first time no problem. I would rather use FreeNas so any more suggestions? #7 Okay, I have these suggestions for now. 1) To prevent you from spinning your wheels you should run MemTest 86+ on your system for three complete passes. This will take some time and you can download it from the internet. It comes as a bootable iso so you can boot it and run it.2) Please list your system hardware.3) If you can run 64 bit (based on your CPU), then you should run the 64 bit version. Please ensure you are running the correct version. I'll know based on your answer to the above question. Also if you have less than 4GB or RAM, you should run the 32 bit version.4) When you loaded the USB stick from the USB CD drive, did you have any problems loading it?5) Since it appears you were able to load the FreeNAS image directly to a USB Flash drive earlier, you can do that again if it works for you. Nas4Free is a good product as well and well supported by it's members. But if you are having problems running FreeNAS, then I would think you would end up having problems with Nas4Free at some point in time. #8 Thanks for the suggestions, I will try MemTest this evening but I can probably answer some of the other stuff now: 2) HP Microserver N54l (AMD Turion 2.2GHz) , 2GB ECC Ram, 2 x 3TB Toshiba HDD in hardware Raid 1. I know it says not to use hardware raid but I decided against wanting to use ZFS as I had concerns about not being able to increase the storage pool once created if I add more drives

Date de publication : 11/03/2005 , Date de mise a jour : 11/03/2005 Par Aymeric MORILLEAU Comment utiliser le logiciel Memtest86 pour tester sa memoire vive (RAM) ? 1. Introduction 2. Préparation A. Télécharger Memtest B. Préparer Memtest C. Préparer le boot 3. Utilisation 4. Conclusion 5. Liens utiles 1. Introduction Memtest est un utilitaire très pratique, il permet de tester l'état des barrettes de mémoire vive (RAM) installées sur votre système. En effet la RAM est un élément indispensable d'un PC, elle est utilisée en permanence par le système d'exploitation et les programmes en cours d'utilisation. Dans ces conditions il paraît donc difficile de tester l'état de ses barrettes de RAM. Memtest répond à cette problématique : c'est un utilitaire, autonome et bootable. C'est à dire que Memtest va être installé sur une disquette ou un cd sur lequel le PC bootera au démarrage afin de réaliser un test complet de la mémoire vive installée. Il ne faut pas hésiter à utiliser memtest86 en cas d'instabilité de votre système, "freeze", re-boot et autres problèmes pouvant être le résultat d'une RAM défectueuse 2. Préparation A. Télécharger Memtest Pour télécharger Memtest rendez-vous sur le site www.memtest86.com , depuis ce site vous pourrez télécharger différents fichiers (dans la première section proposée en dessous du sommaire et intitulée " RELEASE "). Ces fichiers se présentent sous la forme de quatre liens : 'Download - Linux Memtest86 vX.X Source and binary Package' : vous permettra d'obtenir les sources de Memtest86 en vue d'une recompilation,

HCI MemTestTool penguji RAM dan memory controller yang PALING berat menurut kami saat ini adalah HCI MemTest. Software ini bahkan konon menjadi standar kestabilan berbagai perusahaan memori saat melakukan validasi setting RAMnya sebelum dijual ke konsumen. MemTest akan memberikan beban yang sangat berat kepada RAM dan memory controller, bahkan kadang kami sempat berpikir bahwa pengujian ini hampir tidak masuk akal beratnya. Sedikit kelemahan pada RAM maupun kontroler memori akan mengakibatkan pesan error, antara lain seperti ini:Sebagai perbandingan, kami pernah melakukan pengujian terhadap sebuah sistem PC harian seorang member JagatOC yang selama ini diuji stabil dengan 3DMark11 Physics dan LinX. PC tersebut sudah stabil menjalankan tugas sehari-hari selama 1 tahun tanpa error/crash sekalipun, dan sistem tersebut masih mengalami 2x error pada uji HCI MemTest!Ada versi gratis dari HCI MemTest dan Versis berbayar(komersial). Jika Anda hanya ingin merasakan seberapa beratnya pengujian ini, Anda bisa men-download versi gratis.Untuk menguji sistem dengan MemTest versi free Anda disarankan untuk:Menjalankan software ini sebanyak jumlah thread pada CPU Anda.Membagi setidaknya 90% jumlah usable RAM total, ke jumlah thread CPU Anda yang disebutkan di atas tadiMenjalankan pengujian hingga setidaknya 100-150% coverage.Berikut ini contoh pengoperasian MemTest pada Core i7-6700K (8 thread) dan jumlah RAM 16GB. Kami menjalankan 8 software MemTest yang membebani RAM utama sebesar 1840MB, yang mengakibatkan sistem menjalankan pengujian dengan RAM sebesar 14720MB (sekitar 90% dari 16GB atau 16384MB).*klik untuk memperbesar*Selamat Menguji!Tentunya, banyak metode pengujian kestabilan memori yang tidak bisa kami sebutkan satu-persatu. Semoga 5 jenis tool yang kami sebut di atas cukup membantu Anda yang sedang mencari cara untuk melakukan Stability Test/Stress Test pada bagian RAM maupun memory controller. Happy testing!