Andy's Workshop Forums

General Category => Hardware projects => Topic started by: denj on December 09, 2016, 05:13:31 pm

Title: Z800 Compatible RAM
Post by: denj on December 09, 2016, 05:13:31 pm
Does anyone know what the exact samsung part # is for this HP 584686-001?

I'm trying to purchase 16 GB modules for cheap from EBAY but I'm at a loss as to which ones to pick. 

The official ones is HP 584686-001 but I've noticed
HP 501538-001 =
HP 500666-B21 =
HP 500207-071 = HP 16GB 4RX4 PC3-8500R-7 RDIMM DDR3 1066MHZ MEMORY (located at http://www.serversupply.com/MEMORY/PC3-8500/16GB/HP/501538-001.htm ) lists Z800 workstation as being compatible. 

They share the same technical details as HP 584686-001:  16GB, PC3-8500R, DDR3-1066P, 240-pins, Registered ECC, CL=7 (4R) memory module (Samsung)


Title: Re: Z800 Compatible RAM
Post by: Andy Brown on December 10, 2016, 08:18:40 am
As long as the technical specs of the memory match those in the HP Z800 Memory Configuration and Optimization document then you should be fine. My own 48Gb is a mix of hynix and samsung modules from different sources and it works perfectly. Just make sure your configuration matches one of those in HP's document and be aware of the performance warning about using quad rank memory (the 800MHz limit)
Title: Re: Z800 Compatible RAM
Post by: denj on December 10, 2016, 08:51:35 am
I plan on running multiple VM's on this machine, when i get all the parts, I'll see if it takes a severe performance hit, if it does then I'll switch to 96 GB of RAM
Title: Re: Z800 Compatible RAM
Post by: bulls4ever on January 03, 2017, 12:32:17 pm
get any PC3L-12800R or PC3L-10600R
They are low voltage. The advantage of low voltage is that you can populate all slots and it will not slow down your system to 800Mhz

the quad rank low voltage works like a dual rank for the purposes of memory configuration.

I have 96Gb installed in one CPU and will have soon 192 once I install my 2nd CPU.
Title: Re: Z800 Compatible RAM
Post by: denj on January 03, 2017, 08:32:07 pm
Too late, I already purchased them for 40 USD each...I now have excess...sigh. 
Title: Re: Z800 Compatible RAM
Post by: bulls4ever on January 04, 2017, 10:15:25 am
you can resell ;)
PC3-8500R is too slow
DDR3-1066P 4 ranks is good as long as you only use 3 total. If you add a second into a channel then all memory will run at 8500 speed.

Remember, not only the memory will run slow but the CPU will be affected as well.

PC3L-12800R or PC3L-10600R will not slow down your computer.

Note: Low Voltage usually sells for more, but I bought mine for $30-$40 per 16Gb. I have a total of 176Gb. Need to buy one more.
Title: Re: Z800 Compatible RAM
Post by: denj on January 27, 2017, 12:20:01 pm
Do the low power ones have heatspreaders on them?
Title: Re: Z800 Compatible RAM
Post by: bulls4ever on February 03, 2017, 03:51:25 pm
no, they do not have
Title: Re: Z800 Compatible RAM
Post by: MikkeSti on February 16, 2017, 05:23:46 am
Hello all!

New z800 owner here trying to figure out possible memory combinations and what might be wrong. When I first got the computer it had kinda odd memory combination:
2x Micron 8Gb 2rx4 PC3L-12800R in first slots of both cpus.
2x Samsung 4Gb 1rx4 PC3-10600R in second slots of both cpu.
All modules ECC and registered running dual channel 1333mhz and Computer working just fine. Then i had a chat with the seller and he said that it seems they didn't check the computer properly and we should change memory configuration. He sent me 6x Samsung 4Gb 2rx8 PC3-12800R ECC REG modules. Last night I fixed those in the computer but they didn't work as expected.
Four beeps and fault codes:
3x "209-Memory Warning Condition (WARN_DQS_Test) detected. Slot CPU0 DIMM 5"
"203--Memory module failed self-test and failing rank was disabled"
No matter which order i put those modules in, dimm 5 fails. Next I did a test with 4 new and 2 old samsung modules. Difference being that old modules had only 1 rank each. Now it beeps only 3 times and errorcode 209 pops only 2 times? But still dimm 5 fails.

So what might be the problem? Mb, memory conf, rank count or something else?

P.S. Great forum and projects!

/Miika
Title: Re: Z800 Compatible RAM
Post by: MikkeSti on February 17, 2017, 09:05:12 am
Good evening.

Some more chat with the seller and few new ideas and now everything seems to be working. He said the problem sounded very similar to what he had with a z400. During transportation something could slighty move out of place and he told me to reinstall cpus. I also swapped them to see if the problem is in the memory controller. So after some cleaning and reinstalling all memory modules are now recognized and triple channel working fine.
Title: Re: Z800 Compatible RAM
Post by: Dexler on February 19, 2017, 11:24:04 pm
Quote from: denj on January 03, 2017, 08:32:07 pm
Too late, I already purchased them for 40 USD each...I now have excess...sigh.


What are you going to do with your excess ones Denj?
Title: Re: Z800 Compatible RAM
Post by: MikkeSti on February 20, 2017, 12:35:13 pm
After i got my ram errors away i have done few memory benchmarks to see what could be best BIOS settings for my combined workstation and gaming. I am using MaxxMem2. Read speeds seems to always be almost 13gb/s but copy and write always stays way below 10gb/s. And latency varies from 80ns to 150ns. Maximum total speed always under 10gb/s. I would like to see more benchmark results from other z800s to compare. Friend of mine running z400 with x5687 triple channel 1333mhz got MaxxMem total result of 13gb/s. I know these two system are a bit different but still got me thinking is there something wrong with my z800.

Just an idea: Should we open new thread for combined benchmark results? Cinebench, 3dMark, PassMark, etc?
Title: Re: Z800 Compatible RAM
Post by: Andy Brown on February 20, 2017, 12:50:00 pm
I've attached my results. They are broadly the same as you describe for yours.
Title: Re: Z800 Compatible RAM
Post by: MikkeSti on February 20, 2017, 01:12:12 pm
Thanks Andy. Almost a copy from my most recent results. Do you have MNI or NUMA enabled?
Title: Re: Z800 Compatible RAM
Post by: Andy Brown on February 21, 2017, 12:54:53 pm
Both options were disabled. The inbuilt help says that NUMA should be enabled for Windows and disabled for Linux, so I enabled it since I'm using Windows 10. That seemed to slightly slow down the benchmarks so I'll be disabling it again.
Title: Re: Z800 Compatible RAM
Post by: denj on February 22, 2017, 08:20:14 pm
Quote from: Dexler on February 19, 2017, 11:24:04 pm
Quote from: denj on January 03, 2017, 08:32:07 pm
Too late, I already purchased them for 40 USD each...I now have excess...sigh.


What are you going to do with your excess ones Denj?


Was planning on selling them back on eBay
Title: Re: Z800 Compatible RAM
Post by: msilveira on July 10, 2017, 07:12:36 pm
Anyone kind enough to tell me wether it is possible to use 4x PC3L-8500 4rx4 + 2x PC3-8500 4xr4 (16gb modules) ?
I'm not sure about this setup... I've just found someone selling "cheap" PC3L-8500 4rx4 16gb modules ( only 4 units unfortunately ) ... but I'll still be missing 2 modules ( Dual CPU )...
As soon as I find other 2 cheap PC3L modules, I'll buy them and change the PC3 modules for the PC3L modules ( and probably sell the PC3 modules )...
Or.. If the budget is OK in the future, I might upgrade to 192gb and upgrade the CPUs ( E5620 at the moment )...

Are these setups possible: 4x PC3L + 2x PC3 and 6x PC3L + 6x PC3 ( all 16gb 4rx4 )?
Title: Re: Z800 Compatible RAM
Post by: msilveira on July 21, 2017, 01:40:08 pm
Not sure yet about my last post, but I guess I could mix PC3L for CPU0 and PC3 for CPU1 , right?

FYI: It works with Unbuffered, non-ECC ( Standard desktop ) Memory modules, both single side an dual side, I've just thrown 6x4gb for CPU0 and it works fine!
PS: I had a pair of modules that didn't work, theoretically equal to another pair I have working, but... for whatever reason, the Mobo didn't like them!

FYI2: Memtest86+ doesn't work with Z800, but memtest86 4 from http://www.memtest86.com/download.htm#v4 (http://www.memtest86.com/download.htm#v4) works fine ( v4.3.7 )
Title: Re: Z800 Compatible RAM
Post by: Paul1966 on July 22, 2017, 09:17:57 am
Hi All
1st Post !! :-)
I have 6 X Samsung 4rx4 PC3L-8500R-07-11-AB1-D3  (Planet First)
which POSTs passes memtest86
runs ubuntu
but fails to boot win 10 64bit (pro)(clean install)
does anyone have any ideas
as I'm so stuck.....

Thanks in advance
Paul1966
Title: Re: Z800 Compatible RAM
Post by: Andy Brown on July 24, 2017, 02:08:36 pm
Quote from: Paul1966 on July 22, 2017, 09:17:57 am
Hi All
1st Post !! :-)
I have 6 X Samsung 4rx4 PC3L-8500R-07-11-AB1-D3  (Planet First)
which POSTs passes memtest86
runs ubuntu
but fails to boot win 10 64bit (pro)(clean install)
does anyone have any ideas
as I'm so stuck.....


Hi Paul, does your configuration match one of the supported configurations in the "HP Z800 Memory Configuration and Optimization" PDF? If it does then I'd try as many of the other supported permutations from the table in that guide as possible. I guess from the fact it works in memtest86 that the sticks themselves are in good order and are supported by the underlying hardware and it must be something to do with Windows.
Title: Re: Z800 Compatible RAM
Post by: Paul1966 on July 24, 2017, 02:43:54 pm
Hi Andy,
Thanks for your prompt reply,
I have 2 processors, therefore the sticks have to be in the configuration set out (black slots).
I don't know any other configurations I could try,
The 24gb I had originally, came out of the same black slots, meaning the slots aren't at fault?

I know some operating systems aren't as fussy as Windows, which is why we tried Ubuntu.
I also believe it's something to do with Windows, but nobody else seems to have the same fault that I do. Which is the spinning dots crashing on Windows 10 load.

I also have all the drivers up to date, and BIOS flashed to the latest version (ver3.60)

Thanks in advance,
Paul.
Title: Re: Z800 Compatible RAM
Post by: msilveira on July 24, 2017, 03:04:09 pm
Quote from: Paul1966 on July 24, 2017, 02:43:54 pm
Hi Andy,
Thanks for your prompt reply,
I have 2 processors, therefore the sticks have to be in the configuration set out (black slots).
I don't know any other configurations I could try,
The 24gb I had originally, came out of the same black slots, meaning the slots aren't at fault?

I know some operating systems aren't as fussy as Windows, which is why we tried Ubuntu.
I also believe it's something to do with Windows, but nobody else seems to have the same fault that I do. Which is the spinning dots crashing on Windows 10 load.

I also have all the drivers up to date, and BIOS flashed to the latest version (ver3.60)

Thanks in advance,
Paul.

Have you tried a different, low power GPU? or only 1 CPU? This might be related to PSU stability or GPU.
I know, ubuntu runs fine, I know linux very well... but it's time for some trial / error.
Title: Re: Z800 Compatible RAM
Post by: Paul1966 on July 25, 2017, 03:51:35 am
Thanks for the prompt reply,

Will give this a go, and see whether it fixes the problem.

Thanks for the advice,
Paul
Title: Re: Z800 Compatible RAM
Post by: Paul1966 on July 25, 2017, 02:23:29 pm
Hi msilveira,
LOL
Booted 1st time after pulling a CPU.....
in retrospect I guess low voltage means higher current ??
maybe trying to step from 12gb to 96gb is too much power drain ?

Thanks again
to all who have posted
Paul
Title: Re: Z800 Compatible RAM
Post by: msilveira on July 31, 2017, 04:28:20 pm
Quote from: Paul1966 on July 25, 2017, 02:23:29 pm
Hi msilveira,
LOL
Booted 1st time after pulling a CPU.....
in retrospect I guess low voltage means higher current ??
maybe trying to step from 12gb to 96gb is too much power drain ?

Thanks again
to all who have posted
Paul


You may try another low power GPU, and try adding one pair of memory stick ( 1 per cpu )  a time ...