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AnthonyK
Level 4
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memory upgrade, dual rank, quad or dual channel

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HP Z620 Workstation
Microsoft Windows 10 (64-bit)

Please enlighten me.

 

Right now I have the oppertunity to upgrade my system with more memory. Currently I have installed 4 banks of 4 Gig DDR3 1333Mhz registered dual rank ECC memory leaving 4 slots free at the moment.

 

Based on my current budget I can go for

 

4 additional similar banks of 4 GB DDR3 1333Mhz registered dual rank ECC or replace the current banks with 4 new DDR3 1600Mhz registered dual rank ECC memory banks of 8 Gb each. Another option is to go with 2 new DDR 1600Mhz registered dual rank ECC memory bank of 16 Gb each.

 

What would those options would be the smarter solution for audio/video and photo editing, programming of web application running multiple virtual machines for those web application development purposes and general administrative tasks with MS Office and accounting software.

Input much appreciated

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Big_Dave
Level 15
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Hi,

 

Go with exact HP matching dimms.  Based on your description of your applications, the speed of the dimms is not going to make any significant difference.

HP ENVY 6055, HP Deskjet 1112
HP Envy 17", i7-8550u,16GB, 512GB NVMe, 4K screen, Windows 10 x64
Custom PC - Z590, i7-11700K, 32GB, dual 512 GB NVMe, gen4 2 TB m.2 SSD, 4K screen, OC'd to 5 Ghz, NVIDIA 3080 10GB
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AnthonyK
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I read that CAS latency is a better predictor for performance than just clockspeed alone.  But what if you have both a low latency and a higher clock speed ?

 

What about the dual rank versus single rank DDR3 ECC ??

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DGroves
Level 11
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if your cpu/motherboard supports 1600 then you can run it, if not it will run at 1333

 

truth be told unless you are overclocking the cpu and ram ,..1600 will ram will not really give you anything more 

 

1600mhz ram is expensive, i would  get 1333mhz and  fill  all 4 memory banks

 

 

your listed use for the system would benefit from  all memory channels filled with as much ram as you can afford

 

up to 32gb, adding more will not really increase the reponsiveness of the system

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Big_Dave
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Hi,

 

For optimal performance, be sure that your memory is running quad channel functionality.  You can use CPU-Z to determine memory channel operation.

 

The performance difference between 1333 and 1600 is at best 10%. While you may just need more memory, I would suggest just using matching HP dimms and fill up the memory banks.

 

 

HP ENVY 6055, HP Deskjet 1112
HP Envy 17", i7-8550u,16GB, 512GB NVMe, 4K screen, Windows 10 x64
Custom PC - Z590, i7-11700K, 32GB, dual 512 GB NVMe, gen4 2 TB m.2 SSD, 4K screen, OC'd to 5 Ghz, NVIDIA 3080 10GB
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