i want to put the 2nd one in the moatherboard would i find anyproplems ?
and what is the diffrence between them?
and who is faster and recommended?
The First and Third DIMMs ... appear to be a matched set/pair.
If this is what your machine uses, you should be able to install them in a Dual-Channel Memory-Bank ... and they should run in the faster Dual-Channel-Mode.
Generally Single Rank Memory is faster than Dual Rank Memory, in basic terms when a computer accesses Single Rank Memory it only has to clock once, where are Dual Rank it would have to clock twice.The number of ranks on any DIMM is the number of independent sets of DRAMs that can be accessed for the full data bit‐width of the DIMM ie 64 bits.
LOW DENSITY DDR3L • 1600MHz • PC3L-12800 • 240-Pin • Unbuffered • Non ECC • 1.35V • CL11 • Dual Rank • 2Rx8 based • 256x8 JEDEC standard 1.35V (1.28V ~ 1.45V) and 1.5V (1.425V ~ 1.575V) Power Supply • This is a dual voltage piece and can operate at 1.35V or 1.5V
To be honest, the system model that you are using is too old. If you are going to use the system for just everyday work such as checking emails and surfing internet and stuff, you should be fine with those memory modules.
The information given by other guys on top does matter when you are actually looking for literally high level performance boost such as while gaming or if memory rank handled by your processor is limited which should not be the case here.
You should be fine with the given 3 memories as memory controller will check and handle them on the matching frequencies itself. Go ahead and give it a try. If you find issues, remove the one with 1R.
Tesla1856
8 Wizard
•
17.4K Posts
1
July 2nd, 2018 11:00
The First and Third DIMMs ... appear to be a matched set/pair.
If this is what your machine uses, you should be able to install them in a Dual-Channel Memory-Bank ... and they should run in the faster Dual-Channel-Mode.
speedstep
9 Legend
•
47K Posts
0
July 2nd, 2018 01:00
You cannot mix ranks or density. All ram must be LOW Density. Its also not a good idea to mix vendors and speed. One set is 9-10 and the other is 9-11
I would recommend this ram if you are trying to upgrade a 780
https://www.amazon.com/Timetec-1600MHz-PC3L-12800-Unbuffered-Computer/dp/B00IV19IA8/
Generally Single Rank Memory is faster than Dual Rank Memory, in basic terms when a computer accesses Single Rank Memory it only has to clock once, where are Dual Rank it would have to clock twice.The number of ranks on any DIMM is the number of independent sets of DRAMs that can be accessed for the full data bit‐width of the DIMM ie 64 bits.
https://www.dell.com/downloads/global/products/optix/en/optiplex_780_tech_guidebook_en.pdf
According to SK Hynix Product Document Label Info. DDR3:
11 is the SPD Revision - JEDEC SPD Revision Encoding and Additions level (8) so
HMT125U6TFR8C CANNOT BE MIXED WITH HMT325U6CFR8C
Ram must be installed in pairs.
max ram is 8 or 16 gigs depending on 2 or 4 memory slots.
quad Rank and 8 GIG dimms ARE NOT SUPPORTED.
cuze
7 Posts
0
July 2nd, 2018 11:00
Then should i use all 2Rx8?
i also have 2GB 2Rx8 pc3-8500U-7-10-B0 HMT125u6TFR8c-G7 No AA-C
Would it be better if i replaced it with the 1R one?
nt: I tested the 1r and it run fine
@speedstep
speedstep
9 Legend
•
47K Posts
0
July 2nd, 2018 11:00
pc3-8500U-7-10-B0 is TOO SLOW.
Mixing speed is a very bad idea.
Ram needs to be in matched pairs.
https://www.amazon.com/Timetec-1600MHz-PC3L-12800-Unbuffered-Computer/dp/B00IV19IA8/
LOW DENSITY DDR3L • 1600MHz • PC3L-12800 • 240-Pin • Unbuffered • Non ECC • 1.35V • CL11 • Dual Rank • 2Rx8 based • 256x8
JEDEC standard 1.35V (1.28V ~ 1.45V) and 1.5V (1.425V ~ 1.575V) Power Supply • This is a dual voltage piece and can operate at 1.35V or 1.5V
cuze
7 Posts
0
July 2nd, 2018 12:00
I can't get these rams u recommed frist and third came with the pc when i bought it i just want to add 1 more ram
should i use all the same kind like frist and third to get good speed?
@speedstep
UserNumber47
1 Message
0
July 3rd, 2018 00:00
To be honest, the system model that you are using is too old. If you are going to use the system for just everyday work such as checking emails and surfing internet and stuff, you should be fine with those memory modules.
The information given by other guys on top does matter when you are actually looking for literally high level performance boost such as while gaming or if memory rank handled by your processor is limited which should not be the case here.
You should be fine with the given 3 memories as memory controller will check and handle them on the matching frequencies itself. Go ahead and give it a try. If you find issues, remove the one with 1R.