Questions tagged [ddr]
Double Data Rate (DDR) RAM is a type of DRAM (dynamic random-access memory) used in computers.
101
questions
-2
votes
1
answer
25
views
Determine max installable RAM for a CPU that supports but no official motherboard support
I have a Lenovo Ideapad-520IKB laptop with a single 16GB memory SODIMM module and no soldered memory on motherboard. I want to upgrade it to 32GB (or 24GB if 32 not possible)
When I searched Lenovo ...
- 97
0
votes
0
answers
37
views
What does (4G x 4) x 40 DRAM Composition mean?
I found two different specifications of memory modules on Samsung's official website, with the same Component Composition but different capacities. What do the three numbers in Component Composition ...
- 103
0
votes
2
answers
95
views
Can I upgrade 256x8 sodimm ram with 2Rx8 one? [closed]
My old laptop has only one slot for ram. Current ram is SODIMM DDR3 4GB 1333 256x8 CL9 (see attached picture). I want to upgrade ram to 8GB but did not find DDR3 8GB 1333 256x8 CL9. There are a lot of ...
- 101
1
vote
1
answer
711
views
RAM timing/frequency issues, impossible to enable XMP profile
The problem
My RAM is supposed to run in XMP 2.0 at 1600MHz with the following timings
CAS Latency: 16
RAS to CAS: 18
RAS precharge: 18
tRAS: 38
TRC: 56
As you can see there that's the expected ...
- 41
1
vote
2
answers
6k
views
DDR4 SODIMM what does the V lettering mean after the speed? E.g PC4-2666V
I'm normally familar with the lettering of RAM sticks but I'm a little stuck on what V means. For exampe I know 2400T is the T suffix at the end means it meets a specific JEDEC standard. A 2400T ...
- 294
1
vote
1
answer
59
views
DDRx incompatibility [duplicate]
My question is - why I can't use ddr2 and ddr3 memory at the same time? What exactly makes them "incompatible"? Thank you.
- 121
3
votes
0
answers
523
views
How to tell if a laptop is utilizing LPDDR5 Link-ECC functionality?
JEDEC introduces two kinds of ECC to LPDDR5, that's inline ECC and link ECC. [1] However, link ECC, which is used to protect data through transmitting, is optional.[2]. My question is, how could we ...
- 270
0
votes
0
answers
155
views
how to read value of parameter for any ddr4 module?
Kindly someone educate me how to interpret any data data sheet for memory.
I am refering to any data sheet for a ddr4 chip for example - https://www.3d-plus.com/data/doc/products/references/...
0
votes
0
answers
663
views
What does the "S" suffix for RAM modules mean?
While looking for a RAM upgrade, I found two offers which apparently only differ in the "S" suffix of the type, and in the price:
"32 GB RAM, 1 Modul, DDR4, 3200 MHz (PC4-25600), SO-...
- 500
0
votes
0
answers
344
views
Why is DDR5 ram addresses 31-bit (and not using a potential last 32-nd bit? )
I watched this video on YouTube, and it mentions DDR5 is addressed using 31 bits. 5 bits for the bank, 16 bits for the row, and 10 bits for the column. I feel like a 32-bit address would "fit&...
- 101
-1
votes
2
answers
2k
views
Ram tests do not match with Advertised Ram speed
I have 32 GB of Ram on a Windows 11 Machine.4 *8 GB
Per My motherboard Manual :
Supported Ram:4 x DIMM, Max. 128GB, DDR4 4400(O.C.)/4000(O.C.)/3866(O.C.)/3600
(O.C.)/3466(O.C.)/3200/3000/2800/2666/...
- 433
0
votes
0
answers
39
views
After I upgraded to DDR4-3200 32 GB on a MAG X570 MSI, I'm getting a double beep... but everything works fine
This is a strange situation for me.
I'm building a machine for my wife, and since it uses a compatible motherboard (identical except MPG instead of MAG), I'm also passing my old DDR4-2400 to her and ...
- 135
0
votes
2
answers
459
views
Why does my HP EliteBook 8440p doesn't turn on with 2 new DDR3 4gb RAMs?
My HP EliteBook 8440p had 2 DDR3 RAM of 2GB each, so 4 GB total.
This is my DxDiag info:
The specs of these 2 RAM are:
I wanted to change them to 2 4gb RAMs (so 8GB, the max supported ram for this ...
0
votes
1
answer
64
views
3600MHz memory doesn't work to the spec
I'm trying to configure AMD R9 Radeon branded memory kit (model R9S432G3606U2K) to work at it's specified frequency, which is 3600. The motherboard is Asus Prime B550-Plus and, according to it's specs,...
- 183
0
votes
1
answer
396
views
RAM - same RAM manufacturer, but different manufacturing date and possibly chip manufacturer - could it possibly cause problems?
This question is similar to this one Using two different brands of RAM sticks together BUT I have the same model number, RAM company is the same as well, XMP timings and XMP frequency is obviously the ...
- 395
1
vote
0
answers
334
views
Why my ASUS BIOS detects and runs Kingston DDR4 3200MHz memory as 2400MHz?
In my new computer there are 2x8Gb Kingston Fury DDR 4 (Kingston kf432c16bb1k2/16) modules.
Still ASUS Prime Z590-A with Intel i5 11600-K detects it as 2400MHz. Modules installed according ASUS ...
- 498
0
votes
1
answer
567
views
What is the amount of bytes read/written from a DDR1-333Mhz ram per second?
Here's what I calculated. DIMM memories have 64 bit data paths. Which means it can handle 64 bits of data per clock cycle. But since DDR1 rams are able to handle twice the data, it should be able to ...
- 129
0
votes
1
answer
110
views
any validation of disparate memory speed and timings?
By going to the theory (and assuming bit time, command rate and cycle time are all part of the spec and must be true and always the same for all components claiming to be ddr4-xxx --which i would like ...
- 5,041
0
votes
1
answer
2k
views
Gigabyte Z590 Aorus Ultra BIOS does not boot with 4 x 32 GB DDR4?
I got a new PC configuration as described below (in the screenshots) with 4 x 32GB sticks. The system works fine with following memory configurations:
Configuration #1
A1 - 32GB
A2 - NONE
B1 - NONE
...
- 143
24
votes
6
answers
9k
views
Is it safe to use RAM with a damaged capacitor?
While inserting a new DDR4 RAM module in the second slot of my laptop, I broke one of the capacitors (see image).
To my surprise, my Windows 10 started normally indicating that new RAM is available (...
- 339
2
votes
1
answer
2k
views
If you run fast RAM at a slower clock speed, will the latency timings improve?
I am buying a motherboard and CPU that support DDR4 2400 memory.
For approximately the same cost, I can buy either of the following two types of memory:
DDR4 2400 memory with timings of 16-16-16-39.
...
- 335
1
vote
1
answer
3k
views
Does motherboard or processor or both decide the ram generation/type and frequency?
As far as I know, the type and frequency of the memory supported by a computer depend on both the motherboard and the CPU plugged into the motherboard.
But I have seen this page of Intel HM370 chipset ...
- 350
2
votes
1
answer
4k
views
Can I add to my laptop a DDR3L RAM of 1.35v if I already have a DDR3 RAM of 1.5v configured to run at 1.35v? [duplicate]
I have an MSI GP60 2QF Leopard Pro laptop that has a 4th generation Intel core processor (i5-4210H) and an 8GB Kingston DDR3 SDRAM PC3L-12800S 1600MHz RAM Memory (couldn't find a better nor original ...
- 157
0
votes
0
answers
783
views
DDR4 SODIMM Compatability (Are there different SODIMM variations?)
I am looking to get an 8GB DDR4 SODIMM module to upgrade my laptop's RAM. I looked it up on Crucial and the recommended module was this: https://www.crucial.com/memory/ddr4/ct8g4sfs8266/ct13500791
As ...
1
vote
4
answers
8k
views
Can I use a Dual Rank Memory with my Single Rank Memory?
I have a laptop with SAMSUNG 8GB DDR4 2400MHz single Ranked RAM and I buy another SAMSUNG 16GB DDR4 2400MHz dual ranked RAM
I want to know if they will work fine or I will have any compatibility ...
- 129
21
votes
4
answers
35k
views
Does it matter CL9 or CL11 when selecting DDR3?
I have an Asus motherboard, H97-E, with G.SKILL's 2X4GB DDR3-1600 CL-9.
I wish to expand to 16GB, but find this excat type, is quite scarce nowadays. BUT a DDR3-1600, CL-11 can be found in stores ...
- 340
0
votes
1
answer
956
views
Why 2 1600MHz Makes 1333MHz & How to fix it?
I have 4GB DDR3 1600MHz Ram in my laptop(Dell Vostro). I bought another 4GB DDR3 1600MHz Ram and put it to my laptop.
Now my laptop shows 8GB Ram as expected. But it show 1333MHz. Why is that? How to ...
- 1
1
vote
2
answers
375
views
Is this RAM overclocking?
I have 2 DDR4 sticks (2x16 GB) running with a 3700X Ryzen CPU with an MSI B450M Mortar Max motherboard:
one 2x16 GB Crucial rated at XMP 3200 MHz CL16 18-18-36-72 at 1,35V
one 2x16 GB rated at XMP ...
- 255
0
votes
2
answers
3k
views
Intel CPU memory type meaning
I'm reading Intel CPU's spec, the memory type it lists a single frequency, like for i7-8809G, it says Memory Types: DDR4-2400, the confusing is does this mean only 2400 memory modules are supported, ...
- 387
0
votes
0
answers
206
views
How to find compatible RAM for second laptop DIMM slot
I bought a laptop that has 2 DIMM slots, it shipped with a 16 GB stick in one of these slots, but I want to upgrade it and get another 16 GB stick without sacrificing my existing one.
I did a little ...
- 1,913